dm vdo: Remove unused uds_compute_index_size

uds_compute_index_size() has been unused since it was added in
commit b46d79b ("dm vdo: add deduplication index storage interface")

Remove it.

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Reviewed-by: Matthew Sakai <msakai@redhat.com>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>

Author: Dr. David Alan Gilbert

drivers/md/dm-vdo/indexer/index-layout.c

@@ -248,32 +248,6 @@ static int __must_check compute_sizes(const struct uds_configuration *config,
 	return UDS_SUCCESS;
 }
 
-int uds_compute_index_size(const struct uds_parameters *parameters, u64 *index_size)
-{
-	int result;
-	struct uds_configuration *index_config;
-	struct save_layout_sizes sizes;
-
-	if (index_size == NULL) {
-		vdo_log_error("Missing output size pointer");
-		return -EINVAL;
-	}
-
-	result = uds_make_configuration(parameters, &index_config);
-	if (result != UDS_SUCCESS) {
-		vdo_log_error_strerror(result, "cannot compute index size");
-		return uds_status_to_errno(result);
-	}
-
-	result = compute_sizes(index_config, &sizes);
-	uds_free_configuration(index_config);
-	if (result != UDS_SUCCESS)
-		return uds_status_to_errno(result);
-
-	*index_size = sizes.total_size;
-	return UDS_SUCCESS;
-}
-
 /* Create unique data using the current time and a pseudorandom number. */
 static void create_unique_nonce_data(u8 *buffer)
 {

drivers/md/dm-vdo/indexer/indexer.h

@@ -283,10 +283,6 @@ struct uds_request {
 	enum uds_index_region location;
 };
 
-/* Compute the number of bytes needed to store an index. */
-int __must_check uds_compute_index_size(const struct uds_parameters *parameters,
-					u64 *index_size);
-
 /* A session is required for most index operations. */
 int __must_check uds_create_index_session(struct uds_index_session **session);