mm: move mem_cgroup_uncharge out of __page_cache_release()
authorYang Shi <yang.shi@linux.alibaba.com>
Mon, 23 Sep 2019 22:38:09 +0000 (15:38 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Tue, 24 Sep 2019 22:54:11 +0000 (15:54 -0700)
commit7ae88534cdd96235cd775c03b32a75009355740b
tree51adc256778558ed4ec74e65f13c1bc964a37f20
parent364c1eebe453f06f0c1e837eb155a5725c9cd272
mm: move mem_cgroup_uncharge out of __page_cache_release()

A later patch makes THP deferred split shrinker memcg aware, but it needs
page->mem_cgroup information in THP destructor, which is called after
mem_cgroup_uncharge() now.

So move mem_cgroup_uncharge() from __page_cache_release() to compound page
destructor, which is called by both THP and other compound pages except
HugeTLB.  And call it in __put_single_page() for single order page.

Link: http://lkml.kernel.org/r/1565144277-36240-3-git-send-email-yang.shi@linux.alibaba.com
Signed-off-by: Yang Shi <yang.shi@linux.alibaba.com>
Suggested-by: "Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reviewed-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Shakeel Butt <shakeelb@google.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Qian Cai <cai@lca.pw>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mm/page_alloc.c
mm/swap.c
mm/vmscan.c