1 files changed, 8 insertions, 0 deletions

diff --git a/include/linux/page_cgroup.h b/include/linux/page_cgroup.h
index b0e4eb12623..aef22ae2af4 100644
--- a/include/linux/page_cgroup.h
+++ b/include/linux/page_cgroup.h
@@ -39,6 +39,7 @@ enum {
         PCG_CACHE, /* charged as cache */
         PCG_USED, /* this object is in use. */
         PCG_ACCT_LRU, /* page has been accounted for */
+        PCG_FILE_MAPPED, /* page is accounted as "mapped" */
 };
 
 #define TESTPCGFLAG(uname, lname)                       \
@@ -73,6 +74,11 @@ CLEARPCGFLAG(AcctLRU, ACCT_LRU)
 TESTPCGFLAG(AcctLRU, ACCT_LRU)
 TESTCLEARPCGFLAG(AcctLRU, ACCT_LRU)
 
+
+SETPCGFLAG(FileMapped, FILE_MAPPED)
+CLEARPCGFLAG(FileMapped, FILE_MAPPED)
+TESTPCGFLAG(FileMapped, FILE_MAPPED)
+
 static inline int page_cgroup_nid(struct page_cgroup *pc)
 {
         return page_to_nid(pc->page);
@@ -118,6 +124,8 @@ static inline void __init page_cgroup_init_flatmem(void)
 #include <linux/swap.h>
 
 #ifdef CONFIG_CGROUP_MEM_RES_CTLR_SWAP
+extern unsigned short swap_cgroup_cmpxchg(swp_entry_t ent,
+                                        unsigned short old, unsigned short new);
 extern unsigned short swap_cgroup_record(swp_entry_t ent, unsigned short id);
 extern unsigned short lookup_swap_cgroup(swp_entry_t ent);
 extern int swap_cgroup_swapon(int type, unsigned long max_pages);