memcontrol: move mm_cgroup to header file
Inline functions must preceed their use, so mm_cgroup() should be defined
in linux/memcontrol.h.
include/linux/memcontrol.h:48: warning: 'mm_cgroup' declared inline after
being called
include/linux/memcontrol.h:48: warning: previous declaration of
'mm_cgroup' was here
[akpm@linux-foundation.org: build fix]
[akpm@linux-foundation.org: nuther build fix]
Cc: Balbir Singh <balbir@linux.vnet.ibm.com>
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index cc0ad71..4f58026 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -20,6 +20,9 @@
#ifndef _LINUX_MEMCONTROL_H
#define _LINUX_MEMCONTROL_H
+#include <linux/rcupdate.h>
+#include <linux/mm.h>
+
struct mem_cgroup;
struct page_cgroup;
struct page;
@@ -45,7 +48,11 @@
extern void mem_cgroup_out_of_memory(struct mem_cgroup *mem, gfp_t gfp_mask);
extern int mem_cgroup_cache_charge(struct page *page, struct mm_struct *mm,
gfp_t gfp_mask);
-extern struct mem_cgroup *mm_cgroup(struct mm_struct *mm);
+
+static inline struct mem_cgroup *mm_cgroup(const struct mm_struct *mm)
+{
+ return rcu_dereference(mm->mem_cgroup);
+}
static inline void mem_cgroup_uncharge_page(struct page *page)
{
@@ -98,7 +105,7 @@
return 0;
}
-static inline struct mem_cgroup *mm_cgroup(struct mm_struct *mm)
+static inline struct mem_cgroup *mm_cgroup(const struct mm_struct *mm)
{
return NULL;
}