linux-kernel - Re: random: Wake up all getrandom(2) callers when pool is ready

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Message-ID: <9183463.XNhR7e5TNc@tauon>
Date:	Thu, 21 May 2015 10:36:47 +0200
From:	Stephan Mueller <smueller@...onox.de>
To:	Herbert Xu <herbert@...dor.apana.org.au>
Cc:	pebolle@...cali.nl, andreas.steffen@...ongswan.org, tytso@....edu,
	sandyinchina@...il.com, linux-crypto@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: random: Wake up all getrandom(2) callers when pool is ready

Am Donnerstag, 21. Mai 2015, 16:19:54 schrieb Herbert Xu:

Hi Herbert,

>On Thu, May 21, 2015 at 09:55:17AM +0200, Stephan Mueller wrote:
>> So, I will create a 2nd wait queue in random.c for uninterruptible waits,
>> change the get_blocking_random_bytes back to void and use wait_event to
>> wait
>> for the initialization.
>
>Hold your horses.  You don't need a second queue, you just need to
>change wake_up_interruptible to wake_up.

A simple change to wake_up is not working -- I already checked. But the 
proposed wake_up_all does the trick.


Ciao
Stephan
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