EBA_RESERVED_PEBS
if (ubi->avail_pebs < EBA_RESERVED_PEBS) {
ubi->avail_pebs, EBA_RESERVED_PEBS);
ubi->avail_pebs -= EBA_RESERVED_PEBS;
ubi->rsvd_pebs += EBA_RESERVED_PEBS;
int reserved = WL_RESERVED_PEBS + EBA_RESERVED_PEBS +