hugetlb/cgroup: migrate hugetlb cgroup info from oldpage to new page during migration

[firefly-linux-kernel-4.4.55.git] / include / linux / hugetlb_cgroup.h

diff --git a/include/linux/hugetlb_cgroup.h b/include/linux/hugetlb_cgroup.h
index 73f1e600fc1217d7f843de46df3a1dc49b9d3468..d73878c694b3d43e85fc8b2d62f29107ed61d157 100644 (file)
--- a/include/linux/hugetlb_cgroup.h
+++ b/include/linux/hugetlb_cgroup.h
@@ -63,6 +63,8 @@ extern void hugetlb_cgroup_uncharge_page(int idx, unsigned long nr_pages,
 extern void hugetlb_cgroup_uncharge_cgroup(int idx, unsigned long nr_pages,
                                           struct hugetlb_cgroup *h_cg);
 extern int hugetlb_cgroup_file_init(int idx) __init;
+extern void hugetlb_cgroup_migrate(struct page *oldhpage,
+                                  struct page *newhpage);
 
 #else
 static inline struct hugetlb_cgroup *hugetlb_cgroup_from_page(struct page *page)
@@ -114,5 +116,11 @@ static inline int __init hugetlb_cgroup_file_init(int idx)
        return 0;
 }
 
+static inline void hugetlb_cgroup_migrate(struct page *oldhpage,
+                                         struct page *newhpage)
+{
+       return;
+}
+
 #endif  /* CONFIG_MEM_RES_CTLR_HUGETLB */
 #endif