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kfloppy'ext2_group_desc (./kdeutils/kfloppy/e2fs/include/linux/ext2_fs.h:138)

struct ext2_group_desc
{
	__u32	bg_block_bitmap;		/* Blocks bitmap block */
	__u32	bg_inode_bitmap;		/* Inodes bitmap block */
	__u32	bg_inode_table;		/* Inodes table block */
	__u16	bg_free_blocks_count;	/* Free blocks count */
	__u16	bg_free_inodes_count;	/* Free inodes count */
	__u16	bg_used_dirs_count;	/* Directories count */
	__u16	bg_pad;
	__u32	bg_reserved[3];
};

/*
 * Macro-instructions used to manage group descriptors
 */