staging: erofs: keep up erofs_fs.h with erofs-outofstaging patchset

/* 20 */__le32 i_ino;           /* only used for 32-bit stat compatibility */

/* 24 */__le16 i_uid;

/* 26 */__le16 i_gid;

/* 28 */__le32 i_checksum;

/* 28 */__le32 i_reserved2;

} __packed;

/* 32 bytes on-disk inode */

#define EROFS_INODE_LAYOUT_V2   1

struct erofs_inode_v2 {

	__le16 i_advise;

/*  0 */__le16 i_advise;

/* 1 header + n-1 * 4 bytes inline xattr to keep continuity */

	__le16 i_xattr_icount;

	__le16 i_mode;

	__le16 i_reserved;      /* 8 bytes */

	__le64 i_size;          /* 16 bytes */

	union {

/*  2 */__le16 i_xattr_icount;

/*  4 */__le16 i_mode;

/*  6 */__le16 i_reserved;

/*  8 */__le64 i_size;

/* 16 */union {

		/* file total compressed blocks for data mapping 1 */

		__le32 compressed_blocks;

		__le32 raw_blkaddr;

	} i_u __packed;

	/* only used for 32-bit stat compatibility */

	__le32 i_ino;           /* 24 bytes */

	__le32 i_uid;

	__le32 i_gid;

	__le64 i_ctime;         /* 32 bytes */

	__le32 i_ctime_nsec;

	__le32 i_nlink;

	__u8   i_reserved2[12];

	__le32 i_checksum;      /* 64 bytes */

} __packed;

/* 20 */__le32 i_ino;

/* 24 */__le32 i_uid;

/* 28 */__le32 i_gid;

/* 32 */__le64 i_ctime;

/* 40 */__le32 i_ctime_nsec;

/* 44 */__le32 i_nlink;

/* 48 */__u8   i_reserved2[16];

} __packed;                     /* 64 bytes */

#define EROFS_MAX_SHARED_XATTRS         (128)

/* h_shared_count between 129 ... 255 are special # */

 * for read-only fs, no need to introduce h_refcount

 */

struct erofs_xattr_ibody_header {

	__le32 h_checksum;

	__le32 h_reserved;

	__u8   h_shared_count;

	__u8   h_reserved[7];

	__u8   h_reserved2[7];

	__le32 h_shared_xattrs[0];      /* shared xattr id array */

} __packed;