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| author | Jens Axboe <axboe@kernel.dk> | 2018-11-28 03:07:17 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2018-11-28 16:29:23 +0300 |
| commit | 4711b57317f0ff5ca9fbd5e2df6c73b2c07ddc53 (patch) | |
| tree | f3e23d67110eaff30ca87ccdaa90c1c89672729e /block/blk-mq.c | |
| parent | a11f6ca9aef989b56cd31ff4ee2af4fb31a172ec (diff) | |
| download | linux-4711b57317f0ff5ca9fbd5e2df6c73b2c07ddc53.tar.xz | |
blk-mq: fix failure to decrement plug count on single rq removal
If we yank a 'same_queue_rq' request off the plug list, we should
also decrement the cached request count.
Fixes: 5f0ed774ed29 ("block: sum requests in the plug structure")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-mq.c')
| -rw-r--r-- | block/blk-mq.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c index 7b7dff85cf6c..a82830f39933 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -1946,8 +1946,10 @@ static blk_qc_t blk_mq_make_request(struct request_queue *q, struct bio *bio) */ if (list_empty(&plug->mq_list)) same_queue_rq = NULL; - if (same_queue_rq) + if (same_queue_rq) { list_del_init(&same_queue_rq->queuelist); + plug->rq_count--; + } list_add_tail(&rq->queuelist, &plug->mq_list); plug->rq_count++; |