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    SubjectRe: RFT: updatedb "morning after" problem [was: Re: -mm merge plans for 2.6.23]
    On Fri, Jul 27, 2007 at 01:47:49AM -0700, Andrew Morton wrote:
    > What I think is killing us here is the blockdev pagecache: the pagecache
    > which backs those directory entries and inodes. These pages get read
    > multiple times because they hold multiple directory entries and multiple
    > inodes. These multiple touches will put those pages onto the active list
    > so they stick around for a long time and everything else gets evicted.

    I wonder what happens if you try that on ext2. There we'd get directory
    contents in per-directory page cache, so the picture might change...
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