linux-kernel - Re: [PATCH] RFC: futex: make futex_lock

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Message-Id: <200910301739.57224.arnd@arndb.de>
Date:	Fri, 30 Oct 2009 17:39:56 +0000
From:	Arnd Bergmann <arnd@...db.de>
To:	Darren Hart <dvhltc@...ibm.com>
Cc:	"lkml, " <linux-kernel@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...e.hu>,
	Eric Dumazet <eric.dumazet@...il.com>,
	Dinakar Guniguntala <dino@...ibm.com>,
	"Stultz, John" <johnstul@...ibm.com>
Subject: Re: [PATCH] RFC: futex: make futex_lock_pi interruptible

On Friday 30 October 2009 16:23:12 Darren Hart wrote:
> I don't quite follow. There will be a 1:many relationship between 
> mutex:threads, but there should be a 1:1 relationship between 
> threads:env. Since multiple threads can block on one mutex, the above 
> struct wouldn't provide the necessary number of env to set the jmp point 
> for each one.... am I misunderstanding your suggestion?
> 

No, you are totally right with this. My suggestion would not work.

	Arnd <><
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