366 	if (!cache->caching_ctl) {  in btrfs_get_caching_control()
371 	ctl = cache->caching_ctl;  in btrfs_get_caching_control()
399 	struct btrfs_caching_control *caching_ctl;  in btrfs_wait_block_group_cache_progress()  local
401 	caching_ctl = btrfs_get_caching_control(cache);  in btrfs_wait_block_group_cache_progress()
402 	if (!caching_ctl)  in btrfs_wait_block_group_cache_progress()
405 	wait_event(caching_ctl->wait, btrfs_block_group_done(cache) ||  in btrfs_wait_block_group_cache_progress()
408 	btrfs_put_caching_control(caching_ctl);  in btrfs_wait_block_group_cache_progress()
413 	struct btrfs_caching_control *caching_ctl;  in btrfs_wait_block_group_cache_done()  local
416 	caching_ctl = btrfs_get_caching_control(cache);  in btrfs_wait_block_group_cache_done()
417 	if (!caching_ctl)  in btrfs_wait_block_group_cache_done()
420 	wait_event(caching_ctl->wait, btrfs_block_group_done(cache));  in btrfs_wait_block_group_cache_done()
423 	btrfs_put_caching_control(caching_ctl);  in btrfs_wait_block_group_cache_done()
493 static int load_extent_tree_free(struct btrfs_caching_control *caching_ctl)  in load_extent_tree_free()  argument
495 	struct btrfs_block_group *block_group = caching_ctl->block_group;  in load_extent_tree_free()
560 					caching_ctl->progress = last;  in load_extent_tree_free()
563 				mutex_unlock(&caching_ctl->mutex);  in load_extent_tree_free()
565 				mutex_lock(&caching_ctl->mutex);  in load_extent_tree_free()
586 				caching_ctl->progress = last;  in load_extent_tree_free()
612 					wake_up(&caching_ctl->wait);  in load_extent_tree_free()
621 	caching_ctl->progress = (u64)-1;  in load_extent_tree_free()
632 	struct btrfs_caching_control *caching_ctl;  in caching_thread()  local
635 	caching_ctl = container_of(work, struct btrfs_caching_control, work);  in caching_thread()
636 	block_group = caching_ctl->block_group;  in caching_thread()
639 	mutex_lock(&caching_ctl->mutex);  in caching_thread()
651 		ret = load_free_space_tree(caching_ctl);  in caching_thread()
653 		ret = load_extent_tree_free(caching_ctl);  in caching_thread()
656 	block_group->caching_ctl = NULL;  in caching_thread()
674 	caching_ctl->progress = (u64)-1;  in caching_thread()
678 	mutex_unlock(&caching_ctl->mutex);  in caching_thread()
680 	wake_up(&caching_ctl->wait);  in caching_thread()
682 	btrfs_put_caching_control(caching_ctl);  in caching_thread()
690 	struct btrfs_caching_control *caching_ctl;  in btrfs_cache_block_group()  local
693 	caching_ctl = kzalloc(sizeof(*caching_ctl), GFP_NOFS);  in btrfs_cache_block_group()
694 	if (!caching_ctl)  in btrfs_cache_block_group()
697 	INIT_LIST_HEAD(&caching_ctl->list);  in btrfs_cache_block_group()
698 	mutex_init(&caching_ctl->mutex);  in btrfs_cache_block_group()
699 	init_waitqueue_head(&caching_ctl->wait);  in btrfs_cache_block_group()
700 	caching_ctl->block_group = cache;  in btrfs_cache_block_group()
701 	caching_ctl->progress = cache->start;  in btrfs_cache_block_group()
702 	refcount_set(&caching_ctl->count, 1);  in btrfs_cache_block_group()
703 	btrfs_init_work(&caching_ctl->work, caching_thread, NULL, NULL);  in btrfs_cache_block_group()
721 		ctl = cache->caching_ctl;  in btrfs_cache_block_group()
735 		kfree(caching_ctl);  in btrfs_cache_block_group()
738 	WARN_ON(cache->caching_ctl);  in btrfs_cache_block_group()
739 	cache->caching_ctl = caching_ctl;  in btrfs_cache_block_group()
744 		mutex_lock(&caching_ctl->mutex);  in btrfs_cache_block_group()
749 			cache->caching_ctl = NULL;  in btrfs_cache_block_group()
752 			caching_ctl->progress = (u64)-1;  in btrfs_cache_block_group()
755 				cache->caching_ctl = NULL;  in btrfs_cache_block_group()
777 		mutex_unlock(&caching_ctl->mutex);  in btrfs_cache_block_group()
779 		wake_up(&caching_ctl->wait);  in btrfs_cache_block_group()
781 			btrfs_put_caching_control(caching_ctl);  in btrfs_cache_block_group()
792 			cache->caching_ctl = NULL;  in btrfs_cache_block_group()
799 		wake_up(&caching_ctl->wait);  in btrfs_cache_block_group()
803 		btrfs_put_caching_control(caching_ctl);  in btrfs_cache_block_group()
808 	refcount_inc(&caching_ctl->count);  in btrfs_cache_block_group()
809 	list_add_tail(&caching_ctl->list, &fs_info->caching_block_groups);  in btrfs_cache_block_group()
814 	btrfs_queue_work(fs_info->caching_workers, &caching_ctl->work);  in btrfs_cache_block_group()
910 	struct btrfs_caching_control *caching_ctl = NULL;  in btrfs_remove_block_group()  local
1050 		caching_ctl = btrfs_get_caching_control(block_group);  in btrfs_remove_block_group()
1055 		if (!caching_ctl) {  in btrfs_remove_block_group()
1061 					caching_ctl = ctl;  in btrfs_remove_block_group()
1062 					refcount_inc(&caching_ctl->count);  in btrfs_remove_block_group()
1066 		if (caching_ctl)  in btrfs_remove_block_group()
1067 			list_del_init(&caching_ctl->list);  in btrfs_remove_block_group()
1069 		if (caching_ctl) {  in btrfs_remove_block_group()
1071 			btrfs_put_caching_control(caching_ctl);  in btrfs_remove_block_group()
1072 			btrfs_put_caching_control(caching_ctl);  in btrfs_remove_block_group()
3321 	struct btrfs_caching_control *caching_ctl;  in btrfs_free_block_groups()  local
3326 		caching_ctl = list_entry(info->caching_block_groups.next,  in btrfs_free_block_groups()
3328 		list_del(&caching_ctl->list);  in btrfs_free_block_groups()
3329 		btrfs_put_caching_control(caching_ctl);  in btrfs_free_block_groups()