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From: Changli Gao <xiaosuo@gmail.com>
Date: Wed, 28 Apr 2010 21:47:36 +0800
Message-ID: <p2t412e6f7f1004280647y42b06418m4734e74a4628b6bd@mail.gmail.com>
Subject: Re: [RFC] sched: implement the exclusive wait queue as a LIFO queue
To: David Howells <dhowells@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>, Alexander Viro <viro@zeniv.linux.org.uk>,
       Andrew Morton <akpm@linux-foundation.org>,
       "Eric W. Biederman" <ebiederm@xmission.com>,
       Davide Libenzi <davidel@xmailserver.org>,
       Roland Dreier <rolandd@cisco.com>,
       Stefan Richter <stefanr@s5r6.in-berlin.de>,
       Peter Zijlstra <a.p.zijlstra@chello.nl>,
       "David S. Miller" <davem@davemloft.net>,
       Eric Dumazet <dada1@cosmosbay.com>, Christoph Lameter <cl@linux.com>,
       Andreas Herrmann <andreas.herrmann3@amd.com>,
       Thomas Gleixner <tglx@linutronix.de>, Takashi Iwai <tiwai@suse.de>,
       linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org
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On Wed, Apr 28, 2010 at 5:34 PM, David Howells <dhowells@redhat.com> wrote:
>
> Can you split the wait queue code and differentiate exclusive wait queues with
> LIFO functionality from wait queues with FIFO functionality.  I can see why
> your suggestion is desirable.
>

OK. I will use two lists: one for non-exclusive wait queues, and the
other for exclusive wait queues, and I'll add new interfaces for LIFO
functionality instead of changing the current interfaces.

-- 
Regards，
Changli Gao(xiaosuo@gmail.com)
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