[dm-devel] [PATCH] block: remove redundant blk-cgroup init from __bio_clone

[Mike Snitzer]

When bio_{alloc,init}_clone are passed a bdev, bio_init() will call
bio_associate_blkg() so the __bio_clone() work to initialize blkcg
isn't needed.

Signed-off-by: Mike Snitzer <snitzer at kernel.org>
---
 block/bio.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/block/bio.c b/block/bio.c
index 7892f1108ca6..6980f1b4b0f4 100644
--- a/block/bio.c
+++ b/block/bio.c
@@ -778,9 +778,6 @@ static int __bio_clone(struct bio *bio, struct bio *bio_src, gfp_t gfp)
 	bio->bi_ioprio = bio_src->bi_ioprio;
 	bio->bi_iter = bio_src->bi_iter;
 
-	bio_clone_blkg_association(bio, bio_src);
-	blkcg_bio_issue_init(bio);
-
 	if (bio_crypt_clone(bio, bio_src, gfp) < 0)
 		return -ENOMEM;
 	if (bio_integrity(bio_src) &&
-- 
2.30.0