676 	struct cachekey_disklist *item,  in list_remove()  argument
681 	if (item == NULL) return;  in list_remove()
684 	if (item->prev == 0)  in list_remove()
685 		*head = item->next;  in list_remove()
687 		item->prev->next = item->next;  in list_remove()
690 	if (item->next != 0)  in list_remove()
691 		item->next->prev = item->prev;  in list_remove()
694 	if (tail != 0 && *tail == item)  in list_remove()
695 		*tail = item->prev;  in list_remove()
697 	item->prev = item->next = 0;  in list_remove()
705 	struct cachekey_disklist *item,  in list_remove_hash()  argument
710 	if (item == NULL) return;  in list_remove_hash()
713 	if (item->prevhash == 0)  in list_remove_hash()
714 		*head = item->nexthash;  in list_remove_hash()
716 		item->prevhash->nexthash = item->nexthash;  in list_remove_hash()
719 	if (item->nexthash != 0)  in list_remove_hash()
720 		item->nexthash->prevhash = item->prevhash;  in list_remove_hash()
723 	if (tail != 0 && *tail == item)  in list_remove_hash()
724 		*tail = item->prevhash;  in list_remove_hash()
726 	item->prevhash = item->nexthash = 0;  in list_remove_hash()
734 	struct cachekey_disklist *item,  in list_insert()  argument
739 	if (item == NULL) return;  in list_insert()
743 		item->prev = *tail;  in list_insert()
744 		if (item->prev != 0)  in list_insert()
745 			item->prev->next = item;  in list_insert()
746 		item->next	= 0;  in list_insert()
747 		*tail		= item;  in list_insert()
749 			*head	= item;  in list_insert()
751 		item->next = *head;  in list_insert()
752 		if (item->next != 0)  in list_insert()
753 			item->next->prev = item;  in list_insert()
754 		item->prev	= 0;  in list_insert()
755 		*head		= item;  in list_insert()
763 	struct cachekey_disklist *item,  in list_insert_hash()  argument
768 	if (item == NULL) return;  in list_insert_hash()
772 		item->prevhash = *tail;  in list_insert_hash()
773 		if (item->prevhash != 0)  in list_insert_hash()
774 			item->prevhash->nexthash = item;  in list_insert_hash()
775 		item->nexthash	= 0;  in list_insert_hash()
776 		*tail		= item;  in list_insert_hash()
778 			*head	= item;  in list_insert_hash()
780 		item->nexthash	= *head;  in list_insert_hash()
781 		if (item->nexthash != 0)  in list_insert_hash()
782 			item->nexthash->prevhash = item;  in list_insert_hash()
783 		item->prevhash	= 0;  in list_insert_hash()
784 		*head		= item;  in list_insert_hash()