179 } compr_pool;  variable
190 	ret = READ_ONCE(compr_pool.count) - READ_ONCE(compr_pool.thresh);  in btrfs_compr_pool_count()
201 	if (compr_pool.count == 0)  in btrfs_compr_pool_scan()
207 	spin_lock(&compr_pool.lock);  in btrfs_compr_pool_scan()
208 	list_splice_init(&compr_pool.list, &remove);  in btrfs_compr_pool_scan()
209 	freed = compr_pool.count;  in btrfs_compr_pool_scan()
210 	compr_pool.count = 0;  in btrfs_compr_pool_scan()
211 	spin_unlock(&compr_pool.lock);  in btrfs_compr_pool_scan()
230 	spin_lock(&compr_pool.lock);  in btrfs_alloc_compr_folio()
231 	if (compr_pool.count > 0) {  in btrfs_alloc_compr_folio()
232 		folio = list_first_entry(&compr_pool.list, struct folio, lru);  in btrfs_alloc_compr_folio()
234 		compr_pool.count--;  in btrfs_alloc_compr_folio()
236 	spin_unlock(&compr_pool.lock);  in btrfs_alloc_compr_folio()
248 	spin_lock(&compr_pool.lock);  in btrfs_free_compr_folio()
249 	if (compr_pool.count > compr_pool.thresh) {  in btrfs_free_compr_folio()
252 		list_add(&folio->lru, &compr_pool.list);  in btrfs_free_compr_folio()
253 		compr_pool.count++;  in btrfs_free_compr_folio()
255 	spin_unlock(&compr_pool.lock);  in btrfs_free_compr_folio()
1104 	compr_pool.shrinker = shrinker_alloc(SHRINKER_NONSLAB, "btrfs-compr-pages");  in btrfs_init_compress()
1105 	if (!compr_pool.shrinker)  in btrfs_init_compress()
1113 	spin_lock_init(&compr_pool.lock);  in btrfs_init_compress()
1114 	INIT_LIST_HEAD(&compr_pool.list);  in btrfs_init_compress()
1115 	compr_pool.count = 0;  in btrfs_init_compress()
1117 	compr_pool.thresh = BTRFS_MAX_COMPRESSED / PAGE_SIZE * 8;  in btrfs_init_compress()
1118 	compr_pool.shrinker->count_objects = btrfs_compr_pool_count;  in btrfs_init_compress()
1119 	compr_pool.shrinker->scan_objects = btrfs_compr_pool_scan;  in btrfs_init_compress()
1120 	compr_pool.shrinker->batch = 32;  in btrfs_init_compress()
1121 	compr_pool.shrinker->seeks = DEFAULT_SEEKS;  in btrfs_init_compress()
1122 	shrinker_register(compr_pool.shrinker);  in btrfs_init_compress()
1131 	shrinker_free(compr_pool.shrinker);  in btrfs_exit_compress()