Re: [GIT PULL] ata changes for 5.18-rc1

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On Thu, Mar 24, 2022 at 03:38:00PM +0900, Damien Le Moal wrote:
> On 3/24/22 15:28, Christoph Hellwig wrote:
> > On Thu, Mar 24, 2022 at 08:45:56AM +0900, Damien Le Moal wrote:
> >> Mario, let's check what other distros do first before deciding. Fedora for
> >> sure has a default of 3 and I have never seen any issue with it (and I
> >> have been using Fedora for a long time with many different drives).
> >>
> >> Not sure what distro you are using, but if it is not Fedora, please check.
> >> We should check at least Debian, Ubuntu, SUSE, RHEL and CentOS. I can
> >> check some other minor ones too as I know users.
> > 
> > Debian:
> > 
> > hch@brick:~/work/linux$ grep CONFIG_SATA_MOBILE_LPM_POLICY /boot/config-5.10.0-1*
> > /boot/config-5.10.0-10-amd64:CONFIG_SATA_MOBILE_LPM_POLICY=3
> > /boot/config-5.10.0-11-amd64:CONFIG_SATA_MOBILE_LPM_POLICY=3
> > /boot/config-5.10.0-12-amd64:CONFIG_SATA_MOBILE_LPM_POLICY=3
> 
> Thanks. Debian testing also has the default at 3.
> 
> Mario reported that Ubuntu and Arch also use 3, and that RHEL has 0 as
> default but changes it to 3 after boot.
> 
> Gentoo default config is also 3. Checking CentOS and [open]SUSE now.

CentOS uses the RHEL configs and defaults to 0.  I do agree that
renaming config options can be problematic, but the heads up from Damien
helped. It will not be an issue for Fedora, CentOS, and RHEL.

Justin
 
> So far, it is looking like 3 is a sane default.
> 
> -- 
> Damien Le Moal
> Western Digital Research



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