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-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 472efd09118..2de6504e01f 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -61,8 +61,15 @@ int task_in_mem_cgroup(struct task_struct *task, const struct mem_cgroup *mem);
extern struct mem_cgroup *mem_cgroup_from_task(struct task_struct *p);
-#define mm_match_cgroup(mm, cgroup) \
- ((cgroup) == mem_cgroup_from_task((mm)->owner))
+static inline
+int mm_match_cgroup(const struct mm_struct *mm, const struct mem_cgroup *cgroup)
+{
+ struct mem_cgroup *mem;
+ rcu_read_lock();
+ mem = mem_cgroup_from_task((mm)->owner);
+ rcu_read_unlock();
+ return cgroup == mem;
+}
extern int
mem_cgroup_prepare_migration(struct page *page, struct mem_cgroup **ptr);