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-rw-r--r--block/blk-core.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/block/blk-core.c b/block/blk-core.c
index 2bbf08cd2900..5131993b23a1 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -1575,6 +1575,9 @@ bool bio_attempt_front_merge(struct request_queue *q, struct request *req,
* @q: request_queue new bio is being queued at
* @bio: new bio being queued
* @request_count: out parameter for number of traversed plugged requests
+ * @same_queue_rq: pointer to &struct request that gets filled in when
+ * another request associated with @q is found on the plug list
+ * (optional, may be %NULL)
*
* Determine whether @bio being queued on @q can be merged with a request
* on %current's plugged list. Returns %true if merge was successful,