Re: [PATCH] s390 (8/10): zfcp fixes

From: Heiko Carstens (heiko.carstens_at_de.ibm.com)
Date: 03/31/04

  • Next message: Marc-Christian Petersen: "Re: 2.6.5-rc3-mm2" 
    To: Greg Kroah-Hartman <greg@kroah.com>
Date:	Wed, 31 Mar 2004 19:57:18 +0200

    Hi Greg,

    >> I'll ask because the zfcp patches are still pending and I want to get this
    >> issue resolved before the next try to get them integrated.
    >I think you need to talk to the scsi people, as kfree() should _never_
    >need to be set as the release function. There's something just wrong
    >with the design if that is necessary.

    Actually this issue is not SCSI related, but a generic problem that one
    can run into when fiddling around with modules / module unloading.

    This was already discussed elsewhere. Please have a look here:

    http://lwn.net/Articles/67421/
    (paragraph "Module unloading in a reference counted world")

    and here for the whole thread:

    http://www.ussg.iu.edu/hypermail/linux/kernel/0401.2/1832.html
    (just saw that you participated there :)

    I would be more than happy to have a nice release function for the zfcp
    generated objects, but I don't think this is currently possible without
    having the potential problem to run into an Oops after module unloading.

    Heiko

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