[lkml]   [2009]   [May]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: [PATCH -mm] vmscan: make mapped executable pages the first class citizen
    > side effects
    > ------------
    > This patch is safe in general, it restores the pre-2.6.28 mmap() behavior
    > but in a much smaller and well targeted scope.
    > One may worry about some one to abuse the PROT_EXEC heuristic. But as
    > Andrew Morton stated, there are other tricks to getting that sort of boost.
    > Another concern is the PROT_EXEC mapped pages growing large in rare cases,
    > and therefore hurting reclaim efficiency. But a sane application targeted for
    > large audience will never use PROT_EXEC for data mappings. If some home made
    > application tries to abuse that bit, it shall be aware of the consequences,
    > which won't be disastrous even in the worst case.

    ok, I lose.
    if you can post good mesurement result, I'll ack this.

     \ /
      Last update: 2009-05-12 05:03    [W:0.020 / U:1.784 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site