lkml.org 
[lkml]   [2012]   [May]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [patch 1/5] mm: readahead: move radix tree hole searching here
    On 05/01/2012 04:41 AM, Johannes Weiner wrote:
    > The readahead code searches the page cache for non-present pages, or
    > holes, to get a picture of the area surrounding a fault e.g.
    >
    > For this it sufficed to rely on the radix tree definition of holes,
    > which is "empty tree slot". This is about to change, though, because
    > shadow page descriptors will be stored in the page cache when the real
    > pages get evicted from memory.
    >
    > Fortunately, nobody outside the readahead code uses these functions
    > and they have no internal knowledge of the radix tree structures, so
    > just move them over to mm/readahead.c 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


    \
     
     \ /
      Last update: 2012-05-01 23:41    [W:0.035 / U:62.896 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site