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| author | Hugh Dickins <hughd@google.com> | 2012-05-29 15:06:52 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-05-29 16:22:24 -0700 |
| commit | 86493009d3b7e51eee38575f9537b754f5b6c536 (patch) | |
| tree | 2a9c53575daed7b025fee2c728e102095d364749 /mm | |
| parent | e91cbb42531626cd4fd0673ca01daf53e338d8f9 (diff) | |
| download | blackbird-op-linux-86493009d3b7e51eee38575f9537b754f5b6c536.tar.gz blackbird-op-linux-86493009d3b7e51eee38575f9537b754f5b6c536.zip | |
memcg swap: use mem_cgroup_uncharge_swap()
That stuff __mem_cgroup_commit_charge_swapin() does with a swap entry, it
has a name and even a declaration: just use mem_cgroup_uncharge_swap().
Signed-off-by: Hugh Dickins <hughd@google.com>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/memcontrol.c | 19 |
1 files changed, 1 insertions, 18 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index d5ba631e0ec7..30f938c86453 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -2855,24 +2855,7 @@ __mem_cgroup_commit_charge_swapin(struct page *page, struct mem_cgroup *memcg, */ if (do_swap_account && PageSwapCache(page)) { swp_entry_t ent = {.val = page_private(page)}; - struct mem_cgroup *swap_memcg; - unsigned short id; - - id = swap_cgroup_record(ent, 0); - rcu_read_lock(); - swap_memcg = mem_cgroup_lookup(id); - if (swap_memcg) { - /* - * This recorded memcg can be obsolete one. So, avoid - * calling css_tryget - */ - if (!mem_cgroup_is_root(swap_memcg)) - res_counter_uncharge(&swap_memcg->memsw, - PAGE_SIZE); - mem_cgroup_swap_statistics(swap_memcg, false); - mem_cgroup_put(swap_memcg); - } - rcu_read_unlock(); + mem_cgroup_uncharge_swap(ent); } /* * At swapin, we may charge account against cgroup which has no tasks. |
