linux-kernel - Re: [PATCH 12/16] mm: consolidate the get_user

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Message-ID: <20190606062018.GA26745@lst.de>
Date:   Thu, 6 Jun 2019 08:20:18 +0200
From:   Christoph Hellwig <hch@....de>
To:     John Hubbard <jhubbard@...dia.com>
Cc:     Christoph Hellwig <hch@....de>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Paul Burton <paul.burton@...s.com>,
        James Hogan <jhogan@...nel.org>,
        Yoshinori Sato <ysato@...rs.sourceforge.jp>,
        Rich Felker <dalias@...c.org>,
        "David S. Miller" <davem@...emloft.net>,
        Nicholas Piggin <npiggin@...il.com>,
        Khalid Aziz <khalid.aziz@...cle.com>,
        Andrey Konovalov <andreyknvl@...gle.com>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        linux-mips@...r.kernel.org, linux-sh@...r.kernel.org,
        sparclinux@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        linux-mm@...ck.org, x86@...nel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 12/16] mm: consolidate the get_user_pages*
 implementations

On Wed, Jun 05, 2019 at 11:01:17PM -0700, John Hubbard wrote:
> I started reviewing this one patch, and it's kind of messy figuring out 
> if the code motion preserves everything because of
> all the consolidation from other places, plus having to move things in
> and out of the ifdef blocks.  So I figured I'd check and see if this is
> going to make it past RFC status soon, and if it's going before or after
> Ira's recent RFC ("RDMA/FS DAX truncate proposal").

I don't like the huge moves either, but I can't really think of any
better way to do it.  Proposals welcome, though.