1 files changed, 5 insertions, 0 deletions

diff --git a/include/linux/page_cgroup.h b/include/linux/page_cgroup.h
index aef22ae2af4..5bb13b3db84 100644
--- a/include/linux/page_cgroup.h
+++ b/include/linux/page_cgroup.h
@@ -40,6 +40,7 @@ enum {
         PCG_USED, /* this object is in use. */
         PCG_ACCT_LRU, /* page has been accounted for */
         PCG_FILE_MAPPED, /* page is accounted as "mapped" */
+        PCG_MIGRATION, /* under page migration */
 };
 
 #define TESTPCGFLAG(uname, lname)                       \
@@ -79,6 +80,10 @@ SETPCGFLAG(FileMapped, FILE_MAPPED)
 CLEARPCGFLAG(FileMapped, FILE_MAPPED)
 TESTPCGFLAG(FileMapped, FILE_MAPPED)
 
+SETPCGFLAG(Migration, MIGRATION)
+CLEARPCGFLAG(Migration, MIGRATION)
+TESTPCGFLAG(Migration, MIGRATION)
+
 static inline int page_cgroup_nid(struct page_cgroup *pc)
 {
         return page_to_nid(pc->page);