Re: [PATCH nvme] nvme: Revert "nvme: Discard workaround for non-conformant devices"

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On Wednesday, June 06/03/20, 2020 at 14:20:01 -0700, Sagi Grimberg wrote:
> 
> > > > Err, why?  Please send an actual bug report with details of your
> > > > setup.
> > > 
> > > Hi Christoph,
> > > 
> > > Here is the link describing the issue initially reported for upstream
> > > kernel 5.5:
> > > 
> > > https://lore.kernel.org/linux-nvme/CH2PR12MB40053A64681EFA3E6F63FDFBDD2A0@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/
> > > 
> > > Issue is later fixed with upstream commit b716e688.
> > 
> > We are talking about two different things here.  One is the Linux NVMe
> > host code that can be used with lots of different controllers.  Many of
> > them are PCIe controller, especially cheap ones.
> > 
> > The other is the Linux NVMe target code.  So if a fix for very common
> > PCIe controller trigger a bug in the target code there is no 1:1
> > relationship as even if you are talking to a Linux fabrics controller
> > it usually runs a different kernel version on a different system.
> > 
> > That being said you can always backport that fix as well, which probably
> > is a good idea as it fixes a real bug.
> > 
> > Nevermind that nothing in your revert patch indicated it wasn't for
> > mainline.
> 
> Agree..

Just to confirm that I got it right, Do you want me to send all 6 patches 
(fix and dependent patches) to stable?



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