Commit 052c3f3a authored by Tejun Heo's avatar Tejun Heo
Browse files

cgroup: relocate cgroup_[try]get/put() 



Relocate cgroup_get(), cgroup_tryget() and cgroup_put() upwards.  This
is pure code reorganization to prepare for future changes.

Signed-off-by: default avatarTejun Heo <tj@kernel.org>
parent ad2ed2b3

kernel/cgroup.c

+16 −16
Original line number Diff line number Diff line
@@ -428,6 +428,22 @@ static inline bool cgroup_is_dead(const struct cgroup *cgrp) 
	return !(cgrp->self.flags & CSS_ONLINE);

}



static void cgroup_get(struct cgroup *cgrp)

{

	WARN_ON_ONCE(cgroup_is_dead(cgrp));

	css_get(&cgrp->self);

}



static bool cgroup_tryget(struct cgroup *cgrp)

{

	return css_tryget(&cgrp->self);

}



static void cgroup_put(struct cgroup *cgrp)

{

	css_put(&cgrp->self);

}



struct cgroup_subsys_state *of_css(struct kernfs_open_file *of)

{

	struct cgroup *cgrp = of->kn->parent->priv;
@@ -1177,22 +1193,6 @@ static umode_t cgroup_file_mode(const struct cftype *cft) 
	return mode;

}



static void cgroup_get(struct cgroup *cgrp)

{

	WARN_ON_ONCE(cgroup_is_dead(cgrp));

	css_get(&cgrp->self);

}



static bool cgroup_tryget(struct cgroup *cgrp)

{

	return css_tryget(&cgrp->self);

}



static void cgroup_put(struct cgroup *cgrp)

{

	css_put(&cgrp->self);

}



/**

 * cgroup_calc_child_subsys_mask - calculate child_subsys_mask

 * @cgrp: the target cgroup