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authorMel Gorman <mgorman@techsingularity.net>2015-11-07 03:28:12 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2015-11-07 04:50:42 +0300
commitc9ab0c4fbeb0202bac3548378a977e1536ebe3ca (patch)
tree44d92e1b08afbb47e64ec55d9ceb7704b4f0815c /mm/internal.h
parente2b19197ff9dc46f3e3888f273c4395f9e5a9856 (diff)
downloadlinux-c9ab0c4fbeb0202bac3548378a977e1536ebe3ca.tar.xz
mm, page_alloc: remove unnecessary recalculations for dirty zone balancing
File-backed pages that will be immediately written are balanced between zones. This heuristic tries to avoid having a single zone filled with recently dirtied pages but the checks are unnecessarily expensive. Move consider_zone_balanced into the alloc_context instead of checking bitmaps multiple times. The patch also gives the parameter a more meaningful name. Signed-off-by: Mel Gorman <mgorman@techsingularity.net> Acked-by: David Rientjes <rientjes@google.com> Acked-by: Michal Hocko <mhocko@suse.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Cc: Christoph Lameter <cl@linux.com> Cc: Vitaly Wool <vitalywool@gmail.com> Cc: Rik van Riel <riel@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/internal.h')
-rw-r--r--mm/internal.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/mm/internal.h b/mm/internal.h
index d4b807d6c963..ff0f1ada0f67 100644
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -129,6 +129,7 @@ struct alloc_context {
int classzone_idx;
int migratetype;
enum zone_type high_zoneidx;
+ bool spread_dirty_pages;
};
/*