[Drbd-dev] FLUSH/FUA documentation & code discrepancy

[Tejun Heo]

On Wed, Sep 05, 2012 at 10:44:55AM +0200, Philipp Reisner wrote:
> > Currently, FLUSH/FUA doesn't enforce any ordering requirement.  File
> > systems are responsible for draining all writes which have to happen
> > before and not issue further writes which should come after.
> 
> Ok. That is a clear statement. So we will do it that way.
> 
> The "Currently" in you statement, suggests that there might be something
> more mighty in the future. Is that true?

Heh, I was more thinking about the past.  We used to have barrier
support with much stricter ordering.  I don't think we're gonna change
the ordering requirement in any foreseeable future.

Thanks.

-- 
tejun