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| author | Qiang Huang <h.huangqiang@huawei.com> | 2014-06-05 03:08:22 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-06-05 03:54:06 +0400 |
| commit | b5ffc8560cf758422e85b786cca32cd7e1513a7f (patch) | |
| tree | f0f7df8283a94d89f7941f6f0460f85d144448f4 | |
| parent | bdcbb659fe630fc64f6604e99a180bb2ccc630c2 (diff) | |
| download | linux-b5ffc8560cf758422e85b786cca32cd7e1513a7f.tar.xz | |
memcg: correct comments for __mem_cgroup_begin_update_page_stat
Signed-off-by: Qiang Huang <h.huangqiang@huawei.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | mm/memcontrol.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 4a9dfc83643d..971d7b643f6e 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -2276,12 +2276,11 @@ cleanup: } /* - * Currently used to update mapped file statistics, but the routine can be - * generalized to update other statistics as well. + * Used to update mapped file or writeback or other statistics. * * Notes: Race condition * - * We usually use page_cgroup_lock() for accessing page_cgroup member but + * We usually use lock_page_cgroup() for accessing page_cgroup member but * it tends to be costly. But considering some conditions, we doesn't need * to do so _always_. * @@ -2295,8 +2294,8 @@ cleanup: * by flags. * * Considering "move", this is an only case we see a race. To make the race - * small, we check mm->moving_account and detect there are possibility of race - * If there is, we take a lock. + * small, we check memcg->moving_account and detect there are possibility + * of race or not. If there is, we take a lock. */ void __mem_cgroup_begin_update_page_stat(struct page *page, |