From: Johannes Weiner <hannes@cmpxchg.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Michal Hocko <mhocko@suse.cz>,
Vladimir Davydov <vdavydov@parallels.com>,
linux-mm@kvack.org, cgroups@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [patch] mm: memcontrol: remove stale page_cgroup_lock comment
Date: Sat, 1 Nov 2014 23:14:20 -0400 [thread overview]
Message-ID: <1414898060-4658-1-git-send-email-hannes@cmpxchg.org> (raw)
There is no cgroup-specific page lock anymore.
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
---
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
--
2.1.3
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next reply other threads:[~2014-11-02 3:14 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-02 3:14 Johannes Weiner [this message]
2014-11-03 15:28 ` Michal Hocko
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