Re: [PATCH v7.1] block: Coordinate flush requests

[Darrick J. Wong]

On Thu, Jan 20, 2011 at 08:13:41PM +0100, Tejun Heo wrote:
> On Thu, Jan 20, 2011 at 07:50:57PM +0100, Tejun Heo wrote:
> > Hello,
> > 
> > On Tue, Jan 18, 2011 at 09:12:55AM +0800, Shaohua Li wrote:
> > > This makes sense. would it possible N flush data payloads delay the
> > > first request?
> > 
> > I ended up with a different design.  Still buggy.  It triggers a weird
> > oops under stress test but other than that things generally seem to
> > work as expected.  Please read the comment at the top of blk-flush.c
> > for more info.  I'll post properly after more testing and debugging.
> 
> The oops was caused by debugging code I put in (not posted together).
> It runs fine without it, so if you have some time, please give it a
> spin.

Seems to run without incident on my storage test arrays.  The fsync-happy
performance numbers are comparable to previous iterations of flush patches.
Looks good, thank you!

--D
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