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| author | Bob Liu <lliubbo@gmail.com> | 2012-01-12 17:18:48 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-01-12 20:13:07 -0800 |
| commit | 9fb4b7cc0724f178d4b24a2a566ea1e7cb120b82 (patch) | |
| tree | 0f2db9102d46f5e5c8492864fb1bd21f2e7cd768 /mm/memcontrol.c | |
| parent | 40f23a21a8501c1b2c65c50c19b516488ac31313 (diff) | |
| download | blackbird-op-linux-9fb4b7cc0724f178d4b24a2a566ea1e7cb120b82.tar.gz blackbird-op-linux-9fb4b7cc0724f178d4b24a2a566ea1e7cb120b82.zip | |
page_cgroup: add helper function to get swap_cgroup
There are multiple places which need to get the swap_cgroup address, so
add a helper function:
static struct swap_cgroup *swap_cgroup_getsc(swp_entry_t ent,
struct swap_cgroup_ctrl **ctrl);
to simplify the code.
Signed-off-by: Bob Liu <lliubbo@gmail.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Johannes Weiner <jweiner@redhat.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 | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 71a9774e6ead..4c53e971749e 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -2474,7 +2474,7 @@ struct mem_cgroup *try_get_mem_cgroup_from_page(struct page *page) memcg = NULL; } else if (PageSwapCache(page)) { ent.val = page_private(page); - id = lookup_swap_cgroup(ent); + id = lookup_swap_cgroup_id(ent); rcu_read_lock(); memcg = mem_cgroup_lookup(id); if (memcg && !css_tryget(&memcg->css)) @@ -5264,7 +5264,7 @@ static int is_target_pte_for_mc(struct vm_area_struct *vma, } /* There is a swap entry and a page doesn't exist or isn't charged */ if (ent.val && !ret && - css_id(&mc.from->css) == lookup_swap_cgroup(ent)) { + css_id(&mc.from->css) == lookup_swap_cgroup_id(ent)) { ret = MC_TARGET_SWAP; if (target) target->ent = ent; |
