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-rw-r--r--include/linux/cgroup.h12
1 files changed, 2 insertions, 10 deletions
diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
index 5a85b3415c1..bb627e0f305 100644
--- a/include/linux/cgroup.h
+++ b/include/linux/cgroup.h
@@ -84,12 +84,6 @@ enum {
CSS_REMOVED, /* This CSS is dead */
};
-/* Caller must verify that the css is not for root cgroup */
-static inline void __css_get(struct cgroup_subsys_state *css, int count)
-{
- atomic_add(count, &css->refcnt);
-}
-
/*
* Call css_get() to hold a reference on the css; it can be used
* for a reference obtained via:
@@ -97,6 +91,7 @@ static inline void __css_get(struct cgroup_subsys_state *css, int count)
* - task->cgroups for a locked task
*/
+extern void __css_get(struct cgroup_subsys_state *css, int count);
static inline void css_get(struct cgroup_subsys_state *css)
{
/* We don't need to reference count the root state */
@@ -143,10 +138,7 @@ static inline void css_put(struct cgroup_subsys_state *css)
enum {
/* Control Group is dead */
CGRP_REMOVED,
- /*
- * Control Group has previously had a child cgroup or a task,
- * but no longer (only if CGRP_NOTIFY_ON_RELEASE is set)
- */
+ /* Control Group has ever had a child cgroup or a task */
CGRP_RELEASABLE,
/* Control Group requires release notifications to userspace */
CGRP_NOTIFY_ON_RELEASE,