jffs2_sum_xref_flash
struct jffs2_sum_xref_flash *spr;
spr = (struct jffs2_sum_xref_flash *)sp;
struct jffs2_sum_xref_flash *sxref_ptr = wpage;
#define JFFS2_SUMMARY_XREF_SIZE (sizeof(struct jffs2_sum_xref_flash))
struct jffs2_sum_xref_flash r;