linux-kernel - Re: known bad patch in -mm tree was Re: [PATCH 2/2] mmap.2: MAP

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Date:   Thu, 21 Dec 2017 16:08:40 +0100
From:   Michal Hocko <mhocko@...nel.org>
To:     Pavel Machek <pavel@....cz>
Cc:     Michael Ellerman <mpe@...erman.id.au>, vojtech@...e.cz,
        jikos@...e.cz, Kees Cook <keescook@...omium.org>,
        "Michael Kerrisk (man-pages)" <mtk.manpages@...il.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Cyril Hrubis <chrubis@...e.cz>,
        Linux API <linux-api@...r.kernel.org>,
        Khalid Aziz <khalid.aziz@...cle.com>,
        Russell King - ARM Linux <linux@...linux.org.uk>,
        Andrea Arcangeli <aarcange@...hat.com>,
        Linux-MM <linux-mm@...ck.org>,
        LKML <linux-kernel@...r.kernel.org>,
        linux-arch <linux-arch@...r.kernel.org>,
        Florian Weimer <fweimer@...hat.com>,
        John Hubbard <jhubbard@...dia.com>,
        Matthew Wilcox <willy@...radead.org>,
        Jann Horn <jannh@...gle.com>,
        Mike Rapoport <rppt@...ux.vnet.ibm.com>
Subject: Re: known bad patch in -mm tree was Re: [PATCH 2/2] mmap.2:
 MAP_FIXED updated documentation

On Thu 21-12-17 15:59:07, Pavel Machek wrote:
> Hi!
> 
> > >>> And if Michal doesn't want to touch this patch any more, I'm happy to
> > >>> do the search/replace/resend. :P
> > >>
> > >> Something with the prefix MAP_FIXED_ seems to me obviously desirable,
> > >> both to suggest that the function is similar, and also for easy
> > >> grepping of the source code to look for instances of both.
> > >> MAP_FIXED_SAFE didn't really bother me as a name, but
> > >> MAP_FIXED_NOREPLACE (or MAP_FIXED_NOCLOBBER) seem slightly more
> > >> descriptive of what the flag actually does, so a little better.
> > >
> > > Great, thanks!
> > >
> > > Andrew, can you s/MAP_FIXED_SAFE/MAP_FIXED_NOREPLACE/g in the series?
> > 
> > This seems to have not happened. Presumably Andrew just missed the mail
> > in the flood. And will probably miss this one too ... :)
> 
> Nice way to mess up kernel development, Michal. Thank you! :-(.

Thank you for your valuable feedback! Maybe you have noticed that I
haven't enforced the patch and led others to decide the final name
(either by resubmitting patches or a simple replace in mmotm tree). Or
maybe you haven't because you are so busy bikesheding that you can
hardly see anything else.
 
> Andrew, everyone and their dog agrees MAP_FIXED_SAFE is stupid name,
> but Michal decided to just go ahead, ignoring feedback...
>
> Can you either s/MAP_FIXED_SAFE/MAP_FIXED_NOREPLACE/g or drop the patches?

You have surely saved the world today and I hardly find words to thank
you (and your dog of course).

Thanks!
-- 
Michal Hocko
SUSE Labs