ib_access_writable
umem->writable = ib_access_writable(access);
if (ib_access_writable(new_access_flags) && !umem->writable)
umem->writable = ib_access_writable(access);
umem->writable = ib_access_writable(access);
umem_odp->umem.writable = ib_access_writable(access);
if (!ib_access_writable(access_flags)) {
if (ib_access_writable(mr_access_flags) &&