228 	struct reada_zone *zone;  in reada_find_zone()  local
234 	zone = NULL;  in reada_find_zone()
236 	ret = radix_tree_gang_lookup(&dev->reada_zones, (void **)&zone,  in reada_find_zone()
238 	if (ret == 1 && logical >= zone->start && logical <= zone->end) {  in reada_find_zone()
239 		kref_get(&zone->refcnt);  in reada_find_zone()
241 		return zone;  in reada_find_zone()
254 	zone = kzalloc(sizeof(*zone), GFP_KERNEL);  in reada_find_zone()
255 	if (!zone)  in reada_find_zone()
260 		kfree(zone);  in reada_find_zone()
264 	zone->start = start;  in reada_find_zone()
265 	zone->end = end;  in reada_find_zone()
266 	INIT_LIST_HEAD(&zone->list);  in reada_find_zone()
267 	spin_lock_init(&zone->lock);  in reada_find_zone()
268 	zone->locked = 0;  in reada_find_zone()
269 	kref_init(&zone->refcnt);  in reada_find_zone()
270 	zone->elems = 0;  in reada_find_zone()
271 	zone->device = dev; /* our device always sits at index 0 */  in reada_find_zone()
274 		zone->devs[i] = bbio->stripes[i].dev;  in reada_find_zone()
276 	zone->ndevs = bbio->num_stripes;  in reada_find_zone()
280 				(unsigned long)(zone->end >> PAGE_SHIFT),  in reada_find_zone()
281 				zone);  in reada_find_zone()
284 		kfree(zone);  in reada_find_zone()
285 		ret = radix_tree_gang_lookup(&dev->reada_zones, (void **)&zone,  in reada_find_zone()
287 		if (ret == 1 && logical >= zone->start && logical <= zone->end)  in reada_find_zone()
288 			kref_get(&zone->refcnt);  in reada_find_zone()
290 			zone = NULL;  in reada_find_zone()
295 	return zone;  in reada_find_zone()
352 		struct reada_zone *zone;  in reada_find_extent()  local
360 		zone = reada_find_zone(dev, logical, bbio);  in reada_find_extent()
361 		if (!zone)  in reada_find_extent()
364 		re->zones[re->nzones++] = zone;  in reada_find_extent()
365 		spin_lock(&zone->lock);  in reada_find_extent()
366 		if (!zone->elems)  in reada_find_extent()
367 			kref_get(&zone->refcnt);  in reada_find_extent()
368 		++zone->elems;  in reada_find_extent()
369 		spin_unlock(&zone->lock);  in reada_find_extent()
371 		kref_put(&zone->refcnt, reada_zone_release);  in reada_find_extent()
456 		struct reada_zone *zone;  in reada_find_extent()  local
458 		zone = re->zones[nzones];  in reada_find_extent()
459 		kref_get(&zone->refcnt);  in reada_find_extent()
460 		spin_lock(&zone->lock);  in reada_find_extent()
461 		--zone->elems;  in reada_find_extent()
462 		if (zone->elems == 0) {  in reada_find_extent()
467 			kref_put(&zone->refcnt, reada_zone_release);  in reada_find_extent()
469 		spin_unlock(&zone->lock);  in reada_find_extent()
472 		kref_put(&zone->refcnt, reada_zone_release);  in reada_find_extent()
494 		struct reada_zone *zone = re->zones[i];  in reada_extent_put()  local
496 		radix_tree_delete(&zone->device->reada_extents, index);  in reada_extent_put()
502 		struct reada_zone *zone = re->zones[i];  in reada_extent_put()  local
504 		kref_get(&zone->refcnt);  in reada_extent_put()
505 		spin_lock(&zone->lock);  in reada_extent_put()
506 		--zone->elems;  in reada_extent_put()
507 		if (zone->elems == 0) {  in reada_extent_put()
510 			kref_put(&zone->refcnt, reada_zone_release);  in reada_extent_put()
512 		spin_unlock(&zone->lock);  in reada_extent_put()
515 		kref_put(&zone->refcnt, reada_zone_release);  in reada_extent_put()
524 	struct reada_zone *zone = container_of(kref, struct reada_zone, refcnt);  in reada_zone_release()  local
526 	radix_tree_delete(&zone->device->reada_zones,  in reada_zone_release()
527 			  zone->end >> PAGE_SHIFT);  in reada_zone_release()
529 	kfree(zone);  in reada_zone_release()
574 static void reada_peer_zones_set_lock(struct reada_zone *zone, int lock)  in reada_peer_zones_set_lock()  argument
577 	unsigned long index = zone->end >> PAGE_SHIFT;  in reada_peer_zones_set_lock()
579 	for (i = 0; i < zone->ndevs; ++i) {  in reada_peer_zones_set_lock()
581 		peer = radix_tree_lookup(&zone->devs[i]->reada_zones, index);  in reada_peer_zones_set_lock()
582 		if (peer && peer->device != zone->device)  in reada_peer_zones_set_lock()
606 		struct reada_zone *zone;  in reada_pick_zone()  local
609 					     (void **)&zone, index, 1);  in reada_pick_zone()
612 		index = (zone->end >> PAGE_SHIFT) + 1;  in reada_pick_zone()
613 		if (zone->locked) {  in reada_pick_zone()
614 			if (zone->elems > top_locked_elems) {  in reada_pick_zone()
615 				top_locked_elems = zone->elems;  in reada_pick_zone()
616 				top_locked_zone = zone;  in reada_pick_zone()
619 			if (zone->elems > top_elems) {  in reada_pick_zone()
620 				top_elems = zone->elems;  in reada_pick_zone()
621 				top_zone = zone;  in reada_pick_zone()
812 			struct reada_zone *zone;  in dump_devs()  local
814 						     (void **)&zone, index, 1);  in dump_devs()
818 				    zone->start, zone->end, zone->elems,  in dump_devs()
819 				    zone->locked);  in dump_devs()
820 			for (j = 0; j < zone->ndevs; ++j) {  in dump_devs()
822 					zone->devs[j]->devid);  in dump_devs()
824 			if (device->reada_curr_zone == zone)  in dump_devs()
826 					device->reada_next - zone->start);  in dump_devs()
828 			index = (zone->end >> PAGE_SHIFT) + 1;  in dump_devs()