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block: move initialization of q->blkg_list into blkcg_init_queue 

q->blkg_list is only used by blkcg code, so move it into
blkcg_init_queue.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20220211101149.2368042-3-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Ming Lei 2022-02-11 18:11:48 +08:00 committed by Jens Axboe
parent 0e51e2ab49
commit 472e4314c0
2 changed files with 2 additions and 3 deletions
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2
block/blk-cgroup.c
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@ -1175,6 +1175,8 @@ int blkcg_init_queue(struct request_queue *q)
bool preloaded;
int ret;
INIT_LIST_HEAD(&q->blkg_list);
new_blkg = blkg_alloc(&blkcg_root, q, GFP_KERNEL);
if (!new_blkg)
return -ENOMEM;

3
block/blk-core.c
View File

@ -476,9 +476,6 @@ struct request_queue *blk_alloc_queue(int node_id, bool alloc_srcu)
timer_setup(&q->timeout, blk_rq_timed_out_timer, 0);
INIT_WORK(&q->timeout_work, blk_timeout_work);
INIT_LIST_HEAD(&q->icq_list);
#ifdef CONFIG_BLK_CGROUP
INIT_LIST_HEAD(&q->blkg_list);
#endif
kobject_init(&q->kobj, &blk_queue_ktype);