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Re: get rid of the address_space override in setsockopt

To: Alexei Starovoitov <alexei.starovoitov@xxxxxxxxx>
Subject: Re: get rid of the address_space override in setsockopt
Cc: Christoph Hellwig <hch@xxxxxx>, "David S. Miller" <davem@xxxxxxxxxxxxx>, Jakub Kicinski <kuba@xxxxxxxxxx>, Alexei Starovoitov <ast@xxxxxxxxxx>, Daniel Borkmann <daniel@xxxxxxxxxxxxx>, Alexey Kuznetsov <kuznet@xxxxxxxxxxxxx>, Hideaki YOSHIFUJI <yoshfuji@xxxxxxxxxxxxxx>, Eric Dumazet <edumazet@xxxxxxxxxx>, linux-crypto@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, netdev@xxxxxxxxxxxxxxx, bpf@xxxxxxxxxxxxxxx, netfilter-devel@xxxxxxxxxxxxxxx, coreteam@xxxxxxxxxxxxx, linux-sctp@xxxxxxxxxxxxxxx, linux-hams@xxxxxxxxxxxxxxx, linux-bluetooth@xxxxxxxxxxxxxxx, bridge@xxxxxxxxxxxxxxxxxxxxxxxxxx, linux-can@xxxxxxxxxxxxxxx, dccp@xxxxxxxxxxxxxxx, linux-decnet-user@xxxxxxxxxxxxxxxxxxxxx, linux-wpan@xxxxxxxxxxxxxxx, linux-s390@xxxxxxxxxxxxxxx, mptcp@xxxxxxxxxxxx, lvs-devel@xxxxxxxxxxxxxxx, rds-devel@xxxxxxxxxxxxxx, linux-afs@xxxxxxxxxxxxxxxxxxx, tipc-discussion@xxxxxxxxxxxxxxxxxxxxx, linux-x25@xxxxxxxxxxxxxxx
From: Christoph Hellwig <hch@xxxxxx>
Date: Wed, 22 Jul 2020 09:56:57 +0200
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.

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