From 05f09400d2050a61f8c4f3ae41216652db52dde4 Mon Sep 17 00:00:00 2001 From: Ming Lei Date: Fri, 18 Feb 2022 09:17:17 +0100 Subject: [PATCH] blk-mq: handle already freed tags gracefully in blk_mq_free_rqs To simplify further changes allow for double calling blk_mq_free_rqs on a queue. Signed-off-by: Ming Lei [hch: split out from a larger patch] Signed-off-by: Christoph Hellwig --- block/blk-mq.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/block/blk-mq.c b/block/blk-mq.c index 2204affde9b0..62526bcea1e1 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -3065,6 +3065,9 @@ 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 -- 2.50.1