Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit af551fb3 authored by Shaohua Li's avatar Shaohua Li Committed by Jens Axboe
Browse files

blkcg: delete unused APIs



Nobody uses the APIs right now.

Acked-by: default avatarTejun Heo <tj@kernel.org>
Signed-off-by: default avatarShaohua Li <shli@fb.com>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 05e3db95
Loading
Loading
Loading
Loading
+0 −31
Original line number Diff line number Diff line
@@ -2032,37 +2032,6 @@ int bio_associate_blkcg(struct bio *bio, struct cgroup_subsys_state *blkcg_css)
}
EXPORT_SYMBOL_GPL(bio_associate_blkcg);

/**
 * bio_associate_current - associate a bio with %current
 * @bio: target bio
 *
 * Associate @bio with %current if it hasn't been associated yet.  Block
 * layer will treat @bio as if it were issued by %current no matter which
 * task actually issues it.
 *
 * This function takes an extra reference of @task's io_context and blkcg
 * which will be put when @bio is released.  The caller must own @bio,
 * ensure %current->io_context exists, and is responsible for synchronizing
 * calls to this function.
 */
int bio_associate_current(struct bio *bio)
{
	struct io_context *ioc;

	if (bio->bi_css)
		return -EBUSY;

	ioc = current->io_context;
	if (!ioc)
		return -ENOENT;

	get_io_context_active(ioc);
	bio->bi_ioc = ioc;
	bio->bi_css = task_get_css(current, io_cgrp_id);
	return 0;
}
EXPORT_SYMBOL_GPL(bio_associate_current);

/**
 * bio_disassociate_task - undo bio_associate_current()
 * @bio: target bio
+0 −2
Original line number Diff line number Diff line
@@ -522,13 +522,11 @@ do { \

#ifdef CONFIG_BLK_CGROUP
int bio_associate_blkcg(struct bio *bio, struct cgroup_subsys_state *blkcg_css);
int bio_associate_current(struct bio *bio);
void bio_disassociate_task(struct bio *bio);
void bio_clone_blkcg_association(struct bio *dst, struct bio *src);
#else	/* CONFIG_BLK_CGROUP */
static inline int bio_associate_blkcg(struct bio *bio,
			struct cgroup_subsys_state *blkcg_css) { return 0; }
static inline int bio_associate_current(struct bio *bio) { return -ENOENT; }
static inline void bio_disassociate_task(struct bio *bio) { }
static inline void bio_clone_blkcg_association(struct bio *dst,
			struct bio *src) { }
+0 −12
Original line number Diff line number Diff line
@@ -235,12 +235,6 @@ static inline struct blkcg *bio_blkcg(struct bio *bio)
	return task_blkcg(current);
}

static inline struct cgroup_subsys_state *
task_get_blkcg_css(struct task_struct *task)
{
	return task_get_css(task, io_cgrp_id);
}

/**
 * blkcg_parent - get the parent of a blkcg
 * @blkcg: blkcg of interest
@@ -735,12 +729,6 @@ struct blkcg_policy {

#define blkcg_root_css	((struct cgroup_subsys_state *)ERR_PTR(-EINVAL))

static inline struct cgroup_subsys_state *
task_get_blkcg_css(struct task_struct *task)
{
	return NULL;
}

#ifdef CONFIG_BLOCK

static inline struct blkcg_gq *blkg_lookup(struct blkcg *blkcg, void *key) { return NULL; }