- Change lfs_valloc() to return an inode number and version instead of
a vnode and move lfs_ialloc() and lfs_vcreate() to new lfs_init_vnode().
- Add lfs_valloc_fixed() to allocate a known inode, used by kernel
roll forward.
- Remove lfs_*ref(), these functions cannot coexist with vcache and
their commented behaviour is far away from their implementation.
- Add the cleaner lwp and blockinfo to struct ulfsmount so lfs_loadvnode()
may use hints from the cleaner.
- Remove vnode locks from ulfs_lookup() like we did with ufs_lookup().
d8868b1ee7