130 	struct grant_map *add;  in gntdev_alloc_map()  local
133 	add = kzalloc(sizeof(struct grant_map), GFP_KERNEL);  in gntdev_alloc_map()
134 	if (NULL == add)  in gntdev_alloc_map()
137 	add->grants    = kcalloc(count, sizeof(add->grants[0]), GFP_KERNEL);  in gntdev_alloc_map()
138 	add->map_ops   = kcalloc(count, sizeof(add->map_ops[0]), GFP_KERNEL);  in gntdev_alloc_map()
139 	add->unmap_ops = kcalloc(count, sizeof(add->unmap_ops[0]), GFP_KERNEL);  in gntdev_alloc_map()
140 	add->kmap_ops  = kcalloc(count, sizeof(add->kmap_ops[0]), GFP_KERNEL);  in gntdev_alloc_map()
141 	add->pages     = kcalloc(count, sizeof(add->pages[0]), GFP_KERNEL);  in gntdev_alloc_map()
142 	if (NULL == add->grants    ||  in gntdev_alloc_map()
143 	    NULL == add->map_ops   ||  in gntdev_alloc_map()
144 	    NULL == add->unmap_ops ||  in gntdev_alloc_map()
145 	    NULL == add->kmap_ops  ||  in gntdev_alloc_map()
146 	    NULL == add->pages)  in gntdev_alloc_map()
149 	if (alloc_xenballooned_pages(count, add->pages, false /* lowmem */))  in gntdev_alloc_map()
153 		add->map_ops[i].handle = -1;  in gntdev_alloc_map()
154 		add->unmap_ops[i].handle = -1;  in gntdev_alloc_map()
155 		add->kmap_ops[i].handle = -1;  in gntdev_alloc_map()
158 	add->index = 0;  in gntdev_alloc_map()
159 	add->count = count;  in gntdev_alloc_map()
160 	atomic_set(&add->users, 1);  in gntdev_alloc_map()
162 	return add;  in gntdev_alloc_map()
165 	gntdev_free_map(add);  in gntdev_alloc_map()
169 static void gntdev_add_map(struct gntdev_priv *priv, struct grant_map *add)  in gntdev_add_map()  argument
174 		if (add->index + add->count < map->index) {  in gntdev_add_map()
175 			list_add_tail(&add->next, &map->next);  in gntdev_add_map()
178 		add->index = map->index + map->count;  in gntdev_add_map()
180 	list_add_tail(&add->next, &priv->maps);  in gntdev_add_map()
183 	gntdev_print_maps(priv, "[new]", add->index);  in gntdev_add_map()