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authorDennis Zhou (Facebook) <dennisszhou@gmail.com>2018-09-11 21:41:33 +0300
committerJens Axboe <axboe@kernel.dk>2018-09-22 05:29:13 +0300
commitc839e7a03f92bafd71fd145b470dcdc7f43f2d4c (patch)
tree2327729d2f67268d179beb22f4ef9db44b156af1 /include/linux/blk-cgroup.h
parentbdc2491708c47601603918a9a20acddef6e1d814 (diff)
downloadlinux-c839e7a03f92bafd71fd145b470dcdc7f43f2d4c.tar.xz
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.h8
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;
}