85 static struct zstd_workspace_manager wsm;  variable
108 	spin_lock_bh(&wsm.lock);  in zstd_reclaim_timer_fn()
110 	if (list_empty(&wsm.lru_list)) {  in zstd_reclaim_timer_fn()
111 		spin_unlock_bh(&wsm.lock);  in zstd_reclaim_timer_fn()
115 	list_for_each_prev_safe(pos, next, &wsm.lru_list) {  in zstd_reclaim_timer_fn()
132 		if (list_empty(&wsm.idle_ws[level - 1]))  in zstd_reclaim_timer_fn()
133 			clear_bit(level - 1, &wsm.active_map);  in zstd_reclaim_timer_fn()
137 	if (!list_empty(&wsm.lru_list))  in zstd_reclaim_timer_fn()
138 		mod_timer(&wsm.timer, jiffies + ZSTD_BTRFS_RECLAIM_JIFFIES);  in zstd_reclaim_timer_fn()
140 	spin_unlock_bh(&wsm.lock);  in zstd_reclaim_timer_fn()
177 	wsm.ops = &btrfs_zstd_compress;  in zstd_init_workspace_manager()
178 	spin_lock_init(&wsm.lock);  in zstd_init_workspace_manager()
179 	init_waitqueue_head(&wsm.wait);  in zstd_init_workspace_manager()
180 	timer_setup(&wsm.timer, zstd_reclaim_timer_fn, 0);  in zstd_init_workspace_manager()
182 	INIT_LIST_HEAD(&wsm.lru_list);  in zstd_init_workspace_manager()
184 		INIT_LIST_HEAD(&wsm.idle_ws[i]);  in zstd_init_workspace_manager()
191 		set_bit(ZSTD_BTRFS_MAX_LEVEL - 1, &wsm.active_map);  in zstd_init_workspace_manager()
192 		list_add(ws, &wsm.idle_ws[ZSTD_BTRFS_MAX_LEVEL - 1]);  in zstd_init_workspace_manager()
201 	spin_lock_bh(&wsm.lock);  in zstd_cleanup_workspace_manager()
203 		while (!list_empty(&wsm.idle_ws[i])) {  in zstd_cleanup_workspace_manager()
204 			workspace = container_of(wsm.idle_ws[i].next,  in zstd_cleanup_workspace_manager()
211 	spin_unlock_bh(&wsm.lock);  in zstd_cleanup_workspace_manager()
213 	del_timer_sync(&wsm.timer);  in zstd_cleanup_workspace_manager()
233 	spin_lock_bh(&wsm.lock);  in zstd_find_workspace()
234 	for_each_set_bit_from(i, &wsm.active_map, ZSTD_BTRFS_MAX_LEVEL) {  in zstd_find_workspace()
235 		if (!list_empty(&wsm.idle_ws[i])) {  in zstd_find_workspace()
236 			ws = wsm.idle_ws[i].next;  in zstd_find_workspace()
243 			if (list_empty(&wsm.idle_ws[i]))  in zstd_find_workspace()
244 				clear_bit(i, &wsm.active_map);  in zstd_find_workspace()
245 			spin_unlock_bh(&wsm.lock);  in zstd_find_workspace()
249 	spin_unlock_bh(&wsm.lock);  in zstd_find_workspace()
284 		prepare_to_wait(&wsm.wait, &wait, TASK_UNINTERRUPTIBLE);  in zstd_get_workspace()
286 		finish_wait(&wsm.wait, &wait);  in zstd_get_workspace()
308 	spin_lock_bh(&wsm.lock);  in zstd_put_workspace()
313 		if (list_empty(&wsm.idle_ws[ZSTD_BTRFS_MAX_LEVEL - 1])) {  in zstd_put_workspace()
317 			list_add(&workspace->lru_list, &wsm.lru_list);  in zstd_put_workspace()
318 			if (!timer_pending(&wsm.timer))  in zstd_put_workspace()
319 				mod_timer(&wsm.timer,  in zstd_put_workspace()
324 	set_bit(workspace->level - 1, &wsm.active_map);  in zstd_put_workspace()
325 	list_add(&workspace->list, &wsm.idle_ws[workspace->level - 1]);  in zstd_put_workspace()
328 	spin_unlock_bh(&wsm.lock);  in zstd_put_workspace()
331 		cond_wake_up(&wsm.wait);  in zstd_put_workspace()