---

yaml --- r: 83784 b: refs/heads/master c: ac44d35 h: refs/heads/master v: v3
git-mirror · Feb 7, 2008 · 599b091 · 599b091
1 parent e951088
commit 599b091
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Showing 2 changed files with 8 additions and 4 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 217bc3194d57150549e9234e6ddfee30de28cc78
+refs/heads/master: ac44d354d5c9ced49b1165d6496f134501134219
diff --git a/trunk/mm/memcontrol.c b/trunk/mm/memcontrol.c
@@ -456,16 +456,20 @@ int mem_cgroup_charge(struct page *page, struct mm_struct *mm,
 int mem_cgroup_cache_charge(struct page *page, struct mm_struct *mm,
 				gfp_t gfp_mask)
 {
+	int ret = 0;
 	struct mem_cgroup *mem;
 	if (!mm)
 		mm = &init_mm;
 
+	rcu_read_lock();
 	mem = rcu_dereference(mm->mem_cgroup);
+	css_get(&mem->css);
+	rcu_read_unlock();
 	if (mem->control_type == MEM_CGROUP_TYPE_ALL)
-		return mem_cgroup_charge_common(page, mm, gfp_mask,
+		ret = mem_cgroup_charge_common(page, mm, gfp_mask,
 				MEM_CGROUP_CHARGE_TYPE_CACHE);
-	else
-		return 0;
+	css_put(&mem->css);
+	return ret;
 }
 
 /*