570 	struct flush_cmd_control *fcc = SM_I(sbi)->fcc_info;  in issue_flush_thread()  local
571 	wait_queue_head_t *q = &fcc->flush_wait_queue;  in issue_flush_thread()
576 	if (!llist_empty(&fcc->issue_list)) {  in issue_flush_thread()
580 		fcc->dispatch_list = llist_del_all(&fcc->issue_list);  in issue_flush_thread()
581 		fcc->dispatch_list = llist_reverse_order(fcc->dispatch_list);  in issue_flush_thread()
583 		cmd = llist_entry(fcc->dispatch_list, struct flush_cmd, llnode);  in issue_flush_thread()
586 		atomic_inc(&fcc->issued_flush);  in issue_flush_thread()
589 					  fcc->dispatch_list, llnode) {  in issue_flush_thread()
593 		fcc->dispatch_list = NULL;  in issue_flush_thread()
597 		kthread_should_stop() || !llist_empty(&fcc->issue_list));  in issue_flush_thread()
603 	struct flush_cmd_control *fcc = SM_I(sbi)->fcc_info;  in f2fs_issue_flush()  local
611 		atomic_inc(&fcc->queued_flush);  in f2fs_issue_flush()
613 		atomic_dec(&fcc->queued_flush);  in f2fs_issue_flush()
614 		atomic_inc(&fcc->issued_flush);  in f2fs_issue_flush()
618 	if (atomic_inc_return(&fcc->queued_flush) == 1 ||  in f2fs_issue_flush()
621 		atomic_dec(&fcc->queued_flush);  in f2fs_issue_flush()
623 		atomic_inc(&fcc->issued_flush);  in f2fs_issue_flush()
630 	llist_add(&cmd.llnode, &fcc->issue_list);  in f2fs_issue_flush()
639 	if (waitqueue_active(&fcc->flush_wait_queue))  in f2fs_issue_flush()
640 		wake_up(&fcc->flush_wait_queue);  in f2fs_issue_flush()
642 	if (fcc->f2fs_issue_flush) {  in f2fs_issue_flush()
644 		atomic_dec(&fcc->queued_flush);  in f2fs_issue_flush()
648 		list = llist_del_all(&fcc->issue_list);  in f2fs_issue_flush()
651 			atomic_dec(&fcc->queued_flush);  in f2fs_issue_flush()
660 					atomic_dec(&fcc->queued_flush);  in f2fs_issue_flush()
675 	struct flush_cmd_control *fcc;  in f2fs_create_flush_cmd_control()  local
678 		fcc = SM_I(sbi)->fcc_info;  in f2fs_create_flush_cmd_control()
679 		if (fcc->f2fs_issue_flush)  in f2fs_create_flush_cmd_control()
684 	fcc = f2fs_kzalloc(sbi, sizeof(struct flush_cmd_control), GFP_KERNEL);  in f2fs_create_flush_cmd_control()
685 	if (!fcc)  in f2fs_create_flush_cmd_control()
687 	atomic_set(&fcc->issued_flush, 0);  in f2fs_create_flush_cmd_control()
688 	atomic_set(&fcc->queued_flush, 0);  in f2fs_create_flush_cmd_control()
689 	init_waitqueue_head(&fcc->flush_wait_queue);  in f2fs_create_flush_cmd_control()
690 	init_llist_head(&fcc->issue_list);  in f2fs_create_flush_cmd_control()
691 	SM_I(sbi)->fcc_info = fcc;  in f2fs_create_flush_cmd_control()
696 	fcc->f2fs_issue_flush = kthread_run(issue_flush_thread, sbi,  in f2fs_create_flush_cmd_control()
698 	if (IS_ERR(fcc->f2fs_issue_flush)) {  in f2fs_create_flush_cmd_control()
699 		int err = PTR_ERR(fcc->f2fs_issue_flush);  in f2fs_create_flush_cmd_control()
701 		fcc->f2fs_issue_flush = NULL;  in f2fs_create_flush_cmd_control()
710 	struct flush_cmd_control *fcc = SM_I(sbi)->fcc_info;  in f2fs_destroy_flush_cmd_control()  local
712 	if (fcc && fcc->f2fs_issue_flush) {  in f2fs_destroy_flush_cmd_control()
713 		struct task_struct *flush_thread = fcc->f2fs_issue_flush;  in f2fs_destroy_flush_cmd_control()
715 		fcc->f2fs_issue_flush = NULL;  in f2fs_destroy_flush_cmd_control()
719 		kfree(fcc);  in f2fs_destroy_flush_cmd_control()