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| author | Johannes Weiner <hannes@cmpxchg.org> | 2011-03-23 16:42:23 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-23 19:46:24 -0700 |
| commit | c14f35c70e068392ccae0b2d6f755baea5eed4d6 (patch) | |
| tree | 1e3265ba63a859ee0b45ae89303afea4de19012c | |
| parent | 3403968d7a7dc373901cad0cad56b3afcb09cc50 (diff) | |
| download | blackbird-op-linux-c14f35c70e068392ccae0b2d6f755baea5eed4d6.tar.gz blackbird-op-linux-c14f35c70e068392ccae0b2d6f755baea5eed4d6.zip | |
memcg: remove impossible conditional when committing
No callsite ever passes a NULL pointer for a struct mem_cgroup * to the
committing function. There is no need to check for it.
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>
Cc: 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 | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 0595e2b184a2..b94cd24c5baa 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -2118,10 +2118,6 @@ static void __mem_cgroup_commit_charge(struct mem_cgroup *mem, { int nr_pages = page_size >> PAGE_SHIFT; - /* try_charge() can return NULL to *memcg, taking care of it. */ - if (!mem) - return; - lock_page_cgroup(pc); if (unlikely(PageCgroupUsed(pc))) { unlock_page_cgroup(pc); |
