From: Chao Yu <yuchao0@huawei.com>
Date: Fri, 29 Apr 2016 12:09:15 +0000 (+0800)
Subject: f2fs: fix to clear private data in page
X-Git-Tag: v4.7-rc1~84^2~48
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=23dc974eed576b2464b222a892272073adf6a92c;p=karo-tx-linux.git

f2fs: fix to clear private data in page

Private data in page should be removed during ->releasepage or
->invalidatepage, otherwise garbage data would be remained in that page.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 38ce5d6f8583..888f1781ae0b 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -1723,6 +1723,7 @@ void f2fs_invalidate_page(struct page *page, unsigned int offset,
 	if (IS_ATOMIC_WRITTEN_PAGE(page))
 		return;
 
+	set_page_private(page, 0);
 	ClearPagePrivate(page);
 }
 
@@ -1736,6 +1737,7 @@ int f2fs_release_page(struct page *page, gfp_t wait)
 	if (IS_ATOMIC_WRITTEN_PAGE(page))
 		return 0;
 
+	set_page_private(page, 0);
 	ClearPagePrivate(page);
 	return 1;
 }