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SubjectRe: [PATCH] Fix bad data from non-direct-io read after direct-io write


On Fri, 26 Oct 2007, Zach Brown wrote:
>
> I can throw together a patch if you haven't already committed one by the
> time you read this ;).

I'm not touching that code except to send out possible patches for others
to test and comment on. I have no test-cases, nor any real interest in it.
So yeah, please send me a tested and thought-through patch.

It sounded like Karl actually had a test-case to trigger this, but maybe
I'm confused (and it sounds a bit unlikely, since it should be hard to
trigger.. Although maybe you can trigger it by doing a direct_IO write
with the *source* being an mmap() of the file you're writing to, and
depending on the write itself re-populating the destination in the page
cache?)

Karl?

Linus
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