ufsd94 not working on lede 4.4.71 kernel

[imnobodyet]

Compile and build ufsd against lede 4.4.71 kernel succeed, and the kmod is loaded without error on a
mips board(ar9344), but when mounting, it always says
"ufsd: No write support. Marking filesystem read-only", thus the ntfs partition is mounted as read only,
also the "df" cmd shows something strange:
"/dev/sda 380.5P 380.5P 3.6G", P? it's only a 64G udisk.

The ntfs-3g tool can mount the same partition on the same board under the same firmware.