ext2_debug
ext2_debug("goal=%lu.\n", goal);
ext2_debug("using block group %d(%d)\n",
ext2_debug ("freeing block(s) %lu-%lu\n", block, block + count - 1);
ext2_debug("Bit not found near goal\n");
ext2_debug ("freeing inode %lu\n", ino);
ext2_debug("allocating inode %lu\n", inode->i_ino);
ext2_debug ("cmd = %u, arg = %lu\n", cmd, arg);
ext2_debug("setting valid to 0\n");
ext2_debug ("Checking group descriptors");