diff options
| author | KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> | 2008-07-25 01:47:09 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-25 10:53:37 -0700 |
| commit | 508b7be0a5b06b64203512ed9b34191cddc83f56 (patch) | |
| tree | 48b1be978a74d7c2b333efe8a2d1a1187bfe67f0 /mm/memcontrol.c | |
| parent | a181b0e888a1d917edcab57cd73ccf7d8e75a46c (diff) | |
| download | lwn-508b7be0a5b06b64203512ed9b34191cddc83f56.tar.gz lwn-508b7be0a5b06b64203512ed9b34191cddc83f56.zip | |
memcg: avoid unnecessary initialization
* remove over-killing initialization (in fast path)
* makeing the condition for PAGE_CGROUP_FLAG_ACTIVE be more obvious.
Signed-off-by: KAMEAZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Reviewed-by: Li Zefan <lizf@cn.fujitsu.com>
Acked-by: Balbir Singh <balbir@linux.vnet.ibm.com>
Acked-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/memcontrol.c')
| -rw-r--r-- | mm/memcontrol.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index c52c045f5152..90ccc1326356 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -296,7 +296,7 @@ static void __mem_cgroup_remove_list(struct mem_cgroup_per_zone *mz, MEM_CGROUP_ZSTAT(mz, MEM_CGROUP_ZSTAT_INACTIVE) -= 1; mem_cgroup_charge_statistics(pc->mem_cgroup, pc->flags, false); - list_del_init(&pc->lru); + list_del(&pc->lru); } static void __mem_cgroup_add_list(struct mem_cgroup_per_zone *mz, @@ -559,7 +559,7 @@ retry: } unlock_page_cgroup(page); - pc = kmem_cache_zalloc(page_cgroup_cache, gfp_mask); + pc = kmem_cache_alloc(page_cgroup_cache, gfp_mask); if (pc == NULL) goto err; @@ -606,9 +606,14 @@ retry: pc->ref_cnt = 1; pc->mem_cgroup = mem; pc->page = page; - pc->flags = PAGE_CGROUP_FLAG_ACTIVE; + /* + * If a page is accounted as a page cache, insert to inactive list. + * If anon, insert to active list. + */ if (ctype == MEM_CGROUP_CHARGE_TYPE_CACHE) pc->flags = PAGE_CGROUP_FLAG_CACHE; + else + pc->flags = PAGE_CGROUP_FLAG_ACTIVE; lock_page_cgroup(page); if (page_get_page_cgroup(page)) { |