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From:   Greg KH <gregkh@linuxfoundation.org>
To:     Laurent Dufour <ldufour@linux.ibm.com>
Cc:     linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org,
        Michael Ellerman <mpe@ellerman.id.au>,
        Benjamin Herrenschmidt <benh@kernel.crashing.org>,
        Paul Mackerras <paulus@samba.org>,
        Nathan Lynch <nathanl@linux.ibm.com>,
        Scott Cheloha <cheloha@linux.ibm.com>, stable@vger.kernel.org
Subject: Re: [PATCH] powerpc/hotplug: assign hot added LMB to the right node
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On Thu, Dec 03, 2020 at 11:15:14AM +0100, Laurent Dufour wrote:
> This patch applies to 5.9 and earlier kernels only.
> 
> Since 5.10, this has been fortunately fixed by the commit
> e5e179aa3a39 ("pseries/drmem: don't cache node id in drmem_lmb struct").

Why can't we just backport that patch instead?  It's almost always
better to do that than to have a one-off patch, as almost always those
have bugs in them.

thanks,

greg k-h