linux-kernel - Re: [v6 04/15] mm: discard memblock data later

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Message-ID: <20170814134243.GM19063@dhcp22.suse.cz>
Date:   Mon, 14 Aug 2017 15:42:43 +0200
From:   Michal Hocko <mhocko@...nel.org>
To:     Pasha Tatashin <pasha.tatashin@...cle.com>
Cc:     linux-kernel@...r.kernel.org, sparclinux@...r.kernel.org,
        linux-mm@...ck.org, linuxppc-dev@...ts.ozlabs.org,
        linux-s390@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        x86@...nel.org, kasan-dev@...glegroups.com, borntraeger@...ibm.com,
        heiko.carstens@...ibm.com, davem@...emloft.net,
        willy@...radead.org, ard.biesheuvel@...aro.org,
        will.deacon@....com, catalin.marinas@....com, sam@...nborg.org,
        Mel Gorman <mgorman@...e.de>
Subject: Re: [v6 04/15] mm: discard memblock data later

On Mon 14-08-17 09:39:17, Pasha Tatashin wrote:
> >>#ifdef CONFIG_MEMBLOCK in page_alloc, or define memblock_discard() stubs in
> >>nobootmem headfile.
> >
> >This is the standard way to do this. And it is usually preferred to
> >proliferate ifdefs in the code.
> 
> Hi Michal,
> 
> As you suggested, I sent-out this patch separately. If you feel strongly,
> that this should be updated to have stubs for platforms that do not
> implement memblock, please send a reply to that e-mail, so those who do not
> follow this tread will see it. Otherwise, I can leave it as is, page_alloc
> file already has a number memblock related ifdefs all of which can be
> cleaned out once every platform implements it (is it even achievable?)

I do not think this needs a repost just for this. This was merely a
JFYI, in case you would need to repost for other reasons then just
update that as well. But nothing really earth shattering.
-- 
Michal Hocko
SUSE Labs