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| author |   Matthew Wilcox <matthew.r.wilcox@intel.com> | 2015-02-16 15:58:56 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2015-02-16 17:56:03 -0800 |
| commit | d475c6346a38aef3058eba96867bfa726a3cc940 (patch) | |
| tree | 4d69d0f50a4a8e649a751dca8f710485848c0249 /include | |
| parent | vfs,ext2: introduce IS_DAX(inode) (diff) | |
| download | linux-dev-d475c6346a38aef3058eba96867bfa726a3cc940.tar.xz linux-dev-d475c6346a38aef3058eba96867bfa726a3cc940.zip | |
dax,ext2: replace XIP read and write with DAX I/O
Use the generic AIO infrastructure instead of custom read and write
methods. In addition to giving us support for AIO, this adds the missing
locking between read() and truncate().
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: Andreas Dilger <andreas.dilger@intel.com>
Cc: Boaz Harrosh <boaz@plexistor.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/fs.h | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h index fb373bb5cf03..241c3c030fb5 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2587,12 +2587,11 @@ 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); + #ifdef CONFIG_FS_XIP -extern ssize_t xip_file_read(struct file *filp, char __user *buf, size_t len, - loff_t *ppos); extern int xip_file_mmap(struct file * file, struct vm_area_struct * vma); -extern ssize_t xip_file_write(struct file *filp, const char __user *buf, - size_t len, loff_t *ppos); extern int xip_truncate_page(struct address_space *mapping, loff_t from); #else static inline int xip_truncate_page(struct address_space *mapping, loff_t from) @@ -2756,6 +2755,11 @@ extern int generic_show_options(struct seq_file *m, struct dentry *root); extern void save_mount_options(struct super_block *sb, char *options); extern void replace_mount_options(struct super_block *sb, char *options); +static inline bool io_is_direct(struct file *filp) +{ + return (filp->f_flags & O_DIRECT) || IS_DAX(file_inode(filp)); +} + static inline ino_t parent_ino(struct dentry *dentry) { ino_t res; |