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Date: Tue, 10 Mar 2015 17:16:37 +0100
From: Peter Zijlstra <peterz@infradead.org>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>,
        "linux-tip-commits@vger.kernel.org" 
	<linux-tip-commits@vger.kernel.org>,
        Davidlohr Bueso <dave@stgolabs.net>, Peter Anvin <hpa@zytor.com>,
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        Dave Jones <davej@codemonkey.org.uk>,
        Ming Lei <ming.lei@canonical.com>,
        Tim Chen <tim.c.chen@linux.intel.com>
Subject: Re: [tip:locking/core] locking/rwsem: Fix lock optimistic spinning
 when owner is not running
Message-ID: <20150310161637.GG2896@worktop.programming.kicks-ass.net>
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 <20150307171347.GA30365@redhat.com>
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On Tue, Mar 10, 2015 at 09:04:23AM -0700, Linus Torvalds wrote:
> 
> I think we should just make 'task_struct_cachep' have SLAB_DESTROY_BY_RCU.

Yes, that'll work. Also for the other cases Oleg found previously I
think.