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Date: Tue, 17 Mar 2015 13:57:11 -0500 (CDT)
From: Christoph Lameter <cl@linux.com>
X-X-Sender: cl@gentwo.org
To: Mark Rutland <mark.rutland@arm.com>
cc: linux-kernel@vger.kernel.org, Andrew Morton <akpm@linux-foundation.org>,
        Catalin Marinas <catalin.marinas@arm.com>,
        David Rientjes <rientjes@google.com>,
        Jesper Dangaard Brouer <brouer@redhat.com>,
        Joonsoo Kim <iamjoonsoo.kim@lge.com>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Pekka Enberg <penberg@kernel.org>,
        Steve Capper <steve.capper@linaro.org>
Subject: Re: [PATCHv2] mm/slub: fix lockups on PREEMPT && !SMP kernels
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References: <20150317120058.GC23340@leverpostej> <1426594533-18221-1-git-send-email-mark.rutland@arm.com>
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On Tue, 17 Mar 2015, Mark Rutland wrote:

> Commit 9aabf810a67cd97e ("mm/slub: optimize alloc/free fastpath by
> removing preemption on/off") introduced an occasional hang for kernels
> built with CONFIG_PREEMPT && !CONFIG_SMP.

Acked-by: Christoph Lameter <cl@linux.com>