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| author | Minchan Kim <minchan.kim@gmail.com> | 2010-12-22 04:24:16 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-12-23 06:43:33 +0300 |
| commit | dd9e5efe3aa9fc5b1ce484a531ecdba3a7a30bbf (patch) | |
| tree | 2ccf4d51b423706db976c5eab214d0e23195461b | |
| parent | 90a8a73c06cc32b609a880d48449d7083327e11a (diff) | |
| download | linux-dd9e5efe3aa9fc5b1ce484a531ecdba3a7a30bbf.tar.xz | |
mm/compaction.c: avoid double mem_cgroup_del_lru()
del_page_from_lru_list() already called mem_cgroup_del_lru(). So we must
not call it again. It adds unnecessary overhead.
It was not a runtime bug because the TestClearPageCgroupAcctLRU() early in
mem_cgroup_del_lru_list() will prevent any double-deletion, etc.
Signed-off-by: Minchan Kim <minchan.kim@gmail.com>
Acked-by: Balbir Singh <balbir@linux.vnet.ibm.com>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: Mel Gorman <mel@csn.ul.ie>
Reviewed-by: 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/compaction.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/mm/compaction.c b/mm/compaction.c index 4d709ee59013..1a8894eadf72 100644 --- a/mm/compaction.c +++ b/mm/compaction.c @@ -279,7 +279,6 @@ static unsigned long isolate_migratepages(struct zone *zone, /* Successfully isolated */ del_page_from_lru_list(zone, page, page_lru(page)); list_add(&page->lru, migratelist); - mem_cgroup_del_lru(page); cc->nr_migratepages++; /* Avoid isolating too much */ |