[lkml]   [2009]   [Aug]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: [PATCH 4/12] ksm: break cow once unshared
    Hugh Dickins wrote:
    > We kept agreeing not to bother about the unswappable shared KSM pages
    > which later become unshared by others: observation suggests they're not
    > a significant proportion. But they are disadvantageous, and it is easier
    > to break COW to replace them by swappable pages, than offer statistics
    > to show that they don't matter; then we can stop worrying about them.
    > Doing this in ksm_do_scan, they don't go through cmp_and_merge_page on
    > this pass: give them a good chance of getting into the unstable tree
    > on the next pass, or back into the stable, by computing checksum now.
    > Signed-off-by: Hugh Dickins <>
    > ---

     \ /
      Last update: 2009-08-03 18:05    [W:0.030 / U:16.228 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site