linux-kernel - Re: [PATCH 07/11] Memory compaction core

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Date:	Tue, 23 Mar 2010 18:15:40 +0000
From:	Mel Gorman <mel@....ul.ie>
To:	Christoph Lameter <cl@...ux-foundation.org>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Adam Litke <agl@...ibm.com>, Avi Kivity <avi@...hat.com>,
	David Rientjes <rientjes@...gle.com>,
	Minchan Kim <minchan.kim@...il.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Rik van Riel <riel@...hat.com>, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org
Subject: Re: [PATCH 07/11] Memory compaction core

On Tue, Mar 23, 2010 at 12:56:30PM -0500, Christoph Lameter wrote:
> On Tue, 23 Mar 2010, Mel Gorman wrote:
> 
> > diff --git a/include/linux/swap.h b/include/linux/swap.h
> > index 1f59d93..cf8bba7 100644
> > --- a/include/linux/swap.h
> > +++ b/include/linux/swap.h
> > @@ -238,6 +239,11 @@ static inline void lru_cache_add_active_file(struct page *page)
> >  	__lru_cache_add(page, LRU_ACTIVE_FILE);
> >  }
> >
> > +/* LRU Isolation modes. */
> > +#define ISOLATE_INACTIVE 0	/* Isolate inactive pages. */
> > +#define ISOLATE_ACTIVE 1	/* Isolate active pages. */
> > +#define ISOLATE_BOTH 2		/* Isolate both active and inactive pages. */
> > +
> >  /* linux/mm/vmscan.c */
> >  extern unsigned long try_to_free_pages(struct zonelist *zonelist, int order,
> >  					gfp_t gfp_mask, nodemask_t *mask);
> > diff --git a/mm/vmscan.c b/mm/vmscan.c
> > index 79c8098..ef89600 100644
> > --- a/mm/vmscan.c
> > +++ b/mm/vmscan.c
> > @@ -839,11 +839,6 @@ keep:
> >  	return nr_reclaimed;
> >  }
> >
> > -/* LRU Isolation modes. */
> > -#define ISOLATE_INACTIVE 0	/* Isolate inactive pages. */
> > -#define ISOLATE_ACTIVE 1	/* Isolate active pages. */
> > -#define ISOLATE_BOTH 2		/* Isolate both active and inactive pages. */
> > -
> >  /*
> >   * Attempt to remove the specified page from its LRU.  Only take this page
> >   * if it is of the appropriate PageActive status.  Pages which are being
> 
> Put the above in a separate patch?
> 

I can if you prefer but it's so small, I didn't think it obscured the
clarity of the patch anyway. I would have somewhat expected the two
patches to be merged together before going upstream.

-- 
Mel Gorman
Part-time Phd Student                          Linux Technology Center
University of Limerick                         IBM Dublin Software Lab
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