linux-kernel - Re: pud_bad vs pud

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Message-ID: <Pine.LNX.4.64.0902052013230.12955@blonde.anvils>
Date:	Thu, 5 Feb 2009 20:14:42 +0000 (GMT)
From:	Hugh Dickins <hugh@...itas.com>
To:	wli@...ementarian.org
cc:	Ingo Molnar <mingo@...e.hu>, Jeremy Fitzhardinge <jeremy@...p.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linux Memory Management List <linux-mm@...ck.org>
Subject: Re: pud_bad vs pud_bad

On Thu, 5 Feb 2009, wli@...ementarian.org wrote:
> 
> The RW bit needs to be allowed to become read-only for hugetlb COW.
> Changing it over to the 32-bit method is a bugfix by that token.

If there's a bugfix to be made there, of course I'm in favour:
but how come we've never seen such a bug?  hugetlb COW has been
around for a year or two by now, hasn't it?

Hugh
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