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

[Jamie Lokier]

Berkhan, Enrik (GE Infra, Oil & Gas) wrote:
> Andrew Morton wrote:
> > On Wed, 11 Mar 2009 15:30:35 +0000
> > David Howells <dhowells@xxxxxxxxxx> wrote:
> >> From: Enrik Berkhan <Enrik.Berkhan@xxxxxx>
> >> 
> >> The solution is to mark the pages dirty at the point of allocation by
> >> the truncation code.
> > 
> > Was there a specific reason for using the low-level SetPageDirty()?
> 
> No, no specific reason. It was just my first try of a fix after spotting 
> the problem. After a short discussion with David, we decided to wait for 
> others' comments on using the low-/high-level approach.

Tangentially related...

Does the vm pageout logic include or skip these "dirty" pages looking
for candidates to flush to storage?  What about with MMU?

-- Jamie
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