563 	struct flush_cmd_control *fcc = SM_I(sbi)->fcc_info;  in issue_flush_thread()  local
564 	wait_queue_head_t *q = &fcc->flush_wait_queue;  in issue_flush_thread()
569 	if (!llist_empty(&fcc->issue_list)) {  in issue_flush_thread()
573 		fcc->dispatch_list = llist_del_all(&fcc->issue_list);  in issue_flush_thread()
574 		fcc->dispatch_list = llist_reverse_order(fcc->dispatch_list);  in issue_flush_thread()
576 		cmd = llist_entry(fcc->dispatch_list, struct flush_cmd, llnode);  in issue_flush_thread()
579 		atomic_inc(&fcc->issued_flush);  in issue_flush_thread()
582 					  fcc->dispatch_list, llnode) {  in issue_flush_thread()
586 		fcc->dispatch_list = NULL;  in issue_flush_thread()
590 		kthread_should_stop() || !llist_empty(&fcc->issue_list));  in issue_flush_thread()
596 	struct flush_cmd_control *fcc = SM_I(sbi)->fcc_info;  in f2fs_issue_flush()  local
604 		atomic_inc(&fcc->queued_flush);  in f2fs_issue_flush()
606 		atomic_dec(&fcc->queued_flush);  in f2fs_issue_flush()
607 		atomic_inc(&fcc->issued_flush);  in f2fs_issue_flush()
611 	if (atomic_inc_return(&fcc->queued_flush) == 1 ||  in f2fs_issue_flush()
614 		atomic_dec(&fcc->queued_flush);  in f2fs_issue_flush()
616 		atomic_inc(&fcc->issued_flush);  in f2fs_issue_flush()
623 	llist_add(&cmd.llnode, &fcc->issue_list);  in f2fs_issue_flush()
632 	if (waitqueue_active(&fcc->flush_wait_queue))  in f2fs_issue_flush()
633 		wake_up(&fcc->flush_wait_queue);  in f2fs_issue_flush()
635 	if (fcc->f2fs_issue_flush) {  in f2fs_issue_flush()
637 		atomic_dec(&fcc->queued_flush);  in f2fs_issue_flush()
641 		list = llist_del_all(&fcc->issue_list);  in f2fs_issue_flush()
644 			atomic_dec(&fcc->queued_flush);  in f2fs_issue_flush()
653 					atomic_dec(&fcc->queued_flush);  in f2fs_issue_flush()
668 	struct flush_cmd_control *fcc;  in f2fs_create_flush_cmd_control()  local
671 		fcc = SM_I(sbi)->fcc_info;  in f2fs_create_flush_cmd_control()
672 		if (fcc->f2fs_issue_flush)  in f2fs_create_flush_cmd_control()
677 	fcc = f2fs_kzalloc(sbi, sizeof(struct flush_cmd_control), GFP_KERNEL);  in f2fs_create_flush_cmd_control()
678 	if (!fcc)  in f2fs_create_flush_cmd_control()
680 	atomic_set(&fcc->issued_flush, 0);  in f2fs_create_flush_cmd_control()
681 	atomic_set(&fcc->queued_flush, 0);  in f2fs_create_flush_cmd_control()
682 	init_waitqueue_head(&fcc->flush_wait_queue);  in f2fs_create_flush_cmd_control()
683 	init_llist_head(&fcc->issue_list);  in f2fs_create_flush_cmd_control()
684 	SM_I(sbi)->fcc_info = fcc;  in f2fs_create_flush_cmd_control()
689 	fcc->f2fs_issue_flush = kthread_run(issue_flush_thread, sbi,  in f2fs_create_flush_cmd_control()
691 	if (IS_ERR(fcc->f2fs_issue_flush)) {  in f2fs_create_flush_cmd_control()
692 		int err = PTR_ERR(fcc->f2fs_issue_flush);  in f2fs_create_flush_cmd_control()
694 		fcc->f2fs_issue_flush = NULL;  in f2fs_create_flush_cmd_control()
703 	struct flush_cmd_control *fcc = SM_I(sbi)->fcc_info;  in f2fs_destroy_flush_cmd_control()  local
705 	if (fcc && fcc->f2fs_issue_flush) {  in f2fs_destroy_flush_cmd_control()
706 		struct task_struct *flush_thread = fcc->f2fs_issue_flush;  in f2fs_destroy_flush_cmd_control()
708 		fcc->f2fs_issue_flush = NULL;  in f2fs_destroy_flush_cmd_control()
712 		kfree(fcc);  in f2fs_destroy_flush_cmd_control()