Re: The IBM order relaxation patch

From: David S. Miller (davem@redhat.com)
Date: Thu Feb 07 2002 - 07:29:03 EST


   From: Rik van Riel <riel@conectiva.com.br>
   Date: Thu, 7 Feb 2002 10:16:22 -0200 (BRST)

   The only problem is that it doesn't. It won't try to free
   pages once you have enough free pages, which means you'll
   just end up in a livelock.

It always calls balance_classzone which always calls try_to_free_pages
which always will try to free SWAP_CLUSTER_MAX pages.

Oh, I see, is it that the old and RMAP VM won't do that? :-)

BTW, in checking this out it seems current->allocation_order is only
set and never checked anywhere.
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