BP_GET_PSIZE
pbuf += BP_GET_PSIZE(gbp);
psize = BP_GET_PSIZE(bp);
size = BP_GET_PSIZE(bp);
if (size != BP_GET_PSIZE(bp) || cpfunc != ZIO_COMPRESS_OFF)
BP_GET_PSIZE(bp), buf, BP_GET_LSIZE(bp));
else if (size != BP_GET_PSIZE(bp))
bcopy(pbuf, buf, BP_GET_PSIZE(bp));
BP_GET_PSIZE(bp) : BP_GET_LSIZE(bp));
size = BP_GET_PSIZE(bp);