diff options
author | KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> | 2012-05-29 15:07:04 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-05-29 16:22:27 -0700 |
commit | 2f3479b1478e223f142fe9cd27a2d2a4c3573c53 (patch) | |
tree | 87290215e74631106498dde89c43fa378bf9ede1 /mm/memcontrol.c | |
parent | cc926f78420705817b807dbec0c5d3643827eba3 (diff) | |
download | linux-3.10-2f3479b1478e223f142fe9cd27a2d2a4c3573c53.tar.gz linux-3.10-2f3479b1478e223f142fe9cd27a2d2a4c3573c53.tar.bz2 linux-3.10-2f3479b1478e223f142fe9cd27a2d2a4c3573c53.zip |
memcg: don't uncharge in mem_cgroup_move_account()
Now, all callers pass 'false' for 'bool uncharge' so remove this argument.
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ying Han <yinghan@google.com>
Cc: Glauber Costa <glommer@parallels.com>
Reviewed-by: Tejun Heo <tj@kernel.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 | 20 |
1 files changed, 6 insertions, 14 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 96cd9ebefb2..37bae5571a4 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -2592,23 +2592,19 @@ void mem_cgroup_split_huge_fixup(struct page *head) * @pc: page_cgroup of the page. * @from: mem_cgroup which the page is moved from. * @to: mem_cgroup which the page is moved to. @from != @to. - * @uncharge: whether we should call uncharge and css_put against @from. * * The caller must confirm following. * - page is not on LRU (isolate_page() is useful.) * - compound_lock is held when nr_pages > 1 * - * This function doesn't do "charge" nor css_get to new cgroup. It should be - * done by a caller(__mem_cgroup_try_charge would be useful). If @uncharge is - * true, this function does "uncharge" from old cgroup, but it doesn't if - * @uncharge is false, so a caller should do "uncharge". + * This function doesn't do "charge" to new cgroup and doesn't do "uncharge" + * from old cgroup. */ static int mem_cgroup_move_account(struct page *page, unsigned int nr_pages, struct page_cgroup *pc, struct mem_cgroup *from, - struct mem_cgroup *to, - bool uncharge) + struct mem_cgroup *to) { unsigned long flags; int ret; @@ -2642,9 +2638,6 @@ static int mem_cgroup_move_account(struct page *page, preempt_enable(); } mem_cgroup_charge_statistics(from, anon, -nr_pages); - if (uncharge) - /* This is not "cancel", but cancel_charge does all we need. */ - __mem_cgroup_cancel_charge(from, nr_pages); /* caller should have done css_get */ pc->mem_cgroup = to; @@ -2706,7 +2699,7 @@ static int mem_cgroup_move_parent(struct page *page, flags = compound_lock_irqsave(page); ret = mem_cgroup_move_account(page, nr_pages, - pc, child, parent, false); + pc, child, parent); if (!ret) __mem_cgroup_cancel_local_charge(child, nr_pages); @@ -5474,8 +5467,7 @@ static int mem_cgroup_move_charge_pte_range(pmd_t *pmd, if (!isolate_lru_page(page)) { pc = lookup_page_cgroup(page); if (!mem_cgroup_move_account(page, HPAGE_PMD_NR, - pc, mc.from, mc.to, - false)) { + pc, mc.from, mc.to)) { mc.precharge -= HPAGE_PMD_NR; mc.moved_charge += HPAGE_PMD_NR; } @@ -5505,7 +5497,7 @@ retry: goto put; pc = lookup_page_cgroup(page); if (!mem_cgroup_move_account(page, 1, pc, - mc.from, mc.to, false)) { + mc.from, mc.to)) { mc.precharge--; /* we uncharge from mc.from later. */ mc.moved_charge++; |