| Date | Fri, 10 Jan 2014 14:39:57 -0500 | From | Rik van Riel <> | Subject | Re: [patch 5/9] mm + fs: prepare for non-page entries in page cache radix trees |
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On 01/10/2014 01:10 PM, Johannes Weiner wrote: > 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. > > The common lookup functions will filter out non-page entries and > return NULL for page cache holes, just as before. But provide a raw > version of the API which returns non-page entries as well, and switch > shmem over to use it. > > Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: Rik van Riel <riel@redhat.com>
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