diff options
| author | Jens Axboe <axboe@kernel.dk> | 2023-03-07 09:40:28 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2023-04-03 07:14:20 -0600 |
| commit | d8aeb44a9ae324c4b823689fabb30b6621d93c88 (patch) | |
| tree | 8ff9a7ae757b4621914fb656cd77379d8f061e32 /fs/ext4/file.c | |
| parent | 7e364e56293bb98cae1b55fd835f5991c4e96e7d (diff) | |
| download | linux-d8aeb44a9ae324c4b823689fabb30b6621d93c88.tar.gz | |
fs: add FMODE_DIO_PARALLEL_WRITE flag
Some filesystems support multiple threads writing to the same file with
O_DIRECT without requiring exclusive access to it. io_uring can use this
hint to avoid serializing dio writes to this inode, instead allowing them
to run in parallel.
XFS and ext4 both fall into this category, so set the flag for both of
them.
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'fs/ext4/file.c')
| -rw-r--r-- | fs/ext4/file.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/ext4/file.c b/fs/ext4/file.c index 0b8b4499e5ca18..d101b3b0c7dad8 100644 --- a/fs/ext4/file.c +++ b/fs/ext4/file.c @@ -899,7 +899,8 @@ static int ext4_file_open(struct inode *inode, struct file *filp) return ret; } - filp->f_mode |= FMODE_NOWAIT | FMODE_BUF_RASYNC; + filp->f_mode |= FMODE_NOWAIT | FMODE_BUF_RASYNC | + FMODE_DIO_PARALLEL_WRITE; return dquot_file_open(inode, filp); } |