Re: [PATCH 10/63] mm: Do not flush TLB during protection change if!pte_present && !migration_entry

[Rik van Riel]

On 10/07/2013 06:28 AM, Mel Gorman wrote:
> NUMA PTE scanning is expensive both in terms of the scanning itself and
> the TLB flush if there are any updates. Currently non-present PTEs are
> accounted for as an update and incurring a TLB flush where it is only
> necessary for anonymous migration entries. This patch addresses the
> problem and should reduce TLB flushes.
> 
> Signed-off-by: Mel Gorman <mgorman@xxxxxxx>

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

-- 
All rights reversed
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/