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    SubjectRe: [PATCH 1/8] Notifier chain update
    On Wed, Jan 18, 2006 at 03:23:20PM -0500, Alan Stern wrote:
    > You can't use RCU protection around code that may sleep. Whether the code
    > remains loaded in the kernel or is part of a removable module doesn't
    > enter into it.

    A notifier callee should not be sleeping, if anything it should be putting
    its work onto a workqueue and completing it when it gets scheduled if it
    has to do something that blocks.

    "You know, I've seen some crystals do some pretty trippy shit, man."
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