8 files changed, 30 insertions, 26 deletions

diff --git a/Documentation/controllers/memory.txt b/Documentation/controllers/memory.txt
index fba6af45225c..866b9cd9a959 100644
--- a/Documentation/controllers/memory.txt
+++ b/Documentation/controllers/memory.txt
@@ -1,4 +1,8 @@
-Memory Controller
+Memory Resource Controller
+
+NOTE: The Memory Resource Controller has been generically been referred
+to as the memory controller in this document. Do not confuse memory controller
+used here with the memory controller that is used in hardware.
 
 Salient features
 
@@ -152,7 +156,7 @@ The memory controller uses the following hierarchy
 
 a. Enable CONFIG_CGROUPS
 b. Enable CONFIG_RESOURCE_COUNTERS
-c. Enable CONFIG_CGROUP_MEM_CONT
+c. Enable CONFIG_CGROUP_MEM_RES_CTLR
 
 1. Prepare the cgroups
 # mkdir -p /cgroups
diff --git a/include/linux/cgroup_subsys.h b/include/linux/cgroup_subsys.h
index ac6aad98b607..1ddebfc52565 100644
--- a/include/linux/cgroup_subsys.h
+++ b/include/linux/cgroup_subsys.h
@@ -37,7 +37,7 @@ SUBSYS(cpuacct)
 
 /* */
 
-#ifdef CONFIG_CGROUP_MEM_CONT
+#ifdef CONFIG_CGROUP_MEM_RES_CTLR
 SUBSYS(mem_cgroup)
 #endif
 
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index 04075628cb9a..a8be8073b9e6 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -25,7 +25,7 @@ struct page_cgroup;
 struct page;
 struct mm_struct;
 
-#ifdef CONFIG_CGROUP_MEM_CONT
+#ifdef CONFIG_CGROUP_MEM_RES_CTLR
 
 extern void mm_init_cgroup(struct mm_struct *mm, struct task_struct *p);
 extern void mm_free_cgroup(struct mm_struct *mm);
@@ -72,7 +72,7 @@ extern long mem_cgroup_calc_reclaim_active(struct mem_cgroup *mem,
 extern long mem_cgroup_calc_reclaim_inactive(struct mem_cgroup *mem,
                                 struct zone *zone, int priority);
 
-#else /* CONFIG_CGROUP_MEM_CONT */
+#else /* CONFIG_CGROUP_MEM_RES_CTLR */
 static inline void mm_init_cgroup(struct mm_struct *mm,
                                         struct task_struct *p)
 {
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index 34023c65d466..af190ceab971 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -88,7 +88,7 @@ struct page {
         void *virtual;                  /* Kernel virtual address (NULL if
                                            not kmapped, ie. highmem) */
 #endif /* WANT_PAGE_VIRTUAL */
-#ifdef CONFIG_CGROUP_MEM_CONT
+#ifdef CONFIG_CGROUP_MEM_RES_CTLR
         unsigned long page_cgroup;
 #endif
 };
@@ -222,7 +222,7 @@ struct mm_struct {
         /* aio bits */
         rwlock_t                ioctx_list_lock;
         struct kioctx           *ioctx_list;
-#ifdef CONFIG_CGROUP_MEM_CONT
+#ifdef CONFIG_CGROUP_MEM_RES_CTLR
         struct mem_cgroup *mem_cgroup;
 #endif
 };
diff --git a/init/Kconfig b/init/Kconfig
index f698a5af5007..442850b984be 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -366,6 +366,21 @@ config RESOURCE_COUNTERS
           infrastructure that works with cgroups
         depends on CGROUPS
 
+config CGROUP_MEM_RES_CTLR
+        bool "Memory Resource Controller for Control Groups"
+        depends on CGROUPS && RESOURCE_COUNTERS
+        help
+          Provides a memory resource controller that manages both page cache and
+          RSS memory.
+
+          Note that setting this option increases fixed memory overhead
+          associated with each page of memory in the system by 4/8 bytes
+          and also increases cache misses because struct page on many 64bit
+          systems will not fit into a single cache line anymore.
+
+          Only enable when you're ok with these trade offs and really
+          sure you need the memory resource controller.
+
 config SYSFS_DEPRECATED
         bool "Create deprecated sysfs files"
         depends on SYSFS
@@ -387,21 +402,6 @@ config SYSFS_DEPRECATED
           If you are using a distro that was released in 2006 or later,
           it should be safe to say N here.
 
-config CGROUP_MEM_CONT
-        bool "Memory controller for cgroups"
-        depends on CGROUPS && RESOURCE_COUNTERS
-        help
-          Provides a memory controller that manages both page cache and
-          RSS memory.
-
-          Note that setting this option increases fixed memory overhead
-          associated with each page of memory in the system by 4/8 bytes
-          and also increases cache misses because struct page on many 64bit
-          systems will not fit into a single cache line anymore.
-
-          Only enable when you're ok with these trade offs and really
-          sure you need the memory controller.
-
 config PROC_PID_CPUSET
         bool "Include legacy /proc/<pid>/cpuset file"
         depends on CPUSETS
diff --git a/mm/Makefile b/mm/Makefile
index 9f117bab5322..a5b0dd93427a 100644
--- a/mm/Makefile
+++ b/mm/Makefile
@@ -32,5 +32,5 @@ obj-$(CONFIG_FS_XIP) += filemap_xip.o
 obj-$(CONFIG_MIGRATION) += migrate.o
 obj-$(CONFIG_SMP) += allocpercpu.o
 obj-$(CONFIG_QUICKLIST) += quicklist.o
-obj-$(CONFIG_CGROUP_MEM_CONT) += memcontrol.o
+obj-$(CONFIG_CGROUP_MEM_RES_CTLR) += memcontrol.o
 
diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index 4194b9db0104..44b2da11bf43 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -412,7 +412,7 @@ static int oom_kill_process(struct task_struct *p, gfp_t gfp_mask, int order,
         return oom_kill_task(p);
 }
 
-#ifdef CONFIG_CGROUP_MEM_CONT
+#ifdef CONFIG_CGROUP_MEM_RES_CTLR
 void mem_cgroup_out_of_memory(struct mem_cgroup *mem, gfp_t gfp_mask)
 {
         unsigned long points = 0;
diff --git a/mm/vmscan.c b/mm/vmscan.c
index a26dabd62fed..106ba10e1ac6 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -126,7 +126,7 @@ long vm_total_pages;	/* The total number of pages which the VM controls */
 static LIST_HEAD(shrinker_list);
 static DECLARE_RWSEM(shrinker_rwsem);
 
-#ifdef CONFIG_CGROUP_MEM_CONT
+#ifdef CONFIG_CGROUP_MEM_RES_CTLR
 #define scan_global_lru(sc)     (!(sc)->mem_cgroup)
 #else
 #define scan_global_lru(sc)     (1)
@@ -1427,7 +1427,7 @@ unsigned long try_to_free_pages(struct zone **zones, int order, gfp_t gfp_mask)
         return do_try_to_free_pages(zones, gfp_mask, &sc);
 }
 
-#ifdef CONFIG_CGROUP_MEM_CONT
+#ifdef CONFIG_CGROUP_MEM_RES_CTLR
 
 unsigned long try_to_free_mem_cgroup_pages(struct mem_cgroup *mem_cont,
                                                 gfp_t gfp_mask)