From 79134171df238171daa4c024a42b77b401ccb00b Mon Sep 17 00:00:00 2001
From: Andrea Arcangeli <aarcange@redhat.com>
Date: Thu, 13 Jan 2011 15:46:58 -0800
Subject: thp: transparent hugepage vmstat

Add hugepage stat information to /proc/vmstat and /proc/meminfo.

Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Acked-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 mm/huge_memory.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'mm/huge_memory.c')

diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index a313403..7101112 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -751,6 +751,9 @@ static void __split_huge_page_refcount(struct page *page)
 		lru_add_page_tail(zone, page, page_tail);
 	}
 
+	__dec_zone_page_state(page, NR_ANON_TRANSPARENT_HUGEPAGES);
+	__mod_zone_page_state(zone, NR_ANON_PAGES, HPAGE_PMD_NR);
+
 	ClearPageCompound(page);
 	compound_unlock(page);
 	spin_unlock_irq(&zone->lru_lock);
-- 
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