BKEYDATA_PSIZE
- (BKEYDATA_PSIZE(0) + ALIGN(1, 4));
needed += BKEYDATA_PSIZE(key->size);
needed += BKEYDATA_PSIZE(data_size);
have_bytes = BKEYDATA_PSIZE(bk->len);
need_bytes += BKEYDATA_PSIZE(data_size);
BKEYDATA_PSIZE(bk->len) : BOVERFLOW_PSIZE;
BKEYDATA_PSIZE(bk->len) : BOVERFLOW_PSIZE;
size = BKEYDATA_PSIZE(dbt->size);