linux-kernel - Re: Weirdness in __alloc_bootmem_node

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Message-ID: <20120419125032.GB15634@tiehlicka.suse.cz>
Date:	Thu, 19 Apr 2012 14:50:33 +0200
From:	Michal Hocko <mhocko@...e.cz>
To:	Yinghai Lu <yinghai@...nel.org>
Cc:	linux-mm@...ck.org, LKML <linux-kernel@...r.kernel.org>
Subject: Re: Weirdness in __alloc_bootmem_node_high

On Tue 17-04-12 11:07:10, Yinghai Lu wrote:
> On Tue, Apr 17, 2012 at 10:32 AM, Michal Hocko <mhocko@...e.cz> wrote:
> > On Tue 17-04-12 10:12:30, Yinghai Lu wrote:
> >>
> >> We are not using bootmem with x86 now, so could remove those workaround now.
> >
> > Could you be more specific about what the workaround is used for?
> 
> Don't bootmem allocating too low to use up all low memory. like for
> system with lots of memory for sparse vmemmap.

OK I see. Thanks for clarification.
I guess it doesn't make much sense to fix this particular thing now and
rather let it to a bigger clean up. If people think otherwise I can send
a patch though.


> 
> when nobootmem.c is used, __alloc_bootmem_node_high is the same as
> __alloc_bootmem_node.
> 
> Thanks
> 
> Yinghai
> 
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-- 
Michal Hocko
SUSE Labs
SUSE LINUX s.r.o.
Lihovarska 1060/12
190 00 Praha 9    
Czech Republic
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