Re: [PATCH RESEND v2 1/1] percpu_rw_semaphore: reimplement to notblock the readers unnecessarily

[Oleg Nesterov]

On 11/09, Oleg Nesterov wrote:
>
> 	static bool xxx(brw)
> 	{
> 		down_write(&brw->rw_sem);
> 		if (!atomic_read(&brw->slow_read_ctr))
>			return true;

I meant, try_to_down_write(). Otherwise this can obviously deadlock.

Oleg.

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