319 	if (!cache->caching_ctl) {  in get_caching_control()
324 	ctl = cache->caching_ctl;  in get_caching_control()
383 	struct btrfs_caching_control *caching_ctl;  in caching_thread()  local
393 	caching_ctl = container_of(work, struct btrfs_caching_control, work);  in caching_thread()
394 	block_group = caching_ctl->block_group;  in caching_thread()
418 	mutex_lock(&caching_ctl->mutex);  in caching_thread()
445 				caching_ctl->progress = last;  in caching_thread()
448 				mutex_unlock(&caching_ctl->mutex);  in caching_thread()
468 			caching_ctl->progress = last;  in caching_thread()
495 				wake_up(&caching_ctl->wait);  in caching_thread()
505 	caching_ctl->progress = (u64)-1;  in caching_thread()
508 	block_group->caching_ctl = NULL;  in caching_thread()
518 	mutex_unlock(&caching_ctl->mutex);  in caching_thread()
522 		block_group->caching_ctl = NULL;  in caching_thread()
526 	wake_up(&caching_ctl->wait);  in caching_thread()
528 	put_caching_control(caching_ctl);  in caching_thread()
537 	struct btrfs_caching_control *caching_ctl;  in cache_block_group()  local
540 	caching_ctl = kzalloc(sizeof(*caching_ctl), GFP_NOFS);  in cache_block_group()
541 	if (!caching_ctl)  in cache_block_group()
544 	INIT_LIST_HEAD(&caching_ctl->list);  in cache_block_group()
545 	mutex_init(&caching_ctl->mutex);  in cache_block_group()
546 	init_waitqueue_head(&caching_ctl->wait);  in cache_block_group()
547 	caching_ctl->block_group = cache;  in cache_block_group()
548 	caching_ctl->progress = cache->key.objectid;  in cache_block_group()
549 	atomic_set(&caching_ctl->count, 1);  in cache_block_group()
550 	btrfs_init_work(&caching_ctl->work, btrfs_cache_helper,  in cache_block_group()
569 		ctl = cache->caching_ctl;  in cache_block_group()
583 		kfree(caching_ctl);  in cache_block_group()
586 	WARN_ON(cache->caching_ctl);  in cache_block_group()
587 	cache->caching_ctl = caching_ctl;  in cache_block_group()
592 		mutex_lock(&caching_ctl->mutex);  in cache_block_group()
597 			cache->caching_ctl = NULL;  in cache_block_group()
600 			caching_ctl->progress = (u64)-1;  in cache_block_group()
603 				cache->caching_ctl = NULL;  in cache_block_group()
611 		mutex_unlock(&caching_ctl->mutex);  in cache_block_group()
613 		wake_up(&caching_ctl->wait);  in cache_block_group()
615 			put_caching_control(caching_ctl);  in cache_block_group()
626 			cache->caching_ctl = NULL;  in cache_block_group()
633 		wake_up(&caching_ctl->wait);  in cache_block_group()
637 		put_caching_control(caching_ctl);  in cache_block_group()
642 	atomic_inc(&caching_ctl->count);  in cache_block_group()
643 	list_add_tail(&caching_ctl->list, &fs_info->caching_block_groups);  in cache_block_group()
648 	btrfs_queue_work(fs_info->caching_workers, &caching_ctl->work);  in cache_block_group()
5814 	struct btrfs_caching_control *caching_ctl;  in __exclude_logged_extent()  local
5821 	caching_ctl = get_caching_control(block_group);  in __exclude_logged_extent()
5823 	if (!caching_ctl) {  in __exclude_logged_extent()
5828 		mutex_lock(&caching_ctl->mutex);  in __exclude_logged_extent()
5830 		if (start >= caching_ctl->progress) {  in __exclude_logged_extent()
5832 		} else if (start + num_bytes <= caching_ctl->progress) {  in __exclude_logged_extent()
5836 			num_bytes = caching_ctl->progress - start;  in __exclude_logged_extent()
5843 				caching_ctl->progress;  in __exclude_logged_extent()
5844 			start = caching_ctl->progress;  in __exclude_logged_extent()
5848 		mutex_unlock(&caching_ctl->mutex);  in __exclude_logged_extent()
5849 		put_caching_control(caching_ctl);  in __exclude_logged_extent()
5950 	struct btrfs_caching_control *caching_ctl;  in btrfs_prepare_extent_commit()  local
5955 	list_for_each_entry_safe(caching_ctl, next,  in btrfs_prepare_extent_commit()
5957 		cache = caching_ctl->block_group;  in btrfs_prepare_extent_commit()
5960 			list_del_init(&caching_ctl->list);  in btrfs_prepare_extent_commit()
5961 			put_caching_control(caching_ctl);  in btrfs_prepare_extent_commit()
5963 			cache->last_byte_to_unpin = caching_ctl->progress;  in btrfs_prepare_extent_commit()
6567 	struct btrfs_caching_control *caching_ctl;  in wait_block_group_cache_progress()  local
6569 	caching_ctl = get_caching_control(cache);  in wait_block_group_cache_progress()
6570 	if (!caching_ctl)  in wait_block_group_cache_progress()
6573 	wait_event(caching_ctl->wait, block_group_cache_done(cache) ||  in wait_block_group_cache_progress()
6576 	put_caching_control(caching_ctl);  in wait_block_group_cache_progress()
6582 	struct btrfs_caching_control *caching_ctl;  in wait_block_group_cache_done()  local
6585 	caching_ctl = get_caching_control(cache);  in wait_block_group_cache_done()
6586 	if (!caching_ctl)  in wait_block_group_cache_done()
6589 	wait_event(caching_ctl->wait, block_group_cache_done(cache));  in wait_block_group_cache_done()
6592 	put_caching_control(caching_ctl);  in wait_block_group_cache_done()
9155 	struct btrfs_caching_control *caching_ctl;  in btrfs_free_block_groups()  local
9160 		caching_ctl = list_entry(info->caching_block_groups.next,  in btrfs_free_block_groups()
9162 		list_del(&caching_ctl->list);  in btrfs_free_block_groups()
9163 		put_caching_control(caching_ctl);  in btrfs_free_block_groups()
9634 	struct btrfs_caching_control *caching_ctl = NULL;  in btrfs_remove_block_group()  local
9775 		caching_ctl = get_caching_control(block_group);  in btrfs_remove_block_group()
9780 		if (!caching_ctl) {  in btrfs_remove_block_group()
9786 					caching_ctl = ctl;  in btrfs_remove_block_group()
9787 					atomic_inc(&caching_ctl->count);  in btrfs_remove_block_group()
9791 		if (caching_ctl)  in btrfs_remove_block_group()
9792 			list_del_init(&caching_ctl->list);  in btrfs_remove_block_group()
9794 		if (caching_ctl) {  in btrfs_remove_block_group()
9796 			put_caching_control(caching_ctl);  in btrfs_remove_block_group()
9797 			put_caching_control(caching_ctl);  in btrfs_remove_block_group()