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Diffstat (limited to 'block/blk-flush.c')
-rw-r--r--block/blk-flush.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/block/blk-flush.c b/block/blk-flush.c
index 6e1543c10493..53abb5c73d99 100644
--- a/block/blk-flush.c
+++ b/block/blk-flush.c
@@ -308,9 +308,16 @@ static void blk_kick_flush(struct request_queue *q, struct blk_flush_queue *fq,
 	flush_rq->mq_ctx = first_rq->mq_ctx;
 	flush_rq->mq_hctx = first_rq->mq_hctx;
 
-	if (!q->elevator)
+	if (!q->elevator) {
 		flush_rq->tag = first_rq->tag;
-	else
+
+		/*
+		 * We borrow data request's driver tag, so have to mark
+		 * this flush request as INFLIGHT for avoiding double
+		 * account of this driver tag
+		 */
+		flush_rq->rq_flags |= RQF_MQ_INFLIGHT;
+	} else
 		flush_rq->internal_tag = first_rq->internal_tag;
 
 	flush_rq->cmd_flags = REQ_OP_FLUSH | REQ_PREFLUSH;