cgroup: make cgroup_is_removed() static

cgroup_is_removed() no longer has external users and it shouldn't grow
any - controllers should deal with cgroup_subsys_state on/offline
state instead of cgroup removal state.  Make it static.

While at it, make it return bool.

Signed-off-by: Tejun Heo <tj@kernel.org>

2 files changed, 1 insertions, 2 deletions

diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
index 1df5f699be61..8d9f3c911fca 100644
--- a/include/linux/cgroup.h
+++ b/include/linux/cgroup.h
@@ -538,7 +538,6 @@ static inline const char *cgroup_name(const struct cgroup *cgrp)
 int cgroup_add_cftypes(struct cgroup_subsys *ss, struct cftype *cfts);
 int cgroup_rm_cftypes(struct cgroup_subsys *ss, struct cftype *cfts);
 
-int cgroup_is_removed(const struct cgroup *cgrp);
 bool cgroup_is_descendant(struct cgroup *cgrp, struct cgroup *ancestor);
 
 int cgroup_path(const struct cgroup *cgrp, char *buf, int buflen);
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index a19419f4af1a..501974823b33 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -226,7 +226,7 @@ static int css_refcnt(struct cgroup_subsys_state *css)
 }
 
 /* convenient tests for these bits */
-inline int cgroup_is_removed(const struct cgroup *cgrp)
+static inline bool cgroup_is_removed(const struct cgroup *cgrp)
 {
         return test_bit(CGRP_REMOVED, &cgrp->flags);
 }