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Diffstat (limited to 'include/linux/memcontrol.h')
-rw-r--r--include/linux/memcontrol.h11
1 files changed, 9 insertions, 2 deletions
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index cc0ad7191ac..4f580268b1b 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 unsigned long mem_cgroup_isolate_pages(unsigned long nr_to_scan,
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 @@ static inline int mem_cgroup_cache_charge(struct page *page,
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;
}