Messages in this thread | | | Date | Thu, 20 Nov 2014 16:21:22 +0000 | From | Mel Gorman <> | Subject | Re: [PATCH 3.14 102/122] mm + fs: prepare for non-page entries in page cache radix trees |
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On Thu, Nov 20, 2014 at 10:49:37AM -0500, Johannes Weiner wrote: > 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?
Patches later on in the stable series depended upon the code structure introduced by this patch even though the thrash-detection stuff was not backported. It could have been backported without it but then the patches would look much different from their mainline equivalent.
-- Mel Gorman SUSE Labs
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