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Wysocki" , Danilo Krummrich , Tarun Sahu , Pasha Tatashin , =?utf-8?B?TWljaGHFgiBDxYJhcGnFhHNraQ==?= , Jordan Richards , Ewan Milne , John Meneghini , "Lombardi, Maurizio" , Stuart Hayes , Laurence Oberman , Bart Van Assche , Bjorn Helgaas , "Martin K . Petersen" , John Garry Subject: Re: [PATCH v14 0/5] shut down devices asynchronously From: "Martin K. 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i6vW+TtIj8gU1m6VtIg== David, > This patchset allows the kernel to shutdown devices asynchronously and > unrelated async devices to be shut down in parallel to each other. > > Only devices which explicitly enable it are shut down asynchronously. > The default is for a device to be shut down from the synchronous > shutdown loop. > > This can dramatically reduce system shutdown/reboot time on systems > that have multiple devices that take many seconds to shut down (like > certain NVMe drives). On one system tested, the shutdown time went > from 11 minutes without this patch to 55 seconds with the patch. And > on another system from 80 seconds to 11. Looks OK to me. Reviewed-by: Martin K. Petersen -- Martin K. Petersen