229 	struct reada_zone *zone;  in reada_find_zone()  local
235 	zone = NULL;  in reada_find_zone()
237 	ret = radix_tree_gang_lookup(&dev->reada_zones, (void **)&zone,  in reada_find_zone()
239 	if (ret == 1 && logical >= zone->start && logical <= zone->end) {  in reada_find_zone()
240 		kref_get(&zone->refcnt);  in reada_find_zone()
242 		return zone;  in reada_find_zone()
255 	zone = kzalloc(sizeof(*zone), GFP_KERNEL);  in reada_find_zone()
256 	if (!zone)  in reada_find_zone()
261 		kfree(zone);  in reada_find_zone()
265 	zone->start = start;  in reada_find_zone()
266 	zone->end = end;  in reada_find_zone()
267 	INIT_LIST_HEAD(&zone->list);  in reada_find_zone()
268 	spin_lock_init(&zone->lock);  in reada_find_zone()
269 	zone->locked = 0;  in reada_find_zone()
270 	kref_init(&zone->refcnt);  in reada_find_zone()
271 	zone->elems = 0;  in reada_find_zone()
272 	zone->device = dev; /* our device always sits at index 0 */  in reada_find_zone()
275 		zone->devs[i] = bbio->stripes[i].dev;  in reada_find_zone()
277 	zone->ndevs = bbio->num_stripes;  in reada_find_zone()
281 				(unsigned long)(zone->end >> PAGE_SHIFT),  in reada_find_zone()
282 				zone);  in reada_find_zone()
285 		kfree(zone);  in reada_find_zone()
286 		ret = radix_tree_gang_lookup(&dev->reada_zones, (void **)&zone,  in reada_find_zone()
288 		if (ret == 1 && logical >= zone->start && logical <= zone->end)  in reada_find_zone()
289 			kref_get(&zone->refcnt);  in reada_find_zone()
291 			zone = NULL;  in reada_find_zone()
296 	return zone;  in reada_find_zone()
353 		struct reada_zone *zone;  in reada_find_extent()  local
361 		zone = reada_find_zone(dev, logical, bbio);  in reada_find_extent()
362 		if (!zone)  in reada_find_extent()
365 		re->zones[re->nzones++] = zone;  in reada_find_extent()
366 		spin_lock(&zone->lock);  in reada_find_extent()
367 		if (!zone->elems)  in reada_find_extent()
368 			kref_get(&zone->refcnt);  in reada_find_extent()
369 		++zone->elems;  in reada_find_extent()
370 		spin_unlock(&zone->lock);  in reada_find_extent()
372 		kref_put(&zone->refcnt, reada_zone_release);  in reada_find_extent()
459 		struct reada_zone *zone;  in reada_find_extent()  local
461 		zone = re->zones[nzones];  in reada_find_extent()
462 		kref_get(&zone->refcnt);  in reada_find_extent()
463 		spin_lock(&zone->lock);  in reada_find_extent()
464 		--zone->elems;  in reada_find_extent()
465 		if (zone->elems == 0) {  in reada_find_extent()
470 			kref_put(&zone->refcnt, reada_zone_release);  in reada_find_extent()
472 		spin_unlock(&zone->lock);  in reada_find_extent()
475 		kref_put(&zone->refcnt, reada_zone_release);  in reada_find_extent()
497 		struct reada_zone *zone = re->zones[i];  in reada_extent_put()  local
499 		radix_tree_delete(&zone->device->reada_extents, index);  in reada_extent_put()
505 		struct reada_zone *zone = re->zones[i];  in reada_extent_put()  local
507 		kref_get(&zone->refcnt);  in reada_extent_put()
508 		spin_lock(&zone->lock);  in reada_extent_put()
509 		--zone->elems;  in reada_extent_put()
510 		if (zone->elems == 0) {  in reada_extent_put()
513 			kref_put(&zone->refcnt, reada_zone_release);  in reada_extent_put()
515 		spin_unlock(&zone->lock);  in reada_extent_put()
518 		kref_put(&zone->refcnt, reada_zone_release);  in reada_extent_put()
527 	struct reada_zone *zone = container_of(kref, struct reada_zone, refcnt);  in reada_zone_release()  local
529 	radix_tree_delete(&zone->device->reada_zones,  in reada_zone_release()
530 			  zone->end >> PAGE_SHIFT);  in reada_zone_release()
532 	kfree(zone);  in reada_zone_release()
577 static void reada_peer_zones_set_lock(struct reada_zone *zone, int lock)  in reada_peer_zones_set_lock()  argument
580 	unsigned long index = zone->end >> PAGE_SHIFT;  in reada_peer_zones_set_lock()
582 	for (i = 0; i < zone->ndevs; ++i) {  in reada_peer_zones_set_lock()
584 		peer = radix_tree_lookup(&zone->devs[i]->reada_zones, index);  in reada_peer_zones_set_lock()
585 		if (peer && peer->device != zone->device)  in reada_peer_zones_set_lock()
609 		struct reada_zone *zone;  in reada_pick_zone()  local
612 					     (void **)&zone, index, 1);  in reada_pick_zone()
615 		index = (zone->end >> PAGE_SHIFT) + 1;  in reada_pick_zone()
616 		if (zone->locked) {  in reada_pick_zone()
617 			if (zone->elems > top_locked_elems) {  in reada_pick_zone()
618 				top_locked_elems = zone->elems;  in reada_pick_zone()
619 				top_locked_zone = zone;  in reada_pick_zone()
622 			if (zone->elems > top_elems) {  in reada_pick_zone()
623 				top_elems = zone->elems;  in reada_pick_zone()
624 				top_zone = zone;  in reada_pick_zone()
849 			struct reada_zone *zone;  in dump_devs()  local
851 						     (void **)&zone, index, 1);  in dump_devs()
855 				    zone->start, zone->end, zone->elems,  in dump_devs()
856 				    zone->locked);  in dump_devs()
857 			for (j = 0; j < zone->ndevs; ++j) {  in dump_devs()
859 					zone->devs[j]->devid);  in dump_devs()
861 			if (device->reada_curr_zone == zone)  in dump_devs()
863 					device->reada_next - zone->start);  in dump_devs()
865 			index = (zone->end >> PAGE_SHIFT) + 1;  in dump_devs()