Re: [PATCH v2] ata: libata: avoid superfluous disk spin down + spin up during hibernation

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On Tue, 08 Oct 2024 15:58:44 +0200, Niklas Cassel wrote:
> A user reported that commit aa3998dbeb3a ("ata: libata-scsi: Disable scsi
> device manage_system_start_stop") introduced a spin down + immediate spin
> up of the disk both when entering and when resuming from hibernation.
> This behavior was not there before, and causes an increased latency both
> when when entering and when resuming from hibernation.
> 
> Hibernation is done by three consecutive PM events, in the following order:
> 1) PM_EVENT_FREEZE
> 2) PM_EVENT_THAW
> 3) PM_EVENT_HIBERNATE
> 
> [...]

Applied to libata/linux.git (for-6.12-fixes), thanks!

[1/1] ata: libata: avoid superfluous disk spin down + spin up during hibernation
      https://git.kernel.org/libata/linux/c/a38719e3

Kind regards,
Niklas





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