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Date:   Fri, 24 Apr 2020 08:43:33 +0200
From:   Christoph Hellwig <hch@....de>
To:     Kees Cook <keescook@...omium.org>,
        Iurii Zaikin <yzaikin@...gle.com>
Cc:     Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        linux-fsdevel@...r.kernel.org, netdev@...r.kernel.org,
        bpf@...r.kernel.org
Subject: pass kernel pointers to the sysctl ->proc_handler method v3

Hi all,

this series changes the sysctl ->proc_handler methods to take kernel
pointers.  This simplifies some of the pointer handling in the methods
(which could probably be further simplified now), and gets rid of the
set_fs address space overrides used by bpf.

Changes since v2:
 - free the buffer modified by BPF
 - move pid_max and friends to pid.h

Changes since v1:
 - drop a patch merged by Greg
 - don't copy data out on a write
 - fix buffer allocation in bpf

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