linux-kernel - Re: [PATCH 1/2] mtip32xx: Remove 'registers' and 'flags' from sysfs

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Date:	Wed, 6 Jun 2012 05:25:55 +0900
From:	Greg KH <gregkh@...uxfoundation.org>
To:	Asai Thambi S P <asamymuthupa@...ron.com>
Cc:	Jens Axboe <axboe@...nel.dk>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Sam Bradshaw <sbradshaw@...ron.com>
Subject: Re: [PATCH 1/2] mtip32xx: Remove 'registers' and 'flags' from sysfs

On Tue, Jun 05, 2012 at 11:18:15AM -0700, Asai Thambi S P wrote:
> On 6/5/2012 2:33 AM, Greg KH wrote:
> 
> > On Mon, Jun 04, 2012 at 12:43:03PM -0700, Asai Thambi S P wrote:
> >>
> >> This patch removes entries 'registers' and 'flags' from sysfs. Updated ABI file
> >> to reflect this change.
> >>
> >> Reported-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> >> Signed-off-by: Asai Thambi S P <asamymuthupa@...ron.com>
> > 
> > Much nicer, thanks for doing this:
> > 
> > Acked-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> > 
> > But, one question on a different sysfs file:
> > 
> >>  What:           /sys/block/rssd*/status
> >>  Date:           April 2012
> >>  KernelVersion:  3.4
> >>  Contact:        Asai Thambi S P <asamymuthupa@...ron.com>
> >>  Description:    This is a read-only file. Indicates the status of the device.
> > 
> > What "status" is this showing?  Why is this a sysfs file?  Who
> > needs/wants it?
> 
> 
> This shows the device status - online, write_protect or thermal_shutdown. This
> would be used by management application.

Is it used by a management application?  Shouldn't such a tool use the
"standard" block device status files instead?  I thought we exported
that information already in the /sys/block/* files.

thanks,

greg k-h
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