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-rw-r--r--mm/memcontrol.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index ce7a8cc7b404..9d17310be470 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -1127,8 +1127,8 @@ skip_node:
1127 * skipping css reference should be safe. 1127 * skipping css reference should be safe.
1128 */ 1128 */
1129 if (next_css) { 1129 if (next_css) {
1130 if ((next_css->flags & CSS_ONLINE) && 1130 if ((next_css == &root->css) ||
1131 (next_css == &root->css || css_tryget(next_css))) 1131 ((next_css->flags & CSS_ONLINE) && css_tryget(next_css)))
1132 return mem_cgroup_from_css(next_css); 1132 return mem_cgroup_from_css(next_css);
1133 1133
1134 prev_css = next_css; 1134 prev_css = next_css;