linux-kernel - Re: [PATCH] Remove might_sleep from wait_event

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Message-ID: <20150203110630.GK26304@twins.programming.kicks-ass.net>
Date:	Tue, 3 Feb 2015 12:06:30 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	NeilBrown <neilb@...e.de>
Cc:	Mikulas Patocka <mpatocka@...hat.com>,
	Zdenek Kabelac <zkabelac@...hat.com>, tglx@...utronix.de,
	ilya.dryomov@...tank.com, umgwanakikbuti@...il.com,
	Oleg Nesterov <oleg@...hat.com>,
	Ingo Molnar <mingo@...nel.org>, dm-devel@...hat.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Remove might_sleep from wait_event_cmd

On Tue, Feb 03, 2015 at 09:12:53AM +1100, NeilBrown wrote:
> I support this patch.

It should hopefully already be en-route to tip.

> However in case it doesn't get in, I've queued up a patch to change raid5.c
> to use __wait_event_cmd instead...

So those primitives are useful in their own; their typical use would be
when you already know @cond to be false and want to avoid the extra
invocation.
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