Re: [PATCH] mm: numa: Guarantee that tlb_flush_pending updates arevisible before page table updates

From: Rik van Riel
Date: Wed Dec 11 2013 - 10:22:08 EST


On Wed, 11 Dec 2013 13:21:09 +0000
Mel Gorman <mgorman@xxxxxxx> 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@xxxxxxxxxxxxxxx
> Signed-off-by: Mel Gorman <mgorman@xxxxxxx>

Reviewed-by: Rik van Riel <riel@xxxxxxxxxx>

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