linux-kernel - Re: linux-next: manual merge of the akpm-current tree with the vhost tree

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Date:   Tue, 10 Mar 2020 10:06:02 +0100
From:   David Hildenbrand <david@...hat.com>
To:     "Michael S. Tsirkin" <mst@...hat.com>
Cc:     Stephen Rothwell <sfr@...b.auug.org.au>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Alexander Duyck <alexander.h.duyck@...ux.intel.com>
Subject: Re: linux-next: manual merge of the akpm-current tree with the vhost
 tree

On 10.03.20 10:04, Michael S. Tsirkin wrote:
> On Tue, Mar 10, 2020 at 09:39:21AM +0100, David Hildenbrand wrote:
>> On 10.03.20 09:02, Stephen Rothwell wrote:
>>> Hi all,
>>>
>>> Today's linux-next merge of the akpm-current tree got a conflict in:
>>>
>>>   drivers/virtio/virtio_balloon.c
>>>
>>> between commit:
>>>
>>>   b5769cdc14fc ("virtio-balloon: Switch back to OOM handler for VIRTIO_BALLOON_F_DEFLATE_ON_OOM")
>>>
>>> from the vhost tree and commits:
>>>
>>>   b64c4d5bea98 ("virtio-balloon: pull page poisoning config out of free page hinting")
>>>   80c03575431c ("virtio-balloon: add support for providing free page reports to host")
>>>
>>> from the akpm-current tree.
>>>
>>> I looked at the conflict for a while but could not easily see how to
>>> reconcile it, so I decided to revert the vhost tree commit for today.
>>> Some advice would be appreciated.
>>>
>>
>> Yes, the free page reporting features are currently in Andrews tree and
>> most probably won't go via the vhost tree due to the core-mm changes.
>> Ideally, the VIRTIO_BALLOON_F_DEFLATE_ON_OOM fix would go in unchanged,
>> because some people might be interested in backporting it (it's not a
>> stable fix, though).
>>
>> I think rebasing any way round shouldn't be too hard.
>>
>> @Alex, Michael, what's your thought on this?
> 
> I propose rebasing on top of the akpm tree and merging through there.
> David could you do the rebase pls? I'll review and ack.
> 
> While there, keeping virtio_balloon_unregister_shrinker and
> virtio_balloon_register_shrinker around might be a good idea to
> minimize backporting pain.

Will do.

-- 
Thanks,

David / dhildenb