From: Niklas Cassel <cassel@kernel.org>
To: Damien Le Moal <dlemoal@kernel.org>,
Hannes Reinecke <hare@suse.de>,
"Martin K. Petersen" <martin.petersen@oracle.com>,
Niklas Cassel <cassel@kernel.org>
Cc: W <linuxcdeveloper@gmail.com>,
stable@vger.kernel.org, linux-ide@vger.kernel.org
Subject: Re: [PATCH v2] ata: libata: avoid superfluous disk spin down + spin up during hibernation
Date: Wed, 09 Oct 2024 16:26:59 +0200 [thread overview]
Message-ID: <172848401972.1542808.12439348742745149573.b4-ty@kernel.org> (raw)
In-Reply-To: <20241008135843.1266244-2-cassel@kernel.org>
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
prev parent reply other threads:[~2024-10-09 14:27 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-08 13:58 [PATCH v2] ata: libata: avoid superfluous disk spin down + spin up during hibernation Niklas Cassel
2024-10-09 10:44 ` Damien Le Moal
2024-10-09 14:18 ` Niklas Cassel
2024-10-09 14:26 ` Niklas Cassel [this message]
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