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Goncalves" , Andrew Morton , Boqun Feng , Ingo Molnar , John Ogness , Mel Gorman , Petr Mladek , Thomas Gleixner , Waiman Long , Will Deacon Subject: Re: [PATCH v2 1/2] seqlock: Do the lockdep annotation before locking in do_write_seqcount_begin_nested() Message-ID: <20230626124629.UDvM0W3m@linutronix.de> References: <20230623171232.892937-1-bigeasy@linutronix.de> <20230623171232.892937-2-bigeasy@linutronix.de> <20230626081254.XmorFrhs@linutronix.de> <0a0c768c-227d-c0cd-1b91-5a884d161c1b@I-love.SAKURA.ne.jp> <20230626104831.GT4253@hirez.programming.kicks-ass.net> <3a4ad958-a9a5-c367-a16d-bd89a173a628@I-love.SAKURA.ne.jp> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: X-Rspamd-Queue-Id: 667FC1C0022 X-Rspam-User: X-Stat-Signature: epmuwfb77pt9z16k46q5fig35zps1yte X-Rspamd-Server: rspam01 X-HE-Tag: 1687783593-449453 X-HE-Meta: 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 ynwHJFw+ hZ1DIPzv8yQRUPO0Lseg6S3mZ14hP8xmAo06QY00IirBzpIcW4+U9XmCNcNXWizIOWzlOGvuXzOwuQO4adXqE0CodKyB+AtxPSsoNvOBN8ZJpRaQ4CZKoFhFZvRs4Kmj7aHAhh0cy9dQwCLAtP97E2ohRx01UcQTM4n7Jd1AkIm1zcla760pkGrYyFr3Oc6eK8uwie8U+R/eCv9TOCqU0jzGS7Q== 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: On 2023-06-26 13:35:39 [+0200], Michal Hocko wrote: > Is there any reason to backport RT specific fixup to stable trees? I > mean seriously, is there any actual memory hotplug user using > PREEMPT_RT? I would be more than curious to hear the usecase. There is no need for stable backports for RT-only fixes. We have RT-stable trees for that. The reason why we fix it in the RT-stable tree is not have something broken that was known to work. Sebastian