Ben LaHaise wrote:
> How about the following instead? Warning: compiled, not tested.
>
> -ben
>
> +/* returns 1 if it successfully obtained the semaphore for write */
> +static inline int down_write_trylock(struct rw_semaphore *sem)
> +{
> + int old = RW_LOCK_BIAS, new = 0
On Mon, 19 Feb 2001, Brian J. Watson wrote:
> Here is an x86 implementation of down_read_trylock() and down_write_trylock()
> for read/write semaphores. As with down_trylock() for exclusive semaphores, they
> don't block if they fail to get the lock. They just return 1, as opposed to 0 in
> the s
Here is an x86 implementation of down_read_trylock() and down_write_trylock()
for read/write semaphores. As with down_trylock() for exclusive semaphores, they
don't block if they fail to get the lock. They just return 1, as opposed to 0 in
the success case.
The algorithm should be robust. It shou
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