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Commit af2bf0d8 authored by Tao Ma's avatar Tao Ma
Browse files

ocfs2: Add ocfs2_gd_is_discontig. 



Add ocfs2_gd_is_discontig so that we can test whether
a group descriptor is discontiguous or not.

Signed-off-by: default avatarTao Ma <tao.ma@oracle.com>
parent 8571882c

fs/ocfs2/ocfs2_fs.h

+14 −0
Original line number Diff line number Diff line
@@ -1574,5 +1574,19 @@ static inline void ocfs2_set_de_type(struct ocfs2_dir_entry *de, 
	de->file_type = ocfs2_type_by_mode[(mode & S_IFMT)>>S_SHIFT];

}



static inline int ocfs2_gd_is_discontig(struct ocfs2_group_desc *gd)

{

	if ((offsetof(struct ocfs2_group_desc, bg_bitmap) +

	     le16_to_cpu(gd->bg_size)) !=

	    offsetof(struct ocfs2_group_desc, bg_list))

		return 0;

	/*

	 * Only valid to check l_next_free_rec if

	 * bg_bitmap + bg_size == bg_list.

	 */

	if (!gd->bg_list.l_next_free_rec)

		return 0;

	return 1;

}

#endif  /* _OCFS2_FS_H */