linux-kernel - [PATCH 4.20 105/145] f2fs: fix to update new block address correctly for OPU

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Date:   Mon,  7 Jan 2019 13:32:22 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Jia Zhu <zhujia13@...wei.com>,
        Chao Yu <yuchao0@...wei.com>, Jaegeuk Kim <jaegeuk@...nel.org>
Subject: [PATCH 4.20 105/145] f2fs: fix to update new block address correctly for OPU

4.20-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Jia Zhu <zhujia13@...wei.com>

commit 73c0a9272a7d2942bcae29d4829bf63277cc57c8 upstream.

Previously, we allocated a new block address for OPU mode in direct_IO.

But the new address couldn't be assigned to @map->m_pblk correctly.

This patch fix it.

Cc: <stable@...r.kernel.org>
Fixes: 511f52d02f05 ("f2fs: allow out-place-update for direct IO in LFS mode")
Signed-off-by: Jia Zhu <zhujia13@...wei.com>
Reviewed-by: Chao Yu <yuchao0@...wei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 fs/f2fs/data.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -1102,8 +1102,10 @@ next_block:
 		if (test_opt(sbi, LFS) && create &&
 				flag == F2FS_GET_BLOCK_DIO) {
 			err = __allocate_data_block(&dn, map->m_seg_type);
-			if (!err)
+			if (!err) {
+				blkaddr = dn.data_blkaddr;
 				set_inode_flag(inode, FI_APPEND_WRITE);
+			}
 		}
 	} else {
 		if (create) {