Re: [PATCH 1/1] NBD: fix I/O hang on disconnected nbds

[Paul Clements]

Andrew Morton wrote:
> On Mon, 09 Feb 2009 13:21:51 -0500
> Paul Clements <paul.clements@xxxxxxxxxxxx> wrote:

> > This problem was introduced by the new request handling thread code
> > ("NBD: allow nbd to be used locally", 3/2008), which entered into 
> > mainline around 2.6.25.
>
> Seems that the patch applies to 2.6.26, but not to 2.6.25.

OK, couldn't remember the exact timeframe.

> > The fix, which is fairly simple, is to restore the check for lo->sock
> > being NULL in do_nbd_request. This causes I/O to an uninitialized nbd to
> > immediately fail with an I/O error, as it did prior to the introduction 
> > of this bug.
>
> I marked this as needing backporting into 2.6.26.x, 2.6.27.x and
> 2.6.28.x.  OK?

Yes, that would be a good idea.

Thanks,
Paul


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