diff options
| author |   Dennis Zhou (Facebook) <dennisszhou@gmail.com> | 2018-09-11 14:41:33 -0400 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2018-09-21 20:29:13 -0600 |
| commit | c839e7a03f92bafd71fd145b470dcdc7f43f2d4c (patch) | |
| tree | 2327729d2f67268d179beb22f4ef9db44b156af1 /include/linux/blk-cgroup.h | |
| parent | blkcg: associate writeback bios with a blkg (diff) | |
| download | wireguard-linux-c839e7a03f92bafd71fd145b470dcdc7f43f2d4c.tar.xz wireguard-linux-c839e7a03f92bafd71fd145b470dcdc7f43f2d4c.zip | |
blkcg: remove bio->bi_css and instead use bio->bi_blkg
Prior patches ensured that all bios are now associated with some blkg.
This now makes bio->bi_css unnecessary as blkg maintains a reference to
the blkcg already.
This patch removes the field bi_css and transfers corresponding uses to
access via bi_blkg.
Signed-off-by: Dennis Zhou <dennisszhou@gmail.com>
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/linux/blk-cgroup.h')
| -rw-r--r-- | include/linux/blk-cgroup.h | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/include/linux/blk-cgroup.h b/include/linux/blk-cgroup.h index a6b6e741a75e..c41cfcc2b4d8 100644 --- a/include/linux/blk-cgroup.h +++ b/include/linux/blk-cgroup.h @@ -308,8 +308,8 @@ static inline struct blkcg *css_to_blkcg(struct cgroup_subsys_state *css) */ static inline struct blkcg *__bio_blkcg(struct bio *bio) { - if (bio && bio->bi_css) - return css_to_blkcg(bio->bi_css); + if (bio && bio->bi_blkg) + return bio->bi_blkg->blkcg; return css_to_blkcg(blkcg_css()); } @@ -323,8 +323,8 @@ static inline struct blkcg *__bio_blkcg(struct bio *bio) */ static inline struct blkcg *bio_blkcg(struct bio *bio) { - if (bio && bio->bi_css) - return css_to_blkcg(bio->bi_css); + if (bio && bio->bi_blkg) + return bio->bi_blkg->blkcg; return NULL; } |