Re: [patch] fs: improved handling of page and buffer IO errors

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On Tue, 21 Oct 2008, steve@xxxxxxxxxxx
> > Is there a case where retrying in case of !PageUptodate() makes any
> > sense?
> >
> Yes... cluster filesystems. Its very important in case a readpage
> races with a lock demotion. Since the introduction of page_mkwrite
> that hasn't worked quite right, but by retrying when the page is
> not uptodate, that should fix the problem,

I see.

Could you please give some more details?  In particular I don't know
what's lock demotion in this context.  And how page_mkwrite() come
into the picture?

Thanks,
Miklos
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