spin_lock_irq vs. spin_lock_irqsave.

From: Daniel Kobras (daniel.kobras@student.uni-tuebingen.de)
Date: Sat Jun 17 2000 - 09:34:42 EST

Hi!

I'd like to know the terms under which saving and restoring processor
flags can be omitted? In other words, how can I determine if I have to use
spin_lock_irqsave or if spin_lock_irq is sufficient? I had a look into
Documentation/spinlocks.txt, but unfortunately the _irq/_bh variants
aren't even mentioned.

Thankful for any hint,
Daniel. 

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