diff options
Diffstat (limited to 'block/blk-mq.c')
| -rw-r--r-- | block/blk-mq.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c index 8070b6c10e8d..33292c01875d 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -3112,8 +3112,11 @@ static void blk_mq_clear_rq_mapping(struct blk_mq_tags *drv_tags, struct page *page; unsigned long flags; - /* There is no need to clear a driver tags own mapping */ - if (drv_tags == tags) + /* + * There is no need to clear mapping if driver tags is not initialized + * or the mapping belongs to the driver tags. + */ + if (!drv_tags || drv_tags == tags) return; list_for_each_entry(page, &tags->page_list, lru) { |