From d39d33c332c611094f84cee39715866f4cbf79e2 Mon Sep 17 00:00:00 2001 From: Andrea Arcangeli <aarcange@redhat.com> Date: Thu, 13 Jan 2011 15:47:05 -0800 Subject: [PATCH] thp: enable direct defrag With memory compaction in, and lumpy-reclaim disabled, it seems safe enough to defrag memory during the (synchronous) transparent hugepage page faults (TRANSPARENT_HUGEPAGE_DEFRAG_FLAG) and not only during khugepaged (async) hugepage allocations that was already enabled even before memory compaction was in (TRANSPARENT_HUGEPAGE_DEFRAG_KHUGEPAGED_FLAG). Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> Acked-by: Mel Gorman <mel@csn.ul.ie> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> --- mm/huge_memory.c | 1 + 1 file changed, 1 insertion(+) diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 4ed97a2a115f5..0415a83afd66c 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -28,6 +28,7 @@ */ unsigned long transparent_hugepage_flags __read_mostly = (1<<TRANSPARENT_HUGEPAGE_FLAG)| + (1<<TRANSPARENT_HUGEPAGE_DEFRAG_FLAG)| (1<<TRANSPARENT_HUGEPAGE_DEFRAG_KHUGEPAGED_FLAG); /* default scan 8*512 pte (or vmas) every 30 second */ -- 2.30.2