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Thu, 19 Dec 2024 00:03:30 -0800 (PST) Received: from thinkpad ([117.213.97.217]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-2f2ed62cde6sm2963410a91.13.2024.12.19.00.03.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 19 Dec 2024 00:03:30 -0800 (PST) Date: Thu, 19 Dec 2024 13:33:22 +0530 From: Manivannan Sadhasivam To: Christoph Hellwig Cc: "Rafael J. Wysocki" , Ulf Hansson , "Rafael J. Wysocki" , Bjorn Helgaas , kbusch@kernel.org, axboe@kernel.dk, sagi@grimberg.me, linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, andersson@kernel.org, konradybcio@kernel.org, Len Brown , linux-pm@vger.kernel.org Subject: Re: [PATCH] nvme-pci: Shutdown the device if D3Cold is allowed by the user Message-ID: <20241219080322.gskydm7mg6srhv3p@thinkpad> References: <13662231.uLZWGnKmhe@rjwysocki.net> <20241212151354.GA7708@lst.de> <20241214063023.4tdvjbqd2lrylb7o@thinkpad> <20241216171108.6ssulem3276rkycb@thinkpad> <20241216175210.mnc5kp6646sq7vzm@thinkpad> <20241219063052.GA20003@lst.de> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20241219063052.GA20003@lst.de> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241219_080334_538410_19BD1F7A X-CRM114-Status: GOOD ( 14.42 ) X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org On Thu, Dec 19, 2024 at 07:30:52AM +0100, Christoph Hellwig wrote: > On Mon, Dec 16, 2024 at 11:22:10PM +0530, Manivannan Sadhasivam wrote: > > > So what technically is the problem? > > > > > > > NVMe wear out is the problem. > > Btw, it's not just the PE cycles, it's also the sheer time a clean > shutdown can take (or the time for an unclean enable if we don't wait > long enough). > I do agree with you! - Mani -- மணிவண்ணன் சதாசிவம்