From mboxrd@z Thu Jan  1 00:00:00 1970
From: Changli Gao <xiaosuo@gmail.com>
Subject: Re: [RFC] sched: implement the exclusive wait queue as a LIFO queue
Date: Wed, 28 Apr 2010 21:47:36 +0800
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	<8566.1272447243@redhat.com>
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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
To: David Howells <dhowells@redhat.com>
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On Wed, Apr 28, 2010 at 5:34 PM, David Howells <dhowells@redhat.com> wr=
ote:
>
> Can you split the wait queue code and differentiate exclusive wait qu=
eues with
> LIFO functionality from wait queues with FIFO functionality. =C2=A0I =
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.

--=20
Regards=EF=BC=8C
Changli Gao(xiaosuo@gmail.com)