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| author | Josef Bacik <josef@toxicpanda.com> | 2018-07-31 12:39:03 -0400 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2018-08-01 09:16:03 -0600 |
| commit | cc7ecc258562b065ef638c4b45e20953d57fb564 (patch) | |
| tree | ede12ab4add1b486c0f34eb925cfca76853a4faa /block | |
| parent | 52a1199ccd426ad583ade4eb678b3b5846c58f43 (diff) | |
| download | linux-0-day-cc7ecc258562b065ef638c4b45e20953d57fb564.tar.gz linux-0-day-cc7ecc258562b065ef638c4b45e20953d57fb564.tar.xz | |
blk-cgroup: hold the queue ref during throttling
The blkg lifetime is protected by the queue lifetime, so we need to put
the queue _after_ we're done using the blkg.
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-cgroup.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c index 1942357d7165d..694595b29b8fd 100644 --- a/block/blk-cgroup.c +++ b/block/blk-cgroup.c @@ -1759,10 +1759,10 @@ void blkcg_maybe_throttle_current(void) if (!blkg) goto out; rcu_read_unlock(); - blk_put_queue(q); blkcg_maybe_throttle_blkg(blkg, use_memdelay); blkg_put(blkg); + blk_put_queue(q); return; out: rcu_read_unlock(); |