317 	if (!cache->caching_ctl) {  in get_caching_control()
322 	ctl = cache->caching_ctl;  in get_caching_control()
402 	struct btrfs_caching_control *caching_ctl;  in caching_thread()  local
413 	caching_ctl = container_of(work, struct btrfs_caching_control, work);  in caching_thread()
414 	block_group = caching_ctl->block_group;  in caching_thread()
447 	mutex_lock(&caching_ctl->mutex);  in caching_thread()
475 					caching_ctl->progress = last;  in caching_thread()
478 				mutex_unlock(&caching_ctl->mutex);  in caching_thread()
499 				caching_ctl->progress = last;  in caching_thread()
527 					wake_up(&caching_ctl->wait);  in caching_thread()
538 	block_group->caching_ctl = NULL;  in caching_thread()
557 	caching_ctl->progress = (u64)-1;  in caching_thread()
564 	mutex_unlock(&caching_ctl->mutex);  in caching_thread()
568 		block_group->caching_ctl = NULL;  in caching_thread()
572 	wake_up(&caching_ctl->wait);  in caching_thread()
574 	put_caching_control(caching_ctl);  in caching_thread()
583 	struct btrfs_caching_control *caching_ctl;  in cache_block_group()  local
586 	caching_ctl = kzalloc(sizeof(*caching_ctl), GFP_NOFS);  in cache_block_group()
587 	if (!caching_ctl)  in cache_block_group()
590 	INIT_LIST_HEAD(&caching_ctl->list);  in cache_block_group()
591 	mutex_init(&caching_ctl->mutex);  in cache_block_group()
592 	init_waitqueue_head(&caching_ctl->wait);  in cache_block_group()
593 	caching_ctl->block_group = cache;  in cache_block_group()
594 	caching_ctl->progress = cache->key.objectid;  in cache_block_group()
595 	atomic_set(&caching_ctl->count, 1);  in cache_block_group()
596 	btrfs_init_work(&caching_ctl->work, btrfs_cache_helper,  in cache_block_group()
615 		ctl = cache->caching_ctl;  in cache_block_group()
629 		kfree(caching_ctl);  in cache_block_group()
632 	WARN_ON(cache->caching_ctl);  in cache_block_group()
633 	cache->caching_ctl = caching_ctl;  in cache_block_group()
638 		mutex_lock(&caching_ctl->mutex);  in cache_block_group()
643 			cache->caching_ctl = NULL;  in cache_block_group()
646 			caching_ctl->progress = (u64)-1;  in cache_block_group()
649 				cache->caching_ctl = NULL;  in cache_block_group()
673 		mutex_unlock(&caching_ctl->mutex);  in cache_block_group()
675 		wake_up(&caching_ctl->wait);  in cache_block_group()
677 			put_caching_control(caching_ctl);  in cache_block_group()
688 			cache->caching_ctl = NULL;  in cache_block_group()
695 		wake_up(&caching_ctl->wait);  in cache_block_group()
699 		put_caching_control(caching_ctl);  in cache_block_group()
704 	atomic_inc(&caching_ctl->count);  in cache_block_group()
705 	list_add_tail(&caching_ctl->list, &fs_info->caching_block_groups);  in cache_block_group()
710 	btrfs_queue_work(fs_info->caching_workers, &caching_ctl->work);  in cache_block_group()
6049 	struct btrfs_caching_control *caching_ctl;  in __exclude_logged_extent()  local
6056 	caching_ctl = get_caching_control(block_group);  in __exclude_logged_extent()
6058 	if (!caching_ctl) {  in __exclude_logged_extent()
6063 		mutex_lock(&caching_ctl->mutex);  in __exclude_logged_extent()
6065 		if (start >= caching_ctl->progress) {  in __exclude_logged_extent()
6067 		} else if (start + num_bytes <= caching_ctl->progress) {  in __exclude_logged_extent()
6071 			num_bytes = caching_ctl->progress - start;  in __exclude_logged_extent()
6078 				caching_ctl->progress;  in __exclude_logged_extent()
6079 			start = caching_ctl->progress;  in __exclude_logged_extent()
6083 		mutex_unlock(&caching_ctl->mutex);  in __exclude_logged_extent()
6084 		put_caching_control(caching_ctl);  in __exclude_logged_extent()
6185 	struct btrfs_caching_control *caching_ctl;  in btrfs_prepare_extent_commit()  local
6190 	list_for_each_entry_safe(caching_ctl, next,  in btrfs_prepare_extent_commit()
6192 		cache = caching_ctl->block_group;  in btrfs_prepare_extent_commit()
6195 			list_del_init(&caching_ctl->list);  in btrfs_prepare_extent_commit()
6196 			put_caching_control(caching_ctl);  in btrfs_prepare_extent_commit()
6198 			cache->last_byte_to_unpin = caching_ctl->progress;  in btrfs_prepare_extent_commit()
6865 	struct btrfs_caching_control *caching_ctl;  in wait_block_group_cache_progress()  local
6867 	caching_ctl = get_caching_control(cache);  in wait_block_group_cache_progress()
6868 	if (!caching_ctl)  in wait_block_group_cache_progress()
6871 	wait_event(caching_ctl->wait, block_group_cache_done(cache) ||  in wait_block_group_cache_progress()
6874 	put_caching_control(caching_ctl);  in wait_block_group_cache_progress()
6880 	struct btrfs_caching_control *caching_ctl;  in wait_block_group_cache_done()  local
6883 	caching_ctl = get_caching_control(cache);  in wait_block_group_cache_done()
6884 	if (!caching_ctl)  in wait_block_group_cache_done()
6887 	wait_event(caching_ctl->wait, block_group_cache_done(cache));  in wait_block_group_cache_done()
6890 	put_caching_control(caching_ctl);  in wait_block_group_cache_done()
9510 	struct btrfs_caching_control *caching_ctl;  in btrfs_free_block_groups()  local
9515 		caching_ctl = list_entry(info->caching_block_groups.next,  in btrfs_free_block_groups()
9517 		list_del(&caching_ctl->list);  in btrfs_free_block_groups()
9518 		put_caching_control(caching_ctl);  in btrfs_free_block_groups()
10017 	struct btrfs_caching_control *caching_ctl = NULL;  in btrfs_remove_block_group()  local
10158 		caching_ctl = get_caching_control(block_group);  in btrfs_remove_block_group()
10163 		if (!caching_ctl) {  in btrfs_remove_block_group()
10169 					caching_ctl = ctl;  in btrfs_remove_block_group()
10170 					atomic_inc(&caching_ctl->count);  in btrfs_remove_block_group()
10174 		if (caching_ctl)  in btrfs_remove_block_group()
10175 			list_del_init(&caching_ctl->list);  in btrfs_remove_block_group()
10177 		if (caching_ctl) {  in btrfs_remove_block_group()
10179 			put_caching_control(caching_ctl);  in btrfs_remove_block_group()
10180 			put_caching_control(caching_ctl);  in btrfs_remove_block_group()