[PATCH] f2fs: clear page uptodate when dropping cache for atomic write

From	Chao Yu <chao2.yu@samsung.com>
Newsgroups	linux.kernel
Subject	[PATCH] f2fs: clear page uptodate when dropping cache for atomic write
Date	2015-11-13 11:30 +0100
Message-ID	<qujMf-5a8-39@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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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>
---
 fs/f2fs/segment.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index f77b325..23759fb 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -257,6 +257,7 @@ 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);
-- 
2.6.3


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[PATCH] f2fs: clear page uptodate when dropping cache for atomic write Chao Yu <chao2.yu@samsung.com> - 2015-11-13 11:30 +0100

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