Messages in this thread | | | Date | Thu, 07 Feb 2002 12:57:19 -0800 | From | Andrew Morton <> | Subject | Re: [RFC] New locking primitive for 2.5 |
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yodaiken@fsmlabs.com wrote: > > llseek: > atomic_enquee request > if no room gotta sleep > else if trylock mutex > return > else > do work > loop: > process any pending requests > release lock; > if pending_requests && !(trylock mutex) goto loop
This is how printk() works. It was a very powerful and satisfactory solution to a nasty locking/atomicity problem. It'd be nice to have a more generic way of expressing that solution.
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