From 745ad48e8cac47beec0b2f72dc3c64424bce1fec Mon Sep 17 00:00:00 2001
From: Yan Zheng <yanzheng@21cn.com>
Date: Mon, 8 Oct 2007 10:08:37 -0700
Subject: [PATCH] fix page release issue in filemap_fault

find_lock_page increases page's usage count, we should decrease it
before return VM_FAULT_SIGBUS

Signed-off-by: Yan Zheng<yanzheng@21cn.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 mm/filemap.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/mm/filemap.c b/mm/filemap.c
index 90b657b50f8..15c8413ee92 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -1388,6 +1388,7 @@ retry_find:
 	size = (i_size_read(inode) + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
 	if (unlikely(vmf->pgoff >= size)) {
 		unlock_page(page);
+		page_cache_release(page);
 		goto outside_data_content;
 	}
 
-- 
2.20.1