From mboxrd@z Thu Jan  1 00:00:00 1970
From: Christoph Lameter <clameter@sgi.com>
Subject: Re: migratepage failures on reiserfs
Date: Mon, 5 Nov 2007 14:46:45 -0800 (PST)
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Cc: Badari Pulavarty <pbadari@us.ibm.com>,
	Chris Mason <chris.mason@oracle.com>,
	reiserfs-devel@vger.kernel.org, linux-mm <linux-mm@kvack.org>,
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To: Mel Gorman <mel@skynet.ie>
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On Mon, 5 Nov 2007, Mel Gorman wrote:

> The grow_dev_page() pages should be reclaimable even though migration
> is not supported for those pages? They were marked movable as it was
> useful for lumpy reclaim taking back pages for hugepage allocations and
> the like. Would it make sense for memory unremove to attempt migration
> first and reclaim second?

Note that a page is still movable even if there is no file system method 
for migration available. In that case the page needs to be cleaned before 
it can be moved.