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-rw-r--r--fs/Kconfig17
-rw-r--r--fs/aio.c2
-rw-r--r--fs/btrfs/file.c113
-rw-r--r--fs/btrfs/inode.c111
-rw-r--r--fs/cifs/connect.c2
-rw-r--r--fs/cifs/netmisc.c4
-rw-r--r--fs/compat.c10
-rw-r--r--fs/ext4/ext4.h2
-rw-r--r--fs/ext4/extents.c11
-rw-r--r--fs/ext4/file.c2
-rw-r--r--fs/file_table.c2
-rw-r--r--fs/gfs2/file.c258
-rw-r--r--fs/gfs2/ops_inode.c258
-rw-r--r--fs/hpfs/inode.c2
-rw-r--r--fs/internal.h3
-rw-r--r--fs/ioctl.c10
-rw-r--r--fs/jffs2/build.c5
-rw-r--r--fs/jffs2/jffs2_fs_sb.h2
-rw-r--r--fs/jffs2/xattr.c12
-rw-r--r--fs/namei.c31
-rw-r--r--fs/namespace.c63
-rw-r--r--fs/ocfs2/file.c10
-rw-r--r--fs/open.c4
-rw-r--r--fs/xfs/linux-2.6/xfs_file.c56
-rw-r--r--fs/xfs/linux-2.6/xfs_iops.c57
-rw-r--r--fs/xfs/support/debug.c6
26 files changed, 523 insertions, 530 deletions
diff --git a/fs/Kconfig b/fs/Kconfig
index 771f457402d4..9a7921ae4763 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -30,15 +30,6 @@ config FS_MBCACHE
source "fs/reiserfs/Kconfig"
source "fs/jfs/Kconfig"
-config FS_POSIX_ACL
-# Posix ACL utility routines (for now, only ext2/ext3/jfs/reiserfs/nfs4)
-#
-# NOTE: you can implement Posix ACLs without these helpers (XFS does).
-# Never use this symbol for ifdefs.
-#
- bool
- default n
-
source "fs/xfs/Kconfig"
source "fs/gfs2/Kconfig"
source "fs/ocfs2/Kconfig"
@@ -47,6 +38,14 @@ source "fs/nilfs2/Kconfig"
endif # BLOCK
+# Posix ACL utility routines
+#
+# Note: Posix ACLs can be implemented without these helpers. Never use
+# this symbol for ifdefs in core code.
+#
+config FS_POSIX_ACL
+ def_bool n
+
config EXPORTFS
tristate
diff --git a/fs/aio.c b/fs/aio.c
index 5e00f15c54aa..fc557a3be0a9 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -87,7 +87,7 @@ static int __init aio_setup(void)
aio_wq = create_workqueue("aio");
abe_pool = mempool_create_kmalloc_pool(1, sizeof(struct aio_batch_entry));
- BUG_ON(!abe_pool);
+ BUG_ON(!aio_wq || !abe_pool);
pr_debug("aio_setup: sizeof(struct page) = %d\n", (int)sizeof(struct page));
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index 66836d85763b..a9e0a4eaf3d9 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -24,6 +24,7 @@
#include <linux/string.h>
#include <linux/backing-dev.h>
#include <linux/mpage.h>
+#include <linux/falloc.h>
#include <linux/swap.h>
#include <linux/writeback.h>
#include <linux/statfs.h>
@@ -1237,6 +1238,117 @@ static int btrfs_file_mmap(struct file *filp, struct vm_area_struct *vma)
return 0;
}
+static long btrfs_fallocate(struct file *file, int mode,
+ loff_t offset, loff_t len)
+{
+ struct inode *inode = file->f_path.dentry->d_inode;
+ struct extent_state *cached_state = NULL;
+ u64 cur_offset;
+ u64 last_byte;
+ u64 alloc_start;
+ u64 alloc_end;
+ u64 alloc_hint = 0;
+ u64 locked_end;
+ u64 mask = BTRFS_I(inode)->root->sectorsize - 1;
+ struct extent_map *em;
+ int ret;
+
+ alloc_start = offset & ~mask;
+ alloc_end = (offset + len + mask) & ~mask;
+
+ /* We only support the FALLOC_FL_KEEP_SIZE mode */
+ if (mode & ~FALLOC_FL_KEEP_SIZE)
+ return -EOPNOTSUPP;
+
+ /*
+ * wait for ordered IO before we have any locks. We'll loop again
+ * below with the locks held.
+ */
+ btrfs_wait_ordered_range(inode, alloc_start, alloc_end - alloc_start);
+
+ mutex_lock(&inode->i_mutex);
+ ret = inode_newsize_ok(inode, alloc_end);
+ if (ret)
+ goto out;
+
+ if (alloc_start > inode->i_size) {
+ ret = btrfs_cont_expand(inode, alloc_start);
+ if (ret)
+ goto out;
+ }
+
+ ret = btrfs_check_data_free_space(inode, alloc_end - alloc_start);
+ if (ret)
+ goto out;
+
+ locked_end = alloc_end - 1;
+ while (1) {
+ struct btrfs_ordered_extent *ordered;
+
+ /* the extent lock is ordered inside the running
+ * transaction
+ */
+ lock_extent_bits(&BTRFS_I(inode)->io_tree, alloc_start,
+ locked_end, 0, &cached_state, GFP_NOFS);
+ ordered = btrfs_lookup_first_ordered_extent(inode,
+ alloc_end - 1);
+ if (ordered &&
+ ordered->file_offset + ordered->len > alloc_start &&
+ ordered->file_offset < alloc_end) {
+ btrfs_put_ordered_extent(ordered);
+ unlock_extent_cached(&BTRFS_I(inode)->io_tree,
+ alloc_start, locked_end,
+ &cached_state, GFP_NOFS);
+ /*
+ * we can't wait on the range with the transaction
+ * running or with the extent lock held
+ */
+ btrfs_wait_ordered_range(inode, alloc_start,
+ alloc_end - alloc_start);
+ } else {
+ if (ordered)
+ btrfs_put_ordered_extent(ordered);
+ break;
+ }
+ }
+
+ cur_offset = alloc_start;
+ while (1) {
+ em = btrfs_get_extent(inode, NULL, 0, cur_offset,
+ alloc_end - cur_offset, 0);
+ BUG_ON(IS_ERR(em) || !em);
+ last_byte = min(extent_map_end(em), alloc_end);
+ last_byte = (last_byte + mask) & ~mask;
+ if (em->block_start == EXTENT_MAP_HOLE ||
+ (cur_offset >= inode->i_size &&
+ !test_bit(EXTENT_FLAG_PREALLOC, &em->flags))) {
+ ret = btrfs_prealloc_file_range(inode, mode, cur_offset,
+ last_byte - cur_offset,
+ 1 << inode->i_blkbits,
+ offset + len,
+ &alloc_hint);
+ if (ret < 0) {
+ free_extent_map(em);
+ break;
+ }
+ }
+ free_extent_map(em);
+
+ cur_offset = last_byte;
+ if (cur_offset >= alloc_end) {
+ ret = 0;
+ break;
+ }
+ }
+ unlock_extent_cached(&BTRFS_I(inode)->io_tree, alloc_start, locked_end,
+ &cached_state, GFP_NOFS);
+
+ btrfs_free_reserved_data_space(inode, alloc_end - alloc_start);
+out:
+ mutex_unlock(&inode->i_mutex);
+ return ret;
+}
+
const struct file_operations btrfs_file_operations = {
.llseek = generic_file_llseek,
.read = do_sync_read,
@@ -1248,6 +1360,7 @@ const struct file_operations btrfs_file_operations = {
.open = generic_file_open,
.release = btrfs_release_file,
.fsync = btrfs_sync_file,
+ .fallocate = btrfs_fallocate,
.unlocked_ioctl = btrfs_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = btrfs_ioctl,
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index a3798a3aa0d2..902afbf50811 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -7098,116 +7098,6 @@ int btrfs_prealloc_file_range_trans(struct inode *inode,
min_size, actual_len, alloc_hint, trans);
}
-static long btrfs_fallocate(struct inode *inode, int mode,
- loff_t offset, loff_t len)
-{
- struct extent_state *cached_state = NULL;
- u64 cur_offset;
- u64 last_byte;
- u64 alloc_start;
- u64 alloc_end;
- u64 alloc_hint = 0;
- u64 locked_end;
- u64 mask = BTRFS_I(inode)->root->sectorsize - 1;
- struct extent_map *em;
- int ret;
-
- alloc_start = offset & ~mask;
- alloc_end = (offset + len + mask) & ~mask;
-
- /* We only support the FALLOC_FL_KEEP_SIZE mode */
- if (mode && (mode != FALLOC_FL_KEEP_SIZE))
- return -EOPNOTSUPP;
-
- /*
- * wait for ordered IO before we have any locks. We'll loop again
- * below with the locks held.
- */
- btrfs_wait_ordered_range(inode, alloc_start, alloc_end - alloc_start);
-
- mutex_lock(&inode->i_mutex);
- ret = inode_newsize_ok(inode, alloc_end);
- if (ret)
- goto out;
-
- if (alloc_start > inode->i_size) {
- ret = btrfs_cont_expand(inode, alloc_start);
- if (ret)
- goto out;
- }
-
- ret = btrfs_check_data_free_space(inode, alloc_end - alloc_start);
- if (ret)
- goto out;
-
- locked_end = alloc_end - 1;
- while (1) {
- struct btrfs_ordered_extent *ordered;
-
- /* the extent lock is ordered inside the running
- * transaction
- */
- lock_extent_bits(&BTRFS_I(inode)->io_tree, alloc_start,
- locked_end, 0, &cached_state, GFP_NOFS);
- ordered = btrfs_lookup_first_ordered_extent(inode,
- alloc_end - 1);
- if (ordered &&
- ordered->file_offset + ordered->len > alloc_start &&
- ordered->file_offset < alloc_end) {
- btrfs_put_ordered_extent(ordered);
- unlock_extent_cached(&BTRFS_I(inode)->io_tree,
- alloc_start, locked_end,
- &cached_state, GFP_NOFS);
- /*
- * we can't wait on the range with the transaction
- * running or with the extent lock held
- */
- btrfs_wait_ordered_range(inode, alloc_start,
- alloc_end - alloc_start);
- } else {
- if (ordered)
- btrfs_put_ordered_extent(ordered);
- break;
- }
- }
-
- cur_offset = alloc_start;
- while (1) {
- em = btrfs_get_extent(inode, NULL, 0, cur_offset,
- alloc_end - cur_offset, 0);
- BUG_ON(IS_ERR(em) || !em);
- last_byte = min(extent_map_end(em), alloc_end);
- last_byte = (last_byte + mask) & ~mask;
- if (em->block_start == EXTENT_MAP_HOLE ||
- (cur_offset >= inode->i_size &&
- !test_bit(EXTENT_FLAG_PREALLOC, &em->flags))) {
- ret = btrfs_prealloc_file_range(inode, mode, cur_offset,
- last_byte - cur_offset,
- 1 << inode->i_blkbits,
- offset + len,
- &alloc_hint);
- if (ret < 0) {
- free_extent_map(em);
- break;
- }
- }
- free_extent_map(em);
-
- cur_offset = last_byte;
- if (cur_offset >= alloc_end) {
- ret = 0;
- break;
- }
- }
- unlock_extent_cached(&BTRFS_I(inode)->io_tree, alloc_start, locked_end,
- &cached_state, GFP_NOFS);
-
- btrfs_free_reserved_data_space(inode, alloc_end - alloc_start);
-out:
- mutex_unlock(&inode->i_mutex);
- return ret;
-}
-
static int btrfs_set_page_dirty(struct page *page)
{
return __set_page_dirty_nobuffers(page);
@@ -7310,7 +7200,6 @@ static const struct inode_operations btrfs_file_inode_operations = {
.listxattr = btrfs_listxattr,
.removexattr = btrfs_removexattr,
.permission = btrfs_permission,
- .fallocate = btrfs_fallocate,
.fiemap = btrfs_fiemap,
};
static const struct inode_operations btrfs_special_inode_operations = {
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index a65d311d163a..9f59887badd2 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -1113,6 +1113,8 @@ cifs_parse_mount_options(char *options, const char *devname,
} else if (!strnicmp(data, "uid", 3) && value && *value) {
vol->linux_uid = simple_strtoul(value, &value, 0);
uid_specified = true;
+ } else if (!strnicmp(data, "cruid", 5) && value && *value) {
+ vol->cred_uid = simple_strtoul(value, &value, 0);
} else if (!strnicmp(data, "forceuid", 8)) {
override_uid = 1;
} else if (!strnicmp(data, "noforceuid", 10)) {
diff --git a/fs/cifs/netmisc.c b/fs/cifs/netmisc.c
index 9aad47a2d62f..6783ce6cdc89 100644
--- a/fs/cifs/netmisc.c
+++ b/fs/cifs/netmisc.c
@@ -899,8 +899,8 @@ map_smb_to_linux_error(struct smb_hdr *smb, int logErr)
}
/* else ERRHRD class errors or junk - return EIO */
- cFYI(1, "Mapping smb error code %d to POSIX err %d",
- smberrcode, rc);
+ cFYI(1, "Mapping smb error code 0x%x to POSIX err %d",
+ le32_to_cpu(smb->Status.CifsError), rc);
/* generic corrective action e.g. reconnect SMB session on
* ERRbaduid could be added */
diff --git a/fs/compat.c b/fs/compat.c
index eb1740ac8c0a..f6fd0a00e6cc 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -257,7 +257,7 @@ static int put_compat_statfs(struct compat_statfs __user *ubuf, struct kstatfs *
}
/*
- * The following statfs calls are copies of code from fs/open.c and
+ * The following statfs calls are copies of code from fs/statfs.c and
* should be checked against those from time to time
*/
asmlinkage long compat_sys_statfs(const char __user *pathname, struct compat_statfs __user *buf)
@@ -320,7 +320,9 @@ static int put_compat_statfs64(struct compat_statfs64 __user *ubuf, struct kstat
__put_user(kbuf->f_namelen, &ubuf->f_namelen) ||
__put_user(kbuf->f_fsid.val[0], &ubuf->f_fsid.val[0]) ||
__put_user(kbuf->f_fsid.val[1], &ubuf->f_fsid.val[1]) ||
- __put_user(kbuf->f_frsize, &ubuf->f_frsize))
+ __put_user(kbuf->f_frsize, &ubuf->f_frsize) ||
+ __put_user(kbuf->f_flags, &ubuf->f_flags) ||
+ __clear_user(ubuf->f_spare, sizeof(ubuf->f_spare)))
return -EFAULT;
return 0;
}
@@ -597,10 +599,8 @@ ssize_t compat_rw_copy_check_uvector(int type,
if (nr_segs > fast_segs) {
ret = -ENOMEM;
iov = kmalloc(nr_segs*sizeof(struct iovec), GFP_KERNEL);
- if (iov == NULL) {
- *ret_pointer = fast_pointer;
+ if (iov == NULL)
goto out;
- }
}
*ret_pointer = iov;
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 1de65f572033..0c8d97b56f34 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -2065,7 +2065,7 @@ extern int ext4_ext_map_blocks(handle_t *handle, struct inode *inode,
extern void ext4_ext_truncate(struct inode *);
extern void ext4_ext_init(struct super_block *);
extern void ext4_ext_release(struct super_block *);
-extern long ext4_fallocate(struct inode *inode, int mode, loff_t offset,
+extern long ext4_fallocate(struct file *file, int mode, loff_t offset,
loff_t len);
extern int ext4_convert_unwritten_extents(struct inode *inode, loff_t offset,
ssize_t len);
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index c4068f6abf03..63a75810b7c3 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -3627,14 +3627,15 @@ static void ext4_falloc_update_inode(struct inode *inode,
}
/*
- * preallocate space for a file. This implements ext4's fallocate inode
+ * preallocate space for a file. This implements ext4's fallocate file
* operation, which gets called from sys_fallocate system call.
* For block-mapped files, posix_fallocate should fall back to the method
* of writing zeroes to the required new blocks (the same behavior which is
* expected for file systems which do not support fallocate() system call).
*/
-long ext4_fallocate(struct inode *inode, int mode, loff_t offset, loff_t len)
+long ext4_fallocate(struct file *file, int mode, loff_t offset, loff_t len)
{
+ struct inode *inode = file->f_path.dentry->d_inode;
handle_t *handle;
loff_t new_size;
unsigned int max_blocks;
@@ -3645,7 +3646,7 @@ long ext4_fallocate(struct inode *inode, int mode, loff_t offset, loff_t len)
unsigned int credits, blkbits = inode->i_blkbits;
/* We only support the FALLOC_FL_KEEP_SIZE mode */
- if (mode && (mode != FALLOC_FL_KEEP_SIZE))
+ if (mode & ~FALLOC_FL_KEEP_SIZE)
return -EOPNOTSUPP;
/*
@@ -3655,10 +3656,6 @@ long ext4_fallocate(struct inode *inode, int mode, loff_t offset, loff_t len)
if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)))
return -EOPNOTSUPP;
- /* preallocation to directories is currently not supported */
- if (S_ISDIR(inode->i_mode))
- return -ENODEV;
-
map.m_lblk = offset >> blkbits;
/*
* We can't just convert len to max_blocks because
diff --git a/fs/ext4/file.c b/fs/ext4/file.c
index bb003dc9ffff..2e8322c8aa88 100644
--- a/fs/ext4/file.c
+++ b/fs/ext4/file.c
@@ -210,6 +210,7 @@ const struct file_operations ext4_file_operations = {
.fsync = ext4_sync_file,
.splice_read = generic_file_splice_read,
.splice_write = generic_file_splice_write,
+ .fallocate = ext4_fallocate,
};
const struct inode_operations ext4_file_inode_operations = {
@@ -223,7 +224,6 @@ const struct inode_operations ext4_file_inode_operations = {
.removexattr = generic_removexattr,
#endif
.check_acl = ext4_check_acl,
- .fallocate = ext4_fallocate,
.fiemap = ext4_fiemap,
};
diff --git a/fs/file_table.c b/fs/file_table.c
index c3dee381f1b4..c3e89adf53c0 100644
--- a/fs/file_table.c
+++ b/fs/file_table.c
@@ -311,7 +311,7 @@ struct file *fget_light(unsigned int fd, int *fput_needed)
struct files_struct *files = current->files;
*fput_needed = 0;
- if (likely((atomic_read(&files->count) == 1))) {
+ if (atomic_read(&files->count) == 1) {
file = fcheck_files(files, fd);
} else {
rcu_read_lock();
diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c
index fca6689e12e6..7cfdcb913363 100644
--- a/fs/gfs2/file.c
+++ b/fs/gfs2/file.c
@@ -19,6 +19,8 @@
#include <linux/fs.h>
#include <linux/gfs2_ondisk.h>
#include <linux/ext2_fs.h>
+#include <linux/falloc.h>
+#include <linux/swap.h>
#include <linux/crc32.h>
#include <linux/writeback.h>
#include <asm/uaccess.h>
@@ -610,6 +612,260 @@ static ssize_t gfs2_file_aio_write(struct kiocb *iocb, const struct iovec *iov,
return generic_file_aio_write(iocb, iov, nr_segs, pos);
}
+static void empty_write_end(struct page *page, unsigned from,
+ unsigned to)
+{
+ struct gfs2_inode *ip = GFS2_I(page->mapping->host);
+
+ page_zero_new_buffers(page, from, to);
+ flush_dcache_page(page);
+ mark_page_accessed(page);
+
+ if (!gfs2_is_writeback(ip))
+ gfs2_page_add_databufs(ip, page, from, to);
+
+ block_commit_write(page, from, to);
+}
+
+static int write_empty_blocks(struct page *page, unsigned from, unsigned to)
+{
+ unsigned start, end, next;
+ struct buffer_head *bh, *head;
+ int error;
+
+ if (!page_has_buffers(page)) {
+ error = __block_write_begin(page, from, to - from, gfs2_block_map);
+ if (unlikely(error))
+ return error;
+
+ empty_write_end(page, from, to);
+ return 0;
+ }
+
+ bh = head = page_buffers(page);
+ next = end = 0;
+ while (next < from) {
+ next += bh->b_size;
+ bh = bh->b_this_page;
+ }
+ start = next;
+ do {
+ next += bh->b_size;
+ if (buffer_mapped(bh)) {
+ if (end) {
+ error = __block_write_begin(page, start, end - start,
+ gfs2_block_map);
+ if (unlikely(error))
+ return error;
+ empty_write_end(page, start, end);
+ end = 0;
+ }
+ start = next;
+ }
+ else
+ end = next;
+ bh = bh->b_this_page;
+ } while (next < to);
+
+ if (end) {
+ error = __block_write_begin(page, start, end - start, gfs2_block_map);
+ if (unlikely(error))
+ return error;
+ empty_write_end(page, start, end);
+ }
+
+ return 0;
+}
+
+static int fallocate_chunk(struct inode *inode, loff_t offset, loff_t len,
+ int mode)
+{
+ struct gfs2_inode *ip = GFS2_I(inode);
+ struct buffer_head *dibh;
+ int error;
+ u64 start = offset >> PAGE_CACHE_SHIFT;
+ unsigned int start_offset = offset & ~PAGE_CACHE_MASK;
+ u64 end = (offset + len - 1) >> PAGE_CACHE_SHIFT;
+ pgoff_t curr;
+ struct page *page;
+ unsigned int end_offset = (offset + len) & ~PAGE_CACHE_MASK;
+ unsigned int from, to;
+
+ if (!end_offset)
+ end_offset = PAGE_CACHE_SIZE;
+
+ error = gfs2_meta_inode_buffer(ip, &dibh);
+ if (unlikely(error))
+ goto out;
+
+ gfs2_trans_add_bh(ip->i_gl, dibh, 1);
+
+ if (gfs2_is_stuffed(ip)) {
+ error = gfs2_unstuff_dinode(ip, NULL);
+ if (unlikely(error))
+ goto out;
+ }
+
+ curr = start;
+ offset = start << PAGE_CACHE_SHIFT;
+ from = start_offset;
+ to = PAGE_CACHE_SIZE;
+ while (curr <= end) {
+ page = grab_cache_page_write_begin(inode->i_mapping, curr,
+ AOP_FLAG_NOFS);
+ if (unlikely(!page)) {
+ error = -ENOMEM;
+ goto out;
+ }
+
+ if (curr == end)
+ to = end_offset;
+ error = write_empty_blocks(page, from, to);
+ if (!error && offset + to > inode->i_size &&
+ !(mode & FALLOC_FL_KEEP_SIZE)) {
+ i_size_write(inode, offset + to);
+ }
+ unlock_page(page);
+ page_cache_release(page);
+ if (error)
+ goto out;
+ curr++;
+ offset += PAGE_CACHE_SIZE;
+ from = 0;
+ }
+
+ gfs2_dinode_out(ip, dibh->b_data);
+ mark_inode_dirty(inode);
+
+ brelse(dibh);
+
+out:
+ return error;
+}
+
+static void calc_max_reserv(struct gfs2_inode *ip, loff_t max, loff_t *len,
+ unsigned int *data_blocks, unsigned int *ind_blocks)
+{
+ const struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
+ unsigned int max_blocks = ip->i_alloc->al_rgd->rd_free_clone;
+ unsigned int tmp, max_data = max_blocks - 3 * (sdp->sd_max_height - 1);
+
+ for (tmp = max_data; tmp > sdp->sd_diptrs;) {
+ tmp = DIV_ROUND_UP(tmp, sdp->sd_inptrs);
+ max_data -= tmp;
+ }
+ /* This calculation isn't the exact reverse of gfs2_write_calc_reserve,
+ so it might end up with fewer data blocks */
+ if (max_data <= *data_blocks)
+ return;
+ *data_blocks = max_data;
+ *ind_blocks = max_blocks - max_data;
+ *len = ((loff_t)max_data - 3) << sdp->sd_sb.sb_bsize_shift;
+ if (*len > max) {
+ *len = max;
+ gfs2_write_calc_reserv(ip, max, data_blocks, ind_blocks);
+ }
+}
+
+static long gfs2_fallocate(struct file *file, int mode, loff_t offset,
+ loff_t len)
+{
+ struct inode *inode = file->f_path.dentry->d_inode;
+ struct gfs2_sbd *sdp = GFS2_SB(inode);
+ struct gfs2_inode *ip = GFS2_I(inode);
+ unsigned int data_blocks = 0, ind_blocks = 0, rblocks;
+ loff_t bytes, max_bytes;
+ struct gfs2_alloc *al;
+ int error;
+ loff_t next = (offset + len - 1) >> sdp->sd_sb.sb_bsize_shift;
+ next = (next + 1) << sdp->sd_sb.sb_bsize_shift;
+
+ /* We only support the FALLOC_FL_KEEP_SIZE mode */
+ if (mode & ~FALLOC_FL_KEEP_SIZE)
+ return -EOPNOTSUPP;
+
+ offset = (offset >> sdp->sd_sb.sb_bsize_shift) <<
+ sdp->sd_sb.sb_bsize_shift;
+
+ len = next - offset;
+ bytes = sdp->sd_max_rg_data * sdp->sd_sb.sb_bsize / 2;
+ if (!bytes)
+ bytes = UINT_MAX;
+
+ gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &ip->i_gh);
+ error = gfs2_glock_nq(&ip->i_gh);
+ if (unlikely(error))
+ goto out_uninit;
+
+ if (!gfs2_write_alloc_required(ip, offset, len))
+ goto out_unlock;
+
+ while (len > 0) {
+ if (len < bytes)
+ bytes = len;
+ al = gfs2_alloc_get(ip);
+ if (!al) {
+ error = -ENOMEM;
+ goto out_unlock;
+ }
+
+ error = gfs2_quota_lock_check(ip);
+ if (error)
+ goto out_alloc_put;
+
+retry:
+ gfs2_write_calc_reserv(ip, bytes, &data_blocks, &ind_blocks);
+
+ al->al_requested = data_blocks + ind_blocks;
+ error = gfs2_inplace_reserve(ip);
+ if (error) {
+ if (error == -ENOSPC && bytes > sdp->sd_sb.sb_bsize) {
+ bytes >>= 1;
+ goto retry;
+ }
+ goto out_qunlock;
+ }
+ max_bytes = bytes;
+ calc_max_reserv(ip, len, &max_bytes, &data_blocks, &ind_blocks);
+ al->al_requested = data_blocks + ind_blocks;
+
+ rblocks = RES_DINODE + ind_blocks + RES_STATFS + RES_QUOTA +
+ RES_RG_HDR + gfs2_rg_blocks(al);
+ if (gfs2_is_jdata(ip))
+ rblocks += data_blocks ? data_blocks : 1;
+
+ error = gfs2_trans_begin(sdp, rblocks,
+ PAGE_CACHE_SIZE/sdp->sd_sb.sb_bsize);
+ if (error)
+ goto out_trans_fail;
+
+ error = fallocate_chunk(inode, offset, max_bytes, mode);
+ gfs2_trans_end(sdp);
+
+ if (error)
+ goto out_trans_fail;
+
+ len -= max_bytes;
+ offset += max_bytes;
+ gfs2_inplace_release(ip);
+ gfs2_quota_unlock(ip);
+ gfs2_alloc_put(ip);
+ }
+ goto out_unlock;
+
+out_trans_fail:
+ gfs2_inplace_release(ip);
+out_qunlock:
+ gfs2_quota_unlock(ip);
+out_alloc_put:
+ gfs2_alloc_put(ip);
+out_unlock:
+ gfs2_glock_dq(&ip->i_gh);
+out_uninit:
+ gfs2_holder_uninit(&ip->i_gh);
+ return error;
+}
+
#ifdef CONFIG_GFS2_FS_LOCKING_DLM
/**
@@ -765,6 +1021,7 @@ const struct file_operations gfs2_file_fops = {
.splice_read = generic_file_splice_read,
.splice_write = generic_file_splice_write,
.setlease = gfs2_setlease,
+ .fallocate = gfs2_fallocate,
};
const struct file_operations gfs2_dir_fops = {
@@ -794,6 +1051,7 @@ const struct file_operations gfs2_file_fops_nolock = {
.splice_read = generic_file_splice_read,
.splice_write = generic_file_splice_write,
.setlease = generic_setlease,
+ .fallocate = gfs2_fallocate,
};
const struct file_operations gfs2_dir_fops_nolock = {
diff --git a/fs/gfs2/ops_inode.c b/fs/gfs2/ops_inode.c
index 040b5a2e6556..d8b26ac2e20b 100644
--- a/fs/gfs2/ops_inode.c
+++ b/fs/gfs2/ops_inode.c
@@ -18,8 +18,6 @@
#include <linux/gfs2_ondisk.h>
#include <linux/crc32.h>
#include <linux/fiemap.h>
-#include <linux/swap.h>
-#include <linux/falloc.h>
#include <asm/uaccess.h>
#include "gfs2.h"
@@ -1257,261 +1255,6 @@ static int gfs2_removexattr(struct dentry *dentry, const char *name)
return ret;
}
-static void empty_write_end(struct page *page, unsigned from,
- unsigned to)
-{
- struct gfs2_inode *ip = GFS2_I(page->mapping->host);
-
- page_zero_new_buffers(page, from, to);
- flush_dcache_page(page);
- mark_page_accessed(page);
-
- if (!gfs2_is_writeback(ip))
- gfs2_page_add_databufs(ip, page, from, to);
-
- block_commit_write(page, from, to);
-}
-
-
-static int write_empty_blocks(struct page *page, unsigned from, unsigned to)
-{
- unsigned start, end, next;
- struct buffer_head *bh, *head;
- int error;
-
- if (!page_has_buffers(page)) {
- error = __block_write_begin(page, from, to - from, gfs2_block_map);
- if (unlikely(error))
- return error;
-
- empty_write_end(page, from, to);
- return 0;
- }
-
- bh = head = page_buffers(page);
- next = end = 0;
- while (next < from) {
- next += bh->b_size;
- bh = bh->b_this_page;
- }
- start = next;
- do {
- next += bh->b_size;
- if (buffer_mapped(bh)) {
- if (end) {
- error = __block_write_begin(page, start, end - start,
- gfs2_block_map);
- if (unlikely(error))
- return error;
- empty_write_end(page, start, end);
- end = 0;
- }
- start = next;
- }
- else
- end = next;
- bh = bh->b_this_page;
- } while (next < to);
-
- if (end) {
- error = __block_write_begin(page, start, end - start, gfs2_block_map);
- if (unlikely(error))
- return error;
- empty_write_end(page, start, end);
- }
-
- return 0;
-}
-
-static int fallocate_chunk(struct inode *inode, loff_t offset, loff_t len,
- int mode)
-{
- struct gfs2_inode *ip = GFS2_I(inode);
- struct buffer_head *dibh;
- int error;
- u64 start = offset >> PAGE_CACHE_SHIFT;
- unsigned int start_offset = offset & ~PAGE_CACHE_MASK;
- u64 end = (offset + len - 1) >> PAGE_CACHE_SHIFT;
- pgoff_t curr;
- struct page *page;
- unsigned int end_offset = (offset + len) & ~PAGE_CACHE_MASK;
- unsigned int from, to;
-
- if (!end_offset)
- end_offset = PAGE_CACHE_SIZE;
-
- error = gfs2_meta_inode_buffer(ip, &dibh);
- if (unlikely(error))
- goto out;
-
- gfs2_trans_add_bh(ip->i_gl, dibh, 1);
-
- if (gfs2_is_stuffed(ip)) {
- error = gfs2_unstuff_dinode(ip, NULL);
- if (unlikely(error))
- goto out;
- }
-
- curr = start;
- offset = start << PAGE_CACHE_SHIFT;
- from = start_offset;
- to = PAGE_CACHE_SIZE;
- while (curr <= end) {
- page = grab_cache_page_write_begin(inode->i_mapping, curr,
- AOP_FLAG_NOFS);
- if (unlikely(!page)) {
- error = -ENOMEM;
- goto out;
- }
-
- if (curr == end)
- to = end_offset;
- error = write_empty_blocks(page, from, to);
- if (!error && offset + to > inode->i_size &&
- !(mode & FALLOC_FL_KEEP_SIZE)) {
- i_size_write(inode, offset + to);
- }
- unlock_page(page);
- page_cache_release(page);
- if (error)
- goto out;
- curr++;
- offset += PAGE_CACHE_SIZE;
- from = 0;
- }
-
- gfs2_dinode_out(ip, dibh->b_data);
- mark_inode_dirty(inode);
-
- brelse(dibh);
-
-out:
- return error;
-}
-
-static void calc_max_reserv(struct gfs2_inode *ip, loff_t max, loff_t *len,
- unsigned int *data_blocks, unsigned int *ind_blocks)
-{
- const struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
- unsigned int max_blocks = ip->i_alloc->al_rgd->rd_free_clone;
- unsigned int tmp, max_data = max_blocks - 3 * (sdp->sd_max_height - 1);
-
- for (tmp = max_data; tmp > sdp->sd_diptrs;) {
- tmp = DIV_ROUND_UP(tmp, sdp->sd_inptrs);
- max_data -= tmp;
- }
- /* This calculation isn't the exact reverse of gfs2_write_calc_reserve,
- so it might end up with fewer data blocks */
- if (max_data <= *data_blocks)
- return;
- *data_blocks = max_data;
- *ind_blocks = max_blocks - max_data;
- *len = ((loff_t)max_data - 3) << sdp->sd_sb.sb_bsize_shift;
- if (*len > max) {
- *len = max;
- gfs2_write_calc_reserv(ip, max, data_blocks, ind_blocks);
- }
-}
-
-static long gfs2_fallocate(struct inode *inode, int mode, loff_t offset,
- loff_t len)
-{
- struct gfs2_sbd *sdp = GFS2_SB(inode);
- struct gfs2_inode *ip = GFS2_I(inode);
- unsigned int data_blocks = 0, ind_blocks = 0, rblocks;
- loff_t bytes, max_bytes;
- struct gfs2_alloc *al;
- int error;
- loff_t next = (offset + len - 1) >> sdp->sd_sb.sb_bsize_shift;
- next = (next + 1) << sdp->sd_sb.sb_bsize_shift;
-
- /* We only support the FALLOC_FL_KEEP_SIZE mode */
- if (mode && (mode != FALLOC_FL_KEEP_SIZE))
- return -EOPNOTSUPP;
-
- offset = (offset >> sdp->sd_sb.sb_bsize_shift) <<
- sdp->sd_sb.sb_bsize_shift;
-
- len = next - offset;
- bytes = sdp->sd_max_rg_data * sdp->sd_sb.sb_bsize / 2;
- if (!bytes)
- bytes = UINT_MAX;
-
- gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &ip->i_gh);
- error = gfs2_glock_nq(&ip->i_gh);
- if (unlikely(error))
- goto out_uninit;
-
- if (!gfs2_write_alloc_required(ip, offset, len))
- goto out_unlock;
-
- while (len > 0) {
- if (len < bytes)
- bytes = len;
- al = gfs2_alloc_get(ip);
- if (!al) {
- error = -ENOMEM;
- goto out_unlock;
- }
-
- error = gfs2_quota_lock_check(ip);
- if (error)
- goto out_alloc_put;
-
-retry:
- gfs2_write_calc_reserv(ip, bytes, &data_blocks, &ind_blocks);
-
- al->al_requested = data_blocks + ind_blocks;
- error = gfs2_inplace_reserve(ip);
- if (error) {
- if (error == -ENOSPC && bytes > sdp->sd_sb.sb_bsize) {
- bytes >>= 1;
- goto retry;
- }
- goto out_qunlock;
- }
- max_bytes = bytes;
- calc_max_reserv(ip, len, &max_bytes, &data_blocks, &ind_blocks);
- al->al_requested = data_blocks + ind_blocks;
-
- rblocks = RES_DINODE + ind_blocks + RES_STATFS + RES_QUOTA +
- RES_RG_HDR + gfs2_rg_blocks(al);
- if (gfs2_is_jdata(ip))
- rblocks += data_blocks ? data_blocks : 1;
-
- error = gfs2_trans_begin(sdp, rblocks,
- PAGE_CACHE_SIZE/sdp->sd_sb.sb_bsize);
- if (error)
- goto out_trans_fail;
-
- error = fallocate_chunk(inode, offset, max_bytes, mode);
- gfs2_trans_end(sdp);
-
- if (error)
- goto out_trans_fail;
-
- len -= max_bytes;
- offset += max_bytes;
- gfs2_inplace_release(ip);
- gfs2_quota_unlock(ip);
- gfs2_alloc_put(ip);
- }
- goto out_unlock;
-
-out_trans_fail:
- gfs2_inplace_release(ip);
-out_qunlock:
- gfs2_quota_unlock(ip);
-out_alloc_put:
- gfs2_alloc_put(ip);
-out_unlock:
- gfs2_glock_dq(&ip->i_gh);
-out_uninit:
- gfs2_holder_uninit(&ip->i_gh);
- return error;
-}
-
-
static int gfs2_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
u64 start, u64 len)
{
@@ -1562,7 +1305,6 @@ const struct inode_operations gfs2_file_iops = {
.getxattr = gfs2_getxattr,
.listxattr = gfs2_listxattr,
.removexattr = gfs2_removexattr,
- .fallocate = gfs2_fallocate,
.fiemap = gfs2_fiemap,
};
diff --git a/fs/hpfs/inode.c b/fs/hpfs/inode.c
index 56f0da1cfd10..1ae35baa539e 100644
--- a/fs/hpfs/inode.c
+++ b/fs/hpfs/inode.c
@@ -281,7 +281,7 @@ int hpfs_setattr(struct dentry *dentry, struct iattr *attr)
attr->ia_size != i_size_read(inode)) {
error = vmtruncate(inode, attr->ia_size);
if (error)
- return error;
+ goto out_unlock;
}
setattr_copy(inode, attr);
diff --git a/fs/internal.h b/fs/internal.h
index 12ccb86edef7..0663568b1247 100644
--- a/fs/internal.h
+++ b/fs/internal.h
@@ -70,8 +70,7 @@ extern void mnt_set_mountpoint(struct vfsmount *, struct dentry *,
extern void release_mounts(struct list_head *);
extern void umount_tree(struct vfsmount *, int, struct list_head *);
extern struct vfsmount *copy_tree(struct vfsmount *, struct dentry *, int);
-extern int do_add_mount(struct vfsmount *, struct path *, int);
-extern void mnt_clear_expiry(struct vfsmount *);
+extern int finish_automount(struct vfsmount *, struct path *);
extern void mnt_make_longterm(struct vfsmount *);
extern void mnt_make_shortterm(struct vfsmount *);
diff --git a/fs/ioctl.c b/fs/ioctl.c
index d6cc16476620..a59635e295fa 100644
--- a/fs/ioctl.c
+++ b/fs/ioctl.c
@@ -86,7 +86,7 @@ int fiemap_fill_next_extent(struct fiemap_extent_info *fieinfo, u64 logical,
u64 phys, u64 len, u32 flags)
{
struct fiemap_extent extent;
- struct fiemap_extent *dest = fieinfo->fi_extents_start;
+ struct fiemap_extent __user *dest = fieinfo->fi_extents_start;
/* only count the extents */
if (fieinfo->fi_extents_max == 0) {
@@ -173,6 +173,7 @@ static int fiemap_check_ranges(struct super_block *sb,
static int ioctl_fiemap(struct file *filp, unsigned long arg)
{
struct fiemap fiemap;
+ struct fiemap __user *ufiemap = (struct fiemap __user *) arg;
struct fiemap_extent_info fieinfo = { 0, };
struct inode *inode = filp->f_path.dentry->d_inode;
struct super_block *sb = inode->i_sb;
@@ -182,8 +183,7 @@ static int ioctl_fiemap(struct file *filp, unsigned long arg)
if (!inode->i_op->fiemap)
return -EOPNOTSUPP;
- if (copy_from_user(&fiemap, (struct fiemap __user *)arg,
- sizeof(struct fiemap)))
+ if (copy_from_user(&fiemap, ufiemap, sizeof(fiemap)))
return -EFAULT;
if (fiemap.fm_extent_count > FIEMAP_MAX_EXTENTS)
@@ -196,7 +196,7 @@ static int ioctl_fiemap(struct file *filp, unsigned long arg)
fieinfo.fi_flags = fiemap.fm_flags;
fieinfo.fi_extents_max = fiemap.fm_extent_count;
- fieinfo.fi_extents_start = (struct fiemap_extent *)(arg + sizeof(fiemap));
+ fieinfo.fi_extents_start = ufiemap->fm_extents;
if (fiemap.fm_extent_count != 0 &&
!access_ok(VERIFY_WRITE, fieinfo.fi_extents_start,
@@ -209,7 +209,7 @@ static int ioctl_fiemap(struct file *filp, unsigned long arg)
error = inode->i_op->fiemap(inode, &fieinfo, fiemap.fm_start, len);
fiemap.fm_flags = fieinfo.fi_flags;
fiemap.fm_mapped_extents = fieinfo.fi_extents_mapped;
- if (copy_to_user((char *)arg, &fiemap, sizeof(fiemap)))
+ if (copy_to_user(ufiemap, &fiemap, sizeof(fiemap)))
error = -EFAULT;
return error;
diff --git a/fs/jffs2/build.c b/fs/jffs2/build.c
index 85c6be2db02f..3005ec4520ad 100644
--- a/fs/jffs2/build.c
+++ b/fs/jffs2/build.c
@@ -336,14 +336,13 @@ int jffs2_do_mount_fs(struct jffs2_sb_info *c)
size = sizeof(struct jffs2_eraseblock) * c->nr_blocks;
#ifndef __ECOS
if (jffs2_blocks_use_vmalloc(c))
- c->blocks = vmalloc(size);
+ c->blocks = vzalloc(size);
else
#endif
- c->blocks = kmalloc(size, GFP_KERNEL);
+ c->blocks = kzalloc(size, GFP_KERNEL);
if (!c->blocks)
return -ENOMEM;
- memset(c->blocks, 0, size);
for (i=0; i<c->nr_blocks; i++) {
INIT_LIST_HEAD(&c->blocks[i].list);
c->blocks[i].offset = i * c->sector_size;
diff --git a/fs/jffs2/jffs2_fs_sb.h b/fs/jffs2/jffs2_fs_sb.h
index f864005de64c..0bc6a6c80a56 100644
--- a/fs/jffs2/jffs2_fs_sb.h
+++ b/fs/jffs2/jffs2_fs_sb.h
@@ -144,4 +144,4 @@ struct jffs2_sb_info {
void *os_priv;
};
-#endif /* _JFFS2_FB_SB */
+#endif /* _JFFS2_FS_SB */
diff --git a/fs/jffs2/xattr.c b/fs/jffs2/xattr.c
index 9b572ca40a49..4f9cc0482949 100644
--- a/fs/jffs2/xattr.c
+++ b/fs/jffs2/xattr.c
@@ -151,7 +151,7 @@ static int do_verify_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_dat
JFFS2_ERROR("node CRC failed at %#08x, read=%#08x, calc=%#08x\n",
offset, je32_to_cpu(rx.hdr_crc), crc);
xd->flags |= JFFS2_XFLAGS_INVALID;
- return EIO;
+ return -EIO;
}
totlen = PAD(sizeof(rx) + rx.name_len + 1 + je16_to_cpu(rx.value_len));
if (je16_to_cpu(rx.magic) != JFFS2_MAGIC_BITMASK
@@ -167,7 +167,7 @@ static int do_verify_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_dat
je32_to_cpu(rx.xid), xd->xid,
je32_to_cpu(rx.version), xd->version);
xd->flags |= JFFS2_XFLAGS_INVALID;
- return EIO;
+ return -EIO;
}
xd->xprefix = rx.xprefix;
xd->name_len = rx.name_len;
@@ -230,7 +230,7 @@ static int do_load_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datum
ref_offset(xd->node), xd->data_crc, crc);
kfree(data);
xd->flags |= JFFS2_XFLAGS_INVALID;
- return EIO;
+ return -EIO;
}
xd->flags |= JFFS2_XFLAGS_HOT;
@@ -268,7 +268,7 @@ static int load_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datum *x
if (xd->xname)
return 0;
if (xd->flags & JFFS2_XFLAGS_INVALID)
- return EIO;
+ return -EIO;
if (unlikely(is_xattr_datum_unchecked(c, xd)))
rc = do_verify_xattr_datum(c, xd);
if (!rc)
@@ -460,7 +460,7 @@ static int verify_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_ref *ref
if (crc != je32_to_cpu(rr.node_crc)) {
JFFS2_ERROR("node CRC failed at %#08x, read=%#08x, calc=%#08x\n",
offset, je32_to_cpu(rr.node_crc), crc);
- return EIO;
+ return -EIO;
}
if (je16_to_cpu(rr.magic) != JFFS2_MAGIC_BITMASK
|| je16_to_cpu(rr.nodetype) != JFFS2_NODETYPE_XREF
@@ -470,7 +470,7 @@ static int verify_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_ref *ref
offset, je16_to_cpu(rr.magic), JFFS2_MAGIC_BITMASK,
je16_to_cpu(rr.nodetype), JFFS2_NODETYPE_XREF,
je32_to_cpu(rr.totlen), PAD(sizeof(rr)));
- return EIO;
+ return -EIO;
}
ref->ino = je32_to_cpu(rr.ino);
ref->xid = je32_to_cpu(rr.xid);
diff --git a/fs/namei.c b/fs/namei.c
index 8f7b41a14882..b753192d8c3f 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -923,37 +923,13 @@ static int follow_automount(struct path *path, unsigned flags,
if (!mnt) /* mount collision */
return 0;
- /* The new mount record should have at least 2 refs to prevent it being
- * expired before we get a chance to add it
- */
- BUG_ON(mnt_get_count(mnt) < 2);
-
- if (mnt->mnt_sb == path->mnt->mnt_sb &&
- mnt->mnt_root == path->dentry) {
- mnt_clear_expiry(mnt);
- mntput(mnt);
- mntput(mnt);
- return -ELOOP;
- }
+ err = finish_automount(mnt, path);
- /* We need to add the mountpoint to the parent. The filesystem may
- * have placed it on an expiry list, and so we need to make sure it
- * won't be expired under us if do_add_mount() fails (do_add_mount()
- * will eat a reference unconditionally).
- */
- mntget(mnt);
- err = do_add_mount(mnt, path, path->mnt->mnt_flags | MNT_SHRINKABLE);
switch (err) {
case -EBUSY:
/* Someone else made a mount here whilst we were busy */
- err = 0;
- default:
- mnt_clear_expiry(mnt);
- mntput(mnt);
- mntput(mnt);
- return err;
+ return 0;
case 0:
- mntput(mnt);
dput(path->dentry);
if (*need_mntput)
mntput(path->mnt);
@@ -961,7 +937,10 @@ static int follow_automount(struct path *path, unsigned flags,
path->dentry = dget(mnt->mnt_root);
*need_mntput = true;
return 0;
+ default:
+ return err;
}
+
}
/*
diff --git a/fs/namespace.c b/fs/namespace.c
index 9f544f35ed34..7b0b95371696 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -1872,6 +1872,8 @@ out:
return err;
}
+static int do_add_mount(struct vfsmount *, struct path *, int);
+
/*
* create a new mount for userspace and request it to be added into the
* namespace's tree
@@ -1880,6 +1882,7 @@ static int do_new_mount(struct path *path, char *type, int flags,
int mnt_flags, char *name, void *data)
{
struct vfsmount *mnt;
+ int err;
if (!type)
return -EINVAL;
@@ -1892,14 +1895,47 @@ static int do_new_mount(struct path *path, char *type, int flags,
if (IS_ERR(mnt))
return PTR_ERR(mnt);
- return do_add_mount(mnt, path, mnt_flags);
+ err = do_add_mount(mnt, path, mnt_flags);
+ if (err)
+ mntput(mnt);
+ return err;
+}
+
+int finish_automount(struct vfsmount *m, struct path *path)
+{
+ int err;
+ /* The new mount record should have at least 2 refs to prevent it being
+ * expired before we get a chance to add it
+ */
+ BUG_ON(mnt_get_count(m) < 2);
+
+ if (m->mnt_sb == path->mnt->mnt_sb &&
+ m->mnt_root == path->dentry) {
+ err = -ELOOP;
+ goto fail;
+ }
+
+ err = do_add_mount(m, path, path->mnt->mnt_flags | MNT_SHRINKABLE);
+ if (!err)
+ return 0;
+fail:
+ /* remove m from any expiration list it may be on */
+ if (!list_empty(&m->mnt_expire)) {
+ down_write(&namespace_sem);
+ br_write_lock(vfsmount_lock);
+ list_del_init(&m->mnt_expire);
+ br_write_unlock(vfsmount_lock);
+ up_write(&namespace_sem);
+ }
+ mntput(m);
+ mntput(m);
+ return err;
}
/*
* add a mount into a namespace's mount tree
- * - this unconditionally eats one of the caller's references to newmnt.
*/
-int do_add_mount(struct vfsmount *newmnt, struct path *path, int mnt_flags)
+static int do_add_mount(struct vfsmount *newmnt, struct path *path, int mnt_flags)
{
int err;
@@ -1926,15 +1962,10 @@ int do_add_mount(struct vfsmount *newmnt, struct path *path, int mnt_flags)
goto unlock;
newmnt->mnt_flags = mnt_flags;
- if ((err = graft_tree(newmnt, path)))
- goto unlock;
-
- up_write(&namespace_sem);
- return 0;
+ err = graft_tree(newmnt, path);
unlock:
up_write(&namespace_sem);
- mntput(newmnt);
return err;
}
@@ -1956,20 +1987,6 @@ void mnt_set_expiry(struct vfsmount *mnt, struct list_head *expiry_list)
EXPORT_SYMBOL(mnt_set_expiry);
/*
- * Remove a vfsmount from any expiration list it may be on
- */
-void mnt_clear_expiry(struct vfsmount *mnt)
-{
- if (!list_empty(&mnt->mnt_expire)) {
- down_write(&namespace_sem);
- br_write_lock(vfsmount_lock);
- list_del_init(&mnt->mnt_expire);
- br_write_unlock(vfsmount_lock);
- up_write(&namespace_sem);
- }
-}
-
-/*
* process a list of expirable mountpoints with the intent of discarding any
* mountpoints that aren't in use and haven't been touched since last we came
* here
diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
index 63e3fca266e0..a6651956482e 100644
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -1989,20 +1989,20 @@ int ocfs2_change_file_space(struct file *file, unsigned int cmd,
return __ocfs2_change_file_space(file, inode, file->f_pos, cmd, sr, 0);
}
-static long ocfs2_fallocate(struct inode *inode, int mode, loff_t offset,
+static long ocfs2_fallocate(struct file *file, int mode, loff_t offset,
loff_t len)
{
+ struct inode *inode = file->f_path.dentry->d_inode;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
struct ocfs2_space_resv sr;
int change_size = 1;
int cmd = OCFS2_IOC_RESVSP64;
+ if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE))
+ return -EOPNOTSUPP;
if (!ocfs2_writes_unwritten_extents(osb))
return -EOPNOTSUPP;
- if (S_ISDIR(inode->i_mode))
- return -ENODEV;
-
if (mode & FALLOC_FL_KEEP_SIZE)
change_size = 0;
@@ -2610,7 +2610,6 @@ const struct inode_operations ocfs2_file_iops = {
.getxattr = generic_getxattr,
.listxattr = ocfs2_listxattr,
.removexattr = generic_removexattr,
- .fallocate = ocfs2_fallocate,
.fiemap = ocfs2_fiemap,
};
@@ -2642,6 +2641,7 @@ const struct file_operations ocfs2_fops = {
.flock = ocfs2_flock,
.splice_read = ocfs2_file_splice_read,
.splice_write = ocfs2_file_splice_write,
+ .fallocate = ocfs2_fallocate,
};
const struct file_operations ocfs2_dops = {
diff --git a/fs/open.c b/fs/open.c
index 5b6ef7e2859e..e52389e1f05b 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -255,10 +255,10 @@ int do_fallocate(struct file *file, int mode, loff_t offset, loff_t len)
if (((offset + len) > inode->i_sb->s_maxbytes) || ((offset + len) < 0))
return -EFBIG;
- if (!inode->i_op->fallocate)
+ if (!file->f_op->fallocate)
return -EOPNOTSUPP;
- return inode->i_op->fallocate(inode, mode, offset, len);
+ return file->f_op->fallocate(file, mode, offset, len);
}
SYSCALL_DEFINE(fallocate)(int fd, int mode, loff_t offset, loff_t len)
diff --git a/fs/xfs/linux-2.6/xfs_file.c b/fs/xfs/linux-2.6/xfs_file.c
index ef51eb43e137..a55c1b46b219 100644
--- a/fs/xfs/linux-2.6/xfs_file.c
+++ b/fs/xfs/linux-2.6/xfs_file.c
@@ -37,6 +37,7 @@
#include "xfs_trace.h"
#include <linux/dcache.h>
+#include <linux/falloc.h>
static const struct vm_operations_struct xfs_file_vm_ops;
@@ -882,6 +883,60 @@ out_unlock:
return ret;
}
+STATIC long
+xfs_file_fallocate(
+ struct file *file,
+ int mode,
+ loff_t offset,
+ loff_t len)
+{
+ struct inode *inode = file->f_path.dentry->d_inode;
+ long error;
+ loff_t new_size = 0;
+ xfs_flock64_t bf;
+ xfs_inode_t *ip = XFS_I(inode);
+ int cmd = XFS_IOC_RESVSP;
+
+ if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE))
+ return -EOPNOTSUPP;
+
+ bf.l_whence = 0;
+ bf.l_start = offset;
+ bf.l_len = len;
+
+ xfs_ilock(ip, XFS_IOLOCK_EXCL);
+
+ if (mode & FALLOC_FL_PUNCH_HOLE)
+ cmd = XFS_IOC_UNRESVSP;
+
+ /* check the new inode size is valid before allocating */
+ if (!(mode & FALLOC_FL_KEEP_SIZE) &&
+ offset + len > i_size_read(inode)) {
+ new_size = offset + len;
+ error = inode_newsize_ok(inode, new_size);
+ if (error)
+ goto out_unlock;
+ }
+
+ error = -xfs_change_file_space(ip, cmd, &bf, 0, XFS_ATTR_NOLOCK);
+ if (error)
+ goto out_unlock;
+
+ /* Change file size if needed */
+ if (new_size) {
+ struct iattr iattr;
+
+ iattr.ia_valid = ATTR_SIZE;
+ iattr.ia_size = new_size;
+ error = -xfs_setattr(ip, &iattr, XFS_ATTR_NOLOCK);
+ }
+
+out_unlock:
+ xfs_iunlock(ip, XFS_IOLOCK_EXCL);
+ return error;
+}
+
+
STATIC int
xfs_file_open(
struct inode *inode,
@@ -1000,6 +1055,7 @@ const struct file_operations xfs_file_operations = {
.open = xfs_file_open,
.release = xfs_file_release,
.fsync = xfs_file_fsync,
+ .fallocate = xfs_file_fallocate,
};
const struct file_operations xfs_dir_file_operations = {
diff --git a/fs/xfs/linux-2.6/xfs_iops.c b/fs/xfs/linux-2.6/xfs_iops.c
index da54403633b6..bd5727852fd6 100644
--- a/fs/xfs/linux-2.6/xfs_iops.c
+++ b/fs/xfs/linux-2.6/xfs_iops.c
@@ -46,7 +46,6 @@
#include <linux/namei.h>
#include <linux/posix_acl.h>
#include <linux/security.h>
-#include <linux/falloc.h>
#include <linux/fiemap.h>
#include <linux/slab.h>
@@ -505,61 +504,6 @@ xfs_vn_setattr(
return -xfs_setattr(XFS_I(dentry->d_inode), iattr, 0);
}
-STATIC long
-xfs_vn_fallocate(
- struct inode *inode,
- int mode,
- loff_t offset,
- loff_t len)
-{
- long error;
- loff_t new_size = 0;
- xfs_flock64_t bf;
- xfs_inode_t *ip = XFS_I(inode);
- int cmd = XFS_IOC_RESVSP;
-
- /* preallocation on directories not yet supported */
- error = -ENODEV;
- if (S_ISDIR(inode->i_mode))
- goto out_error;
-
- bf.l_whence = 0;
- bf.l_start = offset;
- bf.l_len = len;
-
- xfs_ilock(ip, XFS_IOLOCK_EXCL);
-
- if (mode & FALLOC_FL_PUNCH_HOLE)
- cmd = XFS_IOC_UNRESVSP;
-
- /* check the new inode size is valid before allocating */
- if (!(mode & FALLOC_FL_KEEP_SIZE) &&
- offset + len > i_size_read(inode)) {
- new_size = offset + len;
- error = inode_newsize_ok(inode, new_size);
- if (error)
- goto out_unlock;
- }
-
- error = -xfs_change_file_space(ip, cmd, &bf, 0, XFS_ATTR_NOLOCK);
- if (error)
- goto out_unlock;
-
- /* Change file size if needed */
- if (new_size) {
- struct iattr iattr;
-
- iattr.ia_valid = ATTR_SIZE;
- iattr.ia_size = new_size;
- error = -xfs_setattr(ip, &iattr, XFS_ATTR_NOLOCK);
- }
-
-out_unlock:
- xfs_iunlock(ip, XFS_IOLOCK_EXCL);
-out_error:
- return error;
-}
-
#define XFS_FIEMAP_FLAGS (FIEMAP_FLAG_SYNC|FIEMAP_FLAG_XATTR)
/*
@@ -653,7 +597,6 @@ static const struct inode_operations xfs_inode_operations = {
.getxattr = generic_getxattr,
.removexattr = generic_removexattr,
.listxattr = xfs_vn_listxattr,
- .fallocate = xfs_vn_fallocate,
.fiemap = xfs_vn_fiemap,
};
diff --git a/fs/xfs/support/debug.c b/fs/xfs/support/debug.c
index e6cf955ec0fc..0df88897ef84 100644
--- a/fs/xfs/support/debug.c
+++ b/fs/xfs/support/debug.c
@@ -75,11 +75,11 @@ xfs_cmn_err(
{
struct va_format vaf;
va_list args;
- int panic = 0;
+ int do_panic = 0;
if (xfs_panic_mask && (xfs_panic_mask & panic_tag)) {
printk(KERN_ALERT "XFS: Transforming an alert into a BUG.");
- panic = 1;
+ do_panic = 1;
}
va_start(args, fmt);
@@ -89,7 +89,7 @@ xfs_cmn_err(
printk(KERN_ALERT "Filesystem %s: %pV", mp->m_fsname, &vaf);
va_end(args);
- BUG_ON(panic);
+ BUG_ON(do_panic);
}
void
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.