Message-ID: <4A4D71C1.9080608@kernel.org>
Date: Fri, 03 Jul 2009 11:49:37 +0900
From: Tejun Heo <tj@kernel.org>
User-Agent: Thunderbird 2.0.0.19 (X11/20081227)
MIME-Version: 1.0
To: Jaswinder Singh Rajput <jaswinder@kernel.org>
CC: LKML <linux-kernel@vger.kernel.org>
Subject: Re: Reminder for feature libata spindown skipping and warning removal
 date Dec 2008
References: <1246587338.2530.17.camel@jaswinder.satnam>
In-Reply-To: <1246587338.2530.17.camel@jaswinder.satnam>
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 1364
Lines: 32

Jaswinder Singh Rajput wrote:
> Hello Tejun,
> 
> What: libata spindown skipping and warning
> When: Dec 2008
> Why:  Some halt(8) implementations synchronize caches for and spin
>       down libata disks because libata didn't use to spin down disk on
>       system halt (only synchronized caches).
>       Spin down on system halt is now implemented.  sysfs node
>       /sys/class/scsi_disk/h:c:i:l/manage_start_stop is present if
>       spin down support is available.
>       Because issuing spin down command to an already spun down disk
>       makes some disks spin up just to spin down again, libata tracks
>       device spindown status to skip the extra spindown command and
>       warn about it.
>       This is to give userspace tools the time to get updated and will
>       be removed after userspace is reasonably updated.
> Who:  Tejun Heo <htejun@gmail.com>
> 
> If you are facing any issue regarding feature removal kindly update the
> "Documentation/feature-removal-schedule.txt" like what you are waiting
> for.

Thanks for the reminder.  Just sent out patch to kill the feature.  :-)

-- 
tejun
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/