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From: Andreas Steinmetz <ast@domdv.de>
To: linux-kernel@vger.kernel.org
Subject: reboot notifier priority definitions
Date: Tue, 11 Sep 2001 01:56:34 +0200 (CEST)	[thread overview]
Message-ID: <XFMail.20010911015634.ast@domdv.de> (raw)

As a suggestion to prevent further shutdown/reboot notifier processing problems
here's a (crude) attempt of definitions for include/linux/notifier.h. I do
believe it needs to be heavily reworked by someone with a broad kernel overview.

#define NOTIFY_REBOOT_PHYSICAL    0x00 /* scsi */
#define NOTIFY_REBOOT_LOGICAL     0x10 /* md, lvm */
#define NOTIFY_REBOOT_FS          0x20 /* knfsd */
#define NOTIFY_REBOOT_APPLICATION 0x30 /* tux */

The current situation of not having such definitions already did lead to a
kernel oops (md<->scsi). I do fear that if such definitions are not introduced:

1. code maintainers will strictly stick to priority 0 or will use random
   and not interoperable priorities

2. more and more interference problems will arise due to the above point


Andreas Steinmetz
D.O.M. Datenverarbeitung GmbH

             reply	other threads:[~2001-09-10 23:56 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2001-09-10 23:56 Andreas Steinmetz [this message]
2001-09-11  1:18 ` reboot notifier priority definitions Neil Brown
2001-09-11  1:26   ` Andreas Steinmetz
2001-09-11  5:34     ` Neil Brown
2001-09-11 14:46     ` Alan Cox

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