DNODE_FLAG_USED_BYTES
#define DN_USED_BYTES(dnp) (((dnp)->dn_flags & DNODE_FLAG_USED_BYTES) ? \
(dn->dn_phys->dn_flags & DNODE_FLAG_USED_BYTES) ?
ASSERT((dn->dn_phys->dn_flags & DNODE_FLAG_USED_BYTES) == 0);
dn->dn_phys->dn_flags |= DNODE_FLAG_USED_BYTES;
#define DN_USED_BYTES(dnp) (((dnp)->dn_flags & DNODE_FLAG_USED_BYTES) ? \