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SubjectRe: [PATCH/RFC] pass dio_complete proper offset from finished_one_bio
Eric Sandeen wrote:
> We saw problems w/ xfs doing AIO+DIO into a sparse file.
> It seemed that xfs was doing "extent conversion" at the wrong offsets, so
> written regions came up as unwritten (zeros) and stale data was exposed
> in the region after the write. Thanks to Peter Backes for the very
> nice testcase.
> This also broke xen with blktap over xfs.

Hrmph. Zach's changes in -mm magically made this go away... I was about
to submit a proper patch against -mm but it seem to be not needed.

So, now digging around to see why that is, and what exactly "fixed" things.


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