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blk-iolatency: flush enable_work after going offline

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blkcg_iolatency_exit() flushes enable_work before it deactivates the
policy, but iolatency_pd_offline() schedules it again for the last group
with a target, so the blk_iolatency is freed with the work queued. Flush
it after the deactivation.

Fixes: 8a177a36da ("blk-iolatency: Fix inflight count imbalances and IO hangs on offline")
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Acked-by: Tejun Heo <tj@kernel.org>
Link: https://patch.msgid.link/20261028164415.1262013-24-axboe@kernel.dk
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Josef Bacik 2026-10-28 10:41:26 -06:00 committed by Jens Axboe
parent 4def096314
commit 020f61242d
1 changed files with 2 additions and 1 deletions
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3
block/blk-iolatency.c
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@ -637,8 +637,9 @@ static void blkcg_iolatency_exit(struct rq_qos *rqos)
struct blk_iolatency *blkiolat = BLKIOLATENCY(rqos);
timer_shutdown_sync(&blkiolat->timer);
flush_work(&blkiolat->enable_work);
blkcg_deactivate_policy(rqos->disk, &blkcg_policy_iolatency);
/* iolatency_pd_offline() schedules it for the last group with a target */
flush_work(&blkiolat->enable_work);
kfree(blkiolat);
}