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>,
Wanpeng Li <liwp.linux@gmail.com>,
linux-mm@kvack.org, cgroups@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [patch 06/10] mm: memcg: remove unneeded shmem charge type
Date: Wed, 11 Jul 2012 19:02:18 +0200 [thread overview]
Message-ID: <1342026142-7284-7-git-send-email-hannes@cmpxchg.org> (raw)
In-Reply-To: <1342026142-7284-1-git-send-email-hannes@cmpxchg.org>
shmem page charges have not needed a separate charge type to tell them
from regular file pages since 08e552c 'memcg: synchronized LRU'.
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
---
mm/memcontrol.c | 11 +----------
1 files changed, 1 insertions(+), 10 deletions(-)
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 081780b..2c7d164c 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -379,7 +379,6 @@ static bool move_file(void)
enum charge_type {
MEM_CGROUP_CHARGE_TYPE_CACHE = 0,
MEM_CGROUP_CHARGE_TYPE_ANON,
- MEM_CGROUP_CHARGE_TYPE_SHMEM, /* used by page migration of shmem */
MEM_CGROUP_CHARGE_TYPE_SWAPOUT, /* for accounting swapcache */
MEM_CGROUP_CHARGE_TYPE_DROP, /* a page was unused swap cache */
NR_CHARGE_TYPE,
@@ -2903,8 +2902,6 @@ int mem_cgroup_cache_charge(struct page *page, struct mm_struct *mm,
if (unlikely(!mm))
mm = &init_mm;
- if (!page_is_file_cache(page))
- type = MEM_CGROUP_CHARGE_TYPE_SHMEM;
if (!PageSwapCache(page))
ret = mem_cgroup_charge_common(page, mm, gfp_mask, type);
@@ -3311,10 +3308,8 @@ void mem_cgroup_prepare_migration(struct page *page, struct page *newpage,
*/
if (PageAnon(page))
ctype = MEM_CGROUP_CHARGE_TYPE_ANON;
- else if (page_is_file_cache(page))
- ctype = MEM_CGROUP_CHARGE_TYPE_CACHE;
else
- ctype = MEM_CGROUP_CHARGE_TYPE_SHMEM;
+ ctype = MEM_CGROUP_CHARGE_TYPE_CACHE;
/*
* The page is committed to the memcg, but it's not actually
* charged to the res_counter since we plan on replacing the
@@ -3408,10 +3403,6 @@ void mem_cgroup_replace_page_cache(struct page *oldpage,
*/
if (!memcg)
return;
-
- if (PageSwapBacked(oldpage))
- type = MEM_CGROUP_CHARGE_TYPE_SHMEM;
-
/*
* Even if newpage->mapping was NULL before starting replacement,
* the newpage may be on LRU(or pagevec for LRU) already. We lock
--
1.7.7.6
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next prev parent reply other threads:[~2012-07-11 17:02 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-11 17:02 [patch 00/10] mm: memcg: charge/uncharge improvements v2 Johannes Weiner
2012-07-11 17:02 ` [patch 01/10] mm: memcg: fix compaction/migration failing due to memcg limits Johannes Weiner
2012-07-12 8:54 ` Wanpeng Li
2012-07-12 9:10 ` Wanpeng Li
2012-07-12 9:42 ` Johannes Weiner
2012-07-12 9:12 ` Johannes Weiner
2012-07-11 17:02 ` [patch 02/10] mm: swapfile: clean up unuse_pte race handling Johannes Weiner
2012-07-11 17:02 ` [patch 03/10] mm: memcg: push down PageSwapCache check into uncharge entry functions Johannes Weiner
2012-07-19 9:57 ` Kamezawa Hiroyuki
2012-07-11 17:02 ` [patch 04/10] mm: memcg: only check for PageSwapCache when uncharging anon Johannes Weiner
2012-07-11 17:02 ` [patch 05/10] mm: memcg: move swapin charge functions above callsites Johannes Weiner
2012-07-11 17:02 ` Johannes Weiner [this message]
2012-07-11 17:02 ` [patch 07/10] mm: memcg: remove needless !mm fixup to init_mm when charging Johannes Weiner
2012-07-11 17:02 ` [patch 08/10] mm: memcg: split swapin charge function into private and public part Johannes Weiner
2012-07-11 17:02 ` [patch 09/10] mm: memcg: only check swap cache pages for repeated charging Johannes Weiner
2012-07-11 17:02 ` [patch 10/10] mm: memcg: only check anon swapin page charges for swap cache Johannes Weiner
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