253 	struct reada_zone *zone;  in reada_find_zone()  local
259 	zone = NULL;  in reada_find_zone()
261 	ret = radix_tree_gang_lookup(&dev->reada_zones, (void **)&zone,  in reada_find_zone()
264 		kref_get(&zone->refcnt);  in reada_find_zone()
268 		if (logical >= zone->start && logical < zone->end)  in reada_find_zone()
269 			return zone;  in reada_find_zone()
271 		kref_put(&zone->refcnt, reada_zone_release);  in reada_find_zone()
283 	zone = kzalloc(sizeof(*zone), GFP_NOFS);  in reada_find_zone()
284 	if (!zone)  in reada_find_zone()
287 	zone->start = start;  in reada_find_zone()
288 	zone->end = end;  in reada_find_zone()
289 	INIT_LIST_HEAD(&zone->list);  in reada_find_zone()
290 	spin_lock_init(&zone->lock);  in reada_find_zone()
291 	zone->locked = 0;  in reada_find_zone()
292 	kref_init(&zone->refcnt);  in reada_find_zone()
293 	zone->elems = 0;  in reada_find_zone()
294 	zone->device = dev; /* our device always sits at index 0 */  in reada_find_zone()
297 		zone->devs[i] = bbio->stripes[i].dev;  in reada_find_zone()
299 	zone->ndevs = bbio->num_stripes;  in reada_find_zone()
303 				(unsigned long)(zone->end >> PAGE_CACHE_SHIFT),  in reada_find_zone()
304 				zone);  in reada_find_zone()
307 		kfree(zone);  in reada_find_zone()
308 		ret = radix_tree_gang_lookup(&dev->reada_zones, (void **)&zone,  in reada_find_zone()
311 			kref_get(&zone->refcnt);  in reada_find_zone()
315 	return zone;  in reada_find_zone()
373 		struct reada_zone *zone;  in reada_find_extent()  local
376 		zone = reada_find_zone(fs_info, dev, logical, bbio);  in reada_find_extent()
377 		if (!zone)  in reada_find_extent()
380 		re->zones[nzones] = zone;  in reada_find_extent()
381 		spin_lock(&zone->lock);  in reada_find_extent()
382 		if (!zone->elems)  in reada_find_extent()
383 			kref_get(&zone->refcnt);  in reada_find_extent()
384 		++zone->elems;  in reada_find_extent()
385 		spin_unlock(&zone->lock);  in reada_find_extent()
387 		kref_put(&zone->refcnt, reada_zone_release);  in reada_find_extent()
469 		struct reada_zone *zone;  in reada_find_extent()  local
472 		zone = re->zones[nzones];  in reada_find_extent()
473 		kref_get(&zone->refcnt);  in reada_find_extent()
474 		spin_lock(&zone->lock);  in reada_find_extent()
475 		--zone->elems;  in reada_find_extent()
476 		if (zone->elems == 0) {  in reada_find_extent()
481 			kref_put(&zone->refcnt, reada_zone_release);  in reada_find_extent()
483 		spin_unlock(&zone->lock);  in reada_find_extent()
486 		kref_put(&zone->refcnt, reada_zone_release);  in reada_find_extent()
508 		struct reada_zone *zone = re->zones[i];  in reada_extent_put()  local
510 		radix_tree_delete(&zone->device->reada_extents, index);  in reada_extent_put()
516 		struct reada_zone *zone = re->zones[i];  in reada_extent_put()  local
518 		kref_get(&zone->refcnt);  in reada_extent_put()
519 		spin_lock(&zone->lock);  in reada_extent_put()
520 		--zone->elems;  in reada_extent_put()
521 		if (zone->elems == 0) {  in reada_extent_put()
524 			kref_put(&zone->refcnt, reada_zone_release);  in reada_extent_put()
526 		spin_unlock(&zone->lock);  in reada_extent_put()
529 		kref_put(&zone->refcnt, reada_zone_release);  in reada_extent_put()
540 	struct reada_zone *zone = container_of(kref, struct reada_zone, refcnt);  in reada_zone_release()  local
542 	radix_tree_delete(&zone->device->reada_zones,  in reada_zone_release()
543 			  zone->end >> PAGE_CACHE_SHIFT);  in reada_zone_release()
545 	kfree(zone);  in reada_zone_release()
589 static void reada_peer_zones_set_lock(struct reada_zone *zone, int lock)  in reada_peer_zones_set_lock()  argument
592 	unsigned long index = zone->end >> PAGE_CACHE_SHIFT;  in reada_peer_zones_set_lock()
594 	for (i = 0; i < zone->ndevs; ++i) {  in reada_peer_zones_set_lock()
596 		peer = radix_tree_lookup(&zone->devs[i]->reada_zones, index);  in reada_peer_zones_set_lock()
597 		if (peer && peer->device != zone->device)  in reada_peer_zones_set_lock()
621 		struct reada_zone *zone;  in reada_pick_zone()  local
624 					     (void **)&zone, index, 1);  in reada_pick_zone()
627 		index = (zone->end >> PAGE_CACHE_SHIFT) + 1;  in reada_pick_zone()
628 		if (zone->locked) {  in reada_pick_zone()
629 			if (zone->elems > top_locked_elems) {  in reada_pick_zone()
630 				top_locked_elems = zone->elems;  in reada_pick_zone()
631 				top_locked_zone = zone;  in reada_pick_zone()
634 			if (zone->elems > top_elems) {  in reada_pick_zone()
635 				top_elems = zone->elems;  in reada_pick_zone()
636 				top_zone = zone;  in reada_pick_zone()
821 			struct reada_zone *zone;  in dump_devs()  local
823 						     (void **)&zone, index, 1);  in dump_devs()
827 				"%d devs", zone->start, zone->end, zone->elems,  in dump_devs()
828 				zone->locked);  in dump_devs()
829 			for (j = 0; j < zone->ndevs; ++j) {  in dump_devs()
831 					zone->devs[j]->devid);  in dump_devs()
833 			if (device->reada_curr_zone == zone)  in dump_devs()
835 					device->reada_next - zone->start);  in dump_devs()
837 			index = (zone->end >> PAGE_CACHE_SHIFT) + 1;  in dump_devs()