[patch 6/8] mm: memcg: remove unneeded checks from uncharge_page()

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From: Johannes Weiner <jweiner@xxxxxxxxxx>

mem_cgroup_uncharge_page() is only called on either freshly allocated
pages without page->mapping or on rmapped PageAnon() pages.  There is
no need to check for a page->mapping that is not an anon_vma.

Signed-off-by: Johannes Weiner <jweiner@xxxxxxxxxx>
---
 mm/memcontrol.c |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 0d10be4..b9a3b94 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -2989,8 +2989,6 @@ void mem_cgroup_uncharge_page(struct page *page)
 	/* early check. */
 	if (page_mapped(page))
 		return;
-	if (page->mapping && !PageAnon(page))
-		return;
 	__mem_cgroup_uncharge_common(page, MEM_CGROUP_CHARGE_TYPE_MAPPED);
 }
 
-- 
1.7.6.4

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