| Date | Fri, 10 Jan 2014 14:22:51 -0500 | From | Rik van Riel <> | Subject | Re: [patch 4/9] mm: filemap: move radix tree hole searching here |
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On 01/10/2014 01:10 PM, Johannes Weiner wrote: > The radix tree hole searching code is only used for page cache, for > example the readahead code trying to get a a picture of the area > surrounding a fault. > > It sufficed to rely on the radix tree definition of holes, which is > "empty tree slot". But this is about to change, though, as shadow > page descriptors will be stored in the page cache after the actual > pages get evicted from memory. > > Move the functions over to mm/filemap.c and make them native page > cache operations, where they can later be adapted to handle the new > definition of "page cache hole". > > Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: Rik van Riel <riel@redhat.com>
-- All rights reversed
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