Commit 216889aa authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Jens Axboe
Browse files

blk-cgroup: move blk_cgroup_congested out line 



There is no urgent need to inline this function, so move it out of line.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Acked-by: default avatarTejun Heo <tj@kernel.org>
Link: https://lore.kernel.org/r/20220420042723.1010598-6-hch@lst.de


Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent db056284

block/blk-cgroup.c

+20 −0
Original line number Diff line number Diff line
@@ -1950,6 +1950,26 @@ void blk_cgroup_bio_start(struct bio *bio) 
	put_cpu();

}



bool blk_cgroup_congested(void)

{

	struct cgroup_subsys_state *css;

	bool ret = false;



	rcu_read_lock();

	css = kthread_blkcg();

	if (!css)

		css = task_css(current, io_cgrp_id);

	while (css) {

		if (atomic_read(&css->cgroup->congestion_count)) {

			ret = true;

			break;

		}

		css = css->parent;

	}

	rcu_read_unlock();

	return ret;

}



static int __init blkcg_init(void)

{

	blkcg_punt_bio_wq = alloc_workqueue("blkcg_punt_bio",

include/linux/blk-cgroup.h

+1 −19
Original line number Diff line number Diff line
@@ -135,25 +135,7 @@ static inline struct blkcg *bio_blkcg(struct bio *bio) 
	return NULL;

}



static inline bool blk_cgroup_congested(void)

{

	struct cgroup_subsys_state *css;

	bool ret = false;



	rcu_read_lock();

	css = kthread_blkcg();

	if (!css)

		css = task_css(current, io_cgrp_id);

	while (css) {

		if (atomic_read(&css->cgroup->congestion_count)) {

			ret = true;

			break;

		}

		css = css->parent;

	}

	rcu_read_unlock();

	return ret;

}

bool blk_cgroup_congested(void);



/**

 * blkcg_parent - get the parent of a blkcg