lkml.org 
[lkml]   [2011]   [Nov]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [PATCH 5/8] mm: compaction: avoid overwork in migrate sync mode
    On 11/19/2011 02:54 PM, Andrea Arcangeli wrote:
    > Add a lightweight sync migration (sync == 2) mode that avoids overwork
    > so more suitable to be used by compaction to provide lower latency but

    > --- a/mm/compaction.c
    > +++ b/mm/compaction.c
    > @@ -552,7 +552,7 @@ static int compact_zone(struct zone *zone, struct compact_control *cc)
    > nr_migrate = cc->nr_migratepages;
    > err = migrate_pages(&cc->migratepages, compaction_alloc,
    > (unsigned long)cc, false,
    > - cc->sync);
    > + cc->sync ? 2 : 0);

    Great idea, but it would be good if these numbers got
    a symbolic name so people trying to learn the code can
    figure it out a little easier.



    \
     
     \ /
      Last update: 2011-11-21 23:03    [W:0.019 / U:62.516 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site