From: Chao Yu <chao2.yu@samsung.com>
Date: Fri, 13 Nov 2015 10:27:35 +0000 (+0800)
Subject: f2fs: clear page uptodate when dropping cache for atomic write
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=f478f43fa0d8f38537848d298980955244afdaee;p=openwrt%2Fstaging%2Fblogic.git

f2fs: clear page uptodate when dropping cache for atomic write

We should clear uptodate flag for all pages atomic written when we drop
them, otherwise before these cached pages were reclaimed or invalidated
eventually, we will see invalid data when hitting them again.

Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---

diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index efbf6b5f1dc3..ed2c5dec7526 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -247,6 +247,7 @@ int commit_inmem_pages(struct inode *inode, bool abort)
 				submit_bio = true;
 			}
 		} else {
+			ClearPageUptodate(cur->page);
 			trace_f2fs_commit_inmem_page(cur->page, INMEM_DROP);
 		}
 		set_page_private(cur->page, 0);