From 41e9b63b35b52cf918a4ffdb8d77862ab824aa8b Mon Sep 17 00:00:00 2001
From: Nick Piggin <nickpiggin@yahoo.com.au>
Date: Fri, 6 Jan 2006 00:11:13 -0800
Subject: [PATCH] mm: pfault optimisation

This atomic operation is superfluous: the pte will be added with the
referenced bit set, and the page will be referenced through this mapping after
the page fault handler returns anyway.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Cc: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 mm/memory.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/mm/memory.c b/mm/memory.c
index d7ca7de10f4..7197f9bcd38 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1977,7 +1977,6 @@ static int do_anonymous_page(struct mm_struct *mm, struct vm_area_struct *vma,
 			goto release;
 		inc_mm_counter(mm, anon_rss);
 		lru_cache_add_active(page);
-		SetPageReferenced(page);
 		page_add_new_anon_rmap(page, vma, address);
 	} else {
 		/* Map the ZERO_PAGE - vm_page_prot is readonly */
-- 
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