Merge commit 'v2.6.29-rc8' into cpus4096

[safe/jmp/linux-2.6] / include / linux / page_cgroup.h

diff --git a/include/linux/page_cgroup.h b/include/linux/page_cgroup.h
index 1e6d34b..602cc1f 100644 (file)
--- a/include/linux/page_cgroup.h
+++ b/include/linux/page_cgroup.h
@@ -26,10 +26,6 @@ enum {
        PCG_LOCK,  /* page cgroup is locked */
        PCG_CACHE, /* charged as cache */
        PCG_USED, /* this object is in use. */
-       /* flags for LRU placement */
-       PCG_ACTIVE, /* page is active in this cgroup */
-       PCG_FILE, /* page is file system backed */
-       PCG_UNEVICTABLE, /* page is unevictableable */
 };
 
 #define TESTPCGFLAG(uname, lname)                      \
@@ -50,19 +46,6 @@ TESTPCGFLAG(Cache, CACHE)
 TESTPCGFLAG(Used, USED)
 CLEARPCGFLAG(Used, USED)
 
-/* LRU management flags (from global-lru definition) */
-TESTPCGFLAG(File, FILE)
-SETPCGFLAG(File, FILE)
-CLEARPCGFLAG(File, FILE)
-
-TESTPCGFLAG(Active, ACTIVE)
-SETPCGFLAG(Active, ACTIVE)
-CLEARPCGFLAG(Active, ACTIVE)
-
-TESTPCGFLAG(Unevictable, UNEVICTABLE)
-SETPCGFLAG(Unevictable, UNEVICTABLE)
-CLEARPCGFLAG(Unevictable, UNEVICTABLE)
-
 static inline int page_cgroup_nid(struct page_cgroup *pc)
 {
        return page_to_nid(pc->page);
@@ -105,4 +88,39 @@ static inline void page_cgroup_init(void)
 }
 
 #endif
+
+#ifdef CONFIG_CGROUP_MEM_RES_CTLR_SWAP
+#include <linux/swap.h>
+extern struct mem_cgroup *
+swap_cgroup_record(swp_entry_t ent, struct mem_cgroup *mem);
+extern struct mem_cgroup *lookup_swap_cgroup(swp_entry_t ent);
+extern int swap_cgroup_swapon(int type, unsigned long max_pages);
+extern void swap_cgroup_swapoff(int type);
+#else
+#include <linux/swap.h>
+
+static inline
+struct mem_cgroup *swap_cgroup_record(swp_entry_t ent, struct mem_cgroup *mem)
+{
+       return NULL;
+}
+
+static inline
+struct mem_cgroup *lookup_swap_cgroup(swp_entry_t ent)
+{
+       return NULL;
+}
+
+static inline int
+swap_cgroup_swapon(int type, unsigned long max_pages)
+{
+       return 0;
+}
+
+static inline void swap_cgroup_swapoff(int type)
+{
+       return;
+}
+
+#endif
 #endif