ftl: replace erase_block() with a direct call to flash_erase()

source/ftl/ftl.c

@@ -67,24 +67,6 @@ static int find_block_div(struct ftl_journal *j)
 	return 0;
 }
 
-/* Erases an entire block by erasing the smallest units that can be erased that
- * span the block.
- */
-static int erase_block(struct ftl_journal *j, uint32_t block)
-{
-	uint32_t pages_per_block = j->log2_block_size - j->log2_erase_size;
-	uint32_t page = block << pages_per_block;
-	uint32_t i;
-
-	for (i = 0; i < UINT32_C(1) << pages_per_block; ++i) {
-		if (flash_erase(j->dev, page + i,
-		    UINT32_C(1) << j->log2_erase_size) < 0)
-			return -1;
-	}
-
-	return 0;
-}
-
 static void reset_journal(struct ftl_journal *j)
 {
 	j->log2_erase_size = ilog2(4 * KIB);
@@ -578,7 +560,8 @@ static int prepare_head(struct ftl_journal *j)
 	if (free_tail(j) < 0)
 		return -1;
 
-	return erase_block(j, j->head >> log2_pages_per_block);
+	return flash_erase(j->dev, j->head >> log2_pages_per_block,
+		j->log2_block_size);
 }
 
 /* Prepares the head for writing, writes the user page to the current available