On 9/13/21 5:12 PM, John Garry wrote:
The original code in commit 24d2f90309b23 ("blk-mq: split out tag initialization, support shared tags") would check tags->rqs is non-NULL and then dereference tags->rqs[]. Then in commit 2af8cbe30531 ("blk-mq: split tag ->rqs[] into two"), we started to dereference tags->static_rqs[], but continued to check non-NULL tags->rqs. Check tags->static_rqs as non-NULL instead, which is more logical. Signed-off-by: John Garry <john.garry@xxxxxxxxxx> Reviewed-by: Ming Lei <ming.lei@xxxxxxxxxx> --- block/blk-mq.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/block/blk-mq.c b/block/blk-mq.c index 108a352051be..2316ff27c1f5 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -2340,7 +2340,7 @@ void blk_mq_free_rqs(struct blk_mq_tag_set *set, struct blk_mq_tags *tags, { struct page *page;- if (tags->rqs && set->ops->exit_request) {+ if (tags->static_rqs && set->ops->exit_request) { int i;for (i = 0; i < tags->nr_tags; i++) {
Reviewed-by: Hannes Reinecke <hare@xxxxxxx> Cheers, Hannes -- Dr. Hannes Reinecke Kernel Storage Architect hare@xxxxxxx +49 911 74053 688 SUSE Software Solutions GmbH, Maxfeldstr. 5, 90409 Nürnberg HRB 36809 (AG Nürnberg), Geschäftsführer: Felix Imendörffer
