linux-kernel - Re: [PATCH] mm: numa: Guarantee that tlb_flush_pending updates are visible before page table updates

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Message-ID: <20131211102126.532c763d@annuminas.surriel.com>
Date:	Wed, 11 Dec 2013 10:21:26 -0500
From:	Rik van Riel <riel@...hat.com>
To:	Mel Gorman <mgorman@...e.de>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Alex Thorlton <athorlton@....com>,
	Linux-MM <linux-mm@...ck.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] mm: numa: Guarantee that tlb_flush_pending updates are
 visible before page table updates

On Wed, 11 Dec 2013 13:21:09 +0000
Mel Gorman <mgorman@...e.de> wrote:

> According to documentation on barriers, stores issued before a LOCK can
> complete after the lock implying that it's possible tlb_flush_pending can
> be visible after a page table update. As per revised documentation, this patch
> adds a smp_mb__before_spinlock to guarantee the correct ordering.

And now you have 18 patches :)
 
> Cc: stable@...r.kernel.org
> Signed-off-by: Mel Gorman <mgorman@...e.de>

Reviewed-by: Rik van Riel <riel@...hat.com>
 
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