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Date: Tue, 28 Aug 2012 11:52:44 +0300
From: Haggai Eran <haggaie@mellanox.com>
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Subject: Re: [PATCH 2/3] mm: Move the tlb flushing into free_pgtables
References: <1345975899-2236-1-git-send-email-haggaie@mellanox.com>  <1345975899-2236-3-git-send-email-haggaie@mellanox.com> <1346041154.2296.1.camel@laptop>
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To: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: "linux-mm@kvack.org" <linux-mm@kvack.org>, Andrea Arcangeli <aarcange@redhat.com>, Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>, Andrew Morton <akpm@linux-foundation.org>, Sagi Grimberg <sagig@mellanox.com>, Or Gerlitz <ogerlitz@mellanox.com>, Christoph Lameter <clameter@sgi.com>

On 27/08/2012 07:19, Peter Zijlstra wrote:
> On Sun, 2012-08-26 at 13:11 +0300, Haggai Eran wrote:
>> The conversion of the locks taken for reverse map scanning would
>> require taking sleeping locks in free_pgtables() and we cannot sleep
>> while gathering pages for a tlb flush. 
> We can.
>
After further reading I tend to agree. We can drop this patch and patch
number 3 then and focus on the first patch in this set.

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