In LFS mode, por_fsstress testcase reports a bug as below:

[ASSERT] (fsck_chk_inode_blk: 931)  --> ino: 0x12fe has wrong ext: [pgofs:142, 
blk:215424, len:16]

Since commit f847c699cff3 ("f2fs: allow out-place-update for direct
IO in LFS mode"), we start to allow OPU mode for direct IO, however,
we missed to update extent cache in __allocate_data_block(), finally,
it cause extent field being inconsistent with physical block address,
fix it.

Fixes: f847c699cff3 ("f2fs: allow out-place-update for direct IO in LFS mode")
Signed-off-by: Chao Yu <yuch...@huawei.com>
---
 fs/f2fs/data.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index bf648c8c50ad..727df32382c6 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -1018,7 +1018,7 @@ static int __allocate_data_block(struct dnode_of_data 
*dn, int seg_type)
        if (GET_SEGNO(sbi, old_blkaddr) != NULL_SEGNO)
                invalidate_mapping_pages(META_MAPPING(sbi),
                                        old_blkaddr, old_blkaddr);
-       f2fs_set_data_blkaddr(dn);
+       f2fs_update_data_blkaddr(dn, dn->data_blkaddr);
 
        /*
         * i_size will be updated by direct_IO. Otherwise, we'll get stale
-- 
2.18.0.rc1

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