From: David Anderson <dvander@xxxxxxxxxx>
EROFS images should inherit modification time rather than change time,
since users and host tooling have no easy way to control change time.
To reflect the new timestamp meaning, i_ctime and i_ctime_nsec are
renamed to i_mtime and i_mtime_nsec.
Signed-off-by: David Anderson <dvander@xxxxxxxxxx>
[ Gao Xiang: update document as well. ]
Signed-off-by: Gao Xiang <hsiangkao@xxxxxxxxxxxxxxxxx>