---

yaml --- r: 320780 b: refs/heads/master c: 7575468 h: refs/heads/master v: v3
git-mirror · Aug 1, 2012 · d79186e · d79186e
1 parent 1c8e1d8
commit d79186e
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Showing 2 changed files with 5 additions and 3 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 94ae8ba7176666d1e7d8bbb9f93670a27540b6a8
+refs/heads/master: 75754681fe79b84dde1048470a44eeb64192fad6
diff --git a/trunk/mm/hugetlb_cgroup.c b/trunk/mm/hugetlb_cgroup.c
@@ -385,6 +385,10 @@ int __init hugetlb_cgroup_file_init(int idx)
 	return 0;
 }
 
+/*
+ * hugetlb_lock will make sure a parallel cgroup rmdir won't happen
+ * when we migrate hugepages
+ */
 void hugetlb_cgroup_migrate(struct page *oldhpage, struct page *newhpage)
 {
 	struct hugetlb_cgroup *h_cg;
@@ -397,13 +401,11 @@ void hugetlb_cgroup_migrate(struct page *oldhpage, struct page *newhpage)
 	spin_lock(&hugetlb_lock);
 	h_cg = hugetlb_cgroup_from_page(oldhpage);
 	set_hugetlb_cgroup(oldhpage, NULL);
-	cgroup_exclude_rmdir(&h_cg->css);
 
 	/* move the h_cg details to new cgroup */
 	set_hugetlb_cgroup(newhpage, h_cg);
 	list_move(&newhpage->lru, &h->hugepage_activelist);
 	spin_unlock(&hugetlb_lock);
-	cgroup_release_and_wakeup_rmdir(&h_cg->css);
 	return;
 }