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Subject: Re: [rfc] "laptop mode"
From: Xavier Bestel <xavier.bestel@free.fr>
To: Andrew Morton <akpm@zip.com.au>
Cc: Andreas Dilger <adilger@clusterfs.com>,
        lkml <linux-kernel@vger.kernel.org>
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Date: 05 Jun 2002 12:47:38 +0200
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Le mer 05/06/2002 ? 12:39, Andrew Morton a ?crit :
> Xavier Bestel wrote:
> > 
> > Le mer 05/06/2002 ? 01:43, Andrew Morton a ?crit :
> > 
> > > Also, it has been suggested that the feature become more fully-fleshed,
> > > to support desktops with one disk spun down, etc.  It's not really
> > > rocket science to do that - the `struct backing_dev_info' gives
> > > a specific communication channel between the high-level VFS code and
> > > the request queue.  But that would require significantly more surgery
> > > against the writeback code, so I'm fishing for requirements here.  If
> > > the current (simple) patch is sufficient then, well, it is sufficient.
> > 
> > Have per-disk laptop-mode, so that some user-mode proggy (e.g. hotplug)
> > could decide what to do.
> 
> But why?

e.g. not mess with cdroms, autoalimented disks, some mp3-players seen as
usb-storage, whatever.

I just realized your patch was partly ide-specific, perhaps what I said
doesn't apply ?

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