nvmet panics during high load

[Christoph Hellwig]

On Sun, Aug 13, 2017 at 05:01:52PM +0300, Sagi Grimberg wrote:
> 
> > Sorry for the lack of response. I havn't tested the patch.
> > I intended to look into the issue further and suggest a simpler
> > solution that simply calculates the maximum queue size correctly but
> > simply didn't have the time.
> 
> AFAICT there is no maximum calculation, it depends on the congestion
> that the target may experience..

So how about providing a few more receive than send buffer by default
(less than now) and dynamically allocating over the threshold?