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Re: BUG or not? GFP_KERNEL with interrupts disabled.: msg#00228

Subject: Re: BUG or not? GFP_KERNEL with interrupts disabled.
   From: shmulik.hen@xxxxxxxxx
   Date: Thu, 27 Mar 2003 15:32:02 +0200 (IST)

   Further more, holding a lock_irq doesn't mean bottom halves are disabled
   too, it just means interrupts are disabled and no *new* softirq can be
   queued. Consider the following situation:
   
I think local_bh_enable() should check irqs_disabled() and honour that.
What you are showing here, that BH's can run via local_bh_enable()
even when IRQs are disabled, is a BUG().

IRQ disabling is meant to be stronger than softint disabling.

Ingo/Linus?




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