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    SubjectRe: [RFC][PATCH] irq: remove IRQF_DISABLED
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    On Mon, 2009-03-02 at 18:55 +0100, Bartlomiej Zolnierkiewicz wrote:
    > > Could we make just the IDE driver itself enable interrupts? Sure. But that
    >
    > Actually it has been doing it for years (some host drivers don't do this by
    > default and still need "hdparm -u" or equivalent but I was planning to change
    > it for 2.6.30).

    What does it use to do that? A local_irq_enable() in hardirq context
    will make lockdep yell bloody murder :-).

    Then there is local_irq_enable_in_hardirq(), which plain simply lies
    when lockdep is enabled -- IOW it would generate horrid irq latencies.

    Not having to deal with IRQ recursion in lockdep helps.



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