The functions zfs_mount_label_policy(), zfs_mountroot(), zfs_mount() will not be needed because most of what they do is already handled by the generic Linux VFS layer. They all call zfs_domount() which creates the actual dataset, the caller of this library call which will be in the zpl layer is responsible for what's left.
Native ZFS for Linux! ZFS is an advanced file system and volume manager which was originally developed for Solaris. It has been successfully ported to FreeBSD and now there is a functional Linux ZFS kernel port too. The port currently includes a fully functional and stable SPA, DMU, and ZVOL with a ZFS Posix Layer (ZPL) on the way!
$ ./configure
$ make pkg
Full documentation for building, configuring, and using ZFS can be found at: http://zfsonlinux.org
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