linux-kernel - Re: inux-next: Tree for Apr 27 (uml + mm/memcontrol.c)

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Date:	Fri, 27 Apr 2012 16:24:59 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	David Rientjes <rientjes@...gle.com>
Cc:	Randy Dunlap <rdunlap@...otime.net>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	Richard Weinberger <richard@....at>,
	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Subject: Re: inux-next: Tree for Apr 27 (uml + mm/memcontrol.c)

On Fri, 27 Apr 2012 16:14:52 -0700 (PDT)
David Rientjes <rientjes@...gle.com> wrote:

> > Minor matter: that's non-responsive to my suggestion.
> > 
> 
> If it's moved to a new cgroup then we can just go back to the original 
> point that I made as was trying to avoid: adding #ifdefs all over 
> mm/memcontrol.c in a dozen or so places.  A mm/hugetlbcg.c would only be 
> built, natually, when we have "depends on HUGETLB_PAGE" and 
> linux/hugetlb.h takes care of the rest (setting HUGE_MAX_HSTATE for archs 
> that don't define it themselves, in other words only one hugepage size).

And if it isn't moved to a new cgroup then your
memcg-add-hugetlb-extension-fix.patch is suboptimal.  Why is this so
hard?
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