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[2003:cb:c71a:5900:d106:4706:528a:7cd5]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-43f235a5e9dsm53785615e9.36.2025.04.10.06.41.09 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 10 Apr 2025 06:41:11 -0700 (PDT) Message-ID: <3270dbbb-0bd3-4217-90f5-441210fef87b@redhat.com> Date: Thu, 10 Apr 2025 15:41:04 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v7 3/3] mm/mempolicy: Support memory hotplug in weighted interleave To: Honggyu Kim , Rakie Kim , akpm@linux-foundation.org Cc: kernel_team@skhynix.com, gourry@gourry.net, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-cxl@vger.kernel.org, joshua.hahnjy@gmail.com, dan.j.williams@intel.com, ying.huang@linux.alibaba.com, Jonathan.Cameron@huawei.com, osalvador@suse.de, yunjeong.mun@sk.com References: <20250408073243.488-1-rakie.kim@sk.com> <20250408073243.488-4-rakie.kim@sk.com> <19562f7e-38ce-41fc-8dfc-bfd6b1259291@redhat.com> <203ed4e9-4691-483c-bf42-3035b3ad3539@redhat.com> <755ad3ff-17d5-4610-94ce-2f2d775b518d@sk.com> From: David Hildenbrand Autocrypt: addr=david@redhat.com; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: 552AB40005 X-Stat-Signature: gt1puhgophs9y8mh5y4cikom5c3rki7q X-HE-Tag: 1744292475-996789 X-HE-Meta: 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 5zemzb98 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 10.04.25 15:25, Honggyu Kim wrote: > Hi David, > > On 4/9/2025 8:52 PM, David Hildenbrand wrote: >> On 09.04.25 13:39, Honggyu Kim wrote: >>> Hi David, >>> >>> On 4/9/2025 6:05 PM, David Hildenbrand wrote: >>>> On 08.04.25 09:32, Rakie Kim wrote: > [...snip...] >>>>> Signed-off-by: Rakie Kim >>>>> Signed-off-by: Honggyu Kim >>>>> Signed-off-by: Yunjeong Mun >>>> >>>> Why are the other SOF in there? Are there Co-developed-by missing? >>> >>> I initially found the problem and fixed it with my internal implementation but >>> Rakie also had his idea so he started working on it.  His initial implementation >>> has almost been similar to mine. >>> >>> I thought Signed-off-by is a way to express the patch series contains our >>> contribution, but if you think it's unusual, then I can add this. >> >> Please see Documentation/process/submitting-patches.rst, > > Thanks for the info. > >> and note that these are not "patch delivery" SOB. >> >> " >> The Signed-off-by: tag indicates that the signer was involved in the >> development of the patch, or that he/she was in the patch's delivery path. > > Yunjeong and I have been involved in finding the problem and also concluded this > issue is related to hotplug together with our initial implementations before > this patch. So I guess it is the former case. IIRC, usually we use Co-developed-by + SOB only if there are actual code contributions: when you would consider someone a "co-author". "Co-developed-by: denotes authorship" For suggestions we use Suggested-by, and for things that popped up during a review, it's usually a good idea that reviewers supply a Reviewed-by at the end. So I guess Co-developed-by + SOB is appropriate if people consider themselves co-authors, in addition to the main author. > >> " >> >> and >> >> " >> Co-developed-by: states that the patch was co-created by multiple developers; >> it is used to give attribution to co-authors (in addition to the author >> attributed by the From: tag) when several people work on a single patch.  Since >> Co-developed-by: denotes authorship, every Co-developed-by: must be immediately >> followed by a Signed-off-by: of the associated co-author.  Standard sign-off > > So the Co-developed-by comes before Signed-off-by. Yes. -- Cheers, David / dhildenb