linux-kernel - Re: get rid of the address_space override in setsockopt

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Date:   Wed, 22 Jul 2020 10:09:41 -0700
From:   Alexei Starovoitov <alexei.starovoitov@...il.com>
To:     Christoph Hellwig <hch@....de>
Cc:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Alexey Kuznetsov <kuznet@....inr.ac.ru>,
        Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
        Eric Dumazet <edumazet@...gle.com>,
        Linux Crypto Mailing List <linux-crypto@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Network Development <netdev@...r.kernel.org>,
        bpf <bpf@...r.kernel.org>,
        netfilter-devel <netfilter-devel@...r.kernel.org>,
        coreteam@...filter.org, linux-sctp@...r.kernel.org,
        linux-hams@...r.kernel.org, linux-bluetooth@...r.kernel.org,
        "moderated list:ETHERNET BRIDGE" <bridge@...ts.linux-foundation.org>,
        linux-can@...r.kernel.org, dccp@...r.kernel.org,
        linux-decnet-user@...ts.sourceforge.net,
        linux-wpan@...r.kernel.org,
        linux-s390 <linux-s390@...r.kernel.org>, mptcp@...ts.01.org,
        lvs-devel@...r.kernel.org, rds-devel@....oracle.com,
        linux-afs@...ts.infradead.org,
        tipc-discussion@...ts.sourceforge.net, linux-x25@...r.kernel.org
Subject: Re: get rid of the address_space override in setsockopt

On Wed, Jul 22, 2020 at 12:56 AM Christoph Hellwig <hch@....de> wrote:
>
> On Mon, Jul 20, 2020 at 01:47:56PM -0700, Alexei Starovoitov wrote:
> > > a kernel pointer.  This is something that works for most common sockopts
> > > (and is something that the ePBF support relies on), but unfortunately
> > > in various corner cases we either don't use the passed in length, or in
> > > one case actually copy data back from setsockopt, so we unfortunately
> > > can't just always do the copy in the highlevel code, which would have
> > > been much nicer.
> >
> > could you rebase on bpf-next tree and we can route it this way then?
> > we'll also test the whole thing before applying.
>
> The bpf-next tree is missing all my previous setsockopt cleanups, so
> there series won't apply.

Right. I've realized that after sending that email two days ago.
Now bpf-next->net-next PR is pending and as soon as it's merged
bpf-next will have all the recent bits.