linux-kernel - [PATCH 2/2] f2fs: commit atomic written page in LFS mode

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Message-id: <01ab01d11166$f9579ce0$ec06d6a0$@samsung.com>
Date:	Wed, 28 Oct 2015 17:56:14 +0800
From:	Chao Yu <chao2.yu@...sung.com>
To:	Jaegeuk Kim <jaegeuk@...nel.org>
Cc:	linux-f2fs-devel@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] f2fs: commit atomic written page in LFS mode

We should always commit atomic written pages in LFS mode, otherwise data
will become corrupted if we encounter suddent power cut after partial
pages committed in IPU mode.

Signed-off-by: Chao Yu <chao2.yu@...sung.com>
---
 fs/f2fs/data.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index e070ac0..509caee 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -1093,6 +1093,7 @@ int do_write_data_page(struct f2fs_io_info *fio)
 	 */
 	if (unlikely(fio->blk_addr != NEW_ADDR &&
 			!is_cold_data(page) &&
+			!IS_ATOMIC_WRITTEN_PAGE(page) &&
 			need_inplace_update(inode))) {
 		rewrite_data_page(fio);
 		set_inode_flag(F2FS_I(inode), FI_UPDATE_WRITE);
-- 
2.6.1


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