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	*/			*/
	static int			static int
	mmap_gref(struct per_user_data priv_user, struct gntdev_gref gref_start,			mmap_gref(struct per_user_data priv_user, struct gntdev_gref gref_start,
	uint32_t count, vm_size_t size, struct vm_object **object)			uint32_t count, vm_size_t size, struct vm_object **object)
	{			{
	vm_object_t mem_obj;			vm_object_t mem_obj;
	struct gntdev_gref *gref;			struct gntdev_gref *gref;

	mem_obj = vm_object_allocate(OBJT_PHYS, size);			mem_obj = vm_pager_allocate(OBJT_PHYS, NULL, size, VM_PROT_ALL, 0,
				curthread->td_ucred);
	if (mem_obj == NULL)			if (mem_obj == NULL)
	return (ENOMEM);			return (ENOMEM);

	mtx_lock(&priv_user->user_data_lock);			mtx_lock(&priv_user->user_data_lock);
	VM_OBJECT_WLOCK(mem_obj);			VM_OBJECT_WLOCK(mem_obj);
	for (gref = gref_start; gref != NULL && count > 0; gref =			for (gref = gref_start; gref != NULL && count > 0; gref =
	RB_NEXT(gref_tree_head, &priv_user->gref_tree, gref)) {			RB_NEXT(gref_tree_head, &priv_user->gref_tree, gref)) {
	if (gref->page->object)			if (gref->page->object)
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