linux-kernel - Re: mmotm 2010-12-16-14-56 uploaded (hugetlb)

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Message-ID: <20101217233740.GR1671@random.random>
Date:	Sat, 18 Dec 2010 00:37:40 +0100
From:	Andrea Arcangeli <aarcange@...hat.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Randy Dunlap <randy.dunlap@...cle.com>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	linux-fsdevel@...r.kernel.org
Subject: Re: mmotm 2010-12-16-14-56 uploaded (hugetlb)

Hello,

On Fri, Dec 17, 2010 at 02:53:34PM -0800, Andrew Morton wrote:
> afacit, CONFIG_HUGETLBFS must be enabled if CONFIG_HUGETLB_PAGE=y, and
> thp-config_transparent_hugepage.patch broke that, by permitting
> CONFIG_HUGETLBFS=n, CONFIG_HUGETLB_PAGE=y,
> CONFIG_TRANSPARENT_HUGEPAGE=y.

CONFIG_HUGETLBFS and CONFIG_HUGETLB_PAGE existed before, and
HUGETLBFS=n && HUGETLB_PAGE=y used to build just fine, I clearly
didn't try a build with HUGETLBFS=n recently.

> There's lots of stuff in hugetlb.h which is clearly related to
> hugetlbfs, but is enabled by CONFIG_HUGETLB_PAGE, so those things seem
> to be pretty joined at the hip nowadays.

Yes, it used to build just fine but I guess after the last hugetlbfs
updates I'm getting flood of errors no matter how I adjust things.
hugetlbfs code who needs some fixup here.
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