blk-mq-sched: don't add flushes to the head of requeue queue
If we are currently out of driver tags, we don't want to add a
new flush (without a tag) to the head of the requeue list. We
want to add it to the back, behind the others that are
potentially also waiting for a tag.
Signed-off-by: Jens Axboe <axboe@fb.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
diff --git a/block/blk-mq-sched.c b/block/blk-mq-sched.c
index 97fe904..4ee7cb0 100644
--- a/block/blk-mq-sched.c
+++ b/block/blk-mq-sched.c
@@ -351,7 +351,7 @@ static void blk_mq_sched_insert_flush(struct blk_mq_hw_ctx *hctx,
blk_insert_flush(rq);
blk_mq_run_hw_queue(hctx, true);
} else
- blk_mq_add_to_requeue_list(rq, true, true);
+ blk_mq_add_to_requeue_list(rq, false, true);
}
void blk_mq_sched_insert_request(struct request *rq, bool at_head,
