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blk-cgroup: move rcu locking from blkcg_bio_issue_check to blk_throtl_bio

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The only thing in blkcg_bio_issue_check that needs to be under
rcu_read_lock is blk_throtl_bio, so move the locking there.

Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2020-06-27 09:31:57 +02:00 • committed by Jens Axboe
parent 7582f30cc9
commit 93b8063804
2 changed files with 2 additions and 3 deletions
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2
include/linux/blk-cgroup.h
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@ -546,7 +546,6 @@ static inline bool blkcg_bio_issue_check(struct request_queue *q,
struct blkcg_gq *blkg = bio->bi_blkg;
bool throtl = false;
rcu_read_lock();
throtl = blk_throtl_bio(q, blkg, bio);
if (!throtl) {
struct blkg_iostat_set *bis;
@ -582,7 +581,6 @@ static inline bool blkcg_bio_issue_check(struct request_queue *q,
blkcg_bio_issue_init(bio);
rcu_read_unlock();
return !throtl;
}