622 	struct flush_cmd_control *fcc = SM_I(sbi)->fcc_info;  in issue_flush_thread()  local
623 	wait_queue_head_t *q = &fcc->flush_wait_queue;  in issue_flush_thread()
628 	if (!llist_empty(&fcc->issue_list)) {  in issue_flush_thread()
632 		fcc->dispatch_list = llist_del_all(&fcc->issue_list);  in issue_flush_thread()
633 		fcc->dispatch_list = llist_reverse_order(fcc->dispatch_list);  in issue_flush_thread()
635 		cmd = llist_entry(fcc->dispatch_list, struct flush_cmd, llnode);  in issue_flush_thread()
638 		atomic_inc(&fcc->issued_flush);  in issue_flush_thread()
641 					  fcc->dispatch_list, llnode) {  in issue_flush_thread()
645 		fcc->dispatch_list = NULL;  in issue_flush_thread()
649 		kthread_should_stop() || !llist_empty(&fcc->issue_list));  in issue_flush_thread()
655 	struct flush_cmd_control *fcc = SM_I(sbi)->fcc_info;  in f2fs_issue_flush()  local
663 		atomic_inc(&fcc->queued_flush);  in f2fs_issue_flush()
665 		atomic_dec(&fcc->queued_flush);  in f2fs_issue_flush()
666 		atomic_inc(&fcc->issued_flush);  in f2fs_issue_flush()
670 	if (atomic_inc_return(&fcc->queued_flush) == 1 ||  in f2fs_issue_flush()
673 		atomic_dec(&fcc->queued_flush);  in f2fs_issue_flush()
675 		atomic_inc(&fcc->issued_flush);  in f2fs_issue_flush()
682 	llist_add(&cmd.llnode, &fcc->issue_list);  in f2fs_issue_flush()
691 	if (waitqueue_active(&fcc->flush_wait_queue))  in f2fs_issue_flush()
692 		wake_up(&fcc->flush_wait_queue);  in f2fs_issue_flush()
694 	if (fcc->f2fs_issue_flush) {  in f2fs_issue_flush()
696 		atomic_dec(&fcc->queued_flush);  in f2fs_issue_flush()
700 		list = llist_del_all(&fcc->issue_list);  in f2fs_issue_flush()
703 			atomic_dec(&fcc->queued_flush);  in f2fs_issue_flush()
712 					atomic_dec(&fcc->queued_flush);  in f2fs_issue_flush()
727 	struct flush_cmd_control *fcc;  in f2fs_create_flush_cmd_control()  local
731 		fcc = SM_I(sbi)->fcc_info;  in f2fs_create_flush_cmd_control()
732 		if (fcc->f2fs_issue_flush)  in f2fs_create_flush_cmd_control()
737 	fcc = f2fs_kzalloc(sbi, sizeof(struct flush_cmd_control), GFP_KERNEL);  in f2fs_create_flush_cmd_control()
738 	if (!fcc)  in f2fs_create_flush_cmd_control()
740 	atomic_set(&fcc->issued_flush, 0);  in f2fs_create_flush_cmd_control()
741 	atomic_set(&fcc->queued_flush, 0);  in f2fs_create_flush_cmd_control()
742 	init_waitqueue_head(&fcc->flush_wait_queue);  in f2fs_create_flush_cmd_control()
743 	init_llist_head(&fcc->issue_list);  in f2fs_create_flush_cmd_control()
744 	SM_I(sbi)->fcc_info = fcc;  in f2fs_create_flush_cmd_control()
749 	fcc->f2fs_issue_flush = kthread_run(issue_flush_thread, sbi,  in f2fs_create_flush_cmd_control()
751 	if (IS_ERR(fcc->f2fs_issue_flush)) {  in f2fs_create_flush_cmd_control()
752 		err = PTR_ERR(fcc->f2fs_issue_flush);  in f2fs_create_flush_cmd_control()
753 		kfree(fcc);  in f2fs_create_flush_cmd_control()
763 	struct flush_cmd_control *fcc = SM_I(sbi)->fcc_info;  in f2fs_destroy_flush_cmd_control()  local
765 	if (fcc && fcc->f2fs_issue_flush) {  in f2fs_destroy_flush_cmd_control()
766 		struct task_struct *flush_thread = fcc->f2fs_issue_flush;  in f2fs_destroy_flush_cmd_control()
768 		fcc->f2fs_issue_flush = NULL;  in f2fs_destroy_flush_cmd_control()
772 		kfree(fcc);  in f2fs_destroy_flush_cmd_control()