diff --git a/dm-sflc/src/lite/crypto.c b/dm-sflc/src/lite/crypto.c
index 3d5577a..086e4a8 100644
--- a/dm-sflc/src/lite/crypto.c
+++ b/dm-sflc/src/lite/crypto.c
@@ -143,7 +143,7 @@ static int crypt_blocks_generic(struct crypto_sync_skcipher *tfm,
 			next_sg_dst = map_sg(sg_dst, dst, dst_iter);
 		}
 
-		err = crypt_sg(tfm, sg_src, *p_sg_dst, pblk_num, rw);
+		err = crypt_block_sg(tfm, sg_src, *p_sg_dst, pblk_num, rw);
 		if (err)
 			goto out;
 	}
@@ -157,12 +157,6 @@ out:
 }
 
 
-int sflite_crypt_bio(struct crypto_sync_skcipher *tfm, struct bio *src_bio,
-		struct bio *dst_bio, u64 num_blocks, u64 first_pblk_num, int rw)
-{
-
-}
-
 /* Encrypt-decrypt a single block (memory buffer is a page) */
 int sflite_crypt_block_page(struct crypto_sync_skcipher *tfm, struct page *src_page,
 		struct page *dst_page, u64 pblk_num, int rw)
@@ -183,7 +177,7 @@ int sflite_crypt_block_page(struct crypto_sync_skcipher *tfm, struct page *src_p
 		sg_set_page(&dst, dst_page, SFLITE_BLOCK_SIZE, 0);
 	}
 
-	return crypt_sg(tfm, &src, p_dst, pblk_num, rw);
+	return crypt_block_sg(tfm, &src, p_dst, pblk_num, rw);
 }
 
 
@@ -193,7 +187,7 @@ int sflite_crypt_block_page(struct crypto_sync_skcipher *tfm, struct page *src_p
  *---------------------------------------
  */
 
-unsigned count_sgs_from_buf(void *buf, sector_t nblocks)
+static unsigned count_sgs_from_buf(void *buf, sector_t nblocks)
 {
 	/* For simplicity, enforce that the offset is aligned to the block size
 	 * so that all blocks require the same number of scatterlists.
@@ -203,7 +197,7 @@ unsigned count_sgs_from_buf(void *buf, sector_t nblocks)
 	return nblocks * DIV_ROUND_UP(SFLITE_BLOCK_SIZE, PAGE_SIZE);
 }
 
-struct scatterlist* map_sg_from_buf(struct scatterlist *sg, void *buf, void *iter)
+static struct scatterlist* map_sg_from_buf(struct scatterlist *sg, void *buf, void *iter)
 {
 	unsigned long *iter_off = iter;
 	bool is_vmalloc = is_vmalloc_addr(buf);