From: Nick Piggin <nickpiggin@yahoo.com.au>
To: Hugh Dickins <hugh@veritas.com>
Cc: Robin Holt <holt@sgi.com>, Ingo Molnar <mingo@elte.hu>,
Christoph Lameter <clameter@sgi.com>,
Jack Steiner <steiner@sgi.com>,
linux-mm@kvack.org
Subject: Re: Can get_user_pages( ,write=1, force=1, ) result in a read-only pte and _count=2?
Date: Thu, 19 Jun 2008 22:21:33 +1000 [thread overview]
Message-ID: <200806192221.34103.nickpiggin@yahoo.com.au> (raw)
In-Reply-To: <200806192207.40838.nickpiggin@yahoo.com.au>
On Thursday 19 June 2008 22:07, Nick Piggin wrote:
> On Thursday 19 June 2008 21:39, Hugh Dickins wrote:
> > I probably won't get back to this today. And there are also good
> > reasons in -mm for me to check back on all these swapcount issues.
>
> I don't see how you can get an accurate page_swapcount without
> the page lock. Anyway, if you volunteer to take a look at the
> problem, great. I expect Robin could just as well fix it for
> their code in the meantime by using force=0...
You could always use another page flag, of course ;)
Or get rid of Linus pages
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next prev parent reply other threads:[~2008-06-19 12:21 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-18 16:41 Robin Holt
2008-06-18 17:29 ` Nick Piggin
2008-06-18 19:01 ` Hugh Dickins
2008-06-18 20:33 ` Robin Holt
2008-06-18 21:46 ` Hugh Dickins
2008-06-19 3:31 ` Nick Piggin
2008-06-19 3:34 ` Nick Piggin
2008-06-19 11:39 ` Hugh Dickins
2008-06-19 12:07 ` Nick Piggin
2008-06-19 12:21 ` Nick Piggin [this message]
2008-06-19 17:48 ` Christoph Lameter
2008-06-19 12:34 ` Hugh Dickins
2008-06-19 12:53 ` Nick Piggin
2008-06-19 13:25 ` Hugh Dickins
2008-06-19 13:35 ` Robin Holt
2008-06-19 16:32 ` Robin Holt
2008-06-20 9:23 ` Nick Piggin
2008-06-19 3:07 ` Nick Piggin
2008-06-19 11:09 ` Hugh Dickins
2008-06-19 13:38 ` Robin Holt
2008-06-19 13:49 ` Hugh Dickins
2008-06-23 15:54 ` Robin Holt
2008-06-23 16:48 ` Hugh Dickins
2008-06-23 17:52 ` Robin Holt
2008-06-23 20:58 ` Hugh Dickins
2008-06-24 11:56 ` Robin Holt
2008-06-24 15:19 ` Robin Holt
2008-06-24 20:19 ` Hugh Dickins
2008-06-23 19:11 ` Robin Holt
2008-06-23 19:12 ` Robin Holt
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