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Date: Thu, 13 Apr 2006 18:17:16 -0700
From: Andrew Morton <akpm@osdl.org>
To: clameter@sgi.com, hugh@veritas.com, linux-kernel@vger.kernel.org,
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Subject: Re: [PATCH 2/5] Swapless V2: Add migration swap entries
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Andrew Morton <akpm@osdl.org> wrote:
>
> Perhaps it would be better to go to
>  sleep on some global queue, poke that queue each time a page migration
>  completes?

Or take mmap_sem for writing in do_migrate_pages()?  That takes the whole
pagefault path out of the picture.