Functionally LGTM. But I'm not sure if the discussion with Paolo is
resolved, so here's a couple more nit picks:
On Tue, 29 Apr 2025 03:26:40 +0000 Mina Almasry wrote:
> + case SCM_DEVMEM_DMABUF:
> + if (cmsg->cmsg_len != CMSG_LEN(sizeof(u32)))
> + return -EINVAL;
> + sockc->dmabuf_id = *(u32 *)CMSG_DATA(cmsg);
> +
> break;
The empty line before break is very odd.
> + sockc = (struct sockcm_cookie){ .tsflags = READ_ONCE(sk->sk_tsflags),
> + .dmabuf_id = 0 };
Too ugly to exist, either full init fits on a line or there needs to be
a line break after {.
