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Date: Mon, 10 May 2004 21:56:26 -0700
From: Andrew Morton <akpm@osdl.org>
To: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>
Cc: rene.herman@keyaccess.nl, torvalds@osdl.org, linux-kernel@vger.kernel.org,
       arjanv@redhat.com
Subject: Re: Linux 2.6.6 "IDE cache-flush at shutdown fixes"
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Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl> wrote:
>
> There is a problem with new 2.6 generic ->shutdown framework,
>  it doesn't differentiate between reboot / halt and power_off.
>  We may try to fix it or revert to 2.4 way of doing things if
>  this is too big change for 2.6.

It's a bit grubby, but we could easily add a fourth state to
`system_state': split SYSTEM_SHUTDOWN into SYSTEM_REBOOT and SYSTEM_HALT. 
That would be a quite simple change.