From: Aaron Lu <aaron.lu@intel.com>
To: Phillip Susi <psusi@ubuntu.com>, linux-scsi@vger.kernel.org
Cc: linux-kernel@vger.kernel.org,
"linux-ide@vger.kernel.org" <linux-ide@vger.kernel.org>,
Tejun Heo <tj@kernel.org>, Robert Hancock <hancockr@shaw.ca>
Subject: Re: [PATCH 1/2] libata: use sleep instead of standby command
Date: Tue, 05 Nov 2013 10:44:32 +0800 [thread overview]
Message-ID: <52785B90.4050807@intel.com> (raw)
In-Reply-To: <52785A4E.7080006@ubuntu.com>
On 11/05/2013 10:39 AM, Phillip Susi wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA512
>
> On 11/04/2013 09:23 PM, Aaron Lu wrote:
>> I suppose this is mainly for runtime PM? Since for system
>> suspend/hibernation, the disk and its controller will be powered
>> off anyway.
>
> Yes, or the second patch also helps when one manually issues hdparm
> - -Y, which otherwise will cause the drive to be woken up to answer the
> CHECK POWER command, which udisks issues to decide if it should skip
> polling the SMART status of the drive.
OK, I see.
I wish udidks can do both of these(polling smart status and put the disk
into sleep mode), so that it knows when the disk is in sleep mode and it
will not send out the needless poll...
-Aaron
next prev parent reply other threads:[~2013-11-05 2:43 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1383612780-6591-1-git-send-email-psusi@ubuntu.com>
2013-11-05 2:23 ` [PATCH 1/2] libata: use sleep instead of standby command Aaron Lu
2013-11-05 2:39 ` Phillip Susi
2013-11-05 2:44 ` Aaron Lu [this message]
[not found] ` <1383612780-6591-2-git-send-email-psusi@ubuntu.com>
2013-11-05 2:39 ` [PATCH 2/2] libata: avoid waking disk to check power Aaron Lu
2013-11-05 2:45 ` Phillip Susi
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=52785B90.4050807@intel.com \
--to=aaron.lu@intel.com \
--cc=hancockr@shaw.ca \
--cc=linux-ide@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-scsi@vger.kernel.org \
--cc=psusi@ubuntu.com \
--cc=tj@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).