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-rw-r--r--block/blk-mq.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 2a1a653a8054..d8534107bb6f 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -1259,6 +1259,14 @@ bool blk_mq_dispatch_rq_list(struct request_queue *q, struct list_head *list,
if (!list_empty(list)) {
bool needs_restart;
+ /*
+ * If we didn't flush the entire list, we could have told
+ * the driver there was more coming, but that turned out to
+ * be a lie.
+ */
+ if (q->mq_ops->commit_rqs)
+ q->mq_ops->commit_rqs(hctx);
+
spin_lock(&hctx->lock);
list_splice_init(list, &hctx->dispatch);
spin_unlock(&hctx->lock);
@@ -1865,6 +1873,14 @@ void blk_mq_try_issue_list_directly(struct blk_mq_hw_ctx *hctx,
blk_mq_end_request(rq, ret);
}
}
+
+ /*
+ * If we didn't flush the entire list, we could have told
+ * the driver there was more coming, but that turned out to
+ * be a lie.
+ */
+ if (!list_empty(list) && hctx->queue->mq_ops->commit_rqs)
+ hctx->queue->mq_ops->commit_rqs(hctx);
}
static void blk_add_rq_to_plug(struct blk_plug *plug, struct request *rq)