diff --git a/lib/blob/blobstore.h b/lib/blob/blobstore.h
index e1f6ce44b..4f9161fcf 100644
--- a/lib/blob/blobstore.h
+++ b/lib/blob/blobstore.h
@@ -536,12 +536,6 @@ bs_io_unit_to_back_dev_lba(struct spdk_blob *blob, uint64_t io_unit)
 	return io_unit * (blob->bs->io_unit_size / blob->back_bs_dev->blocklen);
 }
 
-static inline uint64_t
-bs_back_dev_lba_to_io_unit(struct spdk_blob *blob, uint64_t lba)
-{
-	return lba * (blob->back_bs_dev->blocklen / blob->bs->io_unit_size);
-}
-
 static inline uint64_t
 bs_cluster_to_extent_table_id(uint64_t cluster_num)
 {
@@ -630,19 +624,6 @@ bs_num_io_units_to_cluster_boundary(struct spdk_blob *blob, uint64_t io_unit)
 	return io_units_per_cluster - (io_unit % io_units_per_cluster);
 }
 
-/* Given a page offset into a blob, look up the number of pages until the
- * next cluster boundary.
- */
-static inline uint32_t
-bs_num_pages_to_cluster_boundary(struct spdk_blob *blob, uint64_t page)
-{
-	uint64_t	pages_per_cluster;
-
-	pages_per_cluster = blob->bs->pages_per_cluster;
-
-	return pages_per_cluster - (page % pages_per_cluster);
-}
-
 /* Given an io_unit offset into a blob, look up the number of pages into blob to beginning of current cluster */
 static inline uint32_t
 bs_io_unit_to_cluster_start(struct spdk_blob *blob, uint64_t io_unit)