From: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Date: Tue, 31 Mar 2009 22:19:33 +0000 (-0700)
Subject: mm: don't call mark_page_accessed() in do_swap_page()
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=0a0dd05dd7e1a800241888cbf515bf8d3dc2e59c;p=openwrt%2Fstaging%2Fblogic.git

mm: don't call mark_page_accessed() in do_swap_page()

commit bf3f3bc5e734706730c12a323f9b2068052aa1f0 (mm: don't
mark_page_accessed in fault path) only remove the mark_page_accessed() in
filemap_fault().

Therefore, swap-backed pages and file-backed pages have inconsistent
behavior.  mark_page_accessed() should be removed from do_swap_page().

Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Nick Piggin <npiggin@suse.de>
Cc: Hugh Dickins <hugh@veritas.com>
Cc: Rik van Riel <riel@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/mm/memory.c b/mm/memory.c
index 2032ad2fc34b..0017111214c5 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -2435,8 +2435,6 @@ static int do_swap_page(struct mm_struct *mm, struct vm_area_struct *vma,
 		count_vm_event(PGMAJFAULT);
 	}
 
-	mark_page_accessed(page);
-
 	lock_page(page);
 	delayacct_clear_flag(DELAYACCT_PF_SWAPIN);