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From: Andrew Morton <akpm@osdl.org>
To: Hugh Dickins <hugh@veritas.com>
Cc: torvalds@osdl.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] mm: poison struct page for ptlock
Date: Sun, 6 Nov 2005 16:00:08 -0800	[thread overview]
Message-ID: <20051106160008.28822bbd.akpm@osdl.org> (raw)
In-Reply-To: <Pine.LNX.4.61.0511062348240.29944@goblin.wat.veritas.com>

Hugh Dickins <hugh@veritas.com> wrote:
>
> Suppress split ptlock on arches which may use one page for multiple page
>  tables.  Reconsider what better to do (particularly on ppc64) later on.

But why is that a problem per-se?  A few "pagetable pages" will share the
same lock.  Deadlocky when we take two pagetable locks?

The code ran OK on ppc64, fwiw.


  reply	other threads:[~2005-11-07  0:00 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-11-03 19:26 Hugh Dickins
2005-11-05  5:32 ` Andrew Morton
2005-11-05  6:40   ` Hugh Dickins
2005-11-05  7:17     ` Andrew Morton
2005-11-06 19:28 ` Andrew Morton
2005-11-06 17:59   ` Anton Blanchard
2005-11-06 19:34   ` Olof Johansson
2005-11-06 22:39   ` Paul Mackerras
2005-11-06 22:57   ` Andrew Morton
2005-11-06 22:58   ` Hugh Dickins
2005-11-06 23:13     ` Andrew Morton
2005-11-06 23:36       ` David S. Miller
2005-11-06 23:48       ` Hugh Dickins
2005-11-07  0:00         ` Andrew Morton [this message]
2005-11-07  0:15           ` Hugh Dickins

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