From: Johannes Weiner <hannes@cmpxchg.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
Michal Hocko <mhocko@suse.cz>, Hugh Dickins <hughd@google.com>,
David Rientjes <rientjes@google.com>,
linux-mm@kvack.org, cgroups@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [patch 08/11] mm: memcg: remove needless !mm fixup to init_mm when charging
Date: Thu, 5 Jul 2012 02:45:00 +0200 [thread overview]
Message-ID: <1341449103-1986-9-git-send-email-hannes@cmpxchg.org> (raw)
In-Reply-To: <1341449103-1986-1-git-send-email-hannes@cmpxchg.org>
It does not matter to __mem_cgroup_try_charge() if the passed mm is
NULL or init_mm, it will charge the root memcg in either case.
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
---
mm/memcontrol.c | 5 -----
1 files changed, 0 insertions(+), 5 deletions(-)
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 418b47d..6fe4101 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -2766,8 +2766,6 @@ int mem_cgroup_try_charge_swapin(struct mm_struct *mm,
ret = 0;
return ret;
charge_cur_mm:
- if (unlikely(!mm))
- mm = &init_mm;
ret = __mem_cgroup_try_charge(mm, mask, 1, memcgp, true);
if (ret == -EINTR)
ret = 0;
@@ -2832,9 +2830,6 @@ int mem_cgroup_cache_charge(struct page *page, struct mm_struct *mm,
if (PageCompound(page))
return 0;
- if (unlikely(!mm))
- mm = &init_mm;
-
if (!PageSwapCache(page))
ret = mem_cgroup_charge_common(page, mm, gfp_mask, type);
else { /* page is swapcache/shmem */
--
1.7.7.6
--
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next prev parent reply other threads:[~2012-07-05 0:45 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-05 0:44 [patch 00/11] mm: memcg: charge/uncharge improvements Johannes Weiner
2012-07-05 0:44 ` [patch 01/11] mm: memcg: fix compaction/migration failing due to memcg limits Johannes Weiner
2012-07-09 2:27 ` Kamezawa Hiroyuki
2012-07-09 14:15 ` Michal Hocko
2012-07-05 0:44 ` [patch 02/11] mm: swapfile: clean up unuse_pte race handling Johannes Weiner
2012-07-09 2:29 ` Kamezawa Hiroyuki
2012-07-09 14:22 ` Michal Hocko
2012-07-05 0:44 ` [patch 03/11] mm: shmem: do not try to uncharge known swapcache pages Johannes Weiner
2012-07-09 2:33 ` Kamezawa Hiroyuki
2012-07-09 14:46 ` Michal Hocko
2012-07-09 20:37 ` Hugh Dickins
2012-07-10 17:16 ` Michal Hocko
2012-07-11 18:48 ` Hugh Dickins
2012-07-12 13:51 ` Michal Hocko
2012-07-09 20:11 ` Hugh Dickins
2012-07-05 0:44 ` [patch 04/11] mm: memcg: push down PageSwapCache check into uncharge entry functions Johannes Weiner
2012-07-09 2:42 ` Kamezawa Hiroyuki
2012-07-09 7:36 ` Johannes Weiner
2012-07-09 15:02 ` Michal Hocko
2012-07-05 0:44 ` [patch 05/11] mm: memcg: only check for PageSwapCache when uncharging anon Johannes Weiner
2012-07-09 2:49 ` Kamezawa Hiroyuki
2012-07-09 15:05 ` Michal Hocko
2012-07-05 0:44 ` [patch 06/11] mm: memcg: move swapin charge functions above callsites Johannes Weiner
2012-07-09 2:50 ` Kamezawa Hiroyuki
2012-07-09 15:10 ` Michal Hocko
2012-07-05 0:44 ` [patch 07/11] mm: memcg: remove unneeded shmem charge type Johannes Weiner
2012-07-09 2:51 ` Kamezawa Hiroyuki
2012-07-09 15:17 ` Michal Hocko
2012-07-05 0:45 ` Johannes Weiner [this message]
2012-07-09 2:53 ` [patch 08/11] mm: memcg: remove needless !mm fixup to init_mm when charging Kamezawa Hiroyuki
2012-07-09 15:20 ` Michal Hocko
2012-07-10 6:10 ` Wanpeng Li
2012-07-10 6:21 ` Michal Hocko
2012-07-10 6:54 ` Wanpeng Li
2012-07-10 16:22 ` Michal Hocko
2012-07-05 0:45 ` [patch 09/11] mm: memcg: split swapin charge function into private and public part Johannes Weiner
2012-07-09 2:55 ` Kamezawa Hiroyuki
2012-07-09 15:28 ` Michal Hocko
2012-07-05 0:45 ` [patch 10/11] mm: memcg: only check swap cache pages for repeated charging Johannes Weiner
2012-07-09 3:26 ` Kamezawa Hiroyuki
2012-07-09 15:32 ` Michal Hocko
2012-07-05 0:45 ` [patch 11/11] mm: memcg: only check anon swapin page charges for swap cache Johannes Weiner
2012-07-09 3:44 ` Kamezawa Hiroyuki
2012-07-09 15:34 ` Michal Hocko
2012-07-09 15:35 ` [patch 00/11] mm: memcg: charge/uncharge improvements Michal Hocko
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