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authorDaisuke Nishimura <nishimura@mxp.nes.nec.co.jp>2010-08-10 18:02:59 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-08-11 08:59:19 -0700
commit73045c47b6facbdf4656e6763c8cb469de4337e2 (patch)
treee791667803261eb9ae5325dcd8c70acefeee9196 /mm/memcontrol.c
parentbd0d24bfe8a8f8d2400569740874a67d164d40a9 (diff)
downloadvexpress-lsk-73045c47b6facbdf4656e6763c8cb469de4337e2.tar.gz
memcg: remove mem from arg of charge_common
mem_cgroup_charge_common() is always called with @mem = NULL, so it's meaningless. This patch removes it. Signed-off-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Cc: Balbir Singh <balbir@linux.vnet.ibm.com> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> 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.c17
1 files changed, 8 insertions, 9 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 79a53f0f0cf..ea5f5edf00b 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -2018,10 +2018,9 @@ out:
* < 0 if the cgroup is over its limit
*/
static int mem_cgroup_charge_common(struct page *page, struct mm_struct *mm,
- gfp_t gfp_mask, enum charge_type ctype,
- struct mem_cgroup *memcg)
+ gfp_t gfp_mask, enum charge_type ctype)
{
- struct mem_cgroup *mem;
+ struct mem_cgroup *mem = NULL;
struct page_cgroup *pc;
int ret;
@@ -2031,7 +2030,6 @@ static int mem_cgroup_charge_common(struct page *page, struct mm_struct *mm,
return 0;
prefetchw(pc);
- mem = memcg;
ret = __mem_cgroup_try_charge(mm, gfp_mask, &mem, true);
if (ret || !mem)
return ret;
@@ -2059,7 +2057,7 @@ int mem_cgroup_newpage_charge(struct page *page,
if (unlikely(!mm))
mm = &init_mm;
return mem_cgroup_charge_common(page, mm, gfp_mask,
- MEM_CGROUP_CHARGE_TYPE_MAPPED, NULL);
+ MEM_CGROUP_CHARGE_TYPE_MAPPED);
}
static void
@@ -2069,7 +2067,6 @@ __mem_cgroup_commit_charge_swapin(struct page *page, struct mem_cgroup *ptr,
int mem_cgroup_cache_charge(struct page *page, struct mm_struct *mm,
gfp_t gfp_mask)
{
- struct mem_cgroup *mem = NULL;
int ret;
if (mem_cgroup_disabled())
@@ -2101,22 +2098,24 @@ int mem_cgroup_cache_charge(struct page *page, struct mm_struct *mm,
unlock_page_cgroup(pc);
}
- if (unlikely(!mm && !mem))
+ if (unlikely(!mm))
mm = &init_mm;
if (page_is_file_cache(page))
return mem_cgroup_charge_common(page, mm, gfp_mask,
- MEM_CGROUP_CHARGE_TYPE_CACHE, NULL);
+ MEM_CGROUP_CHARGE_TYPE_CACHE);
/* shmem */
if (PageSwapCache(page)) {
+ struct mem_cgroup *mem = NULL;
+
ret = mem_cgroup_try_charge_swapin(mm, page, gfp_mask, &mem);
if (!ret)
__mem_cgroup_commit_charge_swapin(page, mem,
MEM_CGROUP_CHARGE_TYPE_SHMEM);
} else
ret = mem_cgroup_charge_common(page, mm, gfp_mask,
- MEM_CGROUP_CHARGE_TYPE_SHMEM, mem);
+ MEM_CGROUP_CHARGE_TYPE_SHMEM);
return ret;
}