[PATCH v2] mm/compaction:let proactive compaction order configurable

y user, and the default value is still COMPACTION_HPAGE_ORDER. Signed-off-by: chukaiping Reported-by: kernel test robot --- Changes in v2: - fix the compile error in ia64 and powerpc - change the hard coded max order number from 10 to MAX_ORDER - 1 include/linux/compaction.h |1 +

[PATCH] mm/compaction:let proactive compaction order configurable

y user, and the default value is still COMPACTION_HPAGE_ORDER. Signed-off-by: chukaiping --- include/linux/compaction.h |1 + kernel/sysctl.c| 10 ++ mm/compaction.c|7 --- 3 files changed, 15 insertions(+), 3 deletions(-) diff --git a/include/linux