481 void mmb_init(struct mapping_metadata_bhs *mmb, struct address_space *mapping)  in mmb_init()  argument
483 	spin_lock_init(&mmb->lock);  in mmb_init()
484 	INIT_LIST_HEAD(&mmb->list);  in mmb_init()
485 	mmb->mapping = mapping;  in mmb_init()
489 static void __remove_assoc_queue(struct mapping_metadata_bhs *mmb,  in __remove_assoc_queue()  argument
492 	lockdep_assert_held(&mmb->lock);  in __remove_assoc_queue()
500 	struct mapping_metadata_bhs *mmb;  in remove_assoc_queue()  local
512 		mmb = READ_ONCE(bh->b_mmb);  in remove_assoc_queue()
513 		if (mmb) {  in remove_assoc_queue()
514 			spin_lock(&mmb->lock);  in remove_assoc_queue()
515 			if (bh->b_mmb == mmb)  in remove_assoc_queue()
516 				__remove_assoc_queue(mmb, bh);  in remove_assoc_queue()
517 			spin_unlock(&mmb->lock);  in remove_assoc_queue()
523 bool mmb_has_buffers(struct mapping_metadata_bhs *mmb)  in mmb_has_buffers()  argument
525 	return !list_empty(&mmb->list);  in mmb_has_buffers()
550 int mmb_sync(struct mapping_metadata_bhs *mmb)  in mmb_sync()  argument
557 	if (!mmb_has_buffers(mmb))  in mmb_sync()
562 	spin_lock(&mmb->lock);  in mmb_sync()
563 	while (!list_empty(&mmb->list)) {  in mmb_sync()
564 		bh = BH_ENTRY(mmb->list.next);  in mmb_sync()
565 		WARN_ON_ONCE(bh->b_mmb != mmb);  in mmb_sync()
566 		__remove_assoc_queue(mmb, bh);  in mmb_sync()
572 			bh->b_mmb = mmb;  in mmb_sync()
575 				spin_unlock(&mmb->lock);  in mmb_sync()
592 				spin_lock(&mmb->lock);  in mmb_sync()
597 	spin_unlock(&mmb->lock);  in mmb_sync()
599 	spin_lock(&mmb->lock);  in mmb_sync()
604 		__remove_assoc_queue(mmb, bh);  in mmb_sync()
609 			list_add(&bh->b_assoc_buffers, &mmb->list);  in mmb_sync()
610 			bh->b_mmb = mmb;  in mmb_sync()
612 		spin_unlock(&mmb->lock);  in mmb_sync()
617 		spin_lock(&mmb->lock);  in mmb_sync()
619 	spin_unlock(&mmb->lock);  in mmb_sync()
638 int mmb_fsync_noflush(struct file *file, struct mapping_metadata_bhs *mmb,  in mmb_fsync_noflush()  argument
649 	if (mmb)  in mmb_fsync_noflush()
650 		ret = mmb_sync(mmb);  in mmb_fsync_noflush()
684 int mmb_fsync(struct file *file, struct mapping_metadata_bhs *mmb,  in mmb_fsync()  argument
690 	ret = mmb_fsync_noflush(file, mmb, start, end, datasync);  in mmb_fsync()
717 			   struct mapping_metadata_bhs *mmb)  in mmb_mark_buffer_dirty()  argument
721 		spin_lock(&mmb->lock);  in mmb_mark_buffer_dirty()
722 		list_move_tail(&bh->b_assoc_buffers, &mmb->list);  in mmb_mark_buffer_dirty()
723 		bh->b_mmb = mmb;  in mmb_mark_buffer_dirty()
724 		spin_unlock(&mmb->lock);  in mmb_mark_buffer_dirty()
798 void mmb_invalidate(struct mapping_metadata_bhs *mmb)  in mmb_invalidate()  argument
800 	if (mmb_has_buffers(mmb)) {  in mmb_invalidate()
801 		spin_lock(&mmb->lock);  in mmb_invalidate()
802 		while (!list_empty(&mmb->list))  in mmb_invalidate()
803 			__remove_assoc_queue(mmb, BH_ENTRY(mmb->list.next));  in mmb_invalidate()
804 		spin_unlock(&mmb->lock);  in mmb_invalidate()