From: Dave McCracken <dmccr@us.ibm.com>
To: Hugh Dickins <hugh@veritas.com>, Andrew Morton <akpm@digeo.com>
Cc: Ingo Molnar <mingo@elte.hu>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] nonlinear oddities
Date: Thu, 06 Mar 2003 13:38:07 -0600 [thread overview]
Message-ID: <57080000.1046979487@baldur.austin.ibm.com> (raw)
In-Reply-To: <Pine.LNX.4.44.0303061903170.1215-100000@localhost.localdomain>
--On Thursday, March 06, 2003 19:14:47 +0000 Hugh Dickins
<hugh@veritas.com> wrote:
> Now I think about it more, install_page's SetPageAnon is not good at all.
> That (unlocked) page may already be mapped into other vmas as a shared
> file page, non-zero mapcount, we can't suddenly switch it to Anon
> (pte_chained) without doing the work to handle that case.
Ouch. You're right. I'll go stare at it for awhile and see if any
solutions jump out at me. I suppose at worst I could write a function to
convert an object page to use pte_chains, but it'd be nice if that weren't
necessary.
Dave McCracken
======================================================================
Dave McCracken IBM Linux Base Kernel Team 1-512-838-3059
dmccr@us.ibm.com T/L 678-3059
next prev parent reply other threads:[~2003-03-06 19:27 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-03-06 16:53 Hugh Dickins
2003-03-06 19:14 ` Hugh Dickins
2003-03-06 19:38 ` Dave McCracken [this message]
[not found] <fa.o2ppdof.u56795@ifi.uio.no>
[not found] ` <fa.k4ichtj.1rh0gp5@ifi.uio.no>
2003-03-09 1:37 ` Ed Tomlinson
2003-03-10 12:07 ` Hugh Dickins
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