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Date:	Sat,  1 Nov 2014 23:14:20 -0400
From:	Johannes Weiner <>
To:	Andrew Morton <>
Cc:	Michal Hocko <>,
	Vladimir Davydov <>,,,
Subject: [patch] mm: memcontrol: remove stale page_cgroup_lock comment

There is no cgroup-specific page lock anymore.

Signed-off-by: Johannes Weiner <>
 mm/memcontrol.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 38f0647a2f12..d20928597a07 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -2467,10 +2467,6 @@ static void commit_charge(struct page *page, struct mem_cgroup *memcg,
 	int isolated;
 	VM_BUG_ON_PAGE(pc->mem_cgroup, page);
-	/*
-	 * we don't need page_cgroup_lock about tail pages, becase they are not
-	 * accessed by any other context at this point.
-	 */
 	 * In some cases, SwapCache and FUSE(splice_buf->radixtree), the page

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