972 	struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;  in __create_discard_cmd()  local
978 	pend_list = &dcc->pend_list[plist_idx(len)];  in __create_discard_cmd()
994 	atomic_inc(&dcc->discard_cmd_cnt);  in __create_discard_cmd()
995 	dcc->undiscard_blks += len;  in __create_discard_cmd()
1006 	struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;  in __attach_discard_cmd()  local
1012 	rb_insert_color_cached(&dc->rb_node, &dcc->root, leftmost);  in __attach_discard_cmd()
1017 static void __detach_discard_cmd(struct discard_cmd_control *dcc,  in __detach_discard_cmd()  argument
1021 		atomic_sub(dc->queued, &dcc->queued_discard);  in __detach_discard_cmd()
1024 	rb_erase_cached(&dc->rb_node, &dcc->root);  in __detach_discard_cmd()
1025 	dcc->undiscard_blks -= dc->len;  in __detach_discard_cmd()
1029 	atomic_dec(&dcc->discard_cmd_cnt);  in __detach_discard_cmd()
1035 	struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;  in __remove_discard_cmd()  local
1057 	__detach_discard_cmd(dcc, dc);  in __remove_discard_cmd()
1157 	struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;  in __submit_discard_cmd()  local
1159 					&(dcc->fstrim_list) : &(dcc->wait_list);  in __submit_discard_cmd()
1228 		atomic_inc(&dcc->queued_discard);  in __submit_discard_cmd()
1240 		atomic_inc(&dcc->issued_discard);  in __submit_discard_cmd()
1251 		dcc->undiscard_blks -= len;  in __submit_discard_cmd()
1263 	struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;  in __insert_discard_tree()  local
1274 	p = f2fs_lookup_rb_tree_for_insert(sbi, &dcc->root, &parent,  in __insert_discard_tree()
1281 static void __relocate_discard_cmd(struct discard_cmd_control *dcc,  in __relocate_discard_cmd()  argument
1284 	list_move_tail(&dc->list, &dcc->pend_list[plist_idx(dc->len)]);  in __relocate_discard_cmd()
1290 	struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;  in __punch_discard_cmd()  local
1299 	dcc->undiscard_blks -= di.len;  in __punch_discard_cmd()
1303 		dcc->undiscard_blks += dc->len;  in __punch_discard_cmd()
1304 		__relocate_discard_cmd(dcc, dc);  in __punch_discard_cmd()
1318 			dcc->undiscard_blks += dc->len;  in __punch_discard_cmd()
1319 			__relocate_discard_cmd(dcc, dc);  in __punch_discard_cmd()
1328 	struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;  in __update_discard_tree_range()  local
1338 	dc = (struct discard_cmd *)f2fs_lookup_rb_tree_ret(&dcc->root,  in __update_discard_tree_range()
1380 			dcc->undiscard_blks += di.len;  in __update_discard_tree_range()
1381 			__relocate_discard_cmd(dcc, prev_dc);  in __update_discard_tree_range()
1394 			dcc->undiscard_blks += di.len;  in __update_discard_tree_range()
1395 			__relocate_discard_cmd(dcc, next_dc);  in __update_discard_tree_range()
1439 	struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;  in __issue_discard_cmd_orderly()  local
1444 	unsigned int pos = dcc->next_pos;  in __issue_discard_cmd_orderly()
1448 	mutex_lock(&dcc->cmd_lock);  in __issue_discard_cmd_orderly()
1449 	dc = (struct discard_cmd *)f2fs_lookup_rb_tree_ret(&dcc->root,  in __issue_discard_cmd_orderly()
1471 		dcc->next_pos = dc->lstart + dc->len;  in __issue_discard_cmd_orderly()
1486 		dcc->next_pos = 0;  in __issue_discard_cmd_orderly()
1488 	mutex_unlock(&dcc->cmd_lock);  in __issue_discard_cmd_orderly()
1501 	struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;  in __issue_discard_cmd()  local
1524 		pend_list = &dcc->pend_list[i];  in __issue_discard_cmd()
1526 		mutex_lock(&dcc->cmd_lock);  in __issue_discard_cmd()
1529 		if (unlikely(dcc->rbtree_check))  in __issue_discard_cmd()
1531 							&dcc->root, false));  in __issue_discard_cmd()
1553 		mutex_unlock(&dcc->cmd_lock);  in __issue_discard_cmd()
1572 	struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;  in __drop_discard_cmd()  local
1578 	mutex_lock(&dcc->cmd_lock);  in __drop_discard_cmd()
1580 		pend_list = &dcc->pend_list[i];  in __drop_discard_cmd()
1587 	mutex_unlock(&dcc->cmd_lock);  in __drop_discard_cmd()
1600 	struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;  in __wait_one_discard_bio()  local
1604 	mutex_lock(&dcc->cmd_lock);  in __wait_one_discard_bio()
1612 	mutex_unlock(&dcc->cmd_lock);  in __wait_one_discard_bio()
1621 	struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;  in __wait_discard_cmd_range()  local
1623 					&(dcc->fstrim_list) : &(dcc->wait_list);  in __wait_discard_cmd_range()
1631 	mutex_lock(&dcc->cmd_lock);  in __wait_discard_cmd_range()
1648 	mutex_unlock(&dcc->cmd_lock);  in __wait_discard_cmd_range()
1679 	struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;  in f2fs_wait_discard_bio()  local
1683 	mutex_lock(&dcc->cmd_lock);  in f2fs_wait_discard_bio()
1684 	dc = (struct discard_cmd *)f2fs_lookup_rb_tree(&dcc->root,  in f2fs_wait_discard_bio()
1694 	mutex_unlock(&dcc->cmd_lock);  in f2fs_wait_discard_bio()
1702 	struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;  in f2fs_stop_discard_thread()  local
1704 	if (dcc && dcc->f2fs_issue_discard) {  in f2fs_stop_discard_thread()
1705 		struct task_struct *discard_thread = dcc->f2fs_issue_discard;  in f2fs_stop_discard_thread()
1707 		dcc->f2fs_issue_discard = NULL;  in f2fs_stop_discard_thread()
1715 	struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;  in f2fs_issue_discard_timeout()  local
1720 					dcc->discard_granularity);  in f2fs_issue_discard_timeout()
1727 	f2fs_bug_on(sbi, atomic_read(&dcc->discard_cmd_cnt));  in f2fs_issue_discard_timeout()
1734 	struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;  in issue_discard_thread()  local
1735 	wait_queue_head_t *q = &dcc->discard_wait_queue;  in issue_discard_thread()
1744 					dcc->discard_granularity);  in issue_discard_thread()
1748 				dcc->discard_wake,  in issue_discard_thread()
1751 		if (dcc->discard_wake)  in issue_discard_thread()
1752 			dcc->discard_wake = 0;  in issue_discard_thread()
1755 		if (atomic_read(&dcc->queued_discard))  in issue_discard_thread()
1975 	struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;  in f2fs_clear_prefree_segments()  local
1976 	struct list_head *head = &dcc->entry_list;  in f2fs_clear_prefree_segments()
2066 		dcc->nr_discards -= total_len;  in f2fs_clear_prefree_segments()
2075 	struct discard_cmd_control *dcc;  in create_discard_cmd_control()  local
2079 		dcc = SM_I(sbi)->dcc_info;  in create_discard_cmd_control()
2083 	dcc = f2fs_kzalloc(sbi, sizeof(struct discard_cmd_control), GFP_KERNEL);  in create_discard_cmd_control()
2084 	if (!dcc)  in create_discard_cmd_control()
2087 	dcc->discard_granularity = DEFAULT_DISCARD_GRANULARITY;  in create_discard_cmd_control()
2088 	INIT_LIST_HEAD(&dcc->entry_list);  in create_discard_cmd_control()
2090 		INIT_LIST_HEAD(&dcc->pend_list[i]);  in create_discard_cmd_control()
2091 	INIT_LIST_HEAD(&dcc->wait_list);  in create_discard_cmd_control()
2092 	INIT_LIST_HEAD(&dcc->fstrim_list);  in create_discard_cmd_control()
2093 	mutex_init(&dcc->cmd_lock);  in create_discard_cmd_control()
2094 	atomic_set(&dcc->issued_discard, 0);  in create_discard_cmd_control()
2095 	atomic_set(&dcc->queued_discard, 0);  in create_discard_cmd_control()
2096 	atomic_set(&dcc->discard_cmd_cnt, 0);  in create_discard_cmd_control()
2097 	dcc->nr_discards = 0;  in create_discard_cmd_control()
2098 	dcc->max_discards = MAIN_SEGS(sbi) << sbi->log_blocks_per_seg;  in create_discard_cmd_control()
2099 	dcc->undiscard_blks = 0;  in create_discard_cmd_control()
2100 	dcc->next_pos = 0;  in create_discard_cmd_control()
2101 	dcc->root = RB_ROOT_CACHED;  in create_discard_cmd_control()
2102 	dcc->rbtree_check = false;  in create_discard_cmd_control()
2104 	init_waitqueue_head(&dcc->discard_wait_queue);  in create_discard_cmd_control()
2105 	SM_I(sbi)->dcc_info = dcc;  in create_discard_cmd_control()
2107 	dcc->f2fs_issue_discard = kthread_run(issue_discard_thread, sbi,  in create_discard_cmd_control()
2109 	if (IS_ERR(dcc->f2fs_issue_discard)) {  in create_discard_cmd_control()
2110 		err = PTR_ERR(dcc->f2fs_issue_discard);  in create_discard_cmd_control()
2111 		kfree(dcc);  in create_discard_cmd_control()
2121 	struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;  in destroy_discard_cmd_control()  local
2123 	if (!dcc)  in destroy_discard_cmd_control()
2132 	if (unlikely(atomic_read(&dcc->discard_cmd_cnt)))  in destroy_discard_cmd_control()
2135 	kfree(dcc);  in destroy_discard_cmd_control()
2969 	struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;  in __issue_discard_cmd_range()  local
2980 	mutex_lock(&dcc->cmd_lock);  in __issue_discard_cmd_range()
2981 	if (unlikely(dcc->rbtree_check))  in __issue_discard_cmd_range()
2983 							&dcc->root, false));  in __issue_discard_cmd_range()
2985 	dc = (struct discard_cmd *)f2fs_lookup_rb_tree_ret(&dcc->root,  in __issue_discard_cmd_range()
3003 			list_move_tail(&dc->list, &dcc->fstrim_list);  in __issue_discard_cmd_range()
3016 			mutex_unlock(&dcc->cmd_lock);  in __issue_discard_cmd_range()
3032 	mutex_unlock(&dcc->cmd_lock);  in __issue_discard_cmd_range()