[PATCH 01/17] btrfs: update an stale comment on btrfs_submit_bio_hook()
From: Qu Wenruo <hidden>
Date: 2021-12-01 05:18:19
Also in:
dm-devel, linux-block
Subsystem:
btrfs file system, filesystems (vfs and infrastructure), the rest · Maintainers:
Chris Mason, David Sterba, Alexander Viro, Christian Brauner, Linus Torvalds
This function is renamed to btrfs_submit_data_bio(), update the comment and add extra reason why it doesn't completely follow the same rule in btrfs_submit_data_bio(). Signed-off-by: Qu Wenruo <redacted> --- fs/btrfs/inode.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 504cf090fc88..6079d30f83e8 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c@@ -8202,7 +8202,13 @@ static inline blk_status_t btrfs_submit_dio_bio(struct bio *bio, bool write = btrfs_op(bio) == BTRFS_MAP_WRITE; blk_status_t ret; - /* Check btrfs_submit_bio_hook() for rules about async submit. */ + /* + * Check btrfs_submit_data_bio() for rules about async submit. + * + * The only exception is for RAID56, when there are more than one bios + * to submit, async submit seems to make it harder to collect csums + * for the full stripe. + */ if (async_submit) async_submit = !atomic_read(&BTRFS_I(inode)->sync_writers);
--
2.34.1