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

[Greg Kroah-Hartman]

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

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

From: Jia Zhu <zhujia13@xxxxxxxxxx>

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@xxxxxxxxxxxxxxx>
Fixes: 511f52d02f05 ("f2fs: allow out-place-update for direct IO in LFS mode")
Signed-off-by: Jia Zhu <zhujia13@xxxxxxxxxx>
Reviewed-by: Chao Yu <yuchao0@xxxxxxxxxx>
Signed-off-by: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 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) {