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![Omar Sandoval](https://secure.gravatar.com/avatar/956f430be70cdf1133f865273ba82798.jpg?s=96&d=mm)
Omar Sandoval committed f50cb7aff96
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>