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SubjectRe: [PATCH 10/13: eCryptfs] Mmap operations
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On Thu, 2006-05-04 at 22:43 +0100, David Howells wrote:
> > When writing CacheFiles, I noticed that ext3 would occasionally unlock a page
> > that had neither PG_uptodate nor PG_error set, and so I had to force another
> > readpage() on it.

On Fri, 2006-05-05 at 10:22 -0500, Dave Kleikamp wrote:
> I understand this comes from the FiST package. In that code, there is a
> comment in one of these functions explaining the second read. It would
> be nice to have that comment in here too:
>
> /*
> * call readpage() again if we returned from wait_on_page with a
> * page that's not up-to-date; that can happen when a partial
> * page has a few buffers which are ok, but not the whole
> * page.
> */
>
> I'm a bit surprised that this could happen.

Me too. How do we know we don't end up the same way for the second read?

Pekka

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