Re: [PATCH] block: fix q->flush_rq NULL pointer crash on dm-mpath flush

[Jens Axboe]

On 2014-03-08 15:09, Mike Snitzer wrote:
> On Sat, Mar 08 2014 at  4:33pm -0500,
> Hannes Reinecke <hare@xxxxxxx> wrote:
>
> > On 03/08/2014 07:13 PM, Mike Snitzer wrote:
> > > I'm calm.. was just a bit frustrated.  But this isn't a big deal.
> > > I'll make an effort to reach out to relevant people sooner when
> > > similar stuff is reported against recently upstreamed code.  Would be
> > > cool if you did the same.  I can relate to needing to have the distro
> > > vendor hat on (first needing to determine/answer "is this issue
> > > specific to our hacked distro kernel?", etc).
> > The patch I made wasn't in the context of 'recently upstreamed
> > code', it was due to a backport Jan Kara did for our next distro
> > kernels (3.12-based).
>
> "3.12-based" means nothing given all the backporting for SLES, much like
> "3.10-based" means nothing in the context of RHEL7.
>
> The only way this fix is applicable is in the context of "recently
> upstreamed code", commit 1874198 ("blk-mq: rework flush sequencing
> logic") went upstream for v3.14-rc3.
>
> Jens, please feel free to queue this tested fix for 3.14-rc:

Thanks Mike, queued up. Also queued up the list addition reversal change.

--
Jens Axboe

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