From a2f4870697a5bcf4a87073ec6b32dd2928c1211d Mon Sep 17 00:00:00 2001 From: Theodore Ts'o Date: Tue, 17 Mar 2015 12:23:19 -0400 Subject: fs: make sure the timestamps for lazytime inodes eventually get written Jan Kara pointed out that if there is an inode which is constantly getting dirtied with I_DIRTY_PAGES, an inode with an updated timestamp will never be written since inode->dirtied_when is constantly getting updated. We fix this by adding an extra field to the inode, dirtied_time_when, so inodes with a stale dirtytime can get detected and handled. In addition, if we have a dirtytime inode caused by an atime update, and there is no write activity on the file system, we need to have a secondary system to make sure these inodes get written out. We do this by setting up a second delayed work structure which wakes up the CPU much more rarely compared to writeback_expire_centisecs. Signed-off-by: Theodore Ts'o Reviewed-by: Jan Kara --- include/linux/fs.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux/fs.h') diff --git a/include/linux/fs.h b/include/linux/fs.h index b4d71b5e1ff2..f4131e8ead74 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -604,6 +604,7 @@ struct inode { struct mutex i_mutex; unsigned long dirtied_when; /* jiffies of first dirtying */ + unsigned long dirtied_time_when; struct hlist_node i_hash; struct list_head i_wb_list; /* backing dev IO list */ -- cgit v1.3-14-g43fede From e2e40f2c1ed433c5e224525c8c862fd32e5d3df2 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Sun, 22 Feb 2015 08:58:50 -0800 Subject: fs: move struct kiocb to fs.h struct kiocb now is a generic I/O container, so move it to fs.h. Also do a #include diet for aio.h while we're at it. Signed-off-by: Christoph Hellwig Signed-off-by: Al Viro --- arch/s390/hypfs/inode.c | 2 +- drivers/char/mem.c | 2 +- drivers/char/tile-srom.c | 1 - drivers/infiniband/hw/ipath/ipath_file_ops.c | 1 - drivers/infiniband/hw/qib/qib_file_ops.c | 1 - drivers/misc/mei/amthif.c | 1 - drivers/misc/mei/main.c | 1 - drivers/misc/mei/pci-me.c | 1 - drivers/scsi/sg.c | 2 +- drivers/staging/unisys/include/timskmod.h | 1 - drivers/usb/gadget/function/f_fs.c | 1 + drivers/usb/gadget/legacy/inode.c | 1 + fs/9p/vfs_addr.c | 2 +- fs/affs/file.c | 2 +- fs/afs/write.c | 1 - fs/bfs/inode.c | 1 + fs/block_dev.c | 1 - fs/btrfs/file.c | 2 +- fs/btrfs/inode.c | 2 +- fs/ceph/file.c | 1 - fs/direct-io.c | 1 - fs/ecryptfs/file.c | 1 - fs/ext2/inode.c | 2 +- fs/ext3/inode.c | 2 +- fs/ext4/file.c | 2 +- fs/ext4/indirect.c | 2 +- fs/ext4/inode.c | 1 - fs/ext4/page-io.c | 1 - fs/f2fs/data.c | 2 +- fs/fat/inode.c | 1 - fs/fuse/cuse.c | 2 +- fs/fuse/dev.c | 1 - fs/fuse/file.c | 2 +- fs/gfs2/aops.c | 2 +- fs/gfs2/file.c | 1 - fs/hfs/inode.c | 2 +- fs/hfsplus/inode.c | 2 +- fs/jfs/inode.c | 2 +- fs/nfs/file.c | 1 - fs/nilfs2/inode.c | 2 +- fs/ntfs/file.c | 1 - fs/ntfs/inode.c | 1 - fs/ocfs2/aops.c | 1 + fs/ocfs2/aops.h | 2 +- fs/pipe.c | 1 - fs/read_write.c | 1 - fs/reiserfs/inode.c | 2 +- fs/splice.c | 1 - fs/ubifs/file.c | 1 - fs/udf/file.c | 2 +- fs/udf/inode.c | 2 +- fs/xfs/xfs_aops.c | 1 - fs/xfs/xfs_file.c | 1 - include/linux/aio.h | 31 +--------------------------- include/linux/fs.h | 22 ++++++++++++++++++++ include/net/sock.h | 1 - kernel/printk/printk.c | 2 +- kernel/sysctl.c | 1 + mm/filemap.c | 1 - mm/page_io.c | 2 +- mm/shmem.c | 2 +- net/ipv4/raw.c | 1 - sound/core/pcm_native.c | 2 +- 63 files changed, 55 insertions(+), 86 deletions(-) (limited to 'include/linux/fs.h') diff --git a/arch/s390/hypfs/inode.c b/arch/s390/hypfs/inode.c index 4c8008dd938e..ad66b07f742e 100644 --- a/arch/s390/hypfs/inode.c +++ b/arch/s390/hypfs/inode.c @@ -21,7 +21,7 @@ #include #include #include -#include +#include #include #include "hypfs.h" diff --git a/drivers/char/mem.c b/drivers/char/mem.c index 297110c12635..9c4fd7a8e2e5 100644 --- a/drivers/char/mem.c +++ b/drivers/char/mem.c @@ -26,7 +26,7 @@ #include #include #include -#include +#include #include diff --git a/drivers/char/tile-srom.c b/drivers/char/tile-srom.c index 02e76ac6d282..69f6b4acc377 100644 --- a/drivers/char/tile-srom.c +++ b/drivers/char/tile-srom.c @@ -27,7 +27,6 @@ #include /* size_t */ #include #include /* O_ACCMODE */ -#include #include #include #include diff --git a/drivers/infiniband/hw/ipath/ipath_file_ops.c b/drivers/infiniband/hw/ipath/ipath_file_ops.c index 6d7f453b4d05..aed8afee56da 100644 --- a/drivers/infiniband/hw/ipath/ipath_file_ops.c +++ b/drivers/infiniband/hw/ipath/ipath_file_ops.c @@ -40,7 +40,6 @@ #include #include #include -#include #include #include #include diff --git a/drivers/infiniband/hw/qib/qib_file_ops.c b/drivers/infiniband/hw/qib/qib_file_ops.c index b15e34eeef68..826c17ee4c7d 100644 --- a/drivers/infiniband/hw/qib/qib_file_ops.c +++ b/drivers/infiniband/hw/qib/qib_file_ops.c @@ -39,7 +39,6 @@ #include #include #include -#include #include #include #include diff --git a/drivers/misc/mei/amthif.c b/drivers/misc/mei/amthif.c index c4cb9a984a5f..40ea639fa413 100644 --- a/drivers/misc/mei/amthif.c +++ b/drivers/misc/mei/amthif.c @@ -19,7 +19,6 @@ #include #include #include -#include #include #include #include diff --git a/drivers/misc/mei/main.c b/drivers/misc/mei/main.c index 3c019c0e60eb..47680c84801c 100644 --- a/drivers/misc/mei/main.c +++ b/drivers/misc/mei/main.c @@ -22,7 +22,6 @@ #include #include #include -#include #include #include #include diff --git a/drivers/misc/mei/pci-me.c b/drivers/misc/mei/pci-me.c index bd3039ab8f98..af44ee26075d 100644 --- a/drivers/misc/mei/pci-me.c +++ b/drivers/misc/mei/pci-me.c @@ -21,7 +21,6 @@ #include #include #include -#include #include #include #include diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c index 0cbc1fb45f10..c78a6f7bbc20 100644 --- a/drivers/scsi/sg.c +++ b/drivers/scsi/sg.c @@ -33,7 +33,6 @@ static int sg_version_num = 30536; /* 2 digits for each component */ #include #include #include -#include #include #include #include @@ -51,6 +50,7 @@ static int sg_version_num = 30536; /* 2 digits for each component */ #include #include #include +#include #include "scsi.h" #include diff --git a/drivers/staging/unisys/include/timskmod.h b/drivers/staging/unisys/include/timskmod.h index 4019a0d63645..52648d4d9922 100644 --- a/drivers/staging/unisys/include/timskmod.h +++ b/drivers/staging/unisys/include/timskmod.h @@ -46,7 +46,6 @@ #include #include #include -#include #include #include #include diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c index b64538b498dc..a12315a78248 100644 --- a/drivers/usb/gadget/function/f_fs.c +++ b/drivers/usb/gadget/function/f_fs.c @@ -23,6 +23,7 @@ #include #include #include +#include #include #include diff --git a/drivers/usb/gadget/legacy/inode.c b/drivers/usb/gadget/legacy/inode.c index a4a80694f607..662ef2c1c62b 100644 --- a/drivers/usb/gadget/legacy/inode.c +++ b/drivers/usb/gadget/legacy/inode.c @@ -26,6 +26,7 @@ #include #include #include +#include #include #include diff --git a/fs/9p/vfs_addr.c b/fs/9p/vfs_addr.c index eb14e055ea83..ff1a5bac4200 100644 --- a/fs/9p/vfs_addr.c +++ b/fs/9p/vfs_addr.c @@ -33,7 +33,7 @@ #include #include #include -#include +#include #include #include diff --git a/fs/affs/file.c b/fs/affs/file.c index d2468bf95669..33eaa67bb026 100644 --- a/fs/affs/file.c +++ b/fs/affs/file.c @@ -12,7 +12,7 @@ * affs regular file handling primitives */ -#include +#include #include "affs.h" static struct buffer_head *affs_get_extblock_slow(struct inode *inode, u32 ext); diff --git a/fs/afs/write.c b/fs/afs/write.c index c13cb08964ed..0714abcd7f32 100644 --- a/fs/afs/write.c +++ b/fs/afs/write.c @@ -14,7 +14,6 @@ #include #include #include -#include #include "internal.h" static int afs_write_back_from_locked_page(struct afs_writeback *wb, diff --git a/fs/bfs/inode.c b/fs/bfs/inode.c index 90bc079d9982..fdcb4d69f430 100644 --- a/fs/bfs/inode.c +++ b/fs/bfs/inode.c @@ -15,6 +15,7 @@ #include #include #include +#include #include #include "bfs.h" diff --git a/fs/block_dev.c b/fs/block_dev.c index 975266be67d3..2e522aed6584 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -27,7 +27,6 @@ #include #include #include -#include #include #include "internal.h" diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index b78bbbac900d..69c9508d2c7e 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -24,7 +24,6 @@ #include #include #include -#include #include #include #include @@ -32,6 +31,7 @@ #include #include #include +#include #include "ctree.h" #include "disk-io.h" #include "transaction.h" diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 54bcf639d1cf..b214ab178f3a 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -32,7 +32,6 @@ #include #include #include -#include #include #include #include @@ -43,6 +42,7 @@ #include #include #include +#include #include "ctree.h" #include "disk-io.h" #include "transaction.h" diff --git a/fs/ceph/file.c b/fs/ceph/file.c index 081c4e3f9e49..98e257c1b5b1 100644 --- a/fs/ceph/file.c +++ b/fs/ceph/file.c @@ -7,7 +7,6 @@ #include #include #include -#include #include #include "super.h" diff --git a/fs/direct-io.c b/fs/direct-io.c index c38b460776e6..6fb00e3f1059 100644 --- a/fs/direct-io.c +++ b/fs/direct-io.c @@ -37,7 +37,6 @@ #include #include #include -#include /* * How many user pages to map in one call to get_user_pages(). This determines diff --git a/fs/ecryptfs/file.c b/fs/ecryptfs/file.c index a36da8841e0c..273d36e3f0c0 100644 --- a/fs/ecryptfs/file.c +++ b/fs/ecryptfs/file.c @@ -31,7 +31,6 @@ #include #include #include -#include #include "ecryptfs_kernel.h" /** diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c index 6434bc000125..df9d6afbc5d5 100644 --- a/fs/ext2/inode.c +++ b/fs/ext2/inode.c @@ -31,7 +31,7 @@ #include #include #include -#include +#include #include "ext2.h" #include "acl.h" #include "xattr.h" diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c index 2c6ccc49ba27..db07ffbe7c85 100644 --- a/fs/ext3/inode.c +++ b/fs/ext3/inode.c @@ -27,7 +27,7 @@ #include #include #include -#include +#include #include "ext3.h" #include "xattr.h" #include "acl.h" diff --git a/fs/ext4/file.c b/fs/ext4/file.c index 33a09da16c9c..598abbbe6786 100644 --- a/fs/ext4/file.c +++ b/fs/ext4/file.c @@ -23,9 +23,9 @@ #include #include #include -#include #include #include +#include #include "ext4.h" #include "ext4_jbd2.h" #include "xattr.h" diff --git a/fs/ext4/indirect.c b/fs/ext4/indirect.c index 6b9878a24182..8611640856d3 100644 --- a/fs/ext4/indirect.c +++ b/fs/ext4/indirect.c @@ -20,9 +20,9 @@ * (sct@redhat.com), 1993, 1998 */ -#include #include "ext4_jbd2.h" #include "truncate.h" +#include #include diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 85404f15e53a..6325d2c1a65c 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -37,7 +37,6 @@ #include #include #include -#include #include #include "ext4_jbd2.h" diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c index b24a2541a9ba..464984261e69 100644 --- a/fs/ext4/page-io.c +++ b/fs/ext4/page-io.c @@ -18,7 +18,6 @@ #include #include #include -#include #include #include #include diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 985ed023a750..497f8515d205 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -12,12 +12,12 @@ #include #include #include -#include #include #include #include #include #include +#include #include "f2fs.h" #include "node.h" diff --git a/fs/fat/inode.c b/fs/fat/inode.c index 497c7c5263c7..8521207de229 100644 --- a/fs/fat/inode.c +++ b/fs/fat/inode.c @@ -19,7 +19,6 @@ #include #include #include -#include #include #include #include diff --git a/fs/fuse/cuse.c b/fs/fuse/cuse.c index 28d0c7abba1c..b3fa05032234 100644 --- a/fs/fuse/cuse.c +++ b/fs/fuse/cuse.c @@ -38,7 +38,6 @@ #include #include #include -#include #include #include #include @@ -48,6 +47,7 @@ #include #include #include +#include #include "fuse_i.h" diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c index ed19a7d622fa..8c92c727ddd6 100644 --- a/fs/fuse/dev.c +++ b/fs/fuse/dev.c @@ -19,7 +19,6 @@ #include #include #include -#include MODULE_ALIAS_MISCDEV(FUSE_MINOR); MODULE_ALIAS("devname:fuse"); diff --git a/fs/fuse/file.c b/fs/fuse/file.c index a5c5e38b3ff8..ff102cbf16ea 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -15,8 +15,8 @@ #include #include #include -#include #include +#include static const struct file_operations fuse_direct_io_file_operations; diff --git a/fs/gfs2/aops.c b/fs/gfs2/aops.c index 4ad4f94edebe..fe6634d25d1d 100644 --- a/fs/gfs2/aops.c +++ b/fs/gfs2/aops.c @@ -20,7 +20,7 @@ #include #include #include -#include +#include #include #include "gfs2.h" diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c index 3e32bb8e2d7e..f6fc412b1100 100644 --- a/fs/gfs2/file.c +++ b/fs/gfs2/file.c @@ -25,7 +25,6 @@ #include #include #include -#include #include #include "gfs2.h" diff --git a/fs/hfs/inode.c b/fs/hfs/inode.c index d0929bc81782..98d4ea45bb70 100644 --- a/fs/hfs/inode.c +++ b/fs/hfs/inode.c @@ -14,7 +14,7 @@ #include #include #include -#include +#include #include "hfs_fs.h" #include "btree.h" diff --git a/fs/hfsplus/inode.c b/fs/hfsplus/inode.c index 0cf786f2d046..f541196d4ee9 100644 --- a/fs/hfsplus/inode.c +++ b/fs/hfsplus/inode.c @@ -14,7 +14,7 @@ #include #include #include -#include +#include #include "hfsplus_fs.h" #include "hfsplus_raw.h" diff --git a/fs/jfs/inode.c b/fs/jfs/inode.c index bd3df1ca3c9b..3197aed10614 100644 --- a/fs/jfs/inode.c +++ b/fs/jfs/inode.c @@ -22,8 +22,8 @@ #include #include #include +#include #include -#include #include "jfs_incore.h" #include "jfs_inode.h" #include "jfs_filsys.h" diff --git a/fs/nfs/file.c b/fs/nfs/file.c index 94712fc781fa..5d8b89cb13c0 100644 --- a/fs/nfs/file.c +++ b/fs/nfs/file.c @@ -26,7 +26,6 @@ #include #include #include -#include #include #include diff --git a/fs/nilfs2/inode.c b/fs/nilfs2/inode.c index 8b5969538f39..ab4987bc637f 100644 --- a/fs/nilfs2/inode.c +++ b/fs/nilfs2/inode.c @@ -26,7 +26,7 @@ #include #include #include -#include +#include #include "nilfs.h" #include "btnode.h" #include "segment.h" diff --git a/fs/ntfs/file.c b/fs/ntfs/file.c index 1da9b2d184dc..f16f2d8401fe 100644 --- a/fs/ntfs/file.c +++ b/fs/ntfs/file.c @@ -28,7 +28,6 @@ #include #include #include -#include #include #include diff --git a/fs/ntfs/inode.c b/fs/ntfs/inode.c index 898b9949d363..1d0c21df0d80 100644 --- a/fs/ntfs/inode.c +++ b/fs/ntfs/inode.c @@ -28,7 +28,6 @@ #include #include #include -#include #include "aops.h" #include "attrib.h" diff --git a/fs/ocfs2/aops.c b/fs/ocfs2/aops.c index 44db1808cdb5..e1bf18c5d25e 100644 --- a/fs/ocfs2/aops.c +++ b/fs/ocfs2/aops.c @@ -29,6 +29,7 @@ #include #include #include +#include #include diff --git a/fs/ocfs2/aops.h b/fs/ocfs2/aops.h index 6cae155d54df..dd59599b022d 100644 --- a/fs/ocfs2/aops.h +++ b/fs/ocfs2/aops.h @@ -22,7 +22,7 @@ #ifndef OCFS2_AOPS_H #define OCFS2_AOPS_H -#include +#include handle_t *ocfs2_start_walk_page_trans(struct inode *inode, struct page *page, diff --git a/fs/pipe.c b/fs/pipe.c index 21981e58e2a6..2d084f2d0b83 100644 --- a/fs/pipe.c +++ b/fs/pipe.c @@ -21,7 +21,6 @@ #include #include #include -#include #include #include diff --git a/fs/read_write.c b/fs/read_write.c index 76e324e8ce8d..99a6ef946d01 100644 --- a/fs/read_write.c +++ b/fs/read_write.c @@ -9,7 +9,6 @@ #include #include #include -#include #include #include #include diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c index e72401e1f995..9312b7842e03 100644 --- a/fs/reiserfs/inode.c +++ b/fs/reiserfs/inode.c @@ -18,7 +18,7 @@ #include #include #include -#include +#include int reiserfs_commit_write(struct file *f, struct page *page, unsigned from, unsigned to); diff --git a/fs/splice.c b/fs/splice.c index 7968da96bebb..4bbfa95b5bfe 100644 --- a/fs/splice.c +++ b/fs/splice.c @@ -32,7 +32,6 @@ #include #include #include -#include #include "internal.h" /* diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c index e627c0acf626..c3d15fe83403 100644 --- a/fs/ubifs/file.c +++ b/fs/ubifs/file.c @@ -50,7 +50,6 @@ */ #include "ubifs.h" -#include #include #include #include diff --git a/fs/udf/file.c b/fs/udf/file.c index 9c0b6da9dbb3..7f885cc8b0b7 100644 --- a/fs/udf/file.c +++ b/fs/udf/file.c @@ -34,7 +34,7 @@ #include #include #include -#include +#include #include "udf_i.h" #include "udf_sb.h" diff --git a/fs/udf/inode.c b/fs/udf/inode.c index a445d599098d..9c1fbd23913d 100644 --- a/fs/udf/inode.c +++ b/fs/udf/inode.c @@ -38,7 +38,7 @@ #include #include #include -#include +#include #include "udf_i.h" #include "udf_sb.h" diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c index 3a9b7a1b8704..4f8cdc59bc38 100644 --- a/fs/xfs/xfs_aops.c +++ b/fs/xfs/xfs_aops.c @@ -31,7 +31,6 @@ #include "xfs_bmap.h" #include "xfs_bmap_util.h" #include "xfs_bmap_btree.h" -#include #include #include #include diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c index 1cdba95c78cb..f527618cb42b 100644 --- a/fs/xfs/xfs_file.c +++ b/fs/xfs/xfs_file.c @@ -37,7 +37,6 @@ #include "xfs_log.h" #include "xfs_icache.h" -#include #include #include #include diff --git a/include/linux/aio.h b/include/linux/aio.h index 5c40b61285ac..9eb42dbc5582 100644 --- a/include/linux/aio.h +++ b/include/linux/aio.h @@ -1,52 +1,23 @@ #ifndef __LINUX__AIO_H #define __LINUX__AIO_H -#include -#include #include -#include -#include - -#include struct kioctx; struct kiocb; +struct mm_struct; #define KIOCB_KEY 0 typedef int (kiocb_cancel_fn)(struct kiocb *); -#define IOCB_EVENTFD (1 << 0) - -struct kiocb { - struct file *ki_filp; - loff_t ki_pos; - void (*ki_complete)(struct kiocb *iocb, long ret, long ret2); - void *private; - int ki_flags; -}; - -static inline bool is_sync_kiocb(struct kiocb *kiocb) -{ - return kiocb->ki_complete == NULL; -} - -static inline void init_sync_kiocb(struct kiocb *kiocb, struct file *filp) -{ - *kiocb = (struct kiocb) { - .ki_filp = filp, - }; -} - /* prototypes */ #ifdef CONFIG_AIO -struct mm_struct; extern void exit_aio(struct mm_struct *mm); extern long do_io_submit(aio_context_t ctx_id, long nr, struct iocb __user *__user *iocbpp, bool compat); void kiocb_set_cancel_fn(struct kiocb *req, kiocb_cancel_fn *cancel); #else -struct mm_struct; static inline void exit_aio(struct mm_struct *mm) { } static inline long do_io_submit(aio_context_t ctx_id, long nr, struct iocb __user * __user *iocbpp, diff --git a/include/linux/fs.h b/include/linux/fs.h index 447932aed1e1..48c1472bde4a 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -314,6 +314,28 @@ struct page; struct address_space; struct writeback_control; +#define IOCB_EVENTFD (1 << 0) + +struct kiocb { + struct file *ki_filp; + loff_t ki_pos; + void (*ki_complete)(struct kiocb *iocb, long ret, long ret2); + void *private; + int ki_flags; +}; + +static inline bool is_sync_kiocb(struct kiocb *kiocb) +{ + return kiocb->ki_complete == NULL; +} + +static inline void init_sync_kiocb(struct kiocb *kiocb, struct file *filp) +{ + *kiocb = (struct kiocb) { + .ki_filp = filp, + }; +} + /* * "descriptor" for what we're up to with a read. * This allows us to use the same read code yet diff --git a/include/net/sock.h b/include/net/sock.h index ab186b1d31ff..71c1300025e2 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -57,7 +57,6 @@ #include #include #include -#include #include #include diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c index 60b2aa2a2da9..40d50cc4c686 100644 --- a/kernel/printk/printk.c +++ b/kernel/printk/printk.c @@ -32,7 +32,6 @@ #include #include #include -#include #include #include #include @@ -46,6 +45,7 @@ #include #include #include +#include #include diff --git a/kernel/sysctl.c b/kernel/sysctl.c index 88ea2d6e0031..83d907afb4a6 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -19,6 +19,7 @@ */ #include +#include #include #include #include diff --git a/mm/filemap.c b/mm/filemap.c index ad7242043bdb..876f4e6f3ed6 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -13,7 +13,6 @@ #include #include #include -#include #include #include #include diff --git a/mm/page_io.c b/mm/page_io.c index 7ef21577856c..a96c8562d835 100644 --- a/mm/page_io.c +++ b/mm/page_io.c @@ -20,8 +20,8 @@ #include #include #include -#include #include +#include #include static struct bio *get_swap_bio(gfp_t gfp_flags, diff --git a/mm/shmem.c b/mm/shmem.c index a63031fa3e0c..944b94079bb0 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -31,7 +31,7 @@ #include #include #include -#include +#include static struct vfsmount *shm_mnt; diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c index f027a708b7e0..4a356b7c081b 100644 --- a/net/ipv4/raw.c +++ b/net/ipv4/raw.c @@ -46,7 +46,6 @@ #include #include #include -#include #include #include #include diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c index b03a638b420c..9ecff240a39b 100644 --- a/sound/core/pcm_native.c +++ b/sound/core/pcm_native.c @@ -25,7 +25,6 @@ #include #include #include -#include #include #include #include @@ -35,6 +34,7 @@ #include #include #include +#include /* * Compatibility -- cgit v1.3-14-g43fede From cae80b305e1c3944746dd93e33e9b2ccd5a490c1 Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Fri, 3 Apr 2015 09:04:04 -0400 Subject: locks: change lm_get_owner and lm_put_owner prototypes The current prototypes for these operations are somewhat awkward as they deal with fl_owners but take struct file_lock arguments. In the future, we'll want to be able to take references without necessarily dealing with a struct file_lock. Change them to take fl_owner_t arguments instead and have the callers deal with assigning the values to the file_lock structs. Signed-off-by: Jeff Layton --- fs/locks.c | 8 +++++--- fs/nfsd/nfs4state.c | 18 ++++++++++-------- include/linux/fs.h | 4 ++-- 3 files changed, 17 insertions(+), 13 deletions(-) (limited to 'include/linux/fs.h') diff --git a/fs/locks.c b/fs/locks.c index 54a79883a7f9..3ebaafb4c587 100644 --- a/fs/locks.c +++ b/fs/locks.c @@ -276,8 +276,10 @@ void locks_release_private(struct file_lock *fl) } if (fl->fl_lmops) { - if (fl->fl_lmops->lm_put_owner) - fl->fl_lmops->lm_put_owner(fl); + if (fl->fl_lmops->lm_put_owner) { + fl->fl_lmops->lm_put_owner(fl->fl_owner); + fl->fl_owner = NULL; + } fl->fl_lmops = NULL; } } @@ -333,7 +335,7 @@ void locks_copy_conflock(struct file_lock *new, struct file_lock *fl) if (fl->fl_lmops) { if (fl->fl_lmops->lm_get_owner) - fl->fl_lmops->lm_get_owner(new, fl); + fl->fl_lmops->lm_get_owner(fl->fl_owner); } } EXPORT_SYMBOL(locks_copy_conflock); diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index 8ba1d888f1e6..326a545ea7b2 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -4932,20 +4932,22 @@ nfs4_transform_lock_offset(struct file_lock *lock) lock->fl_end = OFFSET_MAX; } -static void nfsd4_fl_get_owner(struct file_lock *dst, struct file_lock *src) +static fl_owner_t +nfsd4_fl_get_owner(fl_owner_t owner) { - struct nfs4_lockowner *lo = (struct nfs4_lockowner *)src->fl_owner; - dst->fl_owner = (fl_owner_t)lockowner(nfs4_get_stateowner(&lo->lo_owner)); + struct nfs4_lockowner *lo = (struct nfs4_lockowner *)owner; + + nfs4_get_stateowner(&lo->lo_owner); + return owner; } -static void nfsd4_fl_put_owner(struct file_lock *fl) +static void +nfsd4_fl_put_owner(fl_owner_t owner) { - struct nfs4_lockowner *lo = (struct nfs4_lockowner *)fl->fl_owner; + struct nfs4_lockowner *lo = (struct nfs4_lockowner *)owner; - if (lo) { + if (lo) nfs4_put_stateowner(&lo->lo_owner); - fl->fl_owner = NULL; - } } static const struct lock_manager_operations nfsd_posix_mng_ops = { diff --git a/include/linux/fs.h b/include/linux/fs.h index f4131e8ead74..e4111a29697e 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -893,8 +893,8 @@ struct file_lock_operations { struct lock_manager_operations { int (*lm_compare_owner)(struct file_lock *, struct file_lock *); unsigned long (*lm_owner_key)(struct file_lock *); - void (*lm_get_owner)(struct file_lock *, struct file_lock *); - void (*lm_put_owner)(struct file_lock *); + fl_owner_t (*lm_get_owner)(fl_owner_t); + void (*lm_put_owner)(fl_owner_t); void (*lm_notify)(struct file_lock *); /* unblock callback */ int (*lm_grant)(struct file_lock *, int); bool (*lm_break)(struct file_lock *); -- cgit v1.3-14-g43fede From b2edffdd912b4205899a8efa0974dfbbc3216109 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Mon, 6 Apr 2015 17:48:54 -0400 Subject: fix mremap() vs. ioctx_kill() race teach ->mremap() method to return an error and have it fail for aio mappings in process of being killed Note that in case of ->mremap() failure we need to undo move_page_tables() we'd already done; we could call ->mremap() first, but then the failure of move_page_tables() would require undoing whatever _successful_ ->mremap() has done, which would be a lot more headache in general. Signed-off-by: Al Viro --- fs/aio.c | 17 +++++++++++------ include/linux/fs.h | 2 +- mm/mremap.c | 10 ++++++++-- 3 files changed, 20 insertions(+), 9 deletions(-) (limited to 'include/linux/fs.h') diff --git a/fs/aio.c b/fs/aio.c index f8e52a1854c1..58c33dcfb6ca 100644 --- a/fs/aio.c +++ b/fs/aio.c @@ -278,11 +278,11 @@ static int aio_ring_mmap(struct file *file, struct vm_area_struct *vma) return 0; } -static void aio_ring_remap(struct file *file, struct vm_area_struct *vma) +static int aio_ring_remap(struct file *file, struct vm_area_struct *vma) { struct mm_struct *mm = vma->vm_mm; struct kioctx_table *table; - int i; + int i, res = -EINVAL; spin_lock(&mm->ioctx_lock); rcu_read_lock(); @@ -292,13 +292,17 @@ static void aio_ring_remap(struct file *file, struct vm_area_struct *vma) ctx = table->table[i]; if (ctx && ctx->aio_ring_file == file) { - ctx->user_id = ctx->mmap_base = vma->vm_start; + if (!atomic_read(&ctx->dead)) { + ctx->user_id = ctx->mmap_base = vma->vm_start; + res = 0; + } break; } } rcu_read_unlock(); spin_unlock(&mm->ioctx_lock); + return res; } static const struct file_operations aio_ring_fops = { @@ -748,11 +752,12 @@ static int kill_ioctx(struct mm_struct *mm, struct kioctx *ctx, { struct kioctx_table *table; - if (atomic_xchg(&ctx->dead, 1)) + spin_lock(&mm->ioctx_lock); + if (atomic_xchg(&ctx->dead, 1)) { + spin_unlock(&mm->ioctx_lock); return -EINVAL; + } - - spin_lock(&mm->ioctx_lock); table = rcu_dereference_raw(mm->ioctx_table); WARN_ON(ctx != table->table[ctx->id]); table->table[ctx->id] = NULL; diff --git a/include/linux/fs.h b/include/linux/fs.h index f4131e8ead74..52cc4492cb3a 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1549,7 +1549,7 @@ struct file_operations { long (*unlocked_ioctl) (struct file *, unsigned int, unsigned long); long (*compat_ioctl) (struct file *, unsigned int, unsigned long); int (*mmap) (struct file *, struct vm_area_struct *); - void (*mremap)(struct file *, struct vm_area_struct *); + int (*mremap)(struct file *, struct vm_area_struct *); int (*open) (struct inode *, struct file *); int (*flush) (struct file *, fl_owner_t id); int (*release) (struct inode *, struct file *); diff --git a/mm/mremap.c b/mm/mremap.c index 57dadc025c64..2dc44b1cb1df 100644 --- a/mm/mremap.c +++ b/mm/mremap.c @@ -286,8 +286,14 @@ static unsigned long move_vma(struct vm_area_struct *vma, old_len = new_len; old_addr = new_addr; new_addr = -ENOMEM; - } else if (vma->vm_file && vma->vm_file->f_op->mremap) - vma->vm_file->f_op->mremap(vma->vm_file, new_vma); + } else if (vma->vm_file && vma->vm_file->f_op->mremap) { + err = vma->vm_file->f_op->mremap(vma->vm_file, new_vma); + if (err < 0) { + move_page_tables(new_vma, new_addr, vma, old_addr, + moved_len, true); + return err; + } + } /* Conceal VM_ACCOUNT so old reservation is not undone */ if (vm_flags & VM_ACCOUNT) { -- cgit v1.3-14-g43fede From fd2f7cb5bcac58b63717cd45366bff9a6ab961c6 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 22 Feb 2015 20:07:13 -0500 Subject: kill struct filename.separate just make const char iname[] the last member and compare name->name with name->iname instead of checking name->separate We need to make sure that out-of-line name doesn't end up allocated adjacent to struct filename refering to it; fortunately, it's easy to achieve - just allocate that struct filename with one byte in ->iname[], so that ->iname[0] will be inside the same object and thus have an address different from that of out-of-line name [spotted by Boqun Feng ] Signed-off-by: Al Viro --- fs/namei.c | 29 ++++++++++++++++------------- include/linux/fs.h | 2 +- 2 files changed, 17 insertions(+), 14 deletions(-) (limited to 'include/linux/fs.h') diff --git a/fs/namei.c b/fs/namei.c index 2c4b68c12550..6218e62a0534 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -119,7 +119,7 @@ * PATH_MAX includes the nul terminator --RR. */ -#define EMBEDDED_NAME_MAX (PATH_MAX - sizeof(struct filename)) +#define EMBEDDED_NAME_MAX (PATH_MAX - offsetof(struct filename, iname)) struct filename * getname_flags(const char __user *filename, int flags, int *empty) @@ -140,9 +140,8 @@ getname_flags(const char __user *filename, int flags, int *empty) * First, try to embed the struct filename inside the names_cache * allocation */ - kname = (char *)result + sizeof(*result); + kname = (char *)result->iname; result->name = kname; - result->separate = false; len = strncpy_from_user(kname, filename, EMBEDDED_NAME_MAX); if (unlikely(len < 0)) { @@ -157,15 +156,20 @@ getname_flags(const char __user *filename, int flags, int *empty) * userland. */ if (unlikely(len == EMBEDDED_NAME_MAX)) { + const size_t size = offsetof(struct filename, iname[1]); kname = (char *)result; - result = kzalloc(sizeof(*result), GFP_KERNEL); + /* + * size is chosen that way we to guarantee that + * result->iname[0] is within the same object and that + * kname can't be equal to result->iname, no matter what. + */ + result = kzalloc(size, GFP_KERNEL); if (unlikely(!result)) { __putname(kname); return ERR_PTR(-ENOMEM); } result->name = kname; - result->separate = true; len = strncpy_from_user(kname, filename, PATH_MAX); if (unlikely(len < 0)) { __putname(kname); @@ -213,8 +217,7 @@ getname_kernel(const char * filename) return ERR_PTR(-ENOMEM); if (len <= EMBEDDED_NAME_MAX) { - result->name = (char *)(result) + sizeof(*result); - result->separate = false; + result->name = (char *)result->iname; } else if (len <= PATH_MAX) { struct filename *tmp; @@ -224,7 +227,6 @@ getname_kernel(const char * filename) return ERR_PTR(-ENOMEM); } tmp->name = (char *)result; - tmp->separate = true; result = tmp; } else { __putname(result); @@ -246,7 +248,7 @@ void putname(struct filename *name) if (--name->refcnt > 0) return; - if (name->separate) { + if (name->name != name->iname) { __putname(name->name); kfree(name); } else @@ -1852,6 +1854,7 @@ static int path_init(int dfd, const struct filename *name, unsigned int flags, struct nameidata *nd) { int retval = 0; + const char *s = name->name; nd->last_type = LAST_ROOT; /* if there are only slashes... */ nd->flags = flags | LOOKUP_JUMPED | LOOKUP_PARENT; @@ -1860,7 +1863,7 @@ static int path_init(int dfd, const struct filename *name, unsigned int flags, if (flags & LOOKUP_ROOT) { struct dentry *root = nd->root.dentry; struct inode *inode = root->d_inode; - if (name->name[0]) { + if (*s) { if (!d_can_lookup(root)) return -ENOTDIR; retval = inode_permission(inode, MAY_EXEC); @@ -1882,7 +1885,7 @@ static int path_init(int dfd, const struct filename *name, unsigned int flags, nd->root.mnt = NULL; nd->m_seq = read_seqbegin(&mount_lock); - if (name->name[0] == '/') { + if (*s == '/') { if (flags & LOOKUP_RCU) { rcu_read_lock(); nd->seq = set_root_rcu(nd); @@ -1916,7 +1919,7 @@ static int path_init(int dfd, const struct filename *name, unsigned int flags, dentry = f.file->f_path.dentry; - if (name->name[0]) { + if (*s) { if (!d_can_lookup(dentry)) { fdput(f); return -ENOTDIR; @@ -1946,7 +1949,7 @@ static int path_init(int dfd, const struct filename *name, unsigned int flags, return -ECHILD; done: current->total_link_count = 0; - return link_path_walk(name->name, nd); + return link_path_walk(s, nd); } static void path_cleanup(struct nameidata *nd) diff --git a/include/linux/fs.h b/include/linux/fs.h index b4d71b5e1ff2..d70e333988f1 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2144,7 +2144,7 @@ struct filename { const __user char *uptr; /* original userland pointer */ struct audit_names *aname; int refcnt; - bool separate; /* should "name" be freed? */ + const char iname[]; }; extern long vfs_truncate(struct path *, loff_t); -- cgit v1.3-14-g43fede From 493c84c0722ac991a96df2fd6c7798b2126b626c Mon Sep 17 00:00:00 2001 From: Al Viro Date: Fri, 3 Apr 2015 15:06:43 -0400 Subject: new helper: __vfs_write() Signed-off-by: Al Viro --- fs/read_write.c | 28 ++++++++++++++++------------ include/linux/fs.h | 1 + 2 files changed, 17 insertions(+), 12 deletions(-) (limited to 'include/linux/fs.h') diff --git a/fs/read_write.c b/fs/read_write.c index 69128b378646..9d7952a6829b 100644 --- a/fs/read_write.c +++ b/fs/read_write.c @@ -527,6 +527,20 @@ ssize_t new_sync_write(struct file *filp, const char __user *buf, size_t len, lo EXPORT_SYMBOL(new_sync_write); +ssize_t __vfs_write(struct file *file, const char __user *p, size_t count, + loff_t *pos) +{ + if (file->f_op->write) + return file->f_op->write(file, p, count, pos); + else if (file->f_op->aio_write) + return do_sync_write(file, p, count, pos); + else if (file->f_op->write_iter) + return new_sync_write(file, p, count, pos); + else + return -EINVAL; +} +EXPORT_SYMBOL(__vfs_write); + ssize_t __kernel_write(struct file *file, const char *buf, size_t count, loff_t *pos) { mm_segment_t old_fs; @@ -541,12 +555,7 @@ ssize_t __kernel_write(struct file *file, const char *buf, size_t count, loff_t p = (__force const char __user *)buf; if (count > MAX_RW_COUNT) count = MAX_RW_COUNT; - if (file->f_op->write) - ret = file->f_op->write(file, p, count, pos); - else if (file->f_op->aio_write) - ret = do_sync_write(file, p, count, pos); - else - ret = new_sync_write(file, p, count, pos); + ret = __vfs_write(file, p, count, pos); set_fs(old_fs); if (ret > 0) { fsnotify_modify(file); @@ -573,12 +582,7 @@ ssize_t vfs_write(struct file *file, const char __user *buf, size_t count, loff_ if (ret >= 0) { count = ret; file_start_write(file); - if (file->f_op->write) - ret = file->f_op->write(file, buf, count, pos); - else if (file->f_op->aio_write) - ret = do_sync_write(file, buf, count, pos); - else - ret = new_sync_write(file, buf, count, pos); + ret = __vfs_write(file, buf, count, pos); if (ret > 0) { fsnotify_modify(file); add_wchar(current, ret); diff --git a/include/linux/fs.h b/include/linux/fs.h index 20fe15fe236d..4a1cb00bd805 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1639,6 +1639,7 @@ ssize_t rw_copy_check_uvector(int type, const struct iovec __user * uvector, struct iovec **ret_pointer); extern ssize_t __vfs_read(struct file *, char __user *, size_t, loff_t *); +extern ssize_t __vfs_write(struct file *, const char __user *, size_t, loff_t *); extern ssize_t vfs_read(struct file *, char __user *, size_t, loff_t *); extern ssize_t vfs_write(struct file *, const char __user *, size_t, loff_t *); extern ssize_t vfs_readv(struct file *, const struct iovec __user *, -- cgit v1.3-14-g43fede From 5d5d568975307877e9195f5305f4240e506a2807 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Fri, 3 Apr 2015 15:41:18 -0400 Subject: make new_sync_{read,write}() static All places outside of core VFS that checked ->read and ->write for being NULL or called the methods directly are gone now, so NULL {read,write} with non-NULL {read,write}_iter will do the right thing in all cases. Signed-off-by: Al Viro --- Documentation/filesystems/porting | 9 +++++++++ arch/s390/hypfs/inode.c | 2 -- drivers/char/mem.c | 2 -- drivers/char/raw.c | 2 -- drivers/net/macvtap.c | 2 -- drivers/net/tun.c | 2 -- drivers/staging/lustre/lustre/llite/file.c | 6 ------ drivers/usb/gadget/function/f_fs.c | 2 -- drivers/usb/gadget/legacy/inode.c | 2 -- fs/9p/vfs_file.c | 12 ------------ fs/adfs/file.c | 2 -- fs/affs/file.c | 2 -- fs/afs/file.c | 2 -- fs/bfs/file.c | 2 -- fs/block_dev.c | 2 -- fs/btrfs/file.c | 2 -- fs/ceph/file.c | 2 -- fs/cifs/cifsfs.c | 12 ------------ fs/coda/file.c | 2 -- fs/ecryptfs/file.c | 2 -- fs/exofs/file.c | 2 -- fs/ext2/file.c | 4 ---- fs/ext3/file.c | 2 -- fs/ext4/file.c | 4 ---- fs/f2fs/file.c | 2 -- fs/fat/file.c | 2 -- fs/fuse/cuse.c | 2 -- fs/fuse/file.c | 4 ---- fs/gfs2/file.c | 4 ---- fs/hfs/inode.c | 2 -- fs/hfsplus/inode.c | 2 -- fs/hostfs/hostfs_kern.c | 2 -- fs/hpfs/file.c | 2 -- fs/hugetlbfs/inode.c | 1 - fs/jffs2/file.c | 2 -- fs/jfs/file.c | 2 -- fs/logfs/file.c | 2 -- fs/minix/file.c | 2 -- fs/ncpfs/file.c | 2 -- fs/nfs/file.c | 2 -- fs/nfs/nfs4file.c | 2 -- fs/nilfs2/file.c | 2 -- fs/ntfs/file.c | 2 -- fs/ocfs2/file.c | 4 ---- fs/omfs/file.c | 2 -- fs/pipe.c | 2 -- fs/ramfs/file-mmu.c | 2 -- fs/ramfs/file-nommu.c | 2 -- fs/read_write.c | 9 ++------- fs/reiserfs/file.c | 2 -- fs/romfs/mmap-nommu.c | 1 - fs/sysv/file.c | 2 -- fs/ubifs/file.c | 2 -- fs/udf/file.c | 2 -- fs/ufs/file.c | 2 -- fs/xfs/xfs_file.c | 2 -- include/linux/fs.h | 2 -- mm/shmem.c | 2 -- net/socket.c | 2 -- 59 files changed, 11 insertions(+), 153 deletions(-) (limited to 'include/linux/fs.h') diff --git a/Documentation/filesystems/porting b/Documentation/filesystems/porting index fa2db081505e..4006483c275f 100644 --- a/Documentation/filesystems/porting +++ b/Documentation/filesystems/porting @@ -471,3 +471,12 @@ in your dentry operations instead. [mandatory] f_dentry is gone; use f_path.dentry, or, better yet, see if you can avoid it entirely. +-- +[mandatory] + never call ->read() and ->write() directly; use __vfs_{read,write} or + wrappers; instead of checking for ->write or ->read being NULL, look for + FMODE_CAN_{WRITE,READ} in file->f_mode. +-- +[mandatory] + do _not_ use new_sync_{read,write} for ->read/->write; leave it NULL + instead. diff --git a/arch/s390/hypfs/inode.c b/arch/s390/hypfs/inode.c index df7d8cbee377..3f5c799b7fb5 100644 --- a/arch/s390/hypfs/inode.c +++ b/arch/s390/hypfs/inode.c @@ -437,8 +437,6 @@ struct dentry *hypfs_create_str(struct dentry *dir, static const struct file_operations hypfs_file_ops = { .open = hypfs_open, .release = hypfs_release, - .read = new_sync_read, - .write = new_sync_write, .read_iter = hypfs_read_iter, .write_iter = hypfs_write_iter, .llseek = no_llseek, diff --git a/drivers/char/mem.c b/drivers/char/mem.c index 9c4fd7a8e2e5..ad08400491ae 100644 --- a/drivers/char/mem.c +++ b/drivers/char/mem.c @@ -764,7 +764,6 @@ static const struct file_operations __maybe_unused port_fops = { static const struct file_operations zero_fops = { .llseek = zero_lseek, - .read = new_sync_read, .write = write_zero, .read_iter = read_iter_zero, .aio_write = aio_write_zero, @@ -776,7 +775,6 @@ static const struct file_operations zero_fops = { static const struct file_operations full_fops = { .llseek = full_lseek, - .read = new_sync_read, .read_iter = read_iter_zero, .write = write_full, }; diff --git a/drivers/char/raw.c b/drivers/char/raw.c index 6e29bf2db536..5fc291c6157e 100644 --- a/drivers/char/raw.c +++ b/drivers/char/raw.c @@ -282,9 +282,7 @@ static long raw_ctl_compat_ioctl(struct file *file, unsigned int cmd, #endif static const struct file_operations raw_fops = { - .read = new_sync_read, .read_iter = blkdev_read_iter, - .write = new_sync_write, .write_iter = blkdev_write_iter, .fsync = blkdev_fsync, .open = raw_open, diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c index 8362aef0c15e..9c91ff872485 100644 --- a/drivers/net/macvtap.c +++ b/drivers/net/macvtap.c @@ -1118,8 +1118,6 @@ static const struct file_operations macvtap_fops = { .owner = THIS_MODULE, .open = macvtap_open, .release = macvtap_release, - .read = new_sync_read, - .write = new_sync_write, .read_iter = macvtap_read_iter, .write_iter = macvtap_write_iter, .poll = macvtap_poll, diff --git a/drivers/net/tun.c b/drivers/net/tun.c index b96b94cee760..e470ae59d405 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -2223,8 +2223,6 @@ static void tun_chr_show_fdinfo(struct seq_file *m, struct file *f) static const struct file_operations tun_fops = { .owner = THIS_MODULE, .llseek = no_llseek, - .read = new_sync_read, - .write = new_sync_write, .read_iter = tun_chr_read_iter, .write_iter = tun_chr_write_iter, .poll = tun_chr_poll, diff --git a/drivers/staging/lustre/lustre/llite/file.c b/drivers/staging/lustre/lustre/llite/file.c index 5ebee6ca0a10..d73111ef949e 100644 --- a/drivers/staging/lustre/lustre/llite/file.c +++ b/drivers/staging/lustre/lustre/llite/file.c @@ -3128,9 +3128,7 @@ int ll_inode_permission(struct inode *inode, int mask) /* -o localflock - only provides locally consistent flock locks */ struct file_operations ll_file_operations = { - .read = new_sync_read, .read_iter = ll_file_read_iter, - .write = new_sync_write, .write_iter = ll_file_write_iter, .unlocked_ioctl = ll_file_ioctl, .open = ll_file_open, @@ -3143,9 +3141,7 @@ struct file_operations ll_file_operations = { }; struct file_operations ll_file_operations_flock = { - .read = new_sync_read, .read_iter = ll_file_read_iter, - .write = new_sync_write, .write_iter = ll_file_write_iter, .unlocked_ioctl = ll_file_ioctl, .open = ll_file_open, @@ -3161,9 +3157,7 @@ struct file_operations ll_file_operations_flock = { /* These are for -o noflock - to return ENOSYS on flock calls */ struct file_operations ll_file_operations_noflock = { - .read = new_sync_read, .read_iter = ll_file_read_iter, - .write = new_sync_write, .write_iter = ll_file_write_iter, .unlocked_ioctl = ll_file_ioctl, .open = ll_file_open, diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c index a12315a78248..6bdb57069044 100644 --- a/drivers/usb/gadget/function/f_fs.c +++ b/drivers/usb/gadget/function/f_fs.c @@ -1061,8 +1061,6 @@ static const struct file_operations ffs_epfile_operations = { .llseek = no_llseek, .open = ffs_epfile_open, - .write = new_sync_write, - .read = new_sync_read, .write_iter = ffs_epfile_write_iter, .read_iter = ffs_epfile_read_iter, .release = ffs_epfile_release, diff --git a/drivers/usb/gadget/legacy/inode.c b/drivers/usb/gadget/legacy/inode.c index 662ef2c1c62b..6af58c6dba5e 100644 --- a/drivers/usb/gadget/legacy/inode.c +++ b/drivers/usb/gadget/legacy/inode.c @@ -699,8 +699,6 @@ static const struct file_operations ep_io_operations = { .open = ep_open, .release = ep_release, .llseek = no_llseek, - .read = new_sync_read, - .write = new_sync_write, .unlocked_ioctl = ep_ioctl, .read_iter = ep_read_iter, .write_iter = ep_write_iter, diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c index 55cc9c80e187..d7fcb775311e 100644 --- a/fs/9p/vfs_file.c +++ b/fs/9p/vfs_file.c @@ -641,8 +641,6 @@ static const struct vm_operations_struct v9fs_mmap_file_vm_ops = { const struct file_operations v9fs_cached_file_operations = { .llseek = generic_file_llseek, - .read = new_sync_read, - .write = new_sync_write, .read_iter = generic_file_read_iter, .write_iter = generic_file_write_iter, .open = v9fs_file_open, @@ -654,8 +652,6 @@ const struct file_operations v9fs_cached_file_operations = { const struct file_operations v9fs_cached_file_operations_dotl = { .llseek = generic_file_llseek, - .read = new_sync_read, - .write = new_sync_write, .read_iter = generic_file_read_iter, .write_iter = generic_file_write_iter, .open = v9fs_file_open, @@ -668,8 +664,6 @@ const struct file_operations v9fs_cached_file_operations_dotl = { const struct file_operations v9fs_file_operations = { .llseek = generic_file_llseek, - .read = new_sync_read, - .write = new_sync_write, .read_iter = v9fs_file_read_iter, .write_iter = v9fs_file_write_iter, .open = v9fs_file_open, @@ -681,8 +675,6 @@ const struct file_operations v9fs_file_operations = { const struct file_operations v9fs_file_operations_dotl = { .llseek = generic_file_llseek, - .read = new_sync_read, - .write = new_sync_write, .read_iter = v9fs_file_read_iter, .write_iter = v9fs_file_write_iter, .open = v9fs_file_open, @@ -695,8 +687,6 @@ const struct file_operations v9fs_file_operations_dotl = { const struct file_operations v9fs_mmap_file_operations = { .llseek = generic_file_llseek, - .read = new_sync_read, - .write = new_sync_write, .read_iter = v9fs_mmap_file_read_iter, .write_iter = v9fs_mmap_file_write_iter, .open = v9fs_file_open, @@ -708,8 +698,6 @@ const struct file_operations v9fs_mmap_file_operations = { const struct file_operations v9fs_mmap_file_operations_dotl = { .llseek = generic_file_llseek, - .read = new_sync_read, - .write = new_sync_write, .read_iter = v9fs_mmap_file_read_iter, .write_iter = v9fs_mmap_file_write_iter, .open = v9fs_file_open, diff --git a/fs/adfs/file.c b/fs/adfs/file.c index 07c9edce5aa7..46c0d5671cd5 100644 --- a/fs/adfs/file.c +++ b/fs/adfs/file.c @@ -23,11 +23,9 @@ const struct file_operations adfs_file_operations = { .llseek = generic_file_llseek, - .read = new_sync_read, .read_iter = generic_file_read_iter, .mmap = generic_file_mmap, .fsync = generic_file_fsync, - .write = new_sync_write, .write_iter = generic_file_write_iter, .splice_read = generic_file_splice_read, }; diff --git a/fs/affs/file.c b/fs/affs/file.c index 3aa7eb66547e..7c1a3d4c19c2 100644 --- a/fs/affs/file.c +++ b/fs/affs/file.c @@ -969,9 +969,7 @@ int affs_file_fsync(struct file *filp, loff_t start, loff_t end, int datasync) } const struct file_operations affs_file_operations = { .llseek = generic_file_llseek, - .read = new_sync_read, .read_iter = generic_file_read_iter, - .write = new_sync_write, .write_iter = generic_file_write_iter, .mmap = generic_file_mmap, .open = affs_file_open, diff --git a/fs/afs/file.c b/fs/afs/file.c index 932ce07948b3..999bc3caec92 100644 --- a/fs/afs/file.c +++ b/fs/afs/file.c @@ -31,8 +31,6 @@ const struct file_operations afs_file_operations = { .open = afs_open, .release = afs_release, .llseek = generic_file_llseek, - .read = new_sync_read, - .write = new_sync_write, .read_iter = generic_file_read_iter, .write_iter = afs_file_write, .mmap = generic_file_readonly_mmap, diff --git a/fs/bfs/file.c b/fs/bfs/file.c index e7f88ace1a25..97f1b5160155 100644 --- a/fs/bfs/file.c +++ b/fs/bfs/file.c @@ -23,9 +23,7 @@ const struct file_operations bfs_file_operations = { .llseek = generic_file_llseek, - .read = new_sync_read, .read_iter = generic_file_read_iter, - .write = new_sync_write, .write_iter = generic_file_write_iter, .mmap = generic_file_mmap, .splice_read = generic_file_splice_read, diff --git a/fs/block_dev.c b/fs/block_dev.c index 2e522aed6584..b5e87896f517 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -1659,8 +1659,6 @@ const struct file_operations def_blk_fops = { .open = blkdev_open, .release = blkdev_close, .llseek = block_llseek, - .read = new_sync_read, - .write = new_sync_write, .read_iter = blkdev_read_iter, .write_iter = blkdev_write_iter, .mmap = generic_file_mmap, diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index aee18f84e315..cdc801c85105 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -2806,8 +2806,6 @@ out: const struct file_operations btrfs_file_operations = { .llseek = btrfs_file_llseek, - .read = new_sync_read, - .write = new_sync_write, .read_iter = generic_file_read_iter, .splice_read = generic_file_splice_read, .write_iter = btrfs_file_write_iter, diff --git a/fs/ceph/file.c b/fs/ceph/file.c index 139f2fea91a0..56237ea5fc22 100644 --- a/fs/ceph/file.c +++ b/fs/ceph/file.c @@ -1331,8 +1331,6 @@ const struct file_operations ceph_file_fops = { .open = ceph_open, .release = ceph_release, .llseek = ceph_llseek, - .read = new_sync_read, - .write = new_sync_write, .read_iter = ceph_read_iter, .write_iter = ceph_write_iter, .mmap = ceph_mmap, diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c index d72fe37f5420..eaab4b2a0595 100644 --- a/fs/cifs/cifsfs.c +++ b/fs/cifs/cifsfs.c @@ -906,8 +906,6 @@ const struct inode_operations cifs_symlink_inode_ops = { }; const struct file_operations cifs_file_ops = { - .read = new_sync_read, - .write = new_sync_write, .read_iter = cifs_loose_read_iter, .write_iter = cifs_file_write_iter, .open = cifs_open, @@ -926,8 +924,6 @@ const struct file_operations cifs_file_ops = { }; const struct file_operations cifs_file_strict_ops = { - .read = new_sync_read, - .write = new_sync_write, .read_iter = cifs_strict_readv, .write_iter = cifs_strict_writev, .open = cifs_open, @@ -947,8 +943,6 @@ const struct file_operations cifs_file_strict_ops = { const struct file_operations cifs_file_direct_ops = { /* BB reevaluate whether they can be done with directio, no cache */ - .read = new_sync_read, - .write = new_sync_write, .read_iter = cifs_user_readv, .write_iter = cifs_user_writev, .open = cifs_open, @@ -967,8 +961,6 @@ const struct file_operations cifs_file_direct_ops = { }; const struct file_operations cifs_file_nobrl_ops = { - .read = new_sync_read, - .write = new_sync_write, .read_iter = cifs_loose_read_iter, .write_iter = cifs_file_write_iter, .open = cifs_open, @@ -986,8 +978,6 @@ const struct file_operations cifs_file_nobrl_ops = { }; const struct file_operations cifs_file_strict_nobrl_ops = { - .read = new_sync_read, - .write = new_sync_write, .read_iter = cifs_strict_readv, .write_iter = cifs_strict_writev, .open = cifs_open, @@ -1006,8 +996,6 @@ const struct file_operations cifs_file_strict_nobrl_ops = { const struct file_operations cifs_file_direct_nobrl_ops = { /* BB reevaluate whether they can be done with directio, no cache */ - .read = new_sync_read, - .write = new_sync_write, .read_iter = cifs_user_readv, .write_iter = cifs_user_writev, .open = cifs_open, diff --git a/fs/coda/file.c b/fs/coda/file.c index d9f1d9a85e04..1da3805f3ddc 100644 --- a/fs/coda/file.c +++ b/fs/coda/file.c @@ -219,8 +219,6 @@ int coda_fsync(struct file *coda_file, loff_t start, loff_t end, int datasync) const struct file_operations coda_file_operations = { .llseek = generic_file_llseek, - .read = new_sync_read, - .write = new_sync_write, .read_iter = coda_file_read_iter, .write_iter = coda_file_write_iter, .mmap = coda_file_mmap, diff --git a/fs/ecryptfs/file.c b/fs/ecryptfs/file.c index 79675089443d..a65786e26b05 100644 --- a/fs/ecryptfs/file.c +++ b/fs/ecryptfs/file.c @@ -358,9 +358,7 @@ const struct file_operations ecryptfs_dir_fops = { const struct file_operations ecryptfs_main_fops = { .llseek = generic_file_llseek, - .read = new_sync_read, .read_iter = ecryptfs_read_update_atime, - .write = new_sync_write, .write_iter = generic_file_write_iter, .iterate = ecryptfs_readdir, .unlocked_ioctl = ecryptfs_unlocked_ioctl, diff --git a/fs/exofs/file.c b/fs/exofs/file.c index 1a376b42d305..906de66e8e7e 100644 --- a/fs/exofs/file.c +++ b/fs/exofs/file.c @@ -67,8 +67,6 @@ static int exofs_flush(struct file *file, fl_owner_t id) const struct file_operations exofs_file_operations = { .llseek = generic_file_llseek, - .read = new_sync_read, - .write = new_sync_write, .read_iter = generic_file_read_iter, .write_iter = generic_file_write_iter, .mmap = generic_file_mmap, diff --git a/fs/ext2/file.c b/fs/ext2/file.c index e31701713516..ef04fdb57dbf 100644 --- a/fs/ext2/file.c +++ b/fs/ext2/file.c @@ -92,8 +92,6 @@ int ext2_fsync(struct file *file, loff_t start, loff_t end, int datasync) */ const struct file_operations ext2_file_operations = { .llseek = generic_file_llseek, - .read = new_sync_read, - .write = new_sync_write, .read_iter = generic_file_read_iter, .write_iter = generic_file_write_iter, .unlocked_ioctl = ext2_ioctl, @@ -111,8 +109,6 @@ const struct file_operations ext2_file_operations = { #ifdef CONFIG_FS_DAX const struct file_operations ext2_dax_file_operations = { .llseek = generic_file_llseek, - .read = new_sync_read, - .write = new_sync_write, .read_iter = generic_file_read_iter, .write_iter = generic_file_write_iter, .unlocked_ioctl = ext2_ioctl, diff --git a/fs/ext3/file.c b/fs/ext3/file.c index a062fa1e1b11..3b8f650de22c 100644 --- a/fs/ext3/file.c +++ b/fs/ext3/file.c @@ -50,8 +50,6 @@ static int ext3_release_file (struct inode * inode, struct file * filp) const struct file_operations ext3_file_operations = { .llseek = generic_file_llseek, - .read = new_sync_read, - .write = new_sync_write, .read_iter = generic_file_read_iter, .write_iter = generic_file_write_iter, .unlocked_ioctl = ext3_ioctl, diff --git a/fs/ext4/file.c b/fs/ext4/file.c index 598abbbe6786..9ad03036d9f5 100644 --- a/fs/ext4/file.c +++ b/fs/ext4/file.c @@ -607,8 +607,6 @@ loff_t ext4_llseek(struct file *file, loff_t offset, int whence) const struct file_operations ext4_file_operations = { .llseek = ext4_llseek, - .read = new_sync_read, - .write = new_sync_write, .read_iter = generic_file_read_iter, .write_iter = ext4_file_write_iter, .unlocked_ioctl = ext4_ioctl, @@ -627,8 +625,6 @@ const struct file_operations ext4_file_operations = { #ifdef CONFIG_FS_DAX const struct file_operations ext4_dax_file_operations = { .llseek = ext4_llseek, - .read = new_sync_read, - .write = new_sync_write, .read_iter = generic_file_read_iter, .write_iter = ext4_file_write_iter, .unlocked_ioctl = ext4_ioctl, diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 98dac27bc3f7..df6a0596eccf 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -1104,8 +1104,6 @@ long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) const struct file_operations f2fs_file_operations = { .llseek = f2fs_llseek, - .read = new_sync_read, - .write = new_sync_write, .read_iter = generic_file_read_iter, .write_iter = generic_file_write_iter, .open = generic_file_open, diff --git a/fs/fat/file.c b/fs/fat/file.c index 8429c68e3057..1e98d333879f 100644 --- a/fs/fat/file.c +++ b/fs/fat/file.c @@ -170,8 +170,6 @@ int fat_file_fsync(struct file *filp, loff_t start, loff_t end, int datasync) const struct file_operations fat_file_operations = { .llseek = generic_file_llseek, - .read = new_sync_read, - .write = new_sync_write, .read_iter = generic_file_read_iter, .write_iter = generic_file_write_iter, .mmap = generic_file_mmap, diff --git a/fs/fuse/cuse.c b/fs/fuse/cuse.c index 644f05744993..e5bbf748b698 100644 --- a/fs/fuse/cuse.c +++ b/fs/fuse/cuse.c @@ -177,8 +177,6 @@ static long cuse_file_compat_ioctl(struct file *file, unsigned int cmd, static const struct file_operations cuse_frontend_fops = { .owner = THIS_MODULE, - .read = new_sync_read, - .write = new_sync_write, .read_iter = cuse_read_iter, .write_iter = cuse_write_iter, .open = cuse_open, diff --git a/fs/fuse/file.c b/fs/fuse/file.c index 727e139e1fea..e1afdd7abf90 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -2953,9 +2953,7 @@ out: static const struct file_operations fuse_file_operations = { .llseek = fuse_file_llseek, - .read = new_sync_read, .read_iter = fuse_file_read_iter, - .write = new_sync_write, .write_iter = fuse_file_write_iter, .mmap = fuse_file_mmap, .open = fuse_open, @@ -2973,9 +2971,7 @@ static const struct file_operations fuse_file_operations = { static const struct file_operations fuse_direct_io_file_operations = { .llseek = fuse_file_llseek, - .read = new_sync_read, .read_iter = fuse_direct_read_iter, - .write = new_sync_write, .write_iter = fuse_direct_write_iter, .mmap = fuse_direct_mmap, .open = fuse_open, diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c index f6fc412b1100..614bb42cb7e1 100644 --- a/fs/gfs2/file.c +++ b/fs/gfs2/file.c @@ -1064,9 +1064,7 @@ static int gfs2_flock(struct file *file, int cmd, struct file_lock *fl) const struct file_operations gfs2_file_fops = { .llseek = gfs2_llseek, - .read = new_sync_read, .read_iter = generic_file_read_iter, - .write = new_sync_write, .write_iter = gfs2_file_write_iter, .unlocked_ioctl = gfs2_ioctl, .mmap = gfs2_mmap, @@ -1096,9 +1094,7 @@ const struct file_operations gfs2_dir_fops = { const struct file_operations gfs2_file_fops_nolock = { .llseek = gfs2_llseek, - .read = new_sync_read, .read_iter = generic_file_read_iter, - .write = new_sync_write, .write_iter = gfs2_file_write_iter, .unlocked_ioctl = gfs2_ioctl, .mmap = gfs2_mmap, diff --git a/fs/hfs/inode.c b/fs/hfs/inode.c index 98d4ea45bb70..9337065bcc67 100644 --- a/fs/hfs/inode.c +++ b/fs/hfs/inode.c @@ -674,9 +674,7 @@ static int hfs_file_fsync(struct file *filp, loff_t start, loff_t end, static const struct file_operations hfs_file_operations = { .llseek = generic_file_llseek, - .read = new_sync_read, .read_iter = generic_file_read_iter, - .write = new_sync_write, .write_iter = generic_file_write_iter, .mmap = generic_file_mmap, .splice_read = generic_file_splice_read, diff --git a/fs/hfsplus/inode.c b/fs/hfsplus/inode.c index f541196d4ee9..5f86cadb0542 100644 --- a/fs/hfsplus/inode.c +++ b/fs/hfsplus/inode.c @@ -341,9 +341,7 @@ static const struct inode_operations hfsplus_file_inode_operations = { static const struct file_operations hfsplus_file_operations = { .llseek = generic_file_llseek, - .read = new_sync_read, .read_iter = generic_file_read_iter, - .write = new_sync_write, .write_iter = generic_file_write_iter, .mmap = generic_file_mmap, .splice_read = generic_file_splice_read, diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c index fd62cae0fdcb..e021188ca110 100644 --- a/fs/hostfs/hostfs_kern.c +++ b/fs/hostfs/hostfs_kern.c @@ -378,11 +378,9 @@ static int hostfs_fsync(struct file *file, loff_t start, loff_t end, static const struct file_operations hostfs_file_fops = { .llseek = generic_file_llseek, - .read = new_sync_read, .splice_read = generic_file_splice_read, .read_iter = generic_file_read_iter, .write_iter = generic_file_write_iter, - .write = new_sync_write, .mmap = generic_file_mmap, .open = hostfs_file_open, .release = hostfs_file_release, diff --git a/fs/hpfs/file.c b/fs/hpfs/file.c index 7f54e5f76cec..6d8cfe9b52d6 100644 --- a/fs/hpfs/file.c +++ b/fs/hpfs/file.c @@ -197,9 +197,7 @@ const struct address_space_operations hpfs_aops = { const struct file_operations hpfs_file_ops = { .llseek = generic_file_llseek, - .read = new_sync_read, .read_iter = generic_file_read_iter, - .write = new_sync_write, .write_iter = generic_file_write_iter, .mmap = generic_file_mmap, .release = hpfs_file_release, diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c index 5291c14ee6b8..8c2dad629e7c 100644 --- a/fs/hugetlbfs/inode.c +++ b/fs/hugetlbfs/inode.c @@ -696,7 +696,6 @@ static void init_once(void *foo) } const struct file_operations hugetlbfs_file_operations = { - .read = new_sync_read, .read_iter = hugetlbfs_read_iter, .mmap = hugetlbfs_file_mmap, .fsync = noop_fsync, diff --git a/fs/jffs2/file.c b/fs/jffs2/file.c index 64989ca9ba90..f509f62e12f6 100644 --- a/fs/jffs2/file.c +++ b/fs/jffs2/file.c @@ -51,9 +51,7 @@ const struct file_operations jffs2_file_operations = { .llseek = generic_file_llseek, .open = generic_file_open, - .read = new_sync_read, .read_iter = generic_file_read_iter, - .write = new_sync_write, .write_iter = generic_file_write_iter, .unlocked_ioctl=jffs2_ioctl, .mmap = generic_file_readonly_mmap, diff --git a/fs/jfs/file.c b/fs/jfs/file.c index 10815f8dfd8b..ae46788b9723 100644 --- a/fs/jfs/file.c +++ b/fs/jfs/file.c @@ -151,8 +151,6 @@ const struct inode_operations jfs_file_inode_operations = { const struct file_operations jfs_file_operations = { .open = jfs_open, .llseek = generic_file_llseek, - .write = new_sync_write, - .read = new_sync_read, .read_iter = generic_file_read_iter, .write_iter = generic_file_write_iter, .mmap = generic_file_mmap, diff --git a/fs/logfs/file.c b/fs/logfs/file.c index 8538752df2f6..b2c13f739ffa 100644 --- a/fs/logfs/file.c +++ b/fs/logfs/file.c @@ -271,8 +271,6 @@ const struct file_operations logfs_reg_fops = { .llseek = generic_file_llseek, .mmap = generic_file_readonly_mmap, .open = generic_file_open, - .read = new_sync_read, - .write = new_sync_write, }; const struct address_space_operations logfs_reg_aops = { diff --git a/fs/minix/file.c b/fs/minix/file.c index a967de085ac0..6d63e27ec961 100644 --- a/fs/minix/file.c +++ b/fs/minix/file.c @@ -14,9 +14,7 @@ */ const struct file_operations minix_file_operations = { .llseek = generic_file_llseek, - .read = new_sync_read, .read_iter = generic_file_read_iter, - .write = new_sync_write, .write_iter = generic_file_write_iter, .mmap = generic_file_mmap, .fsync = generic_file_fsync, diff --git a/fs/ncpfs/file.c b/fs/ncpfs/file.c index 5f9d5624e377..479bf8db264e 100644 --- a/fs/ncpfs/file.c +++ b/fs/ncpfs/file.c @@ -249,8 +249,6 @@ static int ncp_release(struct inode *inode, struct file *file) { const struct file_operations ncp_file_operations = { .llseek = generic_file_llseek, - .read = new_sync_read, - .write = new_sync_write, .read_iter = ncp_file_read_iter, .write_iter = ncp_file_write_iter, .unlocked_ioctl = ncp_ioctl, diff --git a/fs/nfs/file.c b/fs/nfs/file.c index 37b15582e0de..f6a3adedf027 100644 --- a/fs/nfs/file.c +++ b/fs/nfs/file.c @@ -926,8 +926,6 @@ EXPORT_SYMBOL_GPL(nfs_flock); const struct file_operations nfs_file_operations = { .llseek = nfs_file_llseek, - .read = new_sync_read, - .write = new_sync_write, .read_iter = nfs_file_read, .write_iter = nfs_file_write, .mmap = nfs_file_mmap, diff --git a/fs/nfs/nfs4file.c b/fs/nfs/nfs4file.c index 8b46389c4c5b..0181cde1d102 100644 --- a/fs/nfs/nfs4file.c +++ b/fs/nfs/nfs4file.c @@ -170,8 +170,6 @@ const struct file_operations nfs4_file_operations = { #else .llseek = nfs_file_llseek, #endif - .read = new_sync_read, - .write = new_sync_write, .read_iter = nfs_file_read, .write_iter = nfs_file_write, .mmap = nfs_file_mmap, diff --git a/fs/nilfs2/file.c b/fs/nilfs2/file.c index a8c728acb7a8..54575e3cc1a2 100644 --- a/fs/nilfs2/file.c +++ b/fs/nilfs2/file.c @@ -143,8 +143,6 @@ static int nilfs_file_mmap(struct file *file, struct vm_area_struct *vma) */ const struct file_operations nilfs_file_operations = { .llseek = generic_file_llseek, - .read = new_sync_read, - .write = new_sync_write, .read_iter = generic_file_read_iter, .write_iter = generic_file_write_iter, .unlocked_ioctl = nilfs_ioctl, diff --git a/fs/ntfs/file.c b/fs/ntfs/file.c index c1da78dad1af..840e95e3f1d2 100644 --- a/fs/ntfs/file.c +++ b/fs/ntfs/file.c @@ -2048,10 +2048,8 @@ static int ntfs_file_fsync(struct file *filp, loff_t start, loff_t end, const struct file_operations ntfs_file_ops = { .llseek = generic_file_llseek, - .read = new_sync_read, .read_iter = generic_file_read_iter, #ifdef NTFS_RW - .write = new_sync_write, .write_iter = ntfs_file_write_iter, .fsync = ntfs_file_fsync, #endif /* NTFS_RW */ diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c index 266845de2100..0a6ec7e6efd8 100644 --- a/fs/ocfs2/file.c +++ b/fs/ocfs2/file.c @@ -2676,8 +2676,6 @@ const struct inode_operations ocfs2_special_file_iops = { */ const struct file_operations ocfs2_fops = { .llseek = ocfs2_file_llseek, - .read = new_sync_read, - .write = new_sync_write, .mmap = ocfs2_mmap, .fsync = ocfs2_sync_file, .release = ocfs2_file_release, @@ -2724,8 +2722,6 @@ const struct file_operations ocfs2_dops = { */ const struct file_operations ocfs2_fops_no_plocks = { .llseek = ocfs2_file_llseek, - .read = new_sync_read, - .write = new_sync_write, .mmap = ocfs2_mmap, .fsync = ocfs2_sync_file, .release = ocfs2_file_release, diff --git a/fs/omfs/file.c b/fs/omfs/file.c index 902e88527fce..f993be7f2156 100644 --- a/fs/omfs/file.c +++ b/fs/omfs/file.c @@ -337,8 +337,6 @@ static sector_t omfs_bmap(struct address_space *mapping, sector_t block) const struct file_operations omfs_file_operations = { .llseek = generic_file_llseek, - .read = new_sync_read, - .write = new_sync_write, .read_iter = generic_file_read_iter, .write_iter = generic_file_write_iter, .mmap = generic_file_mmap, diff --git a/fs/pipe.c b/fs/pipe.c index 2d084f2d0b83..822da5b7cff0 100644 --- a/fs/pipe.c +++ b/fs/pipe.c @@ -946,9 +946,7 @@ err: const struct file_operations pipefifo_fops = { .open = fifo_open, .llseek = no_llseek, - .read = new_sync_read, .read_iter = pipe_read, - .write = new_sync_write, .write_iter = pipe_write, .poll = pipe_poll, .unlocked_ioctl = pipe_ioctl, diff --git a/fs/ramfs/file-mmu.c b/fs/ramfs/file-mmu.c index 4f56de822d2f..183a212694bf 100644 --- a/fs/ramfs/file-mmu.c +++ b/fs/ramfs/file-mmu.c @@ -31,9 +31,7 @@ #include "internal.h" const struct file_operations ramfs_file_operations = { - .read = new_sync_read, .read_iter = generic_file_read_iter, - .write = new_sync_write, .write_iter = generic_file_write_iter, .mmap = generic_file_mmap, .fsync = noop_fsync, diff --git a/fs/ramfs/file-nommu.c b/fs/ramfs/file-nommu.c index f6ab41b39612..0b38befa69f3 100644 --- a/fs/ramfs/file-nommu.c +++ b/fs/ramfs/file-nommu.c @@ -44,9 +44,7 @@ const struct file_operations ramfs_file_operations = { .mmap_capabilities = ramfs_mmap_capabilities, .mmap = ramfs_nommu_mmap, .get_unmapped_area = ramfs_nommu_get_unmapped_area, - .read = new_sync_read, .read_iter = generic_file_read_iter, - .write = new_sync_write, .write_iter = generic_file_write_iter, .fsync = noop_fsync, .splice_read = generic_file_splice_read, diff --git a/fs/read_write.c b/fs/read_write.c index c75e6ef0952c..3ae8eee3b82a 100644 --- a/fs/read_write.c +++ b/fs/read_write.c @@ -28,7 +28,6 @@ typedef ssize_t (*iter_fn_t)(struct kiocb *, struct iov_iter *); const struct file_operations generic_ro_fops = { .llseek = generic_file_llseek, - .read = new_sync_read, .read_iter = generic_file_read_iter, .mmap = generic_file_readonly_mmap, .splice_read = generic_file_splice_read, @@ -428,7 +427,7 @@ ssize_t do_sync_read(struct file *filp, char __user *buf, size_t len, loff_t *pp EXPORT_SYMBOL(do_sync_read); -ssize_t new_sync_read(struct file *filp, char __user *buf, size_t len, loff_t *ppos) +static ssize_t new_sync_read(struct file *filp, char __user *buf, size_t len, loff_t *ppos) { struct iovec iov = { .iov_base = buf, .iov_len = len }; struct kiocb kiocb; @@ -445,8 +444,6 @@ ssize_t new_sync_read(struct file *filp, char __user *buf, size_t len, loff_t *p return ret; } -EXPORT_SYMBOL(new_sync_read); - ssize_t __vfs_read(struct file *file, char __user *buf, size_t count, loff_t *pos) { @@ -505,7 +502,7 @@ ssize_t do_sync_write(struct file *filp, const char __user *buf, size_t len, lof EXPORT_SYMBOL(do_sync_write); -ssize_t new_sync_write(struct file *filp, const char __user *buf, size_t len, loff_t *ppos) +static ssize_t new_sync_write(struct file *filp, const char __user *buf, size_t len, loff_t *ppos) { struct iovec iov = { .iov_base = (void __user *)buf, .iov_len = len }; struct kiocb kiocb; @@ -522,8 +519,6 @@ ssize_t new_sync_write(struct file *filp, const char __user *buf, size_t len, lo return ret; } -EXPORT_SYMBOL(new_sync_write); - ssize_t __vfs_write(struct file *file, const char __user *p, size_t count, loff_t *pos) { diff --git a/fs/reiserfs/file.c b/fs/reiserfs/file.c index 751dd3f4346b..96a1bcf33db4 100644 --- a/fs/reiserfs/file.c +++ b/fs/reiserfs/file.c @@ -243,8 +243,6 @@ drop_write_lock: } const struct file_operations reiserfs_file_operations = { - .read = new_sync_read, - .write = new_sync_write, .unlocked_ioctl = reiserfs_ioctl, #ifdef CONFIG_COMPAT .compat_ioctl = reiserfs_compat_ioctl, diff --git a/fs/romfs/mmap-nommu.c b/fs/romfs/mmap-nommu.c index 7da9e2153953..1118a0dc6b45 100644 --- a/fs/romfs/mmap-nommu.c +++ b/fs/romfs/mmap-nommu.c @@ -81,7 +81,6 @@ static unsigned romfs_mmap_capabilities(struct file *file) const struct file_operations romfs_ro_fops = { .llseek = generic_file_llseek, - .read = new_sync_read, .read_iter = generic_file_read_iter, .splice_read = generic_file_splice_read, .mmap = romfs_mmap, diff --git a/fs/sysv/file.c b/fs/sysv/file.c index b00811c75b24..a48e30410ad1 100644 --- a/fs/sysv/file.c +++ b/fs/sysv/file.c @@ -21,9 +21,7 @@ */ const struct file_operations sysv_file_operations = { .llseek = generic_file_llseek, - .read = new_sync_read, .read_iter = generic_file_read_iter, - .write = new_sync_write, .write_iter = generic_file_write_iter, .mmap = generic_file_mmap, .fsync = generic_file_fsync, diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c index c3d15fe83403..475b15635f11 100644 --- a/fs/ubifs/file.c +++ b/fs/ubifs/file.c @@ -1580,8 +1580,6 @@ const struct inode_operations ubifs_symlink_inode_operations = { const struct file_operations ubifs_file_operations = { .llseek = generic_file_llseek, - .read = new_sync_read, - .write = new_sync_write, .read_iter = generic_file_read_iter, .write_iter = ubifs_write_iter, .mmap = ubifs_file_mmap, diff --git a/fs/udf/file.c b/fs/udf/file.c index 7f885cc8b0b7..74050bff64f4 100644 --- a/fs/udf/file.c +++ b/fs/udf/file.c @@ -240,12 +240,10 @@ static int udf_release_file(struct inode *inode, struct file *filp) } const struct file_operations udf_file_operations = { - .read = new_sync_read, .read_iter = generic_file_read_iter, .unlocked_ioctl = udf_ioctl, .open = generic_file_open, .mmap = generic_file_mmap, - .write = new_sync_write, .write_iter = udf_file_write_iter, .release = udf_release_file, .fsync = generic_file_fsync, diff --git a/fs/ufs/file.c b/fs/ufs/file.c index c84ec010a676..042ddbf110cc 100644 --- a/fs/ufs/file.c +++ b/fs/ufs/file.c @@ -35,9 +35,7 @@ const struct file_operations ufs_file_operations = { .llseek = generic_file_llseek, - .read = new_sync_read, .read_iter = generic_file_read_iter, - .write = new_sync_write, .write_iter = generic_file_write_iter, .mmap = generic_file_mmap, .open = generic_file_open, diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c index f44212fae653..44856c3b9617 100644 --- a/fs/xfs/xfs_file.c +++ b/fs/xfs/xfs_file.c @@ -1386,8 +1386,6 @@ xfs_file_llseek( const struct file_operations xfs_file_operations = { .llseek = xfs_file_llseek, - .read = new_sync_read, - .write = new_sync_write, .read_iter = xfs_file_read_iter, .write_iter = xfs_file_write_iter, .splice_read = xfs_file_splice_read, diff --git a/include/linux/fs.h b/include/linux/fs.h index 4a1cb00bd805..cade1304d27b 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2576,8 +2576,6 @@ extern ssize_t generic_file_direct_write(struct kiocb *, struct iov_iter *, loff extern ssize_t generic_perform_write(struct file *, struct iov_iter *, loff_t); extern ssize_t do_sync_read(struct file *filp, char __user *buf, size_t len, loff_t *ppos); extern ssize_t do_sync_write(struct file *filp, const char __user *buf, size_t len, loff_t *ppos); -extern ssize_t new_sync_read(struct file *filp, char __user *buf, size_t len, loff_t *ppos); -extern ssize_t new_sync_write(struct file *filp, const char __user *buf, size_t len, loff_t *ppos); ssize_t vfs_iter_read(struct file *file, struct iov_iter *iter, loff_t *ppos); ssize_t vfs_iter_write(struct file *file, struct iov_iter *iter, loff_t *ppos); diff --git a/mm/shmem.c b/mm/shmem.c index 80b360c7bcd1..1ea2400b5245 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -3118,8 +3118,6 @@ static const struct file_operations shmem_file_operations = { .mmap = shmem_mmap, #ifdef CONFIG_TMPFS .llseek = shmem_file_llseek, - .read = new_sync_read, - .write = new_sync_write, .read_iter = shmem_file_read_iter, .write_iter = generic_file_write_iter, .fsync = noop_fsync, diff --git a/net/socket.c b/net/socket.c index 5b0126234606..3e33959f3ce5 100644 --- a/net/socket.c +++ b/net/socket.c @@ -140,8 +140,6 @@ static ssize_t sock_splice_read(struct file *file, loff_t *ppos, static const struct file_operations socket_file_ops = { .owner = THIS_MODULE, .llseek = no_llseek, - .read = new_sync_read, - .write = new_sync_write, .read_iter = sock_read_iter, .write_iter = sock_write_iter, .poll = sock_poll, -- cgit v1.3-14-g43fede From 9a219bc70b54523c8f14a3c957179854785ee97c Mon Sep 17 00:00:00 2001 From: Al Viro Date: Fri, 3 Apr 2015 22:10:20 -0400 Subject: kill do_sync_read/do_sync_write all remaining instances of aio_{read,write} (all 4 of them) have explicit ->read and ->write resp.; do_sync_read/do_sync_write is never called by __vfs_read/__vfs_write anymore and no other users had been left. Signed-off-by: Al Viro --- fs/read_write.c | 38 -------------------------------------- include/linux/fs.h | 2 -- 2 files changed, 40 deletions(-) (limited to 'include/linux/fs.h') diff --git a/fs/read_write.c b/fs/read_write.c index 3ae8eee3b82a..3d42d8ee5940 100644 --- a/fs/read_write.c +++ b/fs/read_write.c @@ -410,23 +410,6 @@ int rw_verify_area(int read_write, struct file *file, const loff_t *ppos, size_t return count > MAX_RW_COUNT ? MAX_RW_COUNT : count; } -ssize_t do_sync_read(struct file *filp, char __user *buf, size_t len, loff_t *ppos) -{ - struct iovec iov = { .iov_base = buf, .iov_len = len }; - struct kiocb kiocb; - ssize_t ret; - - init_sync_kiocb(&kiocb, filp); - kiocb.ki_pos = *ppos; - - ret = filp->f_op->aio_read(&kiocb, &iov, 1, kiocb.ki_pos); - BUG_ON(ret == -EIOCBQUEUED); - *ppos = kiocb.ki_pos; - return ret; -} - -EXPORT_SYMBOL(do_sync_read); - static ssize_t new_sync_read(struct file *filp, char __user *buf, size_t len, loff_t *ppos) { struct iovec iov = { .iov_base = buf, .iov_len = len }; @@ -449,8 +432,6 @@ ssize_t __vfs_read(struct file *file, char __user *buf, size_t count, { if (file->f_op->read) return file->f_op->read(file, buf, count, pos); - else if (file->f_op->aio_read) - return do_sync_read(file, buf, count, pos); else if (file->f_op->read_iter) return new_sync_read(file, buf, count, pos); else @@ -485,23 +466,6 @@ ssize_t vfs_read(struct file *file, char __user *buf, size_t count, loff_t *pos) EXPORT_SYMBOL(vfs_read); -ssize_t do_sync_write(struct file *filp, const char __user *buf, size_t len, loff_t *ppos) -{ - struct iovec iov = { .iov_base = (void __user *)buf, .iov_len = len }; - struct kiocb kiocb; - ssize_t ret; - - init_sync_kiocb(&kiocb, filp); - kiocb.ki_pos = *ppos; - - ret = filp->f_op->aio_write(&kiocb, &iov, 1, kiocb.ki_pos); - BUG_ON(ret == -EIOCBQUEUED); - *ppos = kiocb.ki_pos; - return ret; -} - -EXPORT_SYMBOL(do_sync_write); - static ssize_t new_sync_write(struct file *filp, const char __user *buf, size_t len, loff_t *ppos) { struct iovec iov = { .iov_base = (void __user *)buf, .iov_len = len }; @@ -524,8 +488,6 @@ ssize_t __vfs_write(struct file *file, const char __user *p, size_t count, { if (file->f_op->write) return file->f_op->write(file, p, count, pos); - else if (file->f_op->aio_write) - return do_sync_write(file, p, count, pos); else if (file->f_op->write_iter) return new_sync_write(file, p, count, pos); else diff --git a/include/linux/fs.h b/include/linux/fs.h index cade1304d27b..83e122c1a902 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2574,8 +2574,6 @@ extern ssize_t __generic_file_write_iter(struct kiocb *, struct iov_iter *); extern ssize_t generic_file_write_iter(struct kiocb *, struct iov_iter *); extern ssize_t generic_file_direct_write(struct kiocb *, struct iov_iter *, loff_t); extern ssize_t generic_perform_write(struct file *, struct iov_iter *, loff_t); -extern ssize_t do_sync_read(struct file *filp, char __user *buf, size_t len, loff_t *ppos); -extern ssize_t do_sync_write(struct file *filp, const char __user *buf, size_t len, loff_t *ppos); ssize_t vfs_iter_read(struct file *file, struct iov_iter *iter, loff_t *ppos); ssize_t vfs_iter_write(struct file *file, struct iov_iter *iter, loff_t *ppos); -- cgit v1.3-14-g43fede From 8436318205b9f29e45db88850ec60e326327e241 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sat, 4 Apr 2015 01:14:53 -0400 Subject: ->aio_read and ->aio_write removed no remaining users Signed-off-by: Al Viro --- Documentation/filesystems/Locking | 2 -- Documentation/filesystems/porting | 3 +++ Documentation/filesystems/vfs.txt | 6 ------ fs/aio.c | 13 ++----------- fs/file_table.c | 4 ++-- fs/open.c | 4 ++-- fs/read_write.c | 29 ----------------------------- include/linux/fs.h | 2 -- 8 files changed, 9 insertions(+), 54 deletions(-) (limited to 'include/linux/fs.h') diff --git a/Documentation/filesystems/Locking b/Documentation/filesystems/Locking index f91926f2f482..c3cd6279e92e 100644 --- a/Documentation/filesystems/Locking +++ b/Documentation/filesystems/Locking @@ -429,8 +429,6 @@ prototypes: loff_t (*llseek) (struct file *, loff_t, int); ssize_t (*read) (struct file *, char __user *, size_t, loff_t *); ssize_t (*write) (struct file *, const char __user *, size_t, loff_t *); - ssize_t (*aio_read) (struct kiocb *, const struct iovec *, unsigned long, loff_t); - ssize_t (*aio_write) (struct kiocb *, const struct iovec *, unsigned long, loff_t); ssize_t (*read_iter) (struct kiocb *, struct iov_iter *); ssize_t (*write_iter) (struct kiocb *, struct iov_iter *); int (*iterate) (struct file *, struct dir_context *); diff --git a/Documentation/filesystems/porting b/Documentation/filesystems/porting index 4006483c275f..e69274de8d0c 100644 --- a/Documentation/filesystems/porting +++ b/Documentation/filesystems/porting @@ -480,3 +480,6 @@ in your dentry operations instead. [mandatory] do _not_ use new_sync_{read,write} for ->read/->write; leave it NULL instead. +-- +[mandatory] + ->aio_read/->aio_write are gone. Use ->read_iter/->write_iter. diff --git a/Documentation/filesystems/vfs.txt b/Documentation/filesystems/vfs.txt index 966b22829f3b..207cdca68bed 100644 --- a/Documentation/filesystems/vfs.txt +++ b/Documentation/filesystems/vfs.txt @@ -804,8 +804,6 @@ struct file_operations { loff_t (*llseek) (struct file *, loff_t, int); ssize_t (*read) (struct file *, char __user *, size_t, loff_t *); ssize_t (*write) (struct file *, const char __user *, size_t, loff_t *); - ssize_t (*aio_read) (struct kiocb *, const struct iovec *, unsigned long, loff_t); - ssize_t (*aio_write) (struct kiocb *, const struct iovec *, unsigned long, loff_t); ssize_t (*read_iter) (struct kiocb *, struct iov_iter *); ssize_t (*write_iter) (struct kiocb *, struct iov_iter *); int (*iterate) (struct file *, struct dir_context *); @@ -838,14 +836,10 @@ otherwise noted. read: called by read(2) and related system calls - aio_read: vectored, possibly asynchronous read - read_iter: possibly asynchronous read with iov_iter as destination write: called by write(2) and related system calls - aio_write: vectored, possibly asynchronous write - write_iter: possibly asynchronous write with iov_iter as source iterate: called when the VFS needs to read the directory contents diff --git a/fs/aio.c b/fs/aio.c index f0b0a2f8a63f..8eece807abed 100644 --- a/fs/aio.c +++ b/fs/aio.c @@ -1347,8 +1347,6 @@ SYSCALL_DEFINE1(io_destroy, aio_context_t, ctx) return -EINVAL; } -typedef ssize_t (aio_rw_op)(struct kiocb *, const struct iovec *, - unsigned long, loff_t); typedef ssize_t (rw_iter_op)(struct kiocb *, struct iov_iter *); static int aio_setup_vectored_rw(int rw, char __user *buf, size_t len, @@ -1377,7 +1375,6 @@ static ssize_t aio_run_iocb(struct kiocb *req, unsigned opcode, ssize_t ret; int rw; fmode_t mode; - aio_rw_op *rw_op; rw_iter_op *iter_op; struct iovec inline_vecs[UIO_FASTIOV], *iovec = inline_vecs; struct iov_iter iter; @@ -1387,7 +1384,6 @@ static ssize_t aio_run_iocb(struct kiocb *req, unsigned opcode, case IOCB_CMD_PREADV: mode = FMODE_READ; rw = READ; - rw_op = file->f_op->aio_read; iter_op = file->f_op->read_iter; goto rw_common; @@ -1395,14 +1391,13 @@ static ssize_t aio_run_iocb(struct kiocb *req, unsigned opcode, case IOCB_CMD_PWRITEV: mode = FMODE_WRITE; rw = WRITE; - rw_op = file->f_op->aio_write; iter_op = file->f_op->write_iter; goto rw_common; rw_common: if (unlikely(!(file->f_mode & mode))) return -EBADF; - if (!rw_op && !iter_op) + if (!iter_op) return -EINVAL; if (opcode == IOCB_CMD_PREADV || opcode == IOCB_CMD_PWRITEV) @@ -1425,11 +1420,7 @@ rw_common: if (rw == WRITE) file_start_write(file); - if (iter_op) { - ret = iter_op(req, &iter); - } else { - ret = rw_op(req, iter.iov, iter.nr_segs, req->ki_pos); - } + ret = iter_op(req, &iter); if (rw == WRITE) file_end_write(file); diff --git a/fs/file_table.c b/fs/file_table.c index 3f85411b03ce..294174dcc226 100644 --- a/fs/file_table.c +++ b/fs/file_table.c @@ -168,10 +168,10 @@ struct file *alloc_file(struct path *path, fmode_t mode, file->f_inode = path->dentry->d_inode; file->f_mapping = path->dentry->d_inode->i_mapping; if ((mode & FMODE_READ) && - likely(fop->read || fop->aio_read || fop->read_iter)) + likely(fop->read || fop->read_iter)) mode |= FMODE_CAN_READ; if ((mode & FMODE_WRITE) && - likely(fop->write || fop->aio_write || fop->write_iter)) + likely(fop->write || fop->write_iter)) mode |= FMODE_CAN_WRITE; file->f_mode = mode; file->f_op = fop; diff --git a/fs/open.c b/fs/open.c index 6a83c47d5904..6796f04d6032 100644 --- a/fs/open.c +++ b/fs/open.c @@ -734,10 +734,10 @@ static int do_dentry_open(struct file *f, if ((f->f_mode & (FMODE_READ | FMODE_WRITE)) == FMODE_READ) i_readcount_inc(inode); if ((f->f_mode & FMODE_READ) && - likely(f->f_op->read || f->f_op->aio_read || f->f_op->read_iter)) + likely(f->f_op->read || f->f_op->read_iter)) f->f_mode |= FMODE_CAN_READ; if ((f->f_mode & FMODE_WRITE) && - likely(f->f_op->write || f->f_op->aio_write || f->f_op->write_iter)) + likely(f->f_op->write || f->f_op->write_iter)) f->f_mode |= FMODE_CAN_WRITE; f->f_flags &= ~(O_CREAT | O_EXCL | O_NOCTTY | O_TRUNC); diff --git a/fs/read_write.c b/fs/read_write.c index 3d42d8ee5940..45d583c33879 100644 --- a/fs/read_write.c +++ b/fs/read_write.c @@ -22,8 +22,6 @@ #include typedef ssize_t (*io_fn_t)(struct file *, char __user *, size_t, loff_t *); -typedef ssize_t (*iov_fn_t)(struct kiocb *, const struct iovec *, - unsigned long, loff_t); typedef ssize_t (*iter_fn_t)(struct kiocb *, struct iov_iter *); const struct file_operations generic_ro_fops = { @@ -668,21 +666,6 @@ static ssize_t do_iter_readv_writev(struct file *filp, struct iov_iter *iter, return ret; } -static ssize_t do_sync_readv_writev(struct file *filp, struct iov_iter *iter, - loff_t *ppos, iov_fn_t fn) -{ - struct kiocb kiocb; - ssize_t ret; - - init_sync_kiocb(&kiocb, filp); - kiocb.ki_pos = *ppos; - - ret = fn(&kiocb, iter->iov, iter->nr_segs, kiocb.ki_pos); - BUG_ON(ret == -EIOCBQUEUED); - *ppos = kiocb.ki_pos; - return ret; -} - /* Do it by hand, with file-ops */ static ssize_t do_loop_readv_writev(struct file *filp, struct iov_iter *iter, loff_t *ppos, io_fn_t fn) @@ -797,7 +780,6 @@ static ssize_t do_readv_writev(int type, struct file *file, struct iov_iter iter; ssize_t ret; io_fn_t fn; - iov_fn_t fnv; iter_fn_t iter_fn; ret = import_iovec(type, uvector, nr_segs, @@ -812,22 +794,17 @@ static ssize_t do_readv_writev(int type, struct file *file, if (ret < 0) goto out; - fnv = NULL; if (type == READ) { fn = file->f_op->read; - fnv = file->f_op->aio_read; iter_fn = file->f_op->read_iter; } else { fn = (io_fn_t)file->f_op->write; - fnv = file->f_op->aio_write; iter_fn = file->f_op->write_iter; file_start_write(file); } if (iter_fn) ret = do_iter_readv_writev(file, &iter, pos, iter_fn); - else if (fnv) - ret = do_sync_readv_writev(file, &iter, pos, fnv); else ret = do_loop_readv_writev(file, &iter, pos, fn); @@ -977,7 +954,6 @@ static ssize_t compat_do_readv_writev(int type, struct file *file, struct iov_iter iter; ssize_t ret; io_fn_t fn; - iov_fn_t fnv; iter_fn_t iter_fn; ret = compat_import_iovec(type, uvector, nr_segs, @@ -992,22 +968,17 @@ static ssize_t compat_do_readv_writev(int type, struct file *file, if (ret < 0) goto out; - fnv = NULL; if (type == READ) { fn = file->f_op->read; - fnv = file->f_op->aio_read; iter_fn = file->f_op->read_iter; } else { fn = (io_fn_t)file->f_op->write; - fnv = file->f_op->aio_write; iter_fn = file->f_op->write_iter; file_start_write(file); } if (iter_fn) ret = do_iter_readv_writev(file, &iter, pos, iter_fn); - else if (fnv) - ret = do_sync_readv_writev(file, &iter, pos, fnv); else ret = do_loop_readv_writev(file, &iter, pos, fn); diff --git a/include/linux/fs.h b/include/linux/fs.h index 83e122c1a902..f1e3f65255a8 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1562,8 +1562,6 @@ struct file_operations { loff_t (*llseek) (struct file *, loff_t, int); ssize_t (*read) (struct file *, char __user *, size_t, loff_t *); ssize_t (*write) (struct file *, const char __user *, size_t, loff_t *); - ssize_t (*aio_read) (struct kiocb *, const struct iovec *, unsigned long, loff_t); - ssize_t (*aio_write) (struct kiocb *, const struct iovec *, unsigned long, loff_t); ssize_t (*read_iter) (struct kiocb *, struct iov_iter *); ssize_t (*write_iter) (struct kiocb *, struct iov_iter *); int (*iterate) (struct file *, struct dir_context *); -- cgit v1.3-14-g43fede From 17f8c842d24ac054e4212c82b5bd6ae455a334f3 Mon Sep 17 00:00:00 2001 From: Omar Sandoval Date: Mon, 16 Mar 2015 04:33:50 -0700 Subject: Remove rw from {,__,do_}blockdev_direct_IO() Most filesystems call through to these at some point, so we'll start here. Signed-off-by: Omar Sandoval Signed-off-by: Al Viro --- fs/affs/file.c | 2 +- fs/block_dev.c | 5 ++--- fs/btrfs/inode.c | 8 ++++---- fs/direct-io.c | 39 ++++++++++++++++++--------------------- fs/ext2/inode.c | 2 +- fs/ext3/inode.c | 2 +- fs/ext4/indirect.c | 11 ++++++----- fs/ext4/inode.c | 2 +- fs/f2fs/data.c | 2 +- fs/fat/inode.c | 2 +- fs/gfs2/aops.c | 5 ++--- fs/hfs/inode.c | 2 +- fs/hfsplus/inode.c | 3 +-- fs/jfs/inode.c | 2 +- fs/nilfs2/inode.c | 3 +-- fs/ocfs2/aops.c | 16 +++++++--------- fs/reiserfs/inode.c | 2 +- fs/udf/inode.c | 2 +- fs/xfs/xfs_aops.c | 9 ++++----- include/linux/fs.h | 22 ++++++++++++---------- 20 files changed, 67 insertions(+), 74 deletions(-) (limited to 'include/linux/fs.h') diff --git a/fs/affs/file.c b/fs/affs/file.c index 7c1a3d4c19c2..1edc0d4b40db 100644 --- a/fs/affs/file.c +++ b/fs/affs/file.c @@ -405,7 +405,7 @@ affs_direct_IO(int rw, struct kiocb *iocb, struct iov_iter *iter, return 0; } - ret = blockdev_direct_IO(rw, iocb, inode, iter, offset, affs_get_block); + ret = blockdev_direct_IO(iocb, inode, iter, offset, affs_get_block); if (ret < 0 && (rw & WRITE)) affs_write_failed(mapping, offset + count); return ret; diff --git a/fs/block_dev.c b/fs/block_dev.c index b5e87896f517..bc23afd35fdb 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -152,9 +152,8 @@ blkdev_direct_IO(int rw, struct kiocb *iocb, struct iov_iter *iter, struct file *file = iocb->ki_filp; struct inode *inode = file->f_mapping->host; - return __blockdev_direct_IO(rw, iocb, inode, I_BDEV(inode), iter, - offset, blkdev_get_block, - NULL, NULL, 0); + return __blockdev_direct_IO(iocb, inode, I_BDEV(inode), iter, offset, + blkdev_get_block, NULL, NULL, 0); } int __sync_blockdev(struct block_device *bdev, int wait) diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 686331f22b15..e9a3ff8a85fd 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -8174,10 +8174,10 @@ static ssize_t btrfs_direct_IO(int rw, struct kiocb *iocb, wakeup = false; } - ret = __blockdev_direct_IO(rw, iocb, inode, - BTRFS_I(inode)->root->fs_info->fs_devices->latest_bdev, - iter, offset, btrfs_get_blocks_direct, NULL, - btrfs_submit_direct, flags); + ret = __blockdev_direct_IO(iocb, inode, + BTRFS_I(inode)->root->fs_info->fs_devices->latest_bdev, + iter, offset, btrfs_get_blocks_direct, NULL, + btrfs_submit_direct, flags); if (rw & WRITE) { current->journal_info = NULL; if (ret < 0 && ret != -EIOCBQUEUED) diff --git a/fs/direct-io.c b/fs/direct-io.c index 6fb00e3f1059..c3b560b24a46 100644 --- a/fs/direct-io.c +++ b/fs/direct-io.c @@ -1093,10 +1093,10 @@ static inline int drop_refcount(struct dio *dio) * for the whole file. */ static inline ssize_t -do_blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode, - struct block_device *bdev, struct iov_iter *iter, loff_t offset, - get_block_t get_block, dio_iodone_t end_io, - dio_submit_t submit_io, int flags) +do_blockdev_direct_IO(struct kiocb *iocb, struct inode *inode, + struct block_device *bdev, struct iov_iter *iter, + loff_t offset, get_block_t get_block, dio_iodone_t end_io, + dio_submit_t submit_io, int flags) { unsigned i_blkbits = ACCESS_ONCE(inode->i_blkbits); unsigned blkbits = i_blkbits; @@ -1110,9 +1110,6 @@ do_blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode, struct blk_plug plug; unsigned long align = offset | iov_iter_alignment(iter); - if (rw & WRITE) - rw = WRITE_ODIRECT; - /* * Avoid references to bdev if not absolutely needed to give * the early prefetch in the caller enough time. @@ -1127,7 +1124,7 @@ do_blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode, } /* watch out for a 0 len io from a tricksy fs */ - if (rw == READ && !iov_iter_count(iter)) + if (iov_iter_rw(iter) == READ && !iov_iter_count(iter)) return 0; dio = kmem_cache_alloc(dio_cache, GFP_KERNEL); @@ -1143,7 +1140,7 @@ do_blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode, dio->flags = flags; if (dio->flags & DIO_LOCKING) { - if (rw == READ) { + if (iov_iter_rw(iter) == READ) { struct address_space *mapping = iocb->ki_filp->f_mapping; @@ -1169,19 +1166,19 @@ do_blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode, if (is_sync_kiocb(iocb)) dio->is_async = false; else if (!(dio->flags & DIO_ASYNC_EXTEND) && - (rw & WRITE) && end > i_size_read(inode)) + iov_iter_rw(iter) == WRITE && end > i_size_read(inode)) dio->is_async = false; else dio->is_async = true; dio->inode = inode; - dio->rw = rw; + dio->rw = iov_iter_rw(iter) == WRITE ? WRITE_ODIRECT : READ; /* * For AIO O_(D)SYNC writes we need to defer completions to a workqueue * so that we can call ->fsync. */ - if (dio->is_async && (rw & WRITE) && + if (dio->is_async && iov_iter_rw(iter) == WRITE && ((iocb->ki_filp->f_flags & O_DSYNC) || IS_SYNC(iocb->ki_filp->f_mapping->host))) { retval = dio_set_defer_completion(dio); @@ -1274,7 +1271,7 @@ do_blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode, * we can let i_mutex go now that its achieved its purpose * of protecting us from looking up uninitialized blocks. */ - if (rw == READ && (dio->flags & DIO_LOCKING)) + if (iov_iter_rw(iter) == READ && (dio->flags & DIO_LOCKING)) mutex_unlock(&dio->inode->i_mutex); /* @@ -1286,7 +1283,7 @@ do_blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode, */ BUG_ON(retval == -EIOCBQUEUED); if (dio->is_async && retval == 0 && dio->result && - (rw == READ || dio->result == count)) + (iov_iter_rw(iter) == READ || dio->result == count)) retval = -EIOCBQUEUED; else dio_await_completion(dio); @@ -1300,11 +1297,11 @@ out: return retval; } -ssize_t -__blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode, - struct block_device *bdev, struct iov_iter *iter, loff_t offset, - get_block_t get_block, dio_iodone_t end_io, - dio_submit_t submit_io, int flags) +ssize_t __blockdev_direct_IO(struct kiocb *iocb, struct inode *inode, + struct block_device *bdev, struct iov_iter *iter, + loff_t offset, get_block_t get_block, + dio_iodone_t end_io, dio_submit_t submit_io, + int flags) { /* * The block device state is needed in the end to finally @@ -1318,8 +1315,8 @@ __blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode, prefetch(bdev->bd_queue); prefetch((char *)bdev->bd_queue + SMP_CACHE_BYTES); - return do_blockdev_direct_IO(rw, iocb, inode, bdev, iter, offset, - get_block, end_io, submit_io, flags); + return do_blockdev_direct_IO(iocb, inode, bdev, iter, offset, get_block, + end_io, submit_io, flags); } EXPORT_SYMBOL(__blockdev_direct_IO); diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c index df9d6afbc5d5..3cbeb1b63acf 100644 --- a/fs/ext2/inode.c +++ b/fs/ext2/inode.c @@ -864,7 +864,7 @@ ext2_direct_IO(int rw, struct kiocb *iocb, struct iov_iter *iter, ret = dax_do_io(rw, iocb, inode, iter, offset, ext2_get_block, NULL, DIO_LOCKING); else - ret = blockdev_direct_IO(rw, iocb, inode, iter, offset, + ret = blockdev_direct_IO(iocb, inode, iter, offset, ext2_get_block); if (ret < 0 && (rw & WRITE)) ext2_write_failed(mapping, offset + count); diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c index db07ffbe7c85..6fb376c8d938 100644 --- a/fs/ext3/inode.c +++ b/fs/ext3/inode.c @@ -1856,7 +1856,7 @@ static ssize_t ext3_direct_IO(int rw, struct kiocb *iocb, } retry: - ret = blockdev_direct_IO(rw, iocb, inode, iter, offset, ext3_get_block); + ret = blockdev_direct_IO(iocb, inode, iter, offset, ext3_get_block); /* * In case of error extending write may have instantiated a few * blocks outside i_size. Trim these off again. diff --git a/fs/ext4/indirect.c b/fs/ext4/indirect.c index 740c7871c117..ae4ffc27abc6 100644 --- a/fs/ext4/indirect.c +++ b/fs/ext4/indirect.c @@ -693,9 +693,10 @@ retry: ret = dax_do_io(rw, iocb, inode, iter, offset, ext4_get_block, NULL, 0); else - ret = __blockdev_direct_IO(rw, iocb, inode, - inode->i_sb->s_bdev, iter, offset, - ext4_get_block, NULL, NULL, 0); + ret = __blockdev_direct_IO(iocb, inode, + inode->i_sb->s_bdev, iter, + offset, ext4_get_block, NULL, + NULL, 0); inode_dio_done(inode); } else { locked: @@ -703,8 +704,8 @@ locked: ret = dax_do_io(rw, iocb, inode, iter, offset, ext4_get_block, NULL, DIO_LOCKING); else - ret = blockdev_direct_IO(rw, iocb, inode, iter, - offset, ext4_get_block); + ret = blockdev_direct_IO(iocb, inode, iter, offset, + ext4_get_block); if (unlikely((rw & WRITE) && ret < 0)) { loff_t isize = i_size_read(inode); diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index a3f451370bef..ec049c04b197 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -3037,7 +3037,7 @@ static ssize_t ext4_ext_direct_IO(int rw, struct kiocb *iocb, ret = dax_do_io(rw, iocb, inode, iter, offset, get_block_func, ext4_end_io_dio, dio_flags); else - ret = __blockdev_direct_IO(rw, iocb, inode, + ret = __blockdev_direct_IO(iocb, inode, inode->i_sb->s_bdev, iter, offset, get_block_func, ext4_end_io_dio, NULL, dio_flags); diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 497f8515d205..e16adebcb9b6 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -1159,7 +1159,7 @@ static ssize_t f2fs_direct_IO(int rw, struct kiocb *iocb, if (rw & WRITE) __allocate_data_blocks(inode, offset, count); - err = blockdev_direct_IO(rw, iocb, inode, iter, offset, get_data_block); + err = blockdev_direct_IO(iocb, inode, iter, offset, get_data_block); if (err < 0 && (rw & WRITE)) f2fs_write_failed(mapping, offset + count); diff --git a/fs/fat/inode.c b/fs/fat/inode.c index 8521207de229..a1a39f571e78 100644 --- a/fs/fat/inode.c +++ b/fs/fat/inode.c @@ -274,7 +274,7 @@ static ssize_t fat_direct_IO(int rw, struct kiocb *iocb, * FAT need to use the DIO_LOCKING for avoiding the race * condition of fat_get_block() and ->truncate(). */ - ret = blockdev_direct_IO(rw, iocb, inode, iter, offset, fat_get_block); + ret = blockdev_direct_IO(iocb, inode, iter, offset, fat_get_block); if (ret < 0 && (rw & WRITE)) fat_write_failed(mapping, offset + count); diff --git a/fs/gfs2/aops.c b/fs/gfs2/aops.c index fe6634d25d1d..59983a18cab4 100644 --- a/fs/gfs2/aops.c +++ b/fs/gfs2/aops.c @@ -1095,9 +1095,8 @@ static ssize_t gfs2_direct_IO(int rw, struct kiocb *iocb, truncate_inode_pages_range(mapping, lstart, end); } - rv = __blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, - iter, offset, - gfs2_get_block_direct, NULL, NULL, 0); + rv = __blockdev_direct_IO(iocb, inode, inode->i_sb->s_bdev, iter, + offset, gfs2_get_block_direct, NULL, NULL, 0); out: gfs2_glock_dq(&gh); gfs2_holder_uninit(&gh); diff --git a/fs/hfs/inode.c b/fs/hfs/inode.c index 9337065bcc67..e92d175d1fd7 100644 --- a/fs/hfs/inode.c +++ b/fs/hfs/inode.c @@ -133,7 +133,7 @@ static ssize_t hfs_direct_IO(int rw, struct kiocb *iocb, size_t count = iov_iter_count(iter); ssize_t ret; - ret = blockdev_direct_IO(rw, iocb, inode, iter, offset, hfs_get_block); + ret = blockdev_direct_IO(iocb, inode, iter, offset, hfs_get_block); /* * In case of error extending write may have instantiated a few diff --git a/fs/hfsplus/inode.c b/fs/hfsplus/inode.c index 5f86cadb0542..2a98dc07c22c 100644 --- a/fs/hfsplus/inode.c +++ b/fs/hfsplus/inode.c @@ -131,8 +131,7 @@ static ssize_t hfsplus_direct_IO(int rw, struct kiocb *iocb, size_t count = iov_iter_count(iter); ssize_t ret; - ret = blockdev_direct_IO(rw, iocb, inode, iter, offset, - hfsplus_get_block); + ret = blockdev_direct_IO(iocb, inode, iter, offset, hfsplus_get_block); /* * In case of error extending write may have instantiated a few diff --git a/fs/jfs/inode.c b/fs/jfs/inode.c index 3197aed10614..c20f7883543f 100644 --- a/fs/jfs/inode.c +++ b/fs/jfs/inode.c @@ -339,7 +339,7 @@ static ssize_t jfs_direct_IO(int rw, struct kiocb *iocb, size_t count = iov_iter_count(iter); ssize_t ret; - ret = blockdev_direct_IO(rw, iocb, inode, iter, offset, jfs_get_block); + ret = blockdev_direct_IO(iocb, inode, iter, offset, jfs_get_block); /* * In case of error extending write may have instantiated a few diff --git a/fs/nilfs2/inode.c b/fs/nilfs2/inode.c index ab4987bc637f..3727b8caa46e 100644 --- a/fs/nilfs2/inode.c +++ b/fs/nilfs2/inode.c @@ -318,8 +318,7 @@ nilfs_direct_IO(int rw, struct kiocb *iocb, struct iov_iter *iter, return 0; /* Needs synchronization with the cleaner */ - size = blockdev_direct_IO(rw, iocb, inode, iter, offset, - nilfs_get_block); + size = blockdev_direct_IO(iocb, inode, iter, offset, nilfs_get_block); /* * In case of error extending write may have instantiated a few diff --git a/fs/ocfs2/aops.c b/fs/ocfs2/aops.c index e1bf18c5d25e..68cb199fb2b6 100644 --- a/fs/ocfs2/aops.c +++ b/fs/ocfs2/aops.c @@ -738,10 +738,9 @@ static ssize_t ocfs2_direct_IO_write(struct kiocb *iocb, di_bh = NULL; } - written = __blockdev_direct_IO(WRITE, iocb, inode, inode->i_sb->s_bdev, - iter, offset, - ocfs2_direct_IO_get_blocks, - ocfs2_dio_end_io, NULL, 0); + written = __blockdev_direct_IO(iocb, inode, inode->i_sb->s_bdev, iter, + offset, ocfs2_direct_IO_get_blocks, + ocfs2_dio_end_io, NULL, 0); if (unlikely(written < 0)) { loff_t i_size = i_size_read(inode); @@ -844,11 +843,10 @@ static ssize_t ocfs2_direct_IO(int rw, return 0; if (rw == READ) - return __blockdev_direct_IO(rw, iocb, inode, - inode->i_sb->s_bdev, - iter, offset, - ocfs2_direct_IO_get_blocks, - ocfs2_dio_end_io, NULL, 0); + return __blockdev_direct_IO(iocb, inode, inode->i_sb->s_bdev, + iter, offset, + ocfs2_direct_IO_get_blocks, + ocfs2_dio_end_io, NULL, 0); else return ocfs2_direct_IO_write(iocb, iter, offset); } diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c index 9312b7842e03..a51e9177b056 100644 --- a/fs/reiserfs/inode.c +++ b/fs/reiserfs/inode.c @@ -3286,7 +3286,7 @@ static ssize_t reiserfs_direct_IO(int rw, struct kiocb *iocb, size_t count = iov_iter_count(iter); ssize_t ret; - ret = blockdev_direct_IO(rw, iocb, inode, iter, offset, + ret = blockdev_direct_IO(iocb, inode, iter, offset, reiserfs_get_blocks_direct_io); /* diff --git a/fs/udf/inode.c b/fs/udf/inode.c index 9c1fbd23913d..3adf49c01c19 100644 --- a/fs/udf/inode.c +++ b/fs/udf/inode.c @@ -225,7 +225,7 @@ static ssize_t udf_direct_IO(int rw, struct kiocb *iocb, size_t count = iov_iter_count(iter); ssize_t ret; - ret = blockdev_direct_IO(rw, iocb, inode, iter, offset, udf_get_block); + ret = blockdev_direct_IO(iocb, inode, iter, offset, udf_get_block); if (unlikely(ret < 0 && (rw & WRITE))) udf_write_failed(mapping, offset + count); return ret; diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c index 4f8cdc59bc38..5ca504c66e85 100644 --- a/fs/xfs/xfs_aops.c +++ b/fs/xfs/xfs_aops.c @@ -1504,14 +1504,13 @@ xfs_vm_direct_IO( struct block_device *bdev = xfs_find_bdev_for_inode(inode); if (rw & WRITE) { - return __blockdev_direct_IO(rw, iocb, inode, bdev, iter, - offset, xfs_get_blocks_direct, + return __blockdev_direct_IO(iocb, inode, bdev, iter, offset, + xfs_get_blocks_direct, xfs_end_io_direct_write, NULL, DIO_ASYNC_EXTEND); } - return __blockdev_direct_IO(rw, iocb, inode, bdev, iter, - offset, xfs_get_blocks_direct, - NULL, NULL, 0); + return __blockdev_direct_IO(iocb, inode, bdev, iter, offset, + xfs_get_blocks_direct, NULL, NULL, 0); } /* diff --git a/include/linux/fs.h b/include/linux/fs.h index f1e3f65255a8..c67b6de8be33 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2634,16 +2634,18 @@ enum { void dio_end_io(struct bio *bio, int error); -ssize_t __blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode, - struct block_device *bdev, struct iov_iter *iter, loff_t offset, - get_block_t get_block, dio_iodone_t end_io, - dio_submit_t submit_io, int flags); - -static inline ssize_t blockdev_direct_IO(int rw, struct kiocb *iocb, - struct inode *inode, struct iov_iter *iter, loff_t offset, - get_block_t get_block) -{ - return __blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iter, +ssize_t __blockdev_direct_IO(struct kiocb *iocb, struct inode *inode, + struct block_device *bdev, struct iov_iter *iter, + loff_t offset, get_block_t get_block, + dio_iodone_t end_io, dio_submit_t submit_io, + int flags); + +static inline ssize_t blockdev_direct_IO(struct kiocb *iocb, + struct inode *inode, + struct iov_iter *iter, loff_t offset, + get_block_t get_block) +{ + return __blockdev_direct_IO(iocb, inode, inode->i_sb->s_bdev, iter, offset, get_block, NULL, NULL, DIO_LOCKING | DIO_SKIP_HOLES); } -- cgit v1.3-14-g43fede From a95cd6311512bd954e88684eb39373f7f4b0a984 Mon Sep 17 00:00:00 2001 From: Omar Sandoval Date: Mon, 16 Mar 2015 04:33:51 -0700 Subject: Remove rw from dax_{do_,}io() And use iov_iter_rw() instead. Signed-off-by: Omar Sandoval Signed-off-by: Al Viro --- fs/dax.c | 27 +++++++++++++-------------- fs/ext2/inode.c | 4 ++-- fs/ext4/indirect.c | 4 ++-- fs/ext4/inode.c | 2 +- include/linux/fs.h | 4 ++-- 5 files changed, 20 insertions(+), 21 deletions(-) (limited to 'include/linux/fs.h') diff --git a/fs/dax.c b/fs/dax.c index ed1619ec6537..a27846946525 100644 --- a/fs/dax.c +++ b/fs/dax.c @@ -98,9 +98,9 @@ static bool buffer_size_valid(struct buffer_head *bh) return bh->b_state != 0; } -static ssize_t dax_io(int rw, struct inode *inode, struct iov_iter *iter, - loff_t start, loff_t end, get_block_t get_block, - struct buffer_head *bh) +static ssize_t dax_io(struct inode *inode, struct iov_iter *iter, + loff_t start, loff_t end, get_block_t get_block, + struct buffer_head *bh) { ssize_t retval = 0; loff_t pos = start; @@ -109,7 +109,7 @@ static ssize_t dax_io(int rw, struct inode *inode, struct iov_iter *iter, void *addr; bool hole = false; - if (rw != WRITE) + if (iov_iter_rw(iter) != WRITE) end = min(end, i_size_read(inode)); while (pos < end) { @@ -124,7 +124,7 @@ static ssize_t dax_io(int rw, struct inode *inode, struct iov_iter *iter, bh->b_size = PAGE_ALIGN(end - pos); bh->b_state = 0; retval = get_block(inode, block, bh, - rw == WRITE); + iov_iter_rw(iter) == WRITE); if (retval) break; if (!buffer_size_valid(bh)) @@ -137,7 +137,7 @@ static ssize_t dax_io(int rw, struct inode *inode, struct iov_iter *iter, bh->b_size -= done; } - hole = (rw != WRITE) && !buffer_written(bh); + hole = iov_iter_rw(iter) != WRITE && !buffer_written(bh); if (hole) { addr = NULL; size = bh->b_size - first; @@ -154,7 +154,7 @@ static ssize_t dax_io(int rw, struct inode *inode, struct iov_iter *iter, max = min(pos + size, end); } - if (rw == WRITE) + if (iov_iter_rw(iter) == WRITE) len = copy_from_iter(addr, max - pos, iter); else if (!hole) len = copy_to_iter(addr, max - pos, iter); @@ -173,7 +173,6 @@ static ssize_t dax_io(int rw, struct inode *inode, struct iov_iter *iter, /** * dax_do_io - Perform I/O to a DAX file - * @rw: READ to read or WRITE to write * @iocb: The control block for this I/O * @inode: The file which the I/O is directed at * @iter: The addresses to do I/O from or to @@ -189,9 +188,9 @@ static ssize_t dax_io(int rw, struct inode *inode, struct iov_iter *iter, * As with do_blockdev_direct_IO(), we increment i_dio_count while the I/O * is in progress. */ -ssize_t dax_do_io(int rw, struct kiocb *iocb, struct inode *inode, - struct iov_iter *iter, loff_t pos, - get_block_t get_block, dio_iodone_t end_io, int flags) +ssize_t dax_do_io(struct kiocb *iocb, struct inode *inode, + struct iov_iter *iter, loff_t pos, get_block_t get_block, + dio_iodone_t end_io, int flags) { struct buffer_head bh; ssize_t retval = -EINVAL; @@ -199,7 +198,7 @@ ssize_t dax_do_io(int rw, struct kiocb *iocb, struct inode *inode, memset(&bh, 0, sizeof(bh)); - if ((flags & DIO_LOCKING) && (rw == READ)) { + if ((flags & DIO_LOCKING) && iov_iter_rw(iter) == READ) { struct address_space *mapping = inode->i_mapping; mutex_lock(&inode->i_mutex); retval = filemap_write_and_wait_range(mapping, pos, end - 1); @@ -212,9 +211,9 @@ ssize_t dax_do_io(int rw, struct kiocb *iocb, struct inode *inode, /* Protects against truncate */ atomic_inc(&inode->i_dio_count); - retval = dax_io(rw, inode, iter, pos, end, get_block, &bh); + retval = dax_io(inode, iter, pos, end, get_block, &bh); - if ((flags & DIO_LOCKING) && (rw == READ)) + if ((flags & DIO_LOCKING) && iov_iter_rw(iter) == READ) mutex_unlock(&inode->i_mutex); if ((retval > 0) && end_io) diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c index 3cbeb1b63acf..14e8d1752685 100644 --- a/fs/ext2/inode.c +++ b/fs/ext2/inode.c @@ -861,8 +861,8 @@ ext2_direct_IO(int rw, struct kiocb *iocb, struct iov_iter *iter, ssize_t ret; if (IS_DAX(inode)) - ret = dax_do_io(rw, iocb, inode, iter, offset, ext2_get_block, - NULL, DIO_LOCKING); + ret = dax_do_io(iocb, inode, iter, offset, ext2_get_block, NULL, + DIO_LOCKING); else ret = blockdev_direct_IO(iocb, inode, iter, offset, ext2_get_block); diff --git a/fs/ext4/indirect.c b/fs/ext4/indirect.c index ae4ffc27abc6..cd81d01da0b0 100644 --- a/fs/ext4/indirect.c +++ b/fs/ext4/indirect.c @@ -690,7 +690,7 @@ retry: goto locked; } if (IS_DAX(inode)) - ret = dax_do_io(rw, iocb, inode, iter, offset, + ret = dax_do_io(iocb, inode, iter, offset, ext4_get_block, NULL, 0); else ret = __blockdev_direct_IO(iocb, inode, @@ -701,7 +701,7 @@ retry: } else { locked: if (IS_DAX(inode)) - ret = dax_do_io(rw, iocb, inode, iter, offset, + ret = dax_do_io(iocb, inode, iter, offset, ext4_get_block, NULL, DIO_LOCKING); else ret = blockdev_direct_IO(iocb, inode, iter, offset, diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index ec049c04b197..76b8cba5d041 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -3034,7 +3034,7 @@ static ssize_t ext4_ext_direct_IO(int rw, struct kiocb *iocb, dio_flags = DIO_LOCKING; } if (IS_DAX(inode)) - ret = dax_do_io(rw, iocb, inode, iter, offset, get_block_func, + ret = dax_do_io(iocb, inode, iter, offset, get_block_func, ext4_end_io_dio, dio_flags); else ret = __blockdev_direct_IO(iocb, inode, diff --git a/include/linux/fs.h b/include/linux/fs.h index c67b6de8be33..295bc589fe1b 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2609,8 +2609,8 @@ extern loff_t fixed_size_llseek(struct file *file, loff_t offset, extern int generic_file_open(struct inode * inode, struct file * filp); extern int nonseekable_open(struct inode * inode, struct file * filp); -ssize_t dax_do_io(int rw, struct kiocb *, struct inode *, struct iov_iter *, - loff_t, get_block_t, dio_iodone_t, int flags); +ssize_t dax_do_io(struct kiocb *, struct inode *, struct iov_iter *, loff_t, + get_block_t, dio_iodone_t, int flags); int dax_clear_blocks(struct inode *, sector_t block, long size); int dax_zero_page_range(struct inode *, loff_t from, unsigned len, get_block_t); int dax_truncate_page(struct inode *, loff_t from, get_block_t); -- cgit v1.3-14-g43fede From 22c6186ecea0be9eff1c399298ad36e94a59995f Mon Sep 17 00:00:00 2001 From: Omar Sandoval Date: Mon, 16 Mar 2015 04:33:53 -0700 Subject: direct_IO: remove rw from a_ops->direct_IO() Now that no one is using rw, remove it completely. Signed-off-by: Omar Sandoval Signed-off-by: Al Viro --- Documentation/filesystems/Locking | 2 +- Documentation/filesystems/vfs.txt | 2 +- drivers/staging/lustre/lustre/llite/rw26.c | 4 ++-- fs/9p/vfs_addr.c | 3 +-- fs/affs/file.c | 3 +-- fs/block_dev.c | 3 +-- fs/btrfs/inode.c | 4 ++-- fs/ceph/addr.c | 3 +-- fs/cifs/file.c | 3 +-- fs/exofs/inode.c | 4 ++-- fs/ext2/inode.c | 3 +-- fs/ext3/inode.c | 4 ++-- fs/ext4/inode.c | 4 ++-- fs/f2fs/data.c | 4 ++-- fs/fat/inode.c | 3 +-- fs/fuse/file.c | 3 +-- fs/gfs2/aops.c | 4 ++-- fs/hfs/inode.c | 4 ++-- fs/hfsplus/inode.c | 4 ++-- fs/jfs/inode.c | 4 ++-- fs/nfs/direct.c | 3 +-- fs/nilfs2/inode.c | 3 +-- fs/ocfs2/aops.c | 4 +--- fs/reiserfs/inode.c | 4 ++-- fs/udf/file.c | 3 +-- fs/udf/inode.c | 3 +-- fs/xfs/xfs_aops.c | 1 - include/linux/fs.h | 2 +- include/linux/nfs_fs.h | 2 +- mm/filemap.c | 4 ++-- mm/page_io.c | 4 +--- 31 files changed, 42 insertions(+), 59 deletions(-) (limited to 'include/linux/fs.h') diff --git a/Documentation/filesystems/Locking b/Documentation/filesystems/Locking index c3cd6279e92e..7cdbca44e343 100644 --- a/Documentation/filesystems/Locking +++ b/Documentation/filesystems/Locking @@ -196,7 +196,7 @@ prototypes: void (*invalidatepage) (struct page *, unsigned int, unsigned int); int (*releasepage) (struct page *, int); void (*freepage)(struct page *); - int (*direct_IO)(int, struct kiocb *, struct iov_iter *iter, loff_t offset); + int (*direct_IO)(struct kiocb *, struct iov_iter *iter, loff_t offset); int (*migratepage)(struct address_space *, struct page *, struct page *); int (*launder_page)(struct page *); int (*is_partially_uptodate)(struct page *, unsigned long, unsigned long); diff --git a/Documentation/filesystems/vfs.txt b/Documentation/filesystems/vfs.txt index 207cdca68bed..5d833b32bbcd 100644 --- a/Documentation/filesystems/vfs.txt +++ b/Documentation/filesystems/vfs.txt @@ -590,7 +590,7 @@ struct address_space_operations { void (*invalidatepage) (struct page *, unsigned int, unsigned int); int (*releasepage) (struct page *, int); void (*freepage)(struct page *); - ssize_t (*direct_IO)(int, struct kiocb *, struct iov_iter *iter, loff_t offset); + ssize_t (*direct_IO)(struct kiocb *, struct iov_iter *iter, loff_t offset); /* migrate the contents of a page to the specified target */ int (*migratepage) (struct page *, struct page *); int (*launder_page) (struct page *); diff --git a/drivers/staging/lustre/lustre/llite/rw26.c b/drivers/staging/lustre/lustre/llite/rw26.c index 3aa9de6bcc40..0d7ce6b0e23c 100644 --- a/drivers/staging/lustre/lustre/llite/rw26.c +++ b/drivers/staging/lustre/lustre/llite/rw26.c @@ -359,8 +359,8 @@ static ssize_t ll_direct_IO_26_seg(const struct lu_env *env, struct cl_io *io, * up to 22MB for 128kB kmalloc and up to 682MB for 4MB kmalloc. */ #define MAX_DIO_SIZE ((MAX_MALLOC / sizeof(struct brw_page) * PAGE_CACHE_SIZE) & \ ~(DT_MAX_BRW_SIZE - 1)) -static ssize_t ll_direct_IO_26(int rw, struct kiocb *iocb, - struct iov_iter *iter, loff_t file_offset) +static ssize_t ll_direct_IO_26(struct kiocb *iocb, struct iov_iter *iter, + loff_t file_offset) { struct lu_env *env; struct cl_io *io; diff --git a/fs/9p/vfs_addr.c b/fs/9p/vfs_addr.c index dd5543b1d183..be35d05a4d0e 100644 --- a/fs/9p/vfs_addr.c +++ b/fs/9p/vfs_addr.c @@ -230,7 +230,6 @@ static int v9fs_launder_page(struct page *page) /** * v9fs_direct_IO - 9P address space operation for direct I/O - * @rw: direction (read or write) * @iocb: target I/O control block * @iov: array of vectors that define I/O buffer * @pos: offset in file to begin the operation @@ -248,7 +247,7 @@ static int v9fs_launder_page(struct page *page) * */ static ssize_t -v9fs_direct_IO(int rw, struct kiocb *iocb, struct iov_iter *iter, loff_t pos) +v9fs_direct_IO(struct kiocb *iocb, struct iov_iter *iter, loff_t pos) { struct file *file = iocb->ki_filp; ssize_t n; diff --git a/fs/affs/file.c b/fs/affs/file.c index 7f05a468d594..dcf27951781c 100644 --- a/fs/affs/file.c +++ b/fs/affs/file.c @@ -389,8 +389,7 @@ static void affs_write_failed(struct address_space *mapping, loff_t to) } static ssize_t -affs_direct_IO(int rw, struct kiocb *iocb, struct iov_iter *iter, - loff_t offset) +affs_direct_IO(struct kiocb *iocb, struct iov_iter *iter, loff_t offset) { struct file *file = iocb->ki_filp; struct address_space *mapping = file->f_mapping; diff --git a/fs/block_dev.c b/fs/block_dev.c index bc23afd35fdb..6e3de63c3055 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -146,8 +146,7 @@ blkdev_get_block(struct inode *inode, sector_t iblock, } static ssize_t -blkdev_direct_IO(int rw, struct kiocb *iocb, struct iov_iter *iter, - loff_t offset) +blkdev_direct_IO(struct kiocb *iocb, struct iov_iter *iter, loff_t offset) { struct file *file = iocb->ki_filp; struct inode *inode = file->f_mapping->host; diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index ca69e83d4f3c..43192e10cc43 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -8114,8 +8114,8 @@ out: return retval; } -static ssize_t btrfs_direct_IO(int rw, struct kiocb *iocb, - struct iov_iter *iter, loff_t offset) +static ssize_t btrfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter, + loff_t offset) { struct file *file = iocb->ki_filp; struct inode *inode = file->f_mapping->host; diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c index fd5599d32362..155ab9c0246b 100644 --- a/fs/ceph/addr.c +++ b/fs/ceph/addr.c @@ -1198,8 +1198,7 @@ static int ceph_write_end(struct file *file, struct address_space *mapping, * intercept O_DIRECT reads and writes early, this function should * never get called. */ -static ssize_t ceph_direct_io(int rw, struct kiocb *iocb, - struct iov_iter *iter, +static ssize_t ceph_direct_io(struct kiocb *iocb, struct iov_iter *iter, loff_t pos) { WARN_ON(1); diff --git a/fs/cifs/file.c b/fs/cifs/file.c index ca30c391a894..72394c5abd0f 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -3877,8 +3877,7 @@ void cifs_oplock_break(struct work_struct *work) * Direct IO is not yet supported in the cached mode. */ static ssize_t -cifs_direct_io(int rw, struct kiocb *iocb, struct iov_iter *iter, - loff_t pos) +cifs_direct_io(struct kiocb *iocb, struct iov_iter *iter, loff_t pos) { /* * FIXME diff --git a/fs/exofs/inode.c b/fs/exofs/inode.c index a198e94813fe..35073aaec6e0 100644 --- a/fs/exofs/inode.c +++ b/fs/exofs/inode.c @@ -963,8 +963,8 @@ static void exofs_invalidatepage(struct page *page, unsigned int offset, /* TODO: Should be easy enough to do proprly */ -static ssize_t exofs_direct_IO(int rw, struct kiocb *iocb, - struct iov_iter *iter, loff_t offset) +static ssize_t exofs_direct_IO(struct kiocb *iocb, struct iov_iter *iter, + loff_t offset) { return 0; } diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c index 685e514c57dd..e1abf75e994c 100644 --- a/fs/ext2/inode.c +++ b/fs/ext2/inode.c @@ -851,8 +851,7 @@ static sector_t ext2_bmap(struct address_space *mapping, sector_t block) } static ssize_t -ext2_direct_IO(int rw, struct kiocb *iocb, struct iov_iter *iter, - loff_t offset) +ext2_direct_IO(struct kiocb *iocb, struct iov_iter *iter, loff_t offset) { struct file *file = iocb->ki_filp; struct address_space *mapping = file->f_mapping; diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c index c70839d26ccd..13c0868c7160 100644 --- a/fs/ext3/inode.c +++ b/fs/ext3/inode.c @@ -1820,8 +1820,8 @@ static int ext3_releasepage(struct page *page, gfp_t wait) * crashes then stale disk data _may_ be exposed inside the file. But current * VFS code falls back into buffered path in that case so we are safe. */ -static ssize_t ext3_direct_IO(int rw, struct kiocb *iocb, - struct iov_iter *iter, loff_t offset) +static ssize_t ext3_direct_IO(struct kiocb *iocb, struct iov_iter *iter, + loff_t offset) { struct file *file = iocb->ki_filp; struct inode *inode = file->f_mapping->host; diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index cf6ba6536035..42c942a950e1 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -3089,8 +3089,8 @@ retake_lock: return ret; } -static ssize_t ext4_direct_IO(int rw, struct kiocb *iocb, - struct iov_iter *iter, loff_t offset) +static ssize_t ext4_direct_IO(struct kiocb *iocb, struct iov_iter *iter, + loff_t offset) { struct file *file = iocb->ki_filp; struct inode *inode = file->f_mapping->host; diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index ce25f62edfa7..319eda511c4f 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -1135,8 +1135,8 @@ static int check_direct_IO(struct inode *inode, struct iov_iter *iter, return 0; } -static ssize_t f2fs_direct_IO(int rw, struct kiocb *iocb, - struct iov_iter *iter, loff_t offset) +static ssize_t f2fs_direct_IO(struct kiocb *iocb, struct iov_iter *iter, + loff_t offset) { struct file *file = iocb->ki_filp; struct address_space *mapping = file->f_mapping; diff --git a/fs/fat/inode.c b/fs/fat/inode.c index 342d791b28db..41b729933638 100644 --- a/fs/fat/inode.c +++ b/fs/fat/inode.c @@ -245,8 +245,7 @@ static int fat_write_end(struct file *file, struct address_space *mapping, return err; } -static ssize_t fat_direct_IO(int rw, struct kiocb *iocb, - struct iov_iter *iter, +static ssize_t fat_direct_IO(struct kiocb *iocb, struct iov_iter *iter, loff_t offset) { struct file *file = iocb->ki_filp; diff --git a/fs/fuse/file.c b/fs/fuse/file.c index c1a67da6a8a0..3d355e946991 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -2782,8 +2782,7 @@ static inline loff_t fuse_round_up(loff_t off) } static ssize_t -fuse_direct_IO(int rw, struct kiocb *iocb, struct iov_iter *iter, - loff_t offset) +fuse_direct_IO(struct kiocb *iocb, struct iov_iter *iter, loff_t offset) { DECLARE_COMPLETION_ONSTACK(wait); ssize_t ret = 0; diff --git a/fs/gfs2/aops.c b/fs/gfs2/aops.c index e22e6e686a11..20dd33da92de 100644 --- a/fs/gfs2/aops.c +++ b/fs/gfs2/aops.c @@ -1038,8 +1038,8 @@ static int gfs2_ok_for_dio(struct gfs2_inode *ip, loff_t offset) -static ssize_t gfs2_direct_IO(int rw, struct kiocb *iocb, - struct iov_iter *iter, loff_t offset) +static ssize_t gfs2_direct_IO(struct kiocb *iocb, struct iov_iter *iter, + loff_t offset) { struct file *file = iocb->ki_filp; struct inode *inode = file->f_mapping->host; diff --git a/fs/hfs/inode.c b/fs/hfs/inode.c index 0085d527a55c..75fd5d873c19 100644 --- a/fs/hfs/inode.c +++ b/fs/hfs/inode.c @@ -124,8 +124,8 @@ static int hfs_releasepage(struct page *page, gfp_t mask) return res ? try_to_free_buffers(page) : 0; } -static ssize_t hfs_direct_IO(int rw, struct kiocb *iocb, - struct iov_iter *iter, loff_t offset) +static ssize_t hfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter, + loff_t offset) { struct file *file = iocb->ki_filp; struct address_space *mapping = file->f_mapping; diff --git a/fs/hfsplus/inode.c b/fs/hfsplus/inode.c index afcde36b506b..a43811f90935 100644 --- a/fs/hfsplus/inode.c +++ b/fs/hfsplus/inode.c @@ -122,8 +122,8 @@ static int hfsplus_releasepage(struct page *page, gfp_t mask) return res ? try_to_free_buffers(page) : 0; } -static ssize_t hfsplus_direct_IO(int rw, struct kiocb *iocb, - struct iov_iter *iter, loff_t offset) +static ssize_t hfsplus_direct_IO(struct kiocb *iocb, struct iov_iter *iter, + loff_t offset) { struct file *file = iocb->ki_filp; struct address_space *mapping = file->f_mapping; diff --git a/fs/jfs/inode.c b/fs/jfs/inode.c index e7047b63ffc5..070dc4b33544 100644 --- a/fs/jfs/inode.c +++ b/fs/jfs/inode.c @@ -330,8 +330,8 @@ static sector_t jfs_bmap(struct address_space *mapping, sector_t block) return generic_block_bmap(mapping, block, jfs_get_block); } -static ssize_t jfs_direct_IO(int rw, struct kiocb *iocb, - struct iov_iter *iter, loff_t offset) +static ssize_t jfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter, + loff_t offset) { struct file *file = iocb->ki_filp; struct address_space *mapping = file->f_mapping; diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c index e8482b8f4830..06503bc604e1 100644 --- a/fs/nfs/direct.c +++ b/fs/nfs/direct.c @@ -240,7 +240,6 @@ static int nfs_direct_cmp_commit_data_verf(struct nfs_direct_req *dreq, /** * nfs_direct_IO - NFS address space operation for direct I/O - * @rw: direction (read or write) * @iocb: target I/O control block * @iov: array of vectors that define I/O buffer * @pos: offset in file to begin the operation @@ -251,7 +250,7 @@ static int nfs_direct_cmp_commit_data_verf(struct nfs_direct_req *dreq, * shunt off direct read and write requests before the VFS gets them, * so this method is only ever called for swap. */ -ssize_t nfs_direct_IO(int rw, struct kiocb *iocb, struct iov_iter *iter, loff_t pos) +ssize_t nfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter, loff_t pos) { struct inode *inode = iocb->ki_filp->f_mapping->host; diff --git a/fs/nilfs2/inode.c b/fs/nilfs2/inode.c index 4726f1493d5d..36f057fa8aa3 100644 --- a/fs/nilfs2/inode.c +++ b/fs/nilfs2/inode.c @@ -305,8 +305,7 @@ static int nilfs_write_end(struct file *file, struct address_space *mapping, } static ssize_t -nilfs_direct_IO(int rw, struct kiocb *iocb, struct iov_iter *iter, - loff_t offset) +nilfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter, loff_t offset) { struct file *file = iocb->ki_filp; struct address_space *mapping = file->f_mapping; diff --git a/fs/ocfs2/aops.c b/fs/ocfs2/aops.c index 0ee9474cca46..28b5ad81bbec 100644 --- a/fs/ocfs2/aops.c +++ b/fs/ocfs2/aops.c @@ -818,9 +818,7 @@ out: return ret; } -static ssize_t ocfs2_direct_IO(int rw, - struct kiocb *iocb, - struct iov_iter *iter, +static ssize_t ocfs2_direct_IO(struct kiocb *iocb, struct iov_iter *iter, loff_t offset) { struct file *file = iocb->ki_filp; diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c index d61ab13244a8..742242b60972 100644 --- a/fs/reiserfs/inode.c +++ b/fs/reiserfs/inode.c @@ -3278,8 +3278,8 @@ static int reiserfs_releasepage(struct page *page, gfp_t unused_gfp_flags) * We thank Mingming Cao for helping us understand in great detail what * to do in this section of the code. */ -static ssize_t reiserfs_direct_IO(int rw, struct kiocb *iocb, - struct iov_iter *iter, loff_t offset) +static ssize_t reiserfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter, + loff_t offset) { struct file *file = iocb->ki_filp; struct inode *inode = file->f_mapping->host; diff --git a/fs/udf/file.c b/fs/udf/file.c index 74050bff64f4..78d42548b260 100644 --- a/fs/udf/file.c +++ b/fs/udf/file.c @@ -100,8 +100,7 @@ static int udf_adinicb_write_begin(struct file *file, return 0; } -static ssize_t udf_adinicb_direct_IO(int rw, struct kiocb *iocb, - struct iov_iter *iter, +static ssize_t udf_adinicb_direct_IO(struct kiocb *iocb, struct iov_iter *iter, loff_t offset) { /* Fallback to buffered I/O. */ diff --git a/fs/udf/inode.c b/fs/udf/inode.c index a685aea93068..4f178c83b04f 100644 --- a/fs/udf/inode.c +++ b/fs/udf/inode.c @@ -215,8 +215,7 @@ static int udf_write_begin(struct file *file, struct address_space *mapping, return ret; } -static ssize_t udf_direct_IO(int rw, struct kiocb *iocb, - struct iov_iter *iter, +static ssize_t udf_direct_IO(struct kiocb *iocb, struct iov_iter *iter, loff_t offset) { struct file *file = iocb->ki_filp; diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c index 532d5279df2f..1d8eef9cf0f5 100644 --- a/fs/xfs/xfs_aops.c +++ b/fs/xfs/xfs_aops.c @@ -1495,7 +1495,6 @@ xfs_end_io_direct_write( STATIC ssize_t xfs_vm_direct_IO( - int rw, struct kiocb *iocb, struct iov_iter *iter, loff_t offset) diff --git a/include/linux/fs.h b/include/linux/fs.h index 295bc589fe1b..72e3759de8c3 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -383,7 +383,7 @@ struct address_space_operations { void (*invalidatepage) (struct page *, unsigned int, unsigned int); int (*releasepage) (struct page *, gfp_t); void (*freepage)(struct page *); - ssize_t (*direct_IO)(int, struct kiocb *, struct iov_iter *iter, loff_t offset); + ssize_t (*direct_IO)(struct kiocb *, struct iov_iter *iter, loff_t offset); /* * migrate the contents of a page to the specified target. If * migrate_mode is MIGRATE_ASYNC, it must not block. diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h index b01ccf371fdc..3d1b0d2fe55e 100644 --- a/include/linux/nfs_fs.h +++ b/include/linux/nfs_fs.h @@ -447,7 +447,7 @@ static inline struct rpc_cred *nfs_file_cred(struct file *file) /* * linux/fs/nfs/direct.c */ -extern ssize_t nfs_direct_IO(int, struct kiocb *, struct iov_iter *, loff_t); +extern ssize_t nfs_direct_IO(struct kiocb *, struct iov_iter *, loff_t); extern ssize_t nfs_file_direct_read(struct kiocb *iocb, struct iov_iter *iter, loff_t pos); diff --git a/mm/filemap.c b/mm/filemap.c index 876f4e6f3ed6..9920db455f05 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -1707,7 +1707,7 @@ generic_file_read_iter(struct kiocb *iocb, struct iov_iter *iter) pos + count - 1); if (!retval) { struct iov_iter data = *iter; - retval = mapping->a_ops->direct_IO(READ, iocb, &data, pos); + retval = mapping->a_ops->direct_IO(iocb, &data, pos); } if (retval > 0) { @@ -2395,7 +2395,7 @@ generic_file_direct_write(struct kiocb *iocb, struct iov_iter *from, loff_t pos) } data = *from; - written = mapping->a_ops->direct_IO(WRITE, iocb, &data, pos); + written = mapping->a_ops->direct_IO(iocb, &data, pos); /* * Finally, try again to invalidate clean pages which might have been diff --git a/mm/page_io.c b/mm/page_io.c index a96c8562d835..6424869e275e 100644 --- a/mm/page_io.c +++ b/mm/page_io.c @@ -277,9 +277,7 @@ int __swap_writepage(struct page *page, struct writeback_control *wbc, set_page_writeback(page); unlock_page(page); - ret = mapping->a_ops->direct_IO(ITER_BVEC | WRITE, - &kiocb, &from, - kiocb.ki_pos); + ret = mapping->a_ops->direct_IO(&kiocb, &from, kiocb.ki_pos); if (ret == PAGE_SIZE) { count_vm_event(PSWPOUT); ret = 0; -- cgit v1.3-14-g43fede From 0fa6b005afdb3152ce85df963302e59b61115f9b Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sat, 4 Apr 2015 04:05:48 -0400 Subject: generic_write_checks(): drop isblk argument all remaining callers are passing 0; some just obscure that fact. Signed-off-by: Al Viro --- fs/9p/vfs_file.c | 2 +- fs/btrfs/file.c | 2 +- fs/ceph/file.c | 2 +- fs/cifs/file.c | 4 ++-- fs/ext4/file.c | 2 +- fs/fuse/file.c | 6 +++--- fs/ncpfs/file.c | 2 +- fs/nfs/direct.c | 2 +- fs/ntfs/file.c | 2 +- fs/ocfs2/file.c | 3 +-- fs/udf/file.c | 2 +- fs/xfs/xfs_file.c | 2 +- include/linux/fs.h | 2 +- mm/filemap.c | 63 +++++++++++++++++------------------------------------- 14 files changed, 36 insertions(+), 60 deletions(-) (limited to 'include/linux/fs.h') diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c index d7fcb775311e..b5b020ace1b3 100644 --- a/fs/9p/vfs_file.c +++ b/fs/9p/vfs_file.c @@ -409,7 +409,7 @@ v9fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from) size_t count = iov_iter_count(from); int err = 0; - retval = generic_write_checks(file, &origin, &count, 0); + retval = generic_write_checks(file, &origin, &count); if (retval) return retval; diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index cdc801c85105..691a84a81e09 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -1747,7 +1747,7 @@ static ssize_t btrfs_file_write_iter(struct kiocb *iocb, mutex_lock(&inode->i_mutex); current->backing_dev_info = inode_to_bdi(inode); - err = generic_write_checks(file, &pos, &count, S_ISBLK(inode->i_mode)); + err = generic_write_checks(file, &pos, &count); if (err) { mutex_unlock(&inode->i_mutex); goto out; diff --git a/fs/ceph/file.c b/fs/ceph/file.c index 56237ea5fc22..761841903160 100644 --- a/fs/ceph/file.c +++ b/fs/ceph/file.c @@ -953,7 +953,7 @@ static ssize_t ceph_write_iter(struct kiocb *iocb, struct iov_iter *from) /* We can write back this queue in page reclaim */ current->backing_dev_info = inode_to_bdi(inode); - err = generic_write_checks(file, &pos, &count, S_ISBLK(inode->i_mode)); + err = generic_write_checks(file, &pos, &count); if (err) goto out; diff --git a/fs/cifs/file.c b/fs/cifs/file.c index 3c5c9bc5cbaf..4202e74b2db5 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -2580,7 +2580,7 @@ ssize_t cifs_user_writev(struct kiocb *iocb, struct iov_iter *from) */ len = iov_iter_count(from); - rc = generic_write_checks(file, &iocb->ki_pos, &len, 0); + rc = generic_write_checks(file, &iocb->ki_pos, &len); if (rc) return rc; @@ -2684,7 +2684,7 @@ cifs_writev(struct kiocb *iocb, struct iov_iter *from) mutex_lock(&inode->i_mutex); count = iov_iter_count(from); - rc = generic_write_checks(file, &iocb->ki_pos, &count, 0); + rc = generic_write_checks(file, &iocb->ki_pos, &count); if (rc) goto out; diff --git a/fs/ext4/file.c b/fs/ext4/file.c index f7cca423dded..1f0afc181b7b 100644 --- a/fs/ext4/file.c +++ b/fs/ext4/file.c @@ -171,7 +171,7 @@ ext4_file_write_iter(struct kiocb *iocb, struct iov_iter *from) } } - ret = generic_write_checks(file, &iocb->ki_pos, &length, 0); + ret = generic_write_checks(file, &iocb->ki_pos, &length); if (ret) goto out; diff --git a/fs/fuse/file.c b/fs/fuse/file.c index 3d355e946991..4c04a8144a75 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -1167,7 +1167,7 @@ static ssize_t fuse_file_write_iter(struct kiocb *iocb, struct iov_iter *from) /* We can write back this queue in page reclaim */ current->backing_dev_info = inode_to_bdi(inode); - err = generic_write_checks(file, &pos, &count, S_ISBLK(inode->i_mode)); + err = generic_write_checks(file, &pos, &count); if (err) goto out; @@ -1420,7 +1420,7 @@ static ssize_t fuse_direct_write_iter(struct kiocb *iocb, struct iov_iter *from) /* Don't allow parallel writes to the same file */ mutex_lock(&inode->i_mutex); - res = generic_write_checks(file, &iocb->ki_pos, &count, 0); + res = generic_write_checks(file, &iocb->ki_pos, &count); if (!res) { iov_iter_truncate(from, count); res = fuse_direct_io(&io, from, &iocb->ki_pos, FUSE_DIO_WRITE); @@ -2841,7 +2841,7 @@ fuse_direct_IO(struct kiocb *iocb, struct iov_iter *iter, loff_t offset) io->done = &wait; if (iov_iter_rw(iter) == WRITE) { - ret = generic_write_checks(file, &pos, &count, 0); + ret = generic_write_checks(file, &pos, &count); if (!ret) { iov_iter_truncate(iter, count); ret = fuse_direct_io(io, iter, &pos, FUSE_DIO_WRITE); diff --git a/fs/ncpfs/file.c b/fs/ncpfs/file.c index 479bf8db264e..ab6363b16556 100644 --- a/fs/ncpfs/file.c +++ b/fs/ncpfs/file.c @@ -177,7 +177,7 @@ ncp_file_write_iter(struct kiocb *iocb, struct iov_iter *from) void *bouncebuffer; ncp_dbg(1, "enter %pD2\n", file); - errno = generic_write_checks(file, &pos, &count, 0); + errno = generic_write_checks(file, &pos, &count); if (errno) return errno; iov_iter_truncate(from, count); diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c index 06503bc604e1..5ddd77acb3f7 100644 --- a/fs/nfs/direct.c +++ b/fs/nfs/direct.c @@ -977,7 +977,7 @@ ssize_t nfs_file_direct_write(struct kiocb *iocb, struct iov_iter *iter, dfprintk(FILE, "NFS: direct write(%pD2, %zd@%Ld)\n", file, count, (long long) pos); - result = generic_write_checks(file, &pos, &count, 0); + result = generic_write_checks(file, &pos, &count); if (result) goto out; diff --git a/fs/ntfs/file.c b/fs/ntfs/file.c index 77087d5ad458..cec4ec3c1ede 100644 --- a/fs/ntfs/file.c +++ b/fs/ntfs/file.c @@ -345,7 +345,7 @@ static ssize_t ntfs_prepare_file_for_write(struct kiocb *iocb, "0x%llx, count 0x%zx.", vi->i_ino, (unsigned)le32_to_cpu(ni->type), (unsigned long long)iocb->ki_pos, count); - err = generic_write_checks(file, &iocb->ki_pos, &count, S_ISBLK(vi->i_mode)); + err = generic_write_checks(file, &iocb->ki_pos, &count); if (unlikely(err)) goto out; iov_iter_truncate(from, count); diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c index 0a6ec7e6efd8..1c11314946cb 100644 --- a/fs/ocfs2/file.c +++ b/fs/ocfs2/file.c @@ -2374,8 +2374,7 @@ relock: /* communicate with ocfs2_dio_end_io */ ocfs2_iocb_set_rw_locked(iocb, rw_level); - ret = generic_write_checks(file, ppos, &count, - S_ISBLK(inode->i_mode)); + ret = generic_write_checks(file, ppos, &count); if (ret) goto out_dio; diff --git a/fs/udf/file.c b/fs/udf/file.c index 35e81ed99405..6834509a7e5a 100644 --- a/fs/udf/file.c +++ b/fs/udf/file.c @@ -151,7 +151,7 @@ static ssize_t udf_file_write_iter(struct kiocb *iocb, struct iov_iter *from) } else up_write(&iinfo->i_data_sem); - retval = generic_write_checks(file, &iocb->ki_pos, &count, 0); + retval = generic_write_checks(file, &iocb->ki_pos, &count); if (retval) goto out; diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c index 44856c3b9617..43c0e6686c47 100644 --- a/fs/xfs/xfs_file.c +++ b/fs/xfs/xfs_file.c @@ -554,7 +554,7 @@ xfs_file_aio_write_checks( int error = 0; restart: - error = generic_write_checks(file, pos, count, S_ISBLK(inode->i_mode)); + error = generic_write_checks(file, pos, count); if (error) return error; diff --git a/include/linux/fs.h b/include/linux/fs.h index 72e3759de8c3..492948ea4c9b 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2566,7 +2566,7 @@ extern int sb_min_blocksize(struct super_block *, int); extern int generic_file_mmap(struct file *, struct vm_area_struct *); extern int generic_file_readonly_mmap(struct file *, struct vm_area_struct *); -int generic_write_checks(struct file *file, loff_t *pos, size_t *count, int isblk); +int generic_write_checks(struct file *file, loff_t *pos, size_t *count); extern ssize_t generic_file_read_iter(struct kiocb *, struct iov_iter *); extern ssize_t __generic_file_write_iter(struct kiocb *, struct iov_iter *); extern ssize_t generic_file_write_iter(struct kiocb *, struct iov_iter *); diff --git a/mm/filemap.c b/mm/filemap.c index a794a7f98743..dfc573c6ec25 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -2260,7 +2260,7 @@ EXPORT_SYMBOL(read_cache_page_gfp); * Returns appropriate error code that caller should return or * zero in case that write should be allowed. */ -inline int generic_write_checks(struct file *file, loff_t *pos, size_t *count, int isblk) +inline int generic_write_checks(struct file *file, loff_t *pos, size_t *count) { struct inode *inode = file->f_mapping->host; unsigned long limit = rlimit(RLIMIT_FSIZE); @@ -2268,20 +2268,17 @@ inline int generic_write_checks(struct file *file, loff_t *pos, size_t *count, i if (unlikely(*pos < 0)) return -EINVAL; - if (!isblk) { - /* FIXME: this is for backwards compatibility with 2.4 */ - if (file->f_flags & O_APPEND) - *pos = i_size_read(inode); + /* FIXME: this is for backwards compatibility with 2.4 */ + if (file->f_flags & O_APPEND) + *pos = i_size_read(inode); - if (limit != RLIM_INFINITY) { - if (*pos >= limit) { - send_sig(SIGXFSZ, current, 0); - return -EFBIG; - } - if (*count > limit - (typeof(limit))*pos) { - *count = limit - (typeof(limit))*pos; - } + if (limit != RLIM_INFINITY) { + if (*pos >= limit) { + send_sig(SIGXFSZ, current, 0); + return -EFBIG; } + if (*count > limit - (typeof(limit))*pos) + *count = limit - (typeof(limit))*pos; } /* @@ -2289,12 +2286,10 @@ inline int generic_write_checks(struct file *file, loff_t *pos, size_t *count, i */ if (unlikely(*pos + *count > MAX_NON_LFS && !(file->f_flags & O_LARGEFILE))) { - if (*pos >= MAX_NON_LFS) { + if (*pos >= MAX_NON_LFS) return -EFBIG; - } - if (*count > MAX_NON_LFS - (unsigned long)*pos) { + if (*count > MAX_NON_LFS - (unsigned long)*pos) *count = MAX_NON_LFS - (unsigned long)*pos; - } } /* @@ -2304,33 +2299,15 @@ inline int generic_write_checks(struct file *file, loff_t *pos, size_t *count, i * exceeded without writing data we send a signal and return EFBIG. * Linus frestrict idea will clean these up nicely.. */ - if (likely(!isblk)) { - if (unlikely(*pos >= inode->i_sb->s_maxbytes)) { - if (*count || *pos > inode->i_sb->s_maxbytes) { - return -EFBIG; - } - /* zero-length writes at ->s_maxbytes are OK */ - } - - if (unlikely(*pos + *count > inode->i_sb->s_maxbytes)) - *count = inode->i_sb->s_maxbytes - *pos; - } else { -#ifdef CONFIG_BLOCK - loff_t isize; - if (bdev_read_only(I_BDEV(inode))) - return -EPERM; - isize = i_size_read(inode); - if (*pos >= isize) { - if (*count || *pos > isize) - return -ENOSPC; + if (unlikely(*pos >= inode->i_sb->s_maxbytes)) { + if (*count || *pos > inode->i_sb->s_maxbytes) { + return -EFBIG; } - - if (*pos + *count > isize) - *count = isize - *pos; -#else - return -EPERM; -#endif + /* zero-length writes at ->s_maxbytes are OK */ } + + if (unlikely(*pos + *count > inode->i_sb->s_maxbytes)) + *count = inode->i_sb->s_maxbytes - *pos; return 0; } EXPORT_SYMBOL(generic_write_checks); @@ -2644,7 +2621,7 @@ ssize_t generic_file_write_iter(struct kiocb *iocb, struct iov_iter *from) size_t count = iov_iter_count(from); mutex_lock(&inode->i_mutex); - ret = generic_write_checks(file, &iocb->ki_pos, &count, 0); + ret = generic_write_checks(file, &iocb->ki_pos, &count); if (!ret && count) { iov_iter_truncate(from, count); ret = __generic_file_write_iter(iocb, from); -- cgit v1.3-14-g43fede From 3309dd04cbcd2cdad168485af5cf3576b5051e49 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Thu, 9 Apr 2015 12:55:47 -0400 Subject: switch generic_write_checks() to iocb and iter ... returning -E... upon error and amount of data left in iter after (possible) truncation upon success. Note, that normal case gives a non-zero (positive) return value, so any tests for != 0 _must_ be updated. Signed-off-by: Al Viro Conflicts: fs/ext4/file.c --- fs/9p/vfs_file.c | 26 ++++++++++---------------- fs/btrfs/file.c | 24 +++++++++--------------- fs/ceph/file.c | 14 ++++++-------- fs/cifs/file.c | 26 ++++++-------------------- fs/ext4/file.c | 20 ++++++-------------- fs/fuse/file.c | 22 +++++++--------------- fs/ncpfs/file.c | 14 +++++--------- fs/nfs/direct.c | 25 ++++++++++--------------- fs/ntfs/file.c | 11 ++++------- fs/ocfs2/file.c | 19 ++++++++++--------- fs/udf/file.c | 10 ++-------- fs/xfs/xfs_file.c | 8 ++++---- include/linux/fs.h | 2 +- mm/filemap.c | 44 +++++++++++++++++++------------------------- 14 files changed, 99 insertions(+), 166 deletions(-) (limited to 'include/linux/fs.h') diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c index b5b020ace1b3..2a9dd37dc426 100644 --- a/fs/9p/vfs_file.c +++ b/fs/9p/vfs_file.c @@ -404,21 +404,16 @@ static ssize_t v9fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from) { struct file *file = iocb->ki_filp; - ssize_t retval = 0; - loff_t origin = iocb->ki_pos; - size_t count = iov_iter_count(from); + ssize_t retval; + loff_t origin; int err = 0; - retval = generic_write_checks(file, &origin, &count); - if (retval) + retval = generic_write_checks(iocb, from); + if (retval <= 0) return retval; - iov_iter_truncate(from, count); - - if (!count) - return 0; - - retval = p9_client_write(file->private_data, origin, from, &err); + origin = iocb->ki_pos; + retval = p9_client_write(file->private_data, iocb->ki_pos, from, &err); if (retval > 0) { struct inode *inode = file_inode(file); loff_t i_size; @@ -428,12 +423,11 @@ v9fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from) if (inode->i_mapping && inode->i_mapping->nrpages) invalidate_inode_pages2_range(inode->i_mapping, pg_start, pg_end); - origin += retval; + iocb->ki_pos += retval; i_size = i_size_read(inode); - iocb->ki_pos = origin; - if (origin > i_size) { - inode_add_bytes(inode, origin - i_size); - i_size_write(inode, origin); + if (iocb->ki_pos > i_size) { + inode_add_bytes(inode, iocb->ki_pos - i_size); + i_size_write(inode, iocb->ki_pos); } return retval; } diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index 691a84a81e09..c64d11c41eeb 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -1739,27 +1739,19 @@ static ssize_t btrfs_file_write_iter(struct kiocb *iocb, u64 start_pos; u64 end_pos; ssize_t num_written = 0; - ssize_t err = 0; - size_t count = iov_iter_count(from); bool sync = (file->f_flags & O_DSYNC) || IS_SYNC(file->f_mapping->host); - loff_t pos = iocb->ki_pos; + ssize_t err; + loff_t pos; + size_t count; mutex_lock(&inode->i_mutex); - - current->backing_dev_info = inode_to_bdi(inode); - err = generic_write_checks(file, &pos, &count); - if (err) { + err = generic_write_checks(iocb, from); + if (err <= 0) { mutex_unlock(&inode->i_mutex); - goto out; - } - - if (count == 0) { - mutex_unlock(&inode->i_mutex); - goto out; + return err; } - iov_iter_truncate(from, count); - + current->backing_dev_info = inode_to_bdi(inode); err = file_remove_suid(file); if (err) { mutex_unlock(&inode->i_mutex); @@ -1786,6 +1778,8 @@ static ssize_t btrfs_file_write_iter(struct kiocb *iocb, */ update_time_for_write(inode); + pos = iocb->ki_pos; + count = iov_iter_count(from); start_pos = round_down(pos, root->sectorsize); if (start_pos > i_size_read(inode)) { /* Expand hole size to cover write data, preventing empty gap */ diff --git a/fs/ceph/file.c b/fs/ceph/file.c index 761841903160..3f0b9339d823 100644 --- a/fs/ceph/file.c +++ b/fs/ceph/file.c @@ -941,9 +941,9 @@ static ssize_t ceph_write_iter(struct kiocb *iocb, struct iov_iter *from) struct ceph_inode_info *ci = ceph_inode(inode); struct ceph_osd_client *osdc = &ceph_sb_to_client(inode->i_sb)->client->osdc; - ssize_t count = iov_iter_count(from), written = 0; + ssize_t count, written = 0; int err, want, got; - loff_t pos = iocb->ki_pos; + loff_t pos; if (ceph_snap(inode) != CEPH_NOSNAP) return -EROFS; @@ -953,14 +953,12 @@ static ssize_t ceph_write_iter(struct kiocb *iocb, struct iov_iter *from) /* We can write back this queue in page reclaim */ current->backing_dev_info = inode_to_bdi(inode); - err = generic_write_checks(file, &pos, &count); - if (err) - goto out; - - if (count == 0) + err = generic_write_checks(iocb, from); + if (err <= 0) goto out; - iov_iter_truncate(from, count); + pos = iocb->ki_pos; + count = iov_iter_count(from); err = file_remove_suid(file); if (err) goto out; diff --git a/fs/cifs/file.c b/fs/cifs/file.c index 4202e74b2db5..ca2bc5406306 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -2563,7 +2563,6 @@ cifs_write_from_iter(loff_t offset, size_t len, struct iov_iter *from, ssize_t cifs_user_writev(struct kiocb *iocb, struct iov_iter *from) { struct file *file = iocb->ki_filp; - size_t len; ssize_t total_written = 0; struct cifsFileInfo *open_file; struct cifs_tcon *tcon; @@ -2579,16 +2578,10 @@ ssize_t cifs_user_writev(struct kiocb *iocb, struct iov_iter *from) * write request. */ - len = iov_iter_count(from); - rc = generic_write_checks(file, &iocb->ki_pos, &len); - if (rc) + rc = generic_write_checks(iocb, from); + if (rc <= 0) return rc; - if (!len) - return 0; - - iov_iter_truncate(from, len); - INIT_LIST_HEAD(&wdata_list); cifs_sb = CIFS_FILE_SB(file); open_file = file->private_data; @@ -2599,8 +2592,8 @@ ssize_t cifs_user_writev(struct kiocb *iocb, struct iov_iter *from) memcpy(&saved_from, from, sizeof(struct iov_iter)); - rc = cifs_write_from_iter(iocb->ki_pos, len, from, open_file, cifs_sb, - &wdata_list); + rc = cifs_write_from_iter(iocb->ki_pos, iov_iter_count(from), from, + open_file, cifs_sb, &wdata_list); /* * If at least one write was successfully sent, then discard any rc @@ -2674,7 +2667,6 @@ cifs_writev(struct kiocb *iocb, struct iov_iter *from) struct cifsInodeInfo *cinode = CIFS_I(inode); struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server; ssize_t rc; - size_t count; /* * We need to hold the sem to be sure nobody modifies lock list @@ -2683,16 +2675,10 @@ cifs_writev(struct kiocb *iocb, struct iov_iter *from) down_read(&cinode->lock_sem); mutex_lock(&inode->i_mutex); - count = iov_iter_count(from); - rc = generic_write_checks(file, &iocb->ki_pos, &count); - if (rc) + rc = generic_write_checks(iocb, from); + if (rc <= 0) goto out; - if (count == 0) - goto out; - - iov_iter_truncate(from, count); - if (!cifs_find_lock_conflict(cfile, iocb->ki_pos, iov_iter_count(from), server->vals->exclusive_lock_type, NULL, CIFS_WRITE_OP)) diff --git a/fs/ext4/file.c b/fs/ext4/file.c index 42b1fa33a17a..c10785f10d1d 100644 --- a/fs/ext4/file.c +++ b/fs/ext4/file.c @@ -97,9 +97,7 @@ ext4_file_write_iter(struct kiocb *iocb, struct iov_iter *from) struct blk_plug plug; int o_direct = io_is_direct(file); int overwrite = 0; - size_t length = iov_iter_count(from); ssize_t ret; - loff_t pos; /* * Unaligned direct AIO must be serialized; see comment above @@ -116,16 +114,10 @@ ext4_file_write_iter(struct kiocb *iocb, struct iov_iter *from) } mutex_lock(&inode->i_mutex); - ret = generic_write_checks(file, &iocb->ki_pos, &length); - if (ret) + ret = generic_write_checks(iocb, from); + if (ret <= 0) goto out; - if (length == 0) - goto out; - - iov_iter_truncate(from, length); - pos = iocb->ki_pos; - /* * If we have encountered a bitmap-format file, the size limit * is smaller than s_maxbytes, which is for extent-mapped files. @@ -133,19 +125,19 @@ ext4_file_write_iter(struct kiocb *iocb, struct iov_iter *from) if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))) { struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb); - if (pos >= sbi->s_bitmap_maxbytes) { + if (iocb->ki_pos >= sbi->s_bitmap_maxbytes) { ret = -EFBIG; goto out; } - iov_iter_truncate(from, sbi->s_bitmap_maxbytes - pos); + iov_iter_truncate(from, sbi->s_bitmap_maxbytes - iocb->ki_pos); } iocb->private = &overwrite; if (o_direct) { - length = iov_iter_count(from); + size_t length = iov_iter_count(from); + loff_t pos = iocb->ki_pos; blk_start_plug(&plug); - /* check whether we do a DIO overwrite or not */ if (ext4_should_dioread_nolock(inode) && !aio_mutex && !file->f_mapping->nrpages && pos + length <= i_size_read(inode)) { diff --git a/fs/fuse/file.c b/fs/fuse/file.c index 8c15d0a077e8..b86c8e08399a 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -1145,13 +1145,11 @@ static ssize_t fuse_file_write_iter(struct kiocb *iocb, struct iov_iter *from) { struct file *file = iocb->ki_filp; struct address_space *mapping = file->f_mapping; - size_t count = iov_iter_count(from); ssize_t written = 0; ssize_t written_buffered = 0; struct inode *inode = mapping->host; ssize_t err; loff_t endbyte = 0; - loff_t pos = iocb->ki_pos; if (get_fuse_conn(inode)->writeback_cache) { /* Update size (EOF optimization) and mode (SUID clearing) */ @@ -1167,14 +1165,10 @@ static ssize_t fuse_file_write_iter(struct kiocb *iocb, struct iov_iter *from) /* We can write back this queue in page reclaim */ current->backing_dev_info = inode_to_bdi(inode); - err = generic_write_checks(file, &pos, &count); - if (err) - goto out; - - if (count == 0) + err = generic_write_checks(iocb, from); + if (err <= 0) goto out; - iov_iter_truncate(from, count); err = file_remove_suid(file); if (err) goto out; @@ -1184,6 +1178,7 @@ static ssize_t fuse_file_write_iter(struct kiocb *iocb, struct iov_iter *from) goto out; if (file->f_flags & O_DIRECT) { + loff_t pos = iocb->ki_pos; written = generic_file_direct_write(iocb, from, pos); if (written < 0 || !iov_iter_count(from)) goto out; @@ -1209,9 +1204,9 @@ static ssize_t fuse_file_write_iter(struct kiocb *iocb, struct iov_iter *from) written += written_buffered; iocb->ki_pos = pos + written_buffered; } else { - written = fuse_perform_write(file, mapping, from, pos); + written = fuse_perform_write(file, mapping, from, iocb->ki_pos); if (written >= 0) - iocb->ki_pos = pos + written; + iocb->ki_pos += written; } out: current->backing_dev_info = NULL; @@ -1412,7 +1407,6 @@ static ssize_t fuse_direct_write_iter(struct kiocb *iocb, struct iov_iter *from) struct file *file = iocb->ki_filp; struct inode *inode = file_inode(file); struct fuse_io_priv io = { .async = 0, .file = file }; - size_t count = iov_iter_count(from); ssize_t res; if (is_bad_inode(inode)) @@ -1420,11 +1414,9 @@ static ssize_t fuse_direct_write_iter(struct kiocb *iocb, struct iov_iter *from) /* Don't allow parallel writes to the same file */ mutex_lock(&inode->i_mutex); - res = generic_write_checks(file, &iocb->ki_pos, &count); - if (!res) { - iov_iter_truncate(from, count); + res = generic_write_checks(iocb, from); + if (res > 0) res = fuse_direct_io(&io, from, &iocb->ki_pos, FUSE_DIO_WRITE); - } fuse_invalidate_attr(inode); if (res > 0) fuse_write_update_size(inode, iocb->ki_pos); diff --git a/fs/ncpfs/file.c b/fs/ncpfs/file.c index ab6363b16556..011324ce9df2 100644 --- a/fs/ncpfs/file.c +++ b/fs/ncpfs/file.c @@ -170,20 +170,15 @@ ncp_file_write_iter(struct kiocb *iocb, struct iov_iter *from) struct file *file = iocb->ki_filp; struct inode *inode = file_inode(file); size_t already_written = 0; - loff_t pos = iocb->ki_pos; - size_t count = iov_iter_count(from); size_t bufsize; int errno; void *bouncebuffer; + off_t pos; ncp_dbg(1, "enter %pD2\n", file); - errno = generic_write_checks(file, &pos, &count); - if (errno) + errno = generic_write_checks(iocb, from); + if (errno <= 0) return errno; - iov_iter_truncate(from, count); - - if (!count) - return 0; errno = ncp_make_open(inode, O_WRONLY); if (errno) { @@ -201,10 +196,11 @@ ncp_file_write_iter(struct kiocb *iocb, struct iov_iter *from) errno = -EIO; /* -ENOMEM */ goto outrel; } + pos = iocb->ki_pos; while (iov_iter_count(from)) { int written_this_time; size_t to_write = min_t(size_t, - bufsize - ((off_t)pos % bufsize), + bufsize - (pos % bufsize), iov_iter_count(from)); if (copy_from_iter(bouncebuffer, to_write, from) != to_write) { diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c index 5ddd77acb3f7..9634189b8545 100644 --- a/fs/nfs/direct.c +++ b/fs/nfs/direct.c @@ -969,24 +969,19 @@ ssize_t nfs_file_direct_write(struct kiocb *iocb, struct iov_iter *iter, struct nfs_direct_req *dreq; struct nfs_lock_context *l_ctx; loff_t end; - size_t count = iov_iter_count(iter); - end = (pos + count - 1) >> PAGE_CACHE_SHIFT; - - nfs_add_stats(mapping->host, NFSIOS_DIRECTWRITTENBYTES, count); dfprintk(FILE, "NFS: direct write(%pD2, %zd@%Ld)\n", - file, count, (long long) pos); + file, iov_iter_count(iter), (long long) iocb->ki_pos); - result = generic_write_checks(file, &pos, &count); - if (result) + result = generic_write_checks(iocb, iter); + if (result <= 0) goto out; - result = -EINVAL; - if ((ssize_t) count < 0) - goto out; - result = 0; - if (!count) - goto out; + nfs_add_stats(mapping->host, NFSIOS_DIRECTWRITTENBYTES, + iov_iter_count(iter)); + + pos = iocb->ki_pos; + end = (pos + iov_iter_count(iter) - 1) >> PAGE_CACHE_SHIFT; mutex_lock(&inode->i_mutex); @@ -1001,7 +996,7 @@ ssize_t nfs_file_direct_write(struct kiocb *iocb, struct iov_iter *iter, goto out_unlock; } - task_io_account_write(count); + task_io_account_write(iov_iter_count(iter)); result = -ENOMEM; dreq = nfs_direct_req_alloc(); @@ -1009,7 +1004,7 @@ ssize_t nfs_file_direct_write(struct kiocb *iocb, struct iov_iter *iter, goto out_unlock; dreq->inode = inode; - dreq->bytes_left = count; + dreq->bytes_left = iov_iter_count(iter); dreq->io_start = pos; dreq->ctx = get_nfs_open_context(nfs_file_open_context(iocb->ki_filp)); l_ctx = nfs_get_lock_context(dreq->ctx); diff --git a/fs/ntfs/file.c b/fs/ntfs/file.c index cec4ec3c1ede..7bb487e663b4 100644 --- a/fs/ntfs/file.c +++ b/fs/ntfs/file.c @@ -339,17 +339,14 @@ static ssize_t ntfs_prepare_file_for_write(struct kiocb *iocb, struct inode *vi = file_inode(file); ntfs_inode *base_ni, *ni = NTFS_I(vi); ntfs_volume *vol = ni->vol; - size_t count = iov_iter_count(from); ntfs_debug("Entering for i_ino 0x%lx, attribute type 0x%x, pos " "0x%llx, count 0x%zx.", vi->i_ino, (unsigned)le32_to_cpu(ni->type), - (unsigned long long)iocb->ki_pos, count); - err = generic_write_checks(file, &iocb->ki_pos, &count); - if (unlikely(err)) - goto out; - iov_iter_truncate(from, count); - if (count == 0) + (unsigned long long)iocb->ki_pos, + iov_iter_count(from)); + err = generic_write_checks(iocb, from); + if (unlikely(err <= 0)) goto out; /* * All checks have passed. Before we start doing any writing we want diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c index fc53ff065364..b93919f50f0f 100644 --- a/fs/ocfs2/file.c +++ b/fs/ocfs2/file.c @@ -2250,9 +2250,10 @@ out: static ssize_t ocfs2_file_write_iter(struct kiocb *iocb, struct iov_iter *from) { - int ret, direct_io, appending, rw_level, have_alloc_sem = 0; + int direct_io, appending, rw_level, have_alloc_sem = 0; int can_do_direct, has_refcount = 0; ssize_t written = 0; + ssize_t ret; size_t count = iov_iter_count(from), orig_count; loff_t old_size; u32 old_clusters; @@ -2319,13 +2320,14 @@ relock: ocfs2_inode_unlock(inode, 1); } - orig_count = count; - ret = generic_write_checks(file, &iocb->ki_pos, &count); - if (ret < 0) { - mlog_errno(ret); + orig_count = iov_iter_count(from); + ret = generic_write_checks(iocb, from); + if (ret <= 0) { + if (ret) + mlog_errno(ret); goto out; } - iov_iter_truncate(from, count); + count = ret; can_do_direct = direct_io; ret = ocfs2_prepare_inode_for_write(file, iocb->ki_pos, count, appending, @@ -2349,7 +2351,7 @@ relock: rw_level = -1; direct_io = 0; - iov_iter_reexpand(from, count = orig_count); + iov_iter_reexpand(from, orig_count); goto relock; } @@ -2377,7 +2379,7 @@ relock: loff_t endbyte; ssize_t written_buffered; written = generic_file_direct_write(iocb, from, iocb->ki_pos); - if (written < 0 || written == count) { + if (written < 0 || !iov_iter_count(from)) { ret = written; goto out_dio; } @@ -2385,7 +2387,6 @@ relock: /* * for completing the rest of the request. */ - count -= written; written_buffered = generic_perform_write(file, from, iocb->ki_pos); /* * If generic_file_buffered_write() returned a synchronous error diff --git a/fs/udf/file.c b/fs/udf/file.c index ccab8b78e363..3de2edafff73 100644 --- a/fs/udf/file.c +++ b/fs/udf/file.c @@ -120,21 +120,15 @@ static ssize_t udf_file_write_iter(struct kiocb *iocb, struct iov_iter *from) ssize_t retval; struct file *file = iocb->ki_filp; struct inode *inode = file_inode(file); - size_t count = iov_iter_count(from); struct udf_inode_info *iinfo = UDF_I(inode); int err; mutex_lock(&inode->i_mutex); - retval = generic_write_checks(file, &iocb->ki_pos, &count); - if (retval) + retval = generic_write_checks(iocb, from); + if (retval <= 0) goto out; - if (count == 0) - goto out; - - iov_iter_truncate(from, count); - down_write(&iinfo->i_data_sem); if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) { loff_t end = iocb->ki_pos + iov_iter_count(from); diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c index ebde43e15dd9..28d157807b42 100644 --- a/fs/xfs/xfs_file.c +++ b/fs/xfs/xfs_file.c @@ -551,12 +551,12 @@ xfs_file_aio_write_checks( struct file *file = iocb->ki_filp; struct inode *inode = file->f_mapping->host; struct xfs_inode *ip = XFS_I(inode); - int error = 0; + ssize_t error = 0; size_t count = iov_iter_count(from); restart: - error = generic_write_checks(file, &iocb->ki_pos, &count); - if (error) + error = generic_write_checks(iocb, from); + if (error <= 0) return error; error = xfs_break_layouts(inode, iolock); @@ -577,13 +577,13 @@ restart: xfs_rw_iunlock(ip, *iolock); *iolock = XFS_IOLOCK_EXCL; xfs_rw_ilock(ip, *iolock); + iov_iter_reexpand(from, count); goto restart; } error = xfs_zero_eof(ip, iocb->ki_pos, i_size_read(inode), &zero); if (error) return error; } - iov_iter_truncate(from, count); /* * Updating the timestamps will grab the ilock again from diff --git a/include/linux/fs.h b/include/linux/fs.h index c7b21db7782f..b4aa400ac723 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2566,7 +2566,7 @@ extern int sb_min_blocksize(struct super_block *, int); extern int generic_file_mmap(struct file *, struct vm_area_struct *); extern int generic_file_readonly_mmap(struct file *, struct vm_area_struct *); -int generic_write_checks(struct file *file, loff_t *pos, size_t *count); +extern ssize_t generic_write_checks(struct kiocb *, struct iov_iter *); extern ssize_t generic_file_read_iter(struct kiocb *, struct iov_iter *); extern ssize_t __generic_file_write_iter(struct kiocb *, struct iov_iter *); extern ssize_t generic_file_write_iter(struct kiocb *, struct iov_iter *); diff --git a/mm/filemap.c b/mm/filemap.c index dfc573c6ec25..243997a26e7c 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -2260,36 +2260,38 @@ EXPORT_SYMBOL(read_cache_page_gfp); * Returns appropriate error code that caller should return or * zero in case that write should be allowed. */ -inline int generic_write_checks(struct file *file, loff_t *pos, size_t *count) +inline ssize_t generic_write_checks(struct kiocb *iocb, struct iov_iter *from) { + struct file *file = iocb->ki_filp; struct inode *inode = file->f_mapping->host; unsigned long limit = rlimit(RLIMIT_FSIZE); + loff_t pos; - if (unlikely(*pos < 0)) - return -EINVAL; + if (!iov_iter_count(from)) + return 0; /* FIXME: this is for backwards compatibility with 2.4 */ if (file->f_flags & O_APPEND) - *pos = i_size_read(inode); + iocb->ki_pos = i_size_read(inode); + + pos = iocb->ki_pos; if (limit != RLIM_INFINITY) { - if (*pos >= limit) { + if (iocb->ki_pos >= limit) { send_sig(SIGXFSZ, current, 0); return -EFBIG; } - if (*count > limit - (typeof(limit))*pos) - *count = limit - (typeof(limit))*pos; + iov_iter_truncate(from, limit - (unsigned long)pos); } /* * LFS rule */ - if (unlikely(*pos + *count > MAX_NON_LFS && + if (unlikely(pos + iov_iter_count(from) > MAX_NON_LFS && !(file->f_flags & O_LARGEFILE))) { - if (*pos >= MAX_NON_LFS) + if (pos >= MAX_NON_LFS) return -EFBIG; - if (*count > MAX_NON_LFS - (unsigned long)*pos) - *count = MAX_NON_LFS - (unsigned long)*pos; + iov_iter_truncate(from, MAX_NON_LFS - (unsigned long)pos); } /* @@ -2299,16 +2301,11 @@ inline int generic_write_checks(struct file *file, loff_t *pos, size_t *count) * exceeded without writing data we send a signal and return EFBIG. * Linus frestrict idea will clean these up nicely.. */ - if (unlikely(*pos >= inode->i_sb->s_maxbytes)) { - if (*count || *pos > inode->i_sb->s_maxbytes) { - return -EFBIG; - } - /* zero-length writes at ->s_maxbytes are OK */ - } + if (unlikely(pos >= inode->i_sb->s_maxbytes)) + return -EFBIG; - if (unlikely(*pos + *count > inode->i_sb->s_maxbytes)) - *count = inode->i_sb->s_maxbytes - *pos; - return 0; + iov_iter_truncate(from, inode->i_sb->s_maxbytes - pos); + return iov_iter_count(from); } EXPORT_SYMBOL(generic_write_checks); @@ -2618,14 +2615,11 @@ ssize_t generic_file_write_iter(struct kiocb *iocb, struct iov_iter *from) struct file *file = iocb->ki_filp; struct inode *inode = file->f_mapping->host; ssize_t ret; - size_t count = iov_iter_count(from); mutex_lock(&inode->i_mutex); - ret = generic_write_checks(file, &iocb->ki_pos, &count); - if (!ret && count) { - iov_iter_truncate(from, count); + ret = generic_write_checks(iocb, from); + if (ret > 0) ret = __generic_file_write_iter(iocb, from); - } mutex_unlock(&inode->i_mutex); if (ret > 0) { -- cgit v1.3-14-g43fede From 2ba48ce513c4e545318d22b138861d5876edf906 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Thu, 9 Apr 2015 13:52:01 -0400 Subject: mirror O_APPEND and O_DIRECT into iocb->ki_flags ... avoiding write_iter/fcntl races. Signed-off-by: Al Viro --- fs/aio.c | 2 +- fs/btrfs/file.c | 2 +- fs/ceph/file.c | 8 ++++---- fs/ext4/file.c | 4 ++-- fs/fuse/file.c | 2 +- fs/gfs2/file.c | 2 +- fs/nfs/file.c | 6 +++--- fs/ocfs2/file.c | 10 +++++----- fs/xfs/xfs_file.c | 4 ++-- include/linux/fs.h | 15 +++++++++++++++ mm/filemap.c | 6 +++--- 11 files changed, 38 insertions(+), 23 deletions(-) (limited to 'include/linux/fs.h') diff --git a/fs/aio.c b/fs/aio.c index 5785c4b58fea..e976185c8e5b 100644 --- a/fs/aio.c +++ b/fs/aio.c @@ -1502,7 +1502,7 @@ static int io_submit_one(struct kioctx *ctx, struct iocb __user *user_iocb, } req->common.ki_pos = iocb->aio_offset; req->common.ki_complete = aio_complete; - req->common.ki_flags = 0; + req->common.ki_flags = iocb_flags(req->common.ki_filp); if (iocb->aio_flags & IOCB_FLAG_RESFD) { /* diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index c64d11c41eeb..faa7d390841b 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -1794,7 +1794,7 @@ static ssize_t btrfs_file_write_iter(struct kiocb *iocb, if (sync) atomic_inc(&BTRFS_I(inode)->sync_writers); - if (file->f_flags & O_DIRECT) { + if (iocb->ki_flags & IOCB_DIRECT) { num_written = __btrfs_direct_write(iocb, from, pos); } else { num_written = __btrfs_buffered_write(file, from, pos); diff --git a/fs/ceph/file.c b/fs/ceph/file.c index 3f0b9339d823..b9b8eb225f66 100644 --- a/fs/ceph/file.c +++ b/fs/ceph/file.c @@ -457,7 +457,7 @@ static ssize_t ceph_sync_read(struct kiocb *iocb, struct iov_iter *i, if (ret < 0) return ret; - if (file->f_flags & O_DIRECT) { + if (iocb->ki_flags & IOCB_DIRECT) { while (iov_iter_count(i)) { size_t start; ssize_t n; @@ -828,7 +828,7 @@ again: return ret; if ((got & (CEPH_CAP_FILE_CACHE|CEPH_CAP_FILE_LAZYIO)) == 0 || - (iocb->ki_filp->f_flags & O_DIRECT) || + (iocb->ki_flags & IOCB_DIRECT) || (fi->flags & CEPH_F_SYNC)) { dout("aio_sync_read %p %llx.%llx %llu~%u got cap refs on %s\n", @@ -995,12 +995,12 @@ retry_snap: inode, ceph_vinop(inode), pos, count, ceph_cap_string(got)); if ((got & (CEPH_CAP_FILE_BUFFER|CEPH_CAP_FILE_LAZYIO)) == 0 || - (file->f_flags & O_DIRECT) || (fi->flags & CEPH_F_SYNC)) { + (iocb->ki_flags & IOCB_DIRECT) || (fi->flags & CEPH_F_SYNC)) { struct iov_iter data; mutex_unlock(&inode->i_mutex); /* we might need to revert back to that point */ data = *from; - if (file->f_flags & O_DIRECT) + if (iocb->ki_flags & IOCB_DIRECT) written = ceph_sync_direct_write(iocb, &data, pos); else written = ceph_sync_write(iocb, &data, pos); diff --git a/fs/ext4/file.c b/fs/ext4/file.c index c10785f10d1d..53bbc0b1995f 100644 --- a/fs/ext4/file.c +++ b/fs/ext4/file.c @@ -95,7 +95,7 @@ ext4_file_write_iter(struct kiocb *iocb, struct iov_iter *from) struct inode *inode = file_inode(iocb->ki_filp); struct mutex *aio_mutex = NULL; struct blk_plug plug; - int o_direct = io_is_direct(file); + int o_direct = iocb->ki_flags & IOCB_DIRECT; int overwrite = 0; ssize_t ret; @@ -106,7 +106,7 @@ ext4_file_write_iter(struct kiocb *iocb, struct iov_iter *from) if (o_direct && ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS) && !is_sync_kiocb(iocb) && - (file->f_flags & O_APPEND || + (iocb->ki_flags & IOCB_APPEND || ext4_unaligned_aio(inode, from, iocb->ki_pos))) { aio_mutex = ext4_aio_mutex(inode); mutex_lock(aio_mutex); diff --git a/fs/fuse/file.c b/fs/fuse/file.c index b86c8e08399a..5ef05b5c4cff 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -1177,7 +1177,7 @@ static ssize_t fuse_file_write_iter(struct kiocb *iocb, struct iov_iter *from) if (err) goto out; - if (file->f_flags & O_DIRECT) { + if (iocb->ki_flags & IOCB_DIRECT) { loff_t pos = iocb->ki_pos; written = generic_file_direct_write(iocb, from, pos); if (written < 0 || !iov_iter_count(from)) diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c index 614bb42cb7e1..08329afa1339 100644 --- a/fs/gfs2/file.c +++ b/fs/gfs2/file.c @@ -709,7 +709,7 @@ static ssize_t gfs2_file_write_iter(struct kiocb *iocb, struct iov_iter *from) gfs2_size_hint(file, iocb->ki_pos, iov_iter_count(from)); - if (file->f_flags & O_APPEND) { + if (iocb->ki_flags & IOCB_APPEND) { struct gfs2_holder gh; ret = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, 0, &gh); diff --git a/fs/nfs/file.c b/fs/nfs/file.c index f6a3adedf027..14364dc001f7 100644 --- a/fs/nfs/file.c +++ b/fs/nfs/file.c @@ -170,7 +170,7 @@ nfs_file_read(struct kiocb *iocb, struct iov_iter *to) struct inode *inode = file_inode(iocb->ki_filp); ssize_t result; - if (iocb->ki_filp->f_flags & O_DIRECT) + if (iocb->ki_flags & IOCB_DIRECT) return nfs_file_direct_read(iocb, to, iocb->ki_pos); dprintk("NFS: read(%pD2, %zu@%lu)\n", @@ -680,7 +680,7 @@ ssize_t nfs_file_write(struct kiocb *iocb, struct iov_iter *from) if (result) return result; - if (file->f_flags & O_DIRECT) + if (iocb->ki_flags & IOCB_DIRECT) return nfs_file_direct_write(iocb, from, pos); dprintk("NFS: write(%pD2, %zu@%Ld)\n", @@ -692,7 +692,7 @@ ssize_t nfs_file_write(struct kiocb *iocb, struct iov_iter *from) /* * O_APPEND implies that we must revalidate the file length. */ - if (file->f_flags & O_APPEND) { + if (iocb->ki_flags & IOCB_APPEND) { result = nfs_revalidate_file_size(inode, file); if (result) goto out; diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c index b93919f50f0f..cd37f6cd4d51 100644 --- a/fs/ocfs2/file.c +++ b/fs/ocfs2/file.c @@ -2274,8 +2274,8 @@ static ssize_t ocfs2_file_write_iter(struct kiocb *iocb, if (count == 0) return 0; - appending = file->f_flags & O_APPEND ? 1 : 0; - direct_io = file->f_flags & O_DIRECT ? 1 : 0; + appending = iocb->ki_flags & IOCB_APPEND ? 1 : 0; + direct_io = iocb->ki_flags & IOCB_DIRECT ? 1 : 0; mutex_lock(&inode->i_mutex); @@ -2429,7 +2429,7 @@ relock: out_dio: /* buffered aio wouldn't have proper lock coverage today */ - BUG_ON(ret == -EIOCBQUEUED && !(file->f_flags & O_DIRECT)); + BUG_ON(ret == -EIOCBQUEUED && !(iocb->ki_flags & IOCB_DIRECT)); if (unlikely(written <= 0)) goto no_sync; @@ -2546,7 +2546,7 @@ static ssize_t ocfs2_file_read_iter(struct kiocb *iocb, * buffered reads protect themselves in ->readpage(). O_DIRECT reads * need locks to protect pending reads from racing with truncate. */ - if (filp->f_flags & O_DIRECT) { + if (iocb->ki_flags & IOCB_DIRECT) { have_alloc_sem = 1; ocfs2_iocb_set_sem_locked(iocb); @@ -2580,7 +2580,7 @@ static ssize_t ocfs2_file_read_iter(struct kiocb *iocb, trace_generic_file_aio_read_ret(ret); /* buffered aio wouldn't have proper lock coverage today */ - BUG_ON(ret == -EIOCBQUEUED && !(filp->f_flags & O_DIRECT)); + BUG_ON(ret == -EIOCBQUEUED && !(iocb->ki_flags & IOCB_DIRECT)); /* see ocfs2_file_write_iter */ if (ret == -EIOCBQUEUED || !ocfs2_iocb_is_rw_locked(iocb)) { diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c index 28d157807b42..1f12ad0a8585 100644 --- a/fs/xfs/xfs_file.c +++ b/fs/xfs/xfs_file.c @@ -279,7 +279,7 @@ xfs_file_read_iter( XFS_STATS_INC(xs_read_calls); - if (unlikely(file->f_flags & O_DIRECT)) + if (unlikely(iocb->ki_flags & IOCB_DIRECT)) ioflags |= XFS_IO_ISDIRECT; if (file->f_mode & FMODE_NOCMTIME) ioflags |= XFS_IO_INVIS; @@ -804,7 +804,7 @@ xfs_file_write_iter( if (XFS_FORCED_SHUTDOWN(ip->i_mount)) return -EIO; - if (unlikely(file->f_flags & O_DIRECT)) + if (unlikely(iocb->ki_flags & IOCB_DIRECT)) ret = xfs_file_dio_aio_write(iocb, from); else ret = xfs_file_buffered_aio_write(iocb, from); diff --git a/include/linux/fs.h b/include/linux/fs.h index b4aa400ac723..b1d7db28c13c 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -315,6 +315,8 @@ struct address_space; struct writeback_control; #define IOCB_EVENTFD (1 << 0) +#define IOCB_APPEND (1 << 1) +#define IOCB_DIRECT (1 << 2) struct kiocb { struct file *ki_filp; @@ -329,10 +331,13 @@ static inline bool is_sync_kiocb(struct kiocb *kiocb) return kiocb->ki_complete == NULL; } +static inline int iocb_flags(struct file *file); + static inline void init_sync_kiocb(struct kiocb *kiocb, struct file *filp) { *kiocb = (struct kiocb) { .ki_filp = filp, + .ki_flags = iocb_flags(filp), }; } @@ -2779,6 +2784,16 @@ static inline bool io_is_direct(struct file *filp) return (filp->f_flags & O_DIRECT) || IS_DAX(file_inode(filp)); } +static inline int iocb_flags(struct file *file) +{ + int res = 0; + if (file->f_flags & O_APPEND) + res |= IOCB_APPEND; + if (io_is_direct(file)) + res |= IOCB_DIRECT; + return res; +} + static inline ino_t parent_ino(struct dentry *dentry) { ino_t res; diff --git a/mm/filemap.c b/mm/filemap.c index 243997a26e7c..405de370e657 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -1694,7 +1694,7 @@ generic_file_read_iter(struct kiocb *iocb, struct iov_iter *iter) loff_t *ppos = &iocb->ki_pos; loff_t pos = *ppos; - if (io_is_direct(file)) { + if (iocb->ki_flags & IOCB_DIRECT) { struct address_space *mapping = file->f_mapping; struct inode *inode = mapping->host; size_t count = iov_iter_count(iter); @@ -2271,7 +2271,7 @@ inline ssize_t generic_write_checks(struct kiocb *iocb, struct iov_iter *from) return 0; /* FIXME: this is for backwards compatibility with 2.4 */ - if (file->f_flags & O_APPEND) + if (iocb->ki_flags & IOCB_APPEND) iocb->ki_pos = i_size_read(inode); pos = iocb->ki_pos; @@ -2545,7 +2545,7 @@ ssize_t __generic_file_write_iter(struct kiocb *iocb, struct iov_iter *from) if (err) goto out; - if (io_is_direct(file)) { + if (iocb->ki_flags & IOCB_DIRECT) { loff_t pos, endbyte; written = generic_file_direct_write(iocb, from, iocb->ki_pos); -- cgit v1.3-14-g43fede From f2b91d8d385d2cef3a1e3b3846f2dde4a6720c43 Mon Sep 17 00:00:00 2001 From: Zhang Zhen Date: Wed, 15 Apr 2015 16:12:51 -0700 Subject: vfs: delete vfs_readdir function declaration vfs_readdir() was replaced by iterate_dir() in commit 5c0ba4e0762e ("[readdir] introduce iterate_dir() and dir_context"). Signed-off-by: Zhang Zhen Cc: Al Viro Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/fs.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux/fs.h') diff --git a/include/linux/fs.h b/include/linux/fs.h index d502e5436c84..60733bdc74b4 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2684,7 +2684,6 @@ void inode_sub_bytes(struct inode *inode, loff_t bytes); loff_t inode_get_bytes(struct inode *inode); void inode_set_bytes(struct inode *inode, loff_t bytes); -extern int vfs_readdir(struct file *, filldir_t, void *); extern int iterate_dir(struct file *, struct dir_context *); extern int vfs_stat(const char __user *, struct kstat *); -- cgit v1.3-14-g43fede From 0e3b210ce1722168227cb3bc7746256d0c0afece Mon Sep 17 00:00:00 2001 From: Boaz Harrosh Date: Wed, 15 Apr 2015 16:15:14 -0700 Subject: dax: use pfn_mkwrite to update c/mtime + freeze protection From: Yigal Korman [v1] Without this patch, c/mtime is not updated correctly when mmap'ed page is first read from and then written to. A new xfstest is submitted for testing this (generic/080) [v2] Jan Kara has pointed out that if we add the sb_start/end_pagefault pair in the new pfn_mkwrite we are then fixing another bug where: A user could start writing to the page while filesystem is frozen. Signed-off-by: Yigal Korman Signed-off-by: Boaz Harrosh Reviewed-by: Jan Kara Cc: Matthew Wilcox Cc: Dave Chinner Cc: Hugh Dickins Cc: Mel Gorman Cc: Kirill A. Shutemov Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/dax.c | 17 +++++++++++++++++ fs/ext2/file.c | 1 + fs/ext4/file.c | 1 + include/linux/fs.h | 1 + 4 files changed, 20 insertions(+) (limited to 'include/linux/fs.h') diff --git a/fs/dax.c b/fs/dax.c index ed1619ec6537..d0bd1f4f81b3 100644 --- a/fs/dax.c +++ b/fs/dax.c @@ -463,6 +463,23 @@ int dax_fault(struct vm_area_struct *vma, struct vm_fault *vmf, } EXPORT_SYMBOL_GPL(dax_fault); +/** + * dax_pfn_mkwrite - handle first write to DAX page + * @vma: The virtual memory area where the fault occurred + * @vmf: The description of the fault + * + */ +int dax_pfn_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf) +{ + struct super_block *sb = file_inode(vma->vm_file)->i_sb; + + sb_start_pagefault(sb); + file_update_time(vma->vm_file); + sb_end_pagefault(sb); + return VM_FAULT_NOPAGE; +} +EXPORT_SYMBOL_GPL(dax_pfn_mkwrite); + /** * dax_zero_page_range - zero a range within a page of a DAX file * @inode: The file being truncated diff --git a/fs/ext2/file.c b/fs/ext2/file.c index e31701713516..866a3ce3f864 100644 --- a/fs/ext2/file.c +++ b/fs/ext2/file.c @@ -39,6 +39,7 @@ static int ext2_dax_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf) static const struct vm_operations_struct ext2_dax_vm_ops = { .fault = ext2_dax_fault, .page_mkwrite = ext2_dax_mkwrite, + .pfn_mkwrite = dax_pfn_mkwrite, }; static int ext2_file_mmap(struct file *file, struct vm_area_struct *vma) diff --git a/fs/ext4/file.c b/fs/ext4/file.c index 598abbbe6786..aa78c70553f4 100644 --- a/fs/ext4/file.c +++ b/fs/ext4/file.c @@ -206,6 +206,7 @@ static int ext4_dax_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf) static const struct vm_operations_struct ext4_dax_vm_ops = { .fault = ext4_dax_fault, .page_mkwrite = ext4_dax_mkwrite, + .pfn_mkwrite = dax_pfn_mkwrite, }; #else #define ext4_dax_vm_ops ext4_file_vm_ops diff --git a/include/linux/fs.h b/include/linux/fs.h index 60733bdc74b4..0f696328f218 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2620,6 +2620,7 @@ int dax_clear_blocks(struct inode *, sector_t block, long size); int dax_zero_page_range(struct inode *, loff_t from, unsigned len, get_block_t); int dax_truncate_page(struct inode *, loff_t from, get_block_t); int dax_fault(struct vm_area_struct *, struct vm_fault *, get_block_t); +int dax_pfn_mkwrite(struct vm_area_struct *, struct vm_fault *); #define dax_mkwrite(vma, vmf, gb) dax_fault(vma, vmf, gb) #ifdef CONFIG_BLOCK -- cgit v1.3-14-g43fede From 90f31d0ea88880f780574f3d0bb1a227c4c66ca3 Mon Sep 17 00:00:00 2001 From: Konstantin Khlebnikov Date: Thu, 16 Apr 2015 12:47:56 -0700 Subject: mm: rcu-protected get_mm_exe_file() This patch removes mm->mmap_sem from mm->exe_file read side. Also it kills dup_mm_exe_file() and moves exe_file duplication into dup_mmap() where both mmap_sems are locked. [akpm@linux-foundation.org: fix comment typo] Signed-off-by: Konstantin Khlebnikov Cc: Davidlohr Bueso Cc: Al Viro Cc: Oleg Nesterov Cc: "Paul E. McKenney" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/file.c | 3 +-- include/linux/fs.h | 1 + include/linux/mm_types.h | 2 +- kernel/fork.c | 56 ++++++++++++++++++++++++++++++++---------------- 4 files changed, 40 insertions(+), 22 deletions(-) (limited to 'include/linux/fs.h') diff --git a/fs/file.c b/fs/file.c index ee738ea028fa..93c5f89c248b 100644 --- a/fs/file.c +++ b/fs/file.c @@ -638,8 +638,7 @@ static struct file *__fget(unsigned int fd, fmode_t mask) file = fcheck_files(files, fd); if (file) { /* File object ref couldn't be taken */ - if ((file->f_mode & mask) || - !atomic_long_inc_not_zero(&file->f_count)) + if ((file->f_mode & mask) || !get_file_rcu(file)) file = NULL; } rcu_read_unlock(); diff --git a/include/linux/fs.h b/include/linux/fs.h index f4fc60727b8d..6bf7ab7c1573 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -870,6 +870,7 @@ static inline struct file *get_file(struct file *f) atomic_long_inc(&f->f_count); return f; } +#define get_file_rcu(x) atomic_long_inc_not_zero(&(x)->f_count) #define fput_atomic(x) atomic_long_add_unless(&(x)->f_count, -1, 1) #define file_count(x) atomic_long_read(&(x)->f_count) diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index 590630eb59ba..8d37e26a1007 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -429,7 +429,7 @@ struct mm_struct { #endif /* store ref to file /proc//exe symlink points to */ - struct file *exe_file; + struct file __rcu *exe_file; #ifdef CONFIG_MMU_NOTIFIER struct mmu_notifier_mm *mmu_notifier_mm; #endif diff --git a/kernel/fork.c b/kernel/fork.c index 8807a129711b..259202637531 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -403,6 +403,9 @@ static int dup_mmap(struct mm_struct *mm, struct mm_struct *oldmm) */ down_write_nested(&mm->mmap_sem, SINGLE_DEPTH_NESTING); + /* No ordering required: file already has been exposed. */ + RCU_INIT_POINTER(mm->exe_file, get_mm_exe_file(oldmm)); + mm->total_vm = oldmm->total_vm; mm->shared_vm = oldmm->shared_vm; mm->exec_vm = oldmm->exec_vm; @@ -528,7 +531,13 @@ static inline void mm_free_pgd(struct mm_struct *mm) pgd_free(mm, mm->pgd); } #else -#define dup_mmap(mm, oldmm) (0) +static int dup_mmap(struct mm_struct *mm, struct mm_struct *oldmm) +{ + down_write(&oldmm->mmap_sem); + RCU_INIT_POINTER(mm->exe_file, get_mm_exe_file(oldmm)); + up_write(&oldmm->mmap_sem); + return 0; +} #define mm_alloc_pgd(mm) (0) #define mm_free_pgd(mm) #endif /* CONFIG_MMU */ @@ -697,35 +706,46 @@ void mmput(struct mm_struct *mm) } EXPORT_SYMBOL_GPL(mmput); +/** + * set_mm_exe_file - change a reference to the mm's executable file + * + * This changes mm's executable file (shown as symlink /proc/[pid]/exe). + * + * Main users are mmput(), sys_execve() and sys_prctl(PR_SET_MM_MAP/EXE_FILE). + * Callers prevent concurrent invocations: in mmput() nobody alive left, + * in execve task is single-threaded, prctl holds mmap_sem exclusively. + */ void set_mm_exe_file(struct mm_struct *mm, struct file *new_exe_file) { + struct file *old_exe_file = rcu_dereference_protected(mm->exe_file, + !atomic_read(&mm->mm_users) || current->in_execve || + lockdep_is_held(&mm->mmap_sem)); + if (new_exe_file) get_file(new_exe_file); - if (mm->exe_file) - fput(mm->exe_file); - mm->exe_file = new_exe_file; + rcu_assign_pointer(mm->exe_file, new_exe_file); + if (old_exe_file) + fput(old_exe_file); } +/** + * get_mm_exe_file - acquire a reference to the mm's executable file + * + * Returns %NULL if mm has no associated executable file. + * User must release file via fput(). + */ struct file *get_mm_exe_file(struct mm_struct *mm) { struct file *exe_file; - /* We need mmap_sem to protect against races with removal of exe_file */ - down_read(&mm->mmap_sem); - exe_file = mm->exe_file; - if (exe_file) - get_file(exe_file); - up_read(&mm->mmap_sem); + rcu_read_lock(); + exe_file = rcu_dereference(mm->exe_file); + if (exe_file && !get_file_rcu(exe_file)) + exe_file = NULL; + rcu_read_unlock(); return exe_file; } -static void dup_mm_exe_file(struct mm_struct *oldmm, struct mm_struct *newmm) -{ - /* It's safe to write the exe_file pointer without exe_file_lock because - * this is called during fork when the task is not yet in /proc */ - newmm->exe_file = get_mm_exe_file(oldmm); -} - /** * get_task_mm - acquire a reference to the task's mm * @@ -887,8 +907,6 @@ static struct mm_struct *dup_mm(struct task_struct *tsk) if (!mm_init(mm, tsk)) goto fail_nomem; - dup_mm_exe_file(oldmm, mm); - err = dup_mmap(mm, oldmm); if (err) goto free_pt; -- cgit v1.3-14-g43fede From 6c8c90319c0bb1c9e0b68e721359b89ae4f28465 Mon Sep 17 00:00:00 2001 From: Andrey Vagin Date: Thu, 16 Apr 2015 12:49:38 -0700 Subject: proc: show locks in /proc/pid/fdinfo/X Let's show locks which are associated with a file descriptor in its fdinfo file. Currently we don't have a reliable way to determine who holds a lock. We can find some information in /proc/locks, but PID which is reported there can be wrong. For example, a process takes a lock, then forks a child and dies. In this case /proc/locks contains the parent pid, which can be reused by another process. $ cat /proc/locks ... 6: FLOCK ADVISORY WRITE 324 00:13:13431 0 EOF ... $ ps -C rpcbind PID TTY TIME CMD 332 ? 00:00:00 rpcbind $ cat /proc/332/fdinfo/4 pos: 0 flags: 0100000 mnt_id: 22 lock: 1: FLOCK ADVISORY WRITE 324 00:13:13431 0 EOF $ ls -l /proc/332/fd/4 lr-x------ 1 root root 64 Mar 5 14:43 /proc/332/fd/4 -> /run/rpcbind.lock $ ls -l /proc/324/fd/ total 0 lrwx------ 1 root root 64 Feb 27 14:50 0 -> /dev/pts/0 lrwx------ 1 root root 64 Feb 27 14:50 1 -> /dev/pts/0 lrwx------ 1 root root 64 Feb 27 14:49 2 -> /dev/pts/0 You can see that the process with the 324 pid doesn't hold the lock. This information is required for proper dumping and restoring file locks. Signed-off-by: Andrey Vagin Cc: Jonathan Corbet Cc: Alexander Viro Acked-by: Jeff Layton Acked-by: "J. Bruce Fields" Acked-by: Cyrill Gorcunov Cc: Pavel Emelyanov Cc: Joe Perches Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Documentation/filesystems/proc.txt | 4 ++++ fs/locks.c | 38 ++++++++++++++++++++++++++++++++++++++ fs/proc/fd.c | 27 +++++++++++++++++---------- include/linux/fs.h | 7 +++++++ 4 files changed, 66 insertions(+), 10 deletions(-) (limited to 'include/linux/fs.h') diff --git a/Documentation/filesystems/proc.txt b/Documentation/filesystems/proc.txt index 6d370622fdfe..8e36c7e3c345 100644 --- a/Documentation/filesystems/proc.txt +++ b/Documentation/filesystems/proc.txt @@ -1709,6 +1709,10 @@ A typical output is flags: 0100002 mnt_id: 19 +All locks associated with a file descriptor are shown in its fdinfo too. + +lock: 1: FLOCK ADVISORY WRITE 359 00:13:11691 0 EOF + The files such as eventfd, fsnotify, signalfd, epoll among the regular pos/flags pair provide additional information particular to the objects they represent. diff --git a/fs/locks.c b/fs/locks.c index 52b780fb5258..653faabb07f4 100644 --- a/fs/locks.c +++ b/fs/locks.c @@ -2590,6 +2590,44 @@ static int locks_show(struct seq_file *f, void *v) return 0; } +static void __show_fd_locks(struct seq_file *f, + struct list_head *head, int *id, + struct file *filp, struct files_struct *files) +{ + struct file_lock *fl; + + list_for_each_entry(fl, head, fl_list) { + + if (filp != fl->fl_file) + continue; + if (fl->fl_owner != files && + fl->fl_owner != filp) + continue; + + (*id)++; + seq_puts(f, "lock:\t"); + lock_get_status(f, fl, *id, ""); + } +} + +void show_fd_locks(struct seq_file *f, + struct file *filp, struct files_struct *files) +{ + struct inode *inode = file_inode(filp); + struct file_lock_context *ctx; + int id = 0; + + ctx = inode->i_flctx; + if (!ctx) + return; + + spin_lock(&ctx->flc_lock); + __show_fd_locks(f, &ctx->flc_flock, &id, filp, files); + __show_fd_locks(f, &ctx->flc_posix, &id, filp, files); + __show_fd_locks(f, &ctx->flc_lease, &id, filp, files); + spin_unlock(&ctx->flc_lock); +} + static void *locks_start(struct seq_file *f, loff_t *pos) __acquires(&blocked_lock_lock) { diff --git a/fs/proc/fd.c b/fs/proc/fd.c index 8e5ad83b629a..af84ad04df77 100644 --- a/fs/proc/fd.c +++ b/fs/proc/fd.c @@ -8,6 +8,7 @@ #include #include #include +#include #include @@ -48,17 +49,23 @@ static int seq_show(struct seq_file *m, void *v) put_files_struct(files); } - if (!ret) { - seq_printf(m, "pos:\t%lli\nflags:\t0%o\nmnt_id:\t%i\n", - (long long)file->f_pos, f_flags, - real_mount(file->f_path.mnt)->mnt_id); - if (file->f_op->show_fdinfo) - file->f_op->show_fdinfo(m, file); - ret = seq_has_overflowed(m); - fput(file); - } + if (ret) + return ret; - return ret; + seq_printf(m, "pos:\t%lli\nflags:\t0%o\nmnt_id:\t%i\n", + (long long)file->f_pos, f_flags, + real_mount(file->f_path.mnt)->mnt_id); + + show_fd_locks(m, file, files); + if (seq_has_overflowed(m)) + goto out; + + if (file->f_op->show_fdinfo) + file->f_op->show_fdinfo(m, file); + +out: + fput(file); + return 0; } static int seq_fdinfo_open(struct inode *inode, struct file *file) diff --git a/include/linux/fs.h b/include/linux/fs.h index 6bf7ab7c1573..c4e927358503 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1042,6 +1042,9 @@ extern void lease_get_mtime(struct inode *, struct timespec *time); extern int generic_setlease(struct file *, long, struct file_lock **, void **priv); extern int vfs_setlease(struct file *, long, struct file_lock **, void **); extern int lease_modify(struct file_lock *, int, struct list_head *); +struct files_struct; +extern void show_fd_locks(struct seq_file *f, + struct file *filp, struct files_struct *files); #else /* !CONFIG_FILE_LOCKING */ static inline int fcntl_getlk(struct file *file, unsigned int cmd, struct flock __user *user) @@ -1178,6 +1181,10 @@ static inline int lease_modify(struct file_lock *fl, int arg, { return -EINVAL; } + +struct files_struct; +static inline void show_fd_locks(struct seq_file *f, + struct file *filp, struct files_struct *files) {} #endif /* !CONFIG_FILE_LOCKING */ -- cgit v1.3-14-g43fede