Memory controller: accounting setup

Basic setup routines, the mm_struct has a pointer to the cgroup that
it belongs to and the the page has a page_cgroup associated with it.

Signed-off-by: Pavel Emelianov <xemul@openvz.org>
Signed-off-by: Balbir Singh <balbir@linux.vnet.ibm.com>
Cc: Paul Menage <menage@google.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Kirill Korotaev <dev@sw.ru>
Cc: Herbert Poetzl <herbert@13thfloor.at>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 8 insertions, 3 deletions

diff --git a/kernel/fork.c b/kernel/fork.c
index 3995297567a9..b2ef8e4fad70 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -40,6 +40,7 @@
 #include <linux/ptrace.h>
 #include <linux/mount.h>
 #include <linux/audit.h>
+#include <linux/memcontrol.h>
 #include <linux/profile.h>
 #include <linux/rmap.h>
 #include <linux/acct.h>
@@ -340,7 +341,7 @@ __cacheline_aligned_in_smp DEFINE_SPINLOCK(mmlist_lock);
 
 #include <linux/init_task.h>
 
-static struct mm_struct * mm_init(struct mm_struct * mm)
+static struct mm_struct * mm_init(struct mm_struct * mm, struct task_struct *p)
 {
         atomic_set(&mm->mm_users, 1);
         atomic_set(&mm->mm_count, 1);
@@ -357,11 +358,14 @@ static struct mm_struct * mm_init(struct mm_struct * mm)
         mm->ioctx_list = NULL;
         mm->free_area_cache = TASK_UNMAPPED_BASE;
         mm->cached_hole_size = ~0UL;
+        mm_init_cgroup(mm, p);
 
         if (likely(!mm_alloc_pgd(mm))) {
                 mm->def_flags = 0;
                 return mm;
         }
+
+        mm_free_cgroup(mm);
         free_mm(mm);
         return NULL;
 }
@@ -376,7 +380,7 @@ struct mm_struct * mm_alloc(void)
         mm = allocate_mm();
         if (mm) {
                 memset(mm, 0, sizeof(*mm));
-                mm = mm_init(mm);
+                mm = mm_init(mm, current);
         }
         return mm;
 }
@@ -390,6 +394,7 @@ void fastcall __mmdrop(struct mm_struct *mm)
 {
         BUG_ON(mm == &init_mm);
         mm_free_pgd(mm);
+        mm_free_cgroup(mm);
         destroy_context(mm);
         free_mm(mm);
 }
@@ -511,7 +516,7 @@ static struct mm_struct *dup_mm(struct task_struct *tsk)
         mm->token_priority = 0;
         mm->last_interval = 0;
 
-        if (!mm_init(mm))
+        if (!mm_init(mm, tsk))
                 goto fail_nomem;
 
         if (init_new_context(tsk, mm))