ext4: use proper csum calculation in ext4_rename
In ext4_rename, when the old name is a dir, we need to change ".." to its new parent and journal the change, so with metadata_csum enabled, we have to re-calc the csum. As the first block of the dir can be either a htree root or a normal directory block and we have different csum calculation for these 2 types, we have to choose the right one in ext4_rename. btw, it is found by xfstests 013. Signed-off-by:Tao Ma <boyu.mt@taobao.com> Signed-off-by:
"Theodore Ts'o" <tytso@mit.edu> Acked-by:
Darrick J. Wong <djwong@us.ibm.com>
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