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Date: Thu, 20 Nov 2014 10:49:37 -0500
From: Johannes Weiner <hannes@cmpxchg.org>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-kernel@vger.kernel.org, stable@vger.kernel.org,
        Rik van Riel <riel@redhat.com>, Minchan Kim <minchan@kernel.org>,
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        Ozgun Erdogan <ozgun@citusdata.com>,
        Peter Zijlstra <peterz@infradead.org>,
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        Tejun Heo <tj@kernel.org>, Vlastimil Babka <vbabka@suse.cz>,
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        Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: [PATCH 3.14 102/122] mm + fs: prepare for non-page entries in
 page cache radix trees
Message-ID: <20141120154937.GA325@phnom.home.cmpxchg.org>
References: <20141119205208.812884198@linuxfoundation.org>
 <20141119205212.209198738@linuxfoundation.org>
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On Wed, Nov 19, 2014 at 12:52:32PM -0800, Greg Kroah-Hartman wrote:
> 3.14-stable review patch.  If anyone has any objections, please let me know.
> 
> ------------------
> 
> From: Johannes Weiner <hannes@cmpxchg.org>
> 
> commit 0cd6144aadd2afd19d1aca880153530c52957604 upstream.
> 
> shmem mappings already contain exceptional entries where swap slot
> information is remembered.
> 
> To be able to store eviction information for regular page cache, prepare
> every site dealing with the radix trees directly to handle entries other
> than pages.

I don't see the rest of the thrash-detection patches in this series.
Without anybody actually planting "entries other than pages" in the
radix trees, why is this needed in -stable?