disk_exception
static struct disk_exception *get_exception(struct pstore *ps, void *ps_area,
return ((struct disk_exception *) ps_area) + index;
struct disk_exception *de = get_exception(ps, ps_area, index);
struct disk_exception *de = get_exception(ps, ps->area, index);
struct disk_exception *de = get_exception(ps, ps->area, index);
sizeof(struct disk_exception);