636  * @partition: The slab depot partition
647 int vdo_configure_slab_depot(const struct partition *partition,  in vdo_configure_slab_depot()  argument
657 		      __func__, (unsigned long long) partition->count,  in vdo_configure_slab_depot()
658 		      (unsigned long long) partition->offset,  in vdo_configure_slab_depot()
662 	slab_count = (partition->count / slab_size);  in vdo_configure_slab_depot()
671 	last_block = partition->offset + total_slab_blocks;  in vdo_configure_slab_depot()
675 		.first_block = partition->offset,  in vdo_configure_slab_depot()
683 		      (unsigned long long) (partition->count - (last_block - partition->offset)));  in vdo_configure_slab_depot()
773  * allocate_partition() - Allocate a partition and add it to a layout.
774  * @layout: The layout containing the partition.
775  * @id: The id of the partition.
776  * @offset: The offset into the layout at which the partition begins.
777  * @size: The size of the partition in blocks.
784 	struct partition *partition;  in allocate_partition()  local
787 	result = vdo_allocate(1, struct partition, __func__, &partition);  in allocate_partition()
791 	partition->id = id;  in allocate_partition()
792 	partition->offset = offset;  in allocate_partition()
793 	partition->count = size;  in allocate_partition()
794 	partition->next = layout->head;  in allocate_partition()
795 	layout->head = partition;  in allocate_partition()
801  * make_partition() - Create a new partition from the beginning or end of the unused space in a
804  * @id: The id of the partition to make.
806  * @beginning: True if the partition should start at the beginning of the unused space.
849  * @block_map_blocks: The size of the block map partition.
850  * @journal_blocks: The size of the journal partition.
851  * @summary_blocks: The size of the slab summary partition.
913 		struct partition *part = layout->head;  in vdo_uninitialize_layout()
923  * vdo_get_partition() - Get a partition by id.
924  * @layout: The layout from which to get a partition.
925  * @id: The id of the partition.
926  * @partition_ptr: A pointer to hold the partition.
931 		      struct partition **partition_ptr)  in vdo_get_partition()
933 	struct partition *partition;  in vdo_get_partition()  local
935 	for (partition = layout->head; partition != NULL; partition = partition->next) {  in vdo_get_partition()
936 		if (partition->id == id) {  in vdo_get_partition()
938 				*partition_ptr = partition;  in vdo_get_partition()
947  * vdo_get_known_partition() - Get a partition by id from a validated layout.
948  * @layout: The layout from which to get a partition.
949  * @id: The id of the partition.
951  * Return: the partition
953 struct partition *vdo_get_known_partition(struct layout *layout, enum partition_id id)  in vdo_get_known_partition()
955 	struct partition *partition;  in vdo_get_known_partition()  local
956 	int result = vdo_get_partition(layout, id, &partition);  in vdo_get_known_partition()
958 	VDO_ASSERT_LOG_ONLY(result == VDO_SUCCESS, "layout has expected partition: %u", id);  in vdo_get_known_partition()
960 	return partition;  in vdo_get_known_partition()
965 	const struct partition *partition;  in encode_layout()  local
971 			    "layout partition count must fit in a byte");  in encode_layout()
983 	for (partition = layout->head; partition != NULL; partition = partition->next) {  in encode_layout()
984 		buffer[(*offset)++] = partition->id;  in encode_layout()
985 		encode_u64_le(buffer, offset, partition->offset);  in encode_layout()
988 		encode_u64_le(buffer, offset, partition->count);  in encode_layout()
1000 	struct partition *partition;  in decode_layout()  local
1057 		result = vdo_get_partition(layout, REQUIRED_PARTITIONS[i], &partition);  in decode_layout()
1061 						      "layout is missing required partition %u",  in decode_layout()
1065 		start += partition->count;  in decode_layout()