From: Ming Lei <ming.lei@xxxxxxxxxx> To simplify further changes allow for double calling blk_mq_free_rqs on a queue. Signed-off-by: Ming Lei <ming.lei@xxxxxxxxxx> [hch: split out from a larger patch] Signed-off-by: Christoph Hellwig <hch@xxxxxx> Reviewed-by: Bart Van Assche <bvanassche@xxxxxxx> Reviewed-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx> --- block/blk-mq.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/block/blk-mq.c b/block/blk-mq.c index ab4b646551334..6fd0b0f652514 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -3070,6 +3070,9 @@ void blk_mq_free_rqs(struct blk_mq_tag_set *set, struct blk_mq_tags *tags, struct blk_mq_tags *drv_tags; struct page *page; + if (list_empty(&tags->page_list)) + return; + if (blk_mq_is_shared_tags(set->flags)) drv_tags = set->shared_tags; else -- 2.30.2
