linux-kernel - [PATCH 1/2] thp: fix anononymous page accounting in fallback path for COW of HZP

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Message-Id: <1354287821-5925-2-git-send-email-kirill.shutemov@linux.intel.com>
Date:	Fri, 30 Nov 2012 17:03:40 +0200
From:	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
To:	Jiri Slaby <jslaby@...e.cz>
Cc:	linux-mm@...ck.org, LKML <linux-kernel@...r.kernel.org>,
	David Rientjes <rientjes@...gle.com>,
	Bob Liu <lliubbo@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Andrea Arcangeli <aarcange@...hat.com>,
	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
Subject: [PATCH 1/2] thp: fix anononymous page accounting in fallback path for COW of HZP

From: "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>

Don't forget to account newly allocated page in fallback path for
copy-on-write of huge zero page.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>
---
 mm/huge_memory.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 57f0024..9d6f521 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -1164,6 +1164,7 @@ static int do_huge_pmd_wp_zero_page_fallback(struct mm_struct *mm,
 	pmd_populate(mm, pmd, pgtable);
 	spin_unlock(&mm->page_table_lock);
 	put_huge_zero_page();
+	inc_mm_counter(mm, MM_ANONPAGES);
 
 	mmu_notifier_invalidate_range_end(mm, mmun_start, mmun_end);
 
-- 
1.7.11.7

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