Re: [patch 4/9] mm: filemap: move radix tree hole searching here

[Minchan Kim]

On Fri, Jan 10, 2014 at 01:10:38PM -0500, 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@xxxxxxxxxxx>
Reviewed-by: Minchan Kim <minchan@xxxxxxxxxx>

-- 
Kind regards,
Minchan Kim
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