998 	struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;  in __create_discard_cmd()  local
1004 	pend_list = &dcc->pend_list[plist_idx(len)];  in __create_discard_cmd()
1020 	atomic_inc(&dcc->discard_cmd_cnt);  in __create_discard_cmd()
1021 	dcc->undiscard_blks += len;  in __create_discard_cmd()
1032 	struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;  in __attach_discard_cmd()  local
1038 	rb_insert_color_cached(&dc->rb_node, &dcc->root, leftmost);  in __attach_discard_cmd()
1043 static void __detach_discard_cmd(struct discard_cmd_control *dcc,  in __detach_discard_cmd()  argument
1047 		atomic_sub(dc->queued, &dcc->queued_discard);  in __detach_discard_cmd()
1050 	rb_erase_cached(&dc->rb_node, &dcc->root);  in __detach_discard_cmd()
1051 	dcc->undiscard_blks -= dc->len;  in __detach_discard_cmd()
1055 	atomic_dec(&dcc->discard_cmd_cnt);  in __detach_discard_cmd()
1061 	struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;  in __remove_discard_cmd()  local
1083 	__detach_discard_cmd(dcc, dc);  in __remove_discard_cmd()
1134 	struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;  in __init_discard_policy()  local
1155 			if (atomic_read(&dcc->discard_cmd_cnt))  in __init_discard_policy()
1187 	struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;  in __submit_discard_cmd()  local
1189 					&(dcc->fstrim_list) : &(dcc->wait_list);  in __submit_discard_cmd()
1258 		atomic_inc(&dcc->queued_discard);  in __submit_discard_cmd()
1270 		atomic_inc(&dcc->issued_discard);  in __submit_discard_cmd()
1281 		dcc->undiscard_blks -= len;  in __submit_discard_cmd()
1293 	struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;  in __insert_discard_tree()  local
1304 	p = f2fs_lookup_rb_tree_for_insert(sbi, &dcc->root, &parent,  in __insert_discard_tree()
1311 static void __relocate_discard_cmd(struct discard_cmd_control *dcc,  in __relocate_discard_cmd()  argument
1314 	list_move_tail(&dc->list, &dcc->pend_list[plist_idx(dc->len)]);  in __relocate_discard_cmd()
1320 	struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;  in __punch_discard_cmd()  local
1329 	dcc->undiscard_blks -= di.len;  in __punch_discard_cmd()
1333 		dcc->undiscard_blks += dc->len;  in __punch_discard_cmd()
1334 		__relocate_discard_cmd(dcc, dc);  in __punch_discard_cmd()
1348 			dcc->undiscard_blks += dc->len;  in __punch_discard_cmd()
1349 			__relocate_discard_cmd(dcc, dc);  in __punch_discard_cmd()
1358 	struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;  in __update_discard_tree_range()  local
1368 	dc = (struct discard_cmd *)f2fs_lookup_rb_tree_ret(&dcc->root,  in __update_discard_tree_range()
1410 			dcc->undiscard_blks += di.len;  in __update_discard_tree_range()
1411 			__relocate_discard_cmd(dcc, prev_dc);  in __update_discard_tree_range()
1424 			dcc->undiscard_blks += di.len;  in __update_discard_tree_range()
1425 			__relocate_discard_cmd(dcc, next_dc);  in __update_discard_tree_range()
1469 	struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;  in __issue_discard_cmd_orderly()  local
1474 	unsigned int pos = dcc->next_pos;  in __issue_discard_cmd_orderly()
1478 	mutex_lock(&dcc->cmd_lock);  in __issue_discard_cmd_orderly()
1479 	dc = (struct discard_cmd *)f2fs_lookup_rb_tree_ret(&dcc->root,  in __issue_discard_cmd_orderly()
1501 		dcc->next_pos = dc->lstart + dc->len;  in __issue_discard_cmd_orderly()
1516 		dcc->next_pos = 0;  in __issue_discard_cmd_orderly()
1518 	mutex_unlock(&dcc->cmd_lock);  in __issue_discard_cmd_orderly()
1531 	struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;  in __issue_discard_cmd()  local
1554 		pend_list = &dcc->pend_list[i];  in __issue_discard_cmd()
1556 		mutex_lock(&dcc->cmd_lock);  in __issue_discard_cmd()
1559 		if (unlikely(dcc->rbtree_check))  in __issue_discard_cmd()
1561 							&dcc->root, false));  in __issue_discard_cmd()
1583 		mutex_unlock(&dcc->cmd_lock);  in __issue_discard_cmd()
1602 	struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;  in __drop_discard_cmd()  local
1608 	mutex_lock(&dcc->cmd_lock);  in __drop_discard_cmd()
1610 		pend_list = &dcc->pend_list[i];  in __drop_discard_cmd()
1617 	mutex_unlock(&dcc->cmd_lock);  in __drop_discard_cmd()
1630 	struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;  in __wait_one_discard_bio()  local
1634 	mutex_lock(&dcc->cmd_lock);  in __wait_one_discard_bio()
1642 	mutex_unlock(&dcc->cmd_lock);  in __wait_one_discard_bio()
1651 	struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;  in __wait_discard_cmd_range()  local
1653 					&(dcc->fstrim_list) : &(dcc->wait_list);  in __wait_discard_cmd_range()
1661 	mutex_lock(&dcc->cmd_lock);  in __wait_discard_cmd_range()
1678 	mutex_unlock(&dcc->cmd_lock);  in __wait_discard_cmd_range()
1709 	struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;  in f2fs_wait_discard_bio()  local
1713 	mutex_lock(&dcc->cmd_lock);  in f2fs_wait_discard_bio()
1714 	dc = (struct discard_cmd *)f2fs_lookup_rb_tree(&dcc->root,  in f2fs_wait_discard_bio()
1724 	mutex_unlock(&dcc->cmd_lock);  in f2fs_wait_discard_bio()
1732 	struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;  in f2fs_stop_discard_thread()  local
1734 	if (dcc && dcc->f2fs_issue_discard) {  in f2fs_stop_discard_thread()
1735 		struct task_struct *discard_thread = dcc->f2fs_issue_discard;  in f2fs_stop_discard_thread()
1737 		dcc->f2fs_issue_discard = NULL;  in f2fs_stop_discard_thread()
1745 	struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;  in f2fs_issue_discard_timeout()  local
1750 					dcc->discard_granularity);  in f2fs_issue_discard_timeout()
1757 	f2fs_bug_on(sbi, atomic_read(&dcc->discard_cmd_cnt));  in f2fs_issue_discard_timeout()
1764 	struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;  in issue_discard_thread()  local
1765 	wait_queue_head_t *q = &dcc->discard_wait_queue;  in issue_discard_thread()
1778 						dcc->discard_granularity);  in issue_discard_thread()
1780 		if (!atomic_read(&dcc->discard_cmd_cnt))  in issue_discard_thread()
1785 				dcc->discard_wake,  in issue_discard_thread()
1788 		if (dcc->discard_wake)  in issue_discard_thread()
1789 			dcc->discard_wake = 0;  in issue_discard_thread()
1792 		if (atomic_read(&dcc->queued_discard))  in issue_discard_thread()
1805 		if (!atomic_read(&dcc->discard_cmd_cnt))  in issue_discard_thread()
2013 	struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;  in f2fs_clear_prefree_segments()  local
2014 	struct list_head *head = &dcc->entry_list;  in f2fs_clear_prefree_segments()
2111 		dcc->nr_discards -= total_len;  in f2fs_clear_prefree_segments()
2121 	struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;  in f2fs_start_discard_thread()  local
2127 	dcc->f2fs_issue_discard = kthread_run(issue_discard_thread, sbi,  in f2fs_start_discard_thread()
2129 	if (IS_ERR(dcc->f2fs_issue_discard))  in f2fs_start_discard_thread()
2130 		err = PTR_ERR(dcc->f2fs_issue_discard);  in f2fs_start_discard_thread()
2137 	struct discard_cmd_control *dcc;  in create_discard_cmd_control()  local
2141 		dcc = SM_I(sbi)->dcc_info;  in create_discard_cmd_control()
2145 	dcc = f2fs_kzalloc(sbi, sizeof(struct discard_cmd_control), GFP_KERNEL);  in create_discard_cmd_control()
2146 	if (!dcc)  in create_discard_cmd_control()
2149 	dcc->discard_granularity = DEFAULT_DISCARD_GRANULARITY;  in create_discard_cmd_control()
2151 		dcc->discard_granularity = sbi->blocks_per_seg;  in create_discard_cmd_control()
2153 		dcc->discard_granularity = BLKS_PER_SEC(sbi);  in create_discard_cmd_control()
2155 	INIT_LIST_HEAD(&dcc->entry_list);  in create_discard_cmd_control()
2157 		INIT_LIST_HEAD(&dcc->pend_list[i]);  in create_discard_cmd_control()
2158 	INIT_LIST_HEAD(&dcc->wait_list);  in create_discard_cmd_control()
2159 	INIT_LIST_HEAD(&dcc->fstrim_list);  in create_discard_cmd_control()
2160 	mutex_init(&dcc->cmd_lock);  in create_discard_cmd_control()
2161 	atomic_set(&dcc->issued_discard, 0);  in create_discard_cmd_control()
2162 	atomic_set(&dcc->queued_discard, 0);  in create_discard_cmd_control()
2163 	atomic_set(&dcc->discard_cmd_cnt, 0);  in create_discard_cmd_control()
2164 	dcc->nr_discards = 0;  in create_discard_cmd_control()
2165 	dcc->max_discards = MAIN_SEGS(sbi) << sbi->log_blocks_per_seg;  in create_discard_cmd_control()
2166 	dcc->undiscard_blks = 0;  in create_discard_cmd_control()
2167 	dcc->next_pos = 0;  in create_discard_cmd_control()
2168 	dcc->root = RB_ROOT_CACHED;  in create_discard_cmd_control()
2169 	dcc->rbtree_check = false;  in create_discard_cmd_control()
2171 	init_waitqueue_head(&dcc->discard_wait_queue);  in create_discard_cmd_control()
2172 	SM_I(sbi)->dcc_info = dcc;  in create_discard_cmd_control()
2176 		kfree(dcc);  in create_discard_cmd_control()
2185 	struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;  in destroy_discard_cmd_control()  local
2187 	if (!dcc)  in destroy_discard_cmd_control()
2196 	if (unlikely(atomic_read(&dcc->discard_cmd_cnt)))  in destroy_discard_cmd_control()
2199 	kfree(dcc);  in destroy_discard_cmd_control()
3055 	struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;  in __issue_discard_cmd_range()  local
3066 	mutex_lock(&dcc->cmd_lock);  in __issue_discard_cmd_range()
3067 	if (unlikely(dcc->rbtree_check))  in __issue_discard_cmd_range()
3069 							&dcc->root, false));  in __issue_discard_cmd_range()
3071 	dc = (struct discard_cmd *)f2fs_lookup_rb_tree_ret(&dcc->root,  in __issue_discard_cmd_range()
3089 			list_move_tail(&dc->list, &dcc->fstrim_list);  in __issue_discard_cmd_range()
3102 			mutex_unlock(&dcc->cmd_lock);  in __issue_discard_cmd_range()
3118 	mutex_unlock(&dcc->cmd_lock);  in __issue_discard_cmd_range()