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| author | Jens Axboe <axboe@kernel.dk> | 2021-11-26 09:53:23 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2021-11-26 09:53:23 -0700 |
| commit | 98b26a0e766724957b48301e3a6f7093a142d54b (patch) | |
| tree | 87754c43f23723f833af82b557c1ddbae8493314 /block | |
| parent | e30028ace8459ea096b093fc204f0d5e8fc3b6ae (diff) | |
| download | linux-98b26a0e766724957b48301e3a6f7093a142d54b.tar.gz linux-98b26a0e766724957b48301e3a6f7093a142d54b.tar.bz2 linux-98b26a0e766724957b48301e3a6f7093a142d54b.zip | |
block: call rq_qos_done() before ref check in batch completions
We need to call rq_qos_done() regardless of whether or not we're freeing
the request or not, as the reference count doesn't cover the IO completion
tracking.
Fixes: f794f3351f26 ("block: add support for blk_mq_end_request_batch()")
Reported-by: Shinichiro Kawasaki <shinichiro.kawasaki@wdc.com>
Reported-by: Kenneth R. Crudup <kenny@panix.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-mq.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c index 8799fa73ef34..8874a63ae952 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -860,13 +860,14 @@ void blk_mq_end_request_batch(struct io_comp_batch *iob) if (iob->need_ts) __blk_mq_end_request_acct(rq, now); + rq_qos_done(rq->q, rq); + WRITE_ONCE(rq->state, MQ_RQ_IDLE); if (!refcount_dec_and_test(&rq->ref)) continue; blk_crypto_free_request(rq); blk_pm_mark_last_busy(rq); - rq_qos_done(rq->q, rq); if (nr_tags == TAG_COMP_BATCH || cur_hctx != rq->mq_hctx) { if (cur_hctx) |