Re: [PATCH] undo the brd.c part oframfs-and-ram-disk-pages-are-unevictable.patch

[Rik van Riel]

On Thu, 12 Jun 2008 15:00:57 -0400
Lee Schermerhorn <Lee.Schermerhorn@xxxxxx> wrote:

> On Thu, 2008-06-12 at 13:53 -0400, Rik van Riel wrote:
> > Undo the brd.c part of ramfs-and-ram-disk-pages-are-unevictable.patch.
> > The brd pages do not live on the LRU at all, so there is no need to
> > play these tricks.
> 
> Does this mean that these pages cannot be migrated?  E.g., to evacuate
> memory for hotplug?  Looks like all paths to migrate_pages() construct a
> list of pages to migrate by isolating them from the lru
> [isolate_lru_page()].  Any pages not found in the lru are skipped.

It looks like that, indeed.

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