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| author | Johannes Weiner <hannes@cmpxchg.org> | 2011-03-23 16:42:31 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-23 19:46:28 -0700 |
| commit | 4dc03de1b29901b61cb27e4cab44a7f578dc0fc9 (patch) | |
| tree | 4edca28cf1636015eacd8012023804e4f27b2e34 | |
| parent | 6b3ae58efca06623c197fd6d91ded4aa3a8fe039 (diff) | |
| download | linux-3.10-4dc03de1b29901b61cb27e4cab44a7f578dc0fc9.tar.gz linux-3.10-4dc03de1b29901b61cb27e4cab44a7f578dc0fc9.tar.bz2 linux-3.10-4dc03de1b29901b61cb27e4cab44a7f578dc0fc9.zip | |
memcg: charged pages always have valid per-memcg zone info
page_cgroup_zoneinfo() will never return NULL for a charged page, remove
the check for it in mem_cgroup_get_reclaim_stat_from_page().
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Cc: Balbir Singh <balbir@linux.vnet.ibm.com>
Reviewed-by: Minchan Kim <minchan.kim@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | mm/memcontrol.c | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 660dfc27d97..b35a28d80ab 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -1043,9 +1043,6 @@ mem_cgroup_get_reclaim_stat_from_page(struct page *page) /* Ensure pc->mem_cgroup is visible after reading PCG_USED. */ smp_rmb(); mz = page_cgroup_zoneinfo(pc->mem_cgroup, page); - if (!mz) - return NULL; - return &mz->reclaim_stat; } |