netdev - RE: get rid of the address_space override in setsockopt

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Message-ID: <60c52e31e9f240718fcda0dd5c2faeca@AcuMS.aculab.com>
Date:   Tue, 21 Jul 2020 09:38:23 +0000
From:   David Laight <David.Laight@...LAB.COM>
To:     'Christoph Hellwig' <hch@....de>,
        "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>
CC:     "linux-crypto@...r.kernel.org" <linux-crypto@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "bpf@...r.kernel.org" <bpf@...r.kernel.org>,
        "netfilter-devel@...r.kernel.org" <netfilter-devel@...r.kernel.org>,
        "coreteam@...filter.org" <coreteam@...filter.org>,
        "linux-sctp@...r.kernel.org" <linux-sctp@...r.kernel.org>,
        "linux-hams@...r.kernel.org" <linux-hams@...r.kernel.org>,
        "linux-bluetooth@...r.kernel.org" <linux-bluetooth@...r.kernel.org>,
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        <bridge@...ts.linux-foundation.org>,
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        "dccp@...r.kernel.org" <dccp@...r.kernel.org>,
        "linux-decnet-user@...ts.sourceforge.net" 
        <linux-decnet-user@...ts.sourceforge.net>,
        "linux-wpan@...r.kernel.org" <linux-wpan@...r.kernel.org>,
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        "tipc-discussion@...ts.sourceforge.net" 
        <tipc-discussion@...ts.sourceforge.net>,
        "linux-x25@...r.kernel.org" <linux-x25@...r.kernel.org>
Subject: RE: get rid of the address_space override in setsockopt

From: Christoph Hellwig
> Sent: 20 July 2020 13:47
>
> setsockopt is the last place in architecture-independ code that still
> uses set_fs to force the uaccess routines to operate on kernel pointers.
> 
> This series adds a new sockptr_t type that can contained either a kernel
> or user pointer, and which has accessors that do the right thing, and
> then uses it for setsockopt, starting by refactoring some low-level
> helpers and moving them over to it before finally doing the main
> setsockopt method.

Are you planning to make the equivalent change to getsockopt()?
Having mismatched interfaces would be very strange.

	David

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