smbfs_invalidate_pages
void smbfs_invalidate_pages(vnode_t *vp, u_offset_t off, cred_t *cr);
smbfs_invalidate_pages(vp,
smbfs_invalidate_pages(vp, (u_offset_t)0, cr);
smbfs_invalidate_pages(vp, (u_offset_t)0, cr);