diff options
| author | Omar Sandoval <osandov@fb.com> | 2019-08-15 14:04:03 -0700 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2019-09-09 14:59:17 +0200 |
| commit | f50cb7aff9645998b3269eac903a5e01cd6ba689 (patch) | |
| tree | 34d4341ea2465a68e03ffe87c5ae6597b5c70be2 /fs/btrfs | |
| parent | c09767a8960ca0500fb636bf73686723337debf4 (diff) | |
| download | linux-f50cb7aff9645998b3269eac903a5e01cd6ba689.tar.bz2 | |
btrfs: treat RWF_{,D}SYNC writes as sync for CRCs
The VFS indicates a synchronous write to ->write_iter() via
iocb->ki_flags. The IOCB_{,D}SYNC flags may be set based on the file
(see iocb_flags()) or the RWF_* flags passed to a syscall like
pwritev2() (see kiocb_set_rw_flags()).
However, in btrfs_file_write_iter(), we're checking if a write is
synchronous based only on the file; we use this to decide when to bump
the sync_writers counter and thus do CRCs synchronously. Make sure we do
this for all synchronous writes as determined by the VFS.
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Omar Sandoval <osandov@fb.com>
Reviewed-by: David Sterba <dsterba@suse.com>
[ add const ]
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs')
| -rw-r--r-- | fs/btrfs/file.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index 25df5b03b591..702c30a28a43 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -1882,7 +1882,7 @@ static ssize_t btrfs_file_write_iter(struct kiocb *iocb, u64 start_pos; u64 end_pos; ssize_t num_written = 0; - bool sync = (file->f_flags & O_DSYNC) || IS_SYNC(file->f_mapping->host); + const bool sync = iocb->ki_flags & IOCB_DSYNC; ssize_t err; loff_t pos; size_t count; |