erase_block
rc = erase_block(nBlock);
static int erase_block(int nBlock);
pr_debug("region: %d erase_block = %u\n", i, t->geo[i].erase_block);
rc = erase_block(part, block_no);
rc = erase_block(part, best_block);
erase_block(part, block);
rc = erase_block(part, block);
geo->geo[n].erase_block = 1 << (p[1]-1);
u_int erase_block;