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
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+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 */