linux-kernel - Re: [patch 0/3] 2.6.20 fix for PageUptodate memorder problem (try 2)

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Message-Id: <1170985449.2620.391.camel@localhost.localdomain>
Date:	Fri, 09 Feb 2007 12:44:09 +1100
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	Nick Piggin <npiggin@...e.de>
Cc:	Hugh Dickins <hugh@...itas.com>, Andrew Morton <akpm@...l.org>,
	Linux Memory Management <linux-mm@...ck.org>,
	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: [patch 0/3] 2.6.20 fix for PageUptodate memorder problem (try
	2)


> > Fix threaded user page write memory ordering
> 
> Thanks, I did see that, but I'm sure it must have been prompted by a
> discussion or another proposed patch from IBM. Maybe I'm wrong
> though.

Yes, my initial proposal iirc was to smp_wmb() in set_pte() but after a
discussion with Linus, we ended with open coding them.

Ben.


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