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d=hostedemail.com; s=arc-20220608; t=1736850477; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=+GSRXywrTfu4OZfQgRB+IL9iLc2KfJtSD1X+RNOTv6M=; b=2qlL5TIHlvoUpnMFdYpQHt4np9N7L/BkHrtQER8+A8KYS+JK0Jx5b8NF40s9MOqc4piQuz OCuv23bS8FTOPBS5/Mp9yMAd3q++kydFo6UWpyYKdGVBu21e0D2GSM7iVV62hOWdRydmxd TCQrul2vXszxKF+stZbIq6Fh86i+MeI= X-SMAIL-HELO: localhost.localdomain Received: from unknown (HELO localhost.localdomain)([113.118.66.101]) by sina.com (10.185.250.24) with ESMTP id 67863C23000048EC; Tue, 14 Jan 2025 18:27:51 +0800 (CST) X-Sender: hdanton@sina.com X-Auth-ID: hdanton@sina.com X-SMAIL-MID: 8412510748298 X-SMAIL-UIID: AC5389B190B84A799A1B00FB11CF5C26-20250114-182751-1 From: Hillf Danton To: Andrew Morton , Suren Baghdasaryan Cc: Lorenzo Stoakes , peterz@infradead.org, hannes@cmpxchg.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Vlastimil Babka Subject: Re: [PATCH v9 00/17] reimplement per-vma lock as a refcount Date: Tue, 14 Jan 2025 18:27:36 +0800 Message-ID: <20250114102737.1815-1-hdanton@sina.com> In-Reply-To: <762df2fe-d57a-40b3-b921-47f5b6d84ba2@suse.cz> References: <20250111042604.3230628-1-surenb@google.com> <20250113174941.8c6d5defe18c8b1a7e477ace@linux-foundation.org> <20250113200908.d821636a39e9ca6130a90e24@linux-foundation.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: AE1AB8000A X-Stat-Signature: sgxjird7c6qyq4kds9o9e387zwb5jd5y X-HE-Tag: 1736850475-141974 X-HE-Meta: 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 mtiVNPs4 xo15ijx2zbSzVhGDhAIBI0ZSOEnG8Eg8vuntoCxMeSAaVmA3Fo0jfXEY6NAL1pGDzkXIuHK8duJJvBtYakbSeLPbfIOssF1h2rCdaE3iN9O6dbOhkFAxGXmqLcQ== X-Bogosity: Ham, tests=bogofilter, spamicity=0.001015, 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 Tue, 14 Jan 2025 10:09:42 +0100 Vlastimil Babka > On 1/14/25 05:09, Andrew Morton wrote: > > > > Well, I'm soliciting opinions here. What do others think? > > > > And do you see much urgency with these changes? > > I don't see the urgency and at this point giving it more time seems wise. > Seems like v10 won't be exactly trivial as we'll change from refcount_t to > atomic_t? And I'd like to see PeterZ review the lockdep parts too. +1