Re: [PATCH] NOMMU: Pages allocated to a ramfs inode's pagecache may get wrongly discarded

[Johannes Weiner]

On Fri, Mar 13, 2009 at 11:53:02AM +0000, David Howells wrote:
> KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx> wrote:
> 
> > David, Could you please try following patch if you have NOMMU machine?
> > it is straightforward porting to nommu.
> 
> Is this patch actually sufficient, though?  Surely it requires an alteration
> to ramfs to mark the page as being unevictable?

ramfs already marks the whole address space of each inode as
unevictable, see ramfs_get_inode().

The reclaim code will regard this when the config option is enabled.

	Hannes
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