diff options
| author | Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> | 2010-08-10 18:02:59 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-08-11 08:59:19 -0700 |
| commit | 73045c47b6facbdf4656e6763c8cb469de4337e2 (patch) | |
| tree | e791667803261eb9ae5325dcd8c70acefeee9196 /mm/memcontrol.c | |
| parent | bd0d24bfe8a8f8d2400569740874a67d164d40a9 (diff) | |
| download | lwn-73045c47b6facbdf4656e6763c8cb469de4337e2.tar.gz lwn-73045c47b6facbdf4656e6763c8cb469de4337e2.zip | |
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.c | 17 |
1 files changed, 8 insertions, 9 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 79a53f0f0cf5..ea5f5edf00b7 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; } |