blist_free
blist_free(bl, 0, size);
blist_free(bl, da, count);
blist_free(newbl, count, newbl->bl_blocks - count);
blist_free(dest, blk, count);
blist_free(dest, blk + j, 1);
blist_free(dest, blk, count);
blist_free(dest, blk, radix);
extern void blist_free(blist_t blist, blist_blkno_t blkno, blist_blkno_t count);
blist_free(sdp->swd_blist, addr, size);
blist_free(sdp->swd_blist, startslot - sdp->swd_drumoffset, nslots);