Re: [PATCH 14/14] mm,migration: Allow the migration of PageSwapCache pages

On Thu, Apr 1, 2010 at 8:57 AM, KAMEZAWA Hiroyuki
<kamezawa.hiroyu <at> jp.fujitsu.com>
>
> rmap_walk_anon() is called against unmapped pages.
> Then, !page_mapped() is always true. So, the behavior will not be different from
> the last one.
>

rmap_walk_anon can be also called in case of failing try_to_unmap.
Then, In unmap_and_move, page_mapped is true and
remove_migration_ptes can be called.

But I am not sure this Mel's patch about this part is really needed.

> Thanks,
> -Kame
>
>

--

-- 
Kind regards,
Minchan Kim

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