Re: [patch] Add a writer prior lock methord for rwlock

[William Lee Irwin III]

On Wed, Aug 04, 2004 at 06:29:21PM +0800, Liu Tao wrote:
> write_forcelock() should be used to avoid readers starve writers, or for 
> writers
> to update shared data as far as possiable, since it prevents new readers 
> acquire
> the lock while it's waiting for existing readers release their locks. 
> I'm not clear
> who will need it now,  since it doesn't affect the original read_lock() 
> and write_lock()
> I tried it.

Unfortunately this will deadlock. read locks are acquired recursively.
The algorithms dependent on this need to be redesigned.


-- wli
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