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-rw-r--r--block/blk-mq.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 97ebb84..1a41d7a 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -152,6 +152,16 @@ void blk_mq_unfreeze_queue(struct request_queue *q)
}
EXPORT_SYMBOL_GPL(blk_mq_unfreeze_queue);
+void blk_mq_wake_waiters(struct request_queue *q)
+{
+ struct blk_mq_hw_ctx *hctx;
+ unsigned int i;
+
+ queue_for_each_hw_ctx(q, hctx, i)
+ if (blk_mq_hw_queue_mapped(hctx))
+ blk_mq_tag_wakeup_all(hctx->tags, true);
+}
+
bool blk_mq_can_queue(struct blk_mq_hw_ctx *hctx)
{
return blk_mq_has_free_tags(hctx->tags);
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