From: Jaegeuk Kim <jaegeuk.kim@samsung.com>
To: unlisted-recipients:; (no To-header on input)
Cc: Jaegeuk Kim <jaegeuk.kim@samsung.com>,
linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-f2fs-devel@lists.sourceforge.net
Subject: [PATCH] f2fs: recover date requested by fdatasync
Date: Fri, 05 Jul 2013 14:22:52 +0900 [thread overview]
Message-ID: <1373001772-7013-1-git-send-email-jaegeuk.kim@samsung.com> (raw)
In order to support SQLite that uses fdatasync instead of fsync, we should
guarantee the data requested by fdatasync can be recovered after sudden-power-
off.
So, let's remove the fdatasync condition in f2fs_sync_file.
Otherwise, we can restore the data after sudden-power-off due to nonexistence
of any fsync mark'ed node blocks.
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
---
fs/f2fs/file.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index d2d2b7d..157a635 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -147,9 +147,10 @@ int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
mutex_lock(&inode->i_mutex);
- if (datasync && !(inode->i_state & I_DIRTY_DATASYNC))
- goto out;
-
+ /*
+ * Both of fdatasync() and fsync() are able to be recovered from
+ * sudden-power-off.
+ */
if (!S_ISREG(inode->i_mode) || inode->i_nlink != 1)
need_cp = true;
else if (file_wrong_pino(inode))
--
1.8.3.1.437.g0dbd812
reply other threads:[~2013-07-05 5:23 UTC|newest]
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