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blk-cgroup: move blkcg_css to blk-cgroup.c

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blkcg_css is only used in blk-cgroup.c, so move it there.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Tejun Heo <tj@kernel.org>
Link: https://lore.kernel.org/r/20220420042723.1010598-13-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2022-04-20 06:27:20 +02:00 committed by Jens Axboe
parent c97ab27157
commit bc5fee91f2
2 changed files with 17 additions and 17 deletions
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17
block/blk-cgroup.c
View File

@ -59,6 +59,23 @@ static struct workqueue_struct *blkcg_punt_bio_wq;
#define BLKG_DESTROY_BATCH_SIZE 64 #define BLKG_DESTROY_BATCH_SIZE 64
/**
* blkcg_css - find the current css
*
* Find the css associated with either the kthread or the current task.
* This may return a dying css, so it is up to the caller to use tryget logic
* to confirm it is alive and well.
*/
static struct cgroup_subsys_state *blkcg_css(void)
{
struct cgroup_subsys_state *css;
css = kthread_blkcg();
if (css)
return css;
return task_css(current, io_cgrp_id);
}
static bool blkcg_policy_enabled(struct request_queue *q, static bool blkcg_policy_enabled(struct request_queue *q,
const struct blkcg_policy *pol) const struct blkcg_policy *pol)
{ {

17
block/blk-cgroup.h
View File

@ -210,23 +210,6 @@ int blkg_conf_prep(struct blkcg *blkcg, const struct blkcg_policy *pol,
char *input, struct blkg_conf_ctx *ctx); char *input, struct blkg_conf_ctx *ctx);
void blkg_conf_finish(struct blkg_conf_ctx *ctx); void blkg_conf_finish(struct blkg_conf_ctx *ctx);
/**
* blkcg_css - find the current css
*
* Find the css associated with either the kthread or the current task.
* This may return a dying css, so it is up to the caller to use tryget logic
* to confirm it is alive and well.
*/
static inline struct cgroup_subsys_state *blkcg_css(void)
{
struct cgroup_subsys_state *css;
css = kthread_blkcg();
if (css)
return css;
return task_css(current, io_cgrp_id);
}
/** /**
* bio_issue_as_root_blkg - see if this bio needs to be issued as root blkg * bio_issue_as_root_blkg - see if this bio needs to be issued as root blkg
* @return: true if this bio needs to be submitted with the root blkg context. * @return: true if this bio needs to be submitted with the root blkg context.