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SubjectRe: bug in md write barrier support?
On Friday September 3, hch@lst.de wrote:
> md_flush_mddev just passes on the sector relative to the raid device,
> shouldn't it be translated somewhere?

Yes. md_flush_mddev should simply be removed.
The functionality should be, and largely is, in the individual
personalities.

Is there documentation somewhere on exactly what an issue_flush_fn
should do (is it allowed to sleep? what must happen before it is
allowed to return, what is the "error_sector" for, that sort of thing).

I suspect that at least raid5 will need some fairly special handling.

NeilBrown
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