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-rw-r--r--block/blk-mq-sched.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/block/blk-mq-sched.c b/block/blk-mq-sched.c
index 9f025289da63..191bf82d185e 100644
--- a/block/blk-mq-sched.c
+++ b/block/blk-mq-sched.c
@@ -150,6 +150,8 @@ static bool blk_mq_attempt_merge(struct request_queue *q,
struct request *rq;
int checked = 8;
+ lockdep_assert_held(&ctx->lock);
+
list_for_each_entry_reverse(rq, &ctx->rq_list, queuelist) {
bool merged = false;