linux-kernel - Re: [patch for-3.7] mm, mempolicy: fix printing stack contents in numa

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Message-ID: <20121017194501.GA24400@redhat.com>
Date:	Wed, 17 Oct 2012 15:45:01 -0400
From:	Dave Jones <davej@...hat.com>
To:	David Rientjes <rientjes@...gle.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	KOSAKI Motohiro <kosaki.motohiro@...il.com>,
	bhutchings@...arflare.com,
	Konstantin Khlebnikov <khlebnikov@...nvz.org>,
	Naoya Horiguchi <n-horiguchi@...jp.nec.com>,
	Hugh Dickins <hughd@...gle.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [patch for-3.7] mm, mempolicy: fix printing stack contents in
 numa_maps

On Wed, Oct 17, 2012 at 12:38:55PM -0700, David Rientjes wrote:

 > >  > Sounds good.  Is it possible to verify that policy_cache isn't getting 
 > >  > larger than normal in /proc/slabinfo, i.e. when all processes with a 
 > >  > task mempolicy or shared vma policy have exited, are there still a 
 > >  > significant number of active objects?
 > > 
 > > Killing the fuzzer caused it to drop dramatically.
 > > 
 > Excellent, thanks.  This shows that the refcounting is working properly 
 > and we're not leaking any references as a result of this change causing 
 > the mempolicies to never be freed.  ("numa_policy" turns out to be 
 > policy_cache in the code, so thanks for checking both of them.)
 > 
 > Could I add your tested-by?

Sure. Here's a fresh one I just baked.

Tested-by: Dave Jones <davej@...hat.com>

	Dave
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