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blk-mq: Change rqs check in blk_mq_free_rqs() 

The original code in commit 24d2f90309 ("blk-mq: split out tag
initialization, support shared tags") would check tags->rqs is non-NULL and
then dereference tags->rqs[].

Then in commit 2af8cbe305 ("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@huawei.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Link: https://lore.kernel.org/r/1633429419-228500-2-git-send-email-john.garry@huawei.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
John Garry 2021-10-05 18:23:26 +08:00 committed by Jens Axboe
parent 8a3ee6778e
commit 65de57bb2e
1 changed files with 1 additions and 1 deletions
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2
block/blk-mq.c
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@ -2349,7 +2349,7 @@ 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++) {