Re: [PATCH 3.14 102/122] mm + fs: prepare for non-page entries in page cache radix trees

From: Johannes Weiner
Date: Thu Nov 20 2014 - 10:50:14 EST

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@xxxxxxxxxxx>
> 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?
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