vcache_vnid_to_loc
status_t status = vcache_vnid_to_loc(bsdVolume, vnid, &location);
status_t vcache_vnid_to_loc(mount* vol, ino_t vnid, ino_t* loc);
#define find_vnid_in_vcache(vol,vnid) vcache_vnid_to_loc(vol,vnid,NULL)