Re: [patch 1/4] mm: vmscan: remove remains of kswapd-managed zone->all_unreclaimable

[Mel Gorman]

On Fri, Jun 20, 2014 at 12:33:47PM -0400, Johannes Weiner wrote:
> shrink_zones() has a special branch to skip the all_unreclaimable()
> check during hibernation, because a frozen kswapd can't mark a zone
> unreclaimable.
> 
> But ever since 6e543d5780e3 ("mm: vmscan: fix do_try_to_free_pages()
> livelock"), determining a zone to be unreclaimable is done by directly
> looking at its scan history and no longer relies on kswapd setting the
> per-zone flag.
> 
> Remove this branch and let shrink_zones() check the reclaimability of
> the target zones regardless of hibernation state.
> 
> Signed-off-by: Johannes Weiner <hannes@xxxxxxxxxxx>

Acked-by: Mel Gorman <mgorman@xxxxxxx>

-- 
Mel Gorman
SUSE Labs
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