From: Andrea Arcangeli <aarcange@xxxxxxxxxx> With memory compaction in, and lumpy-reclaim removed, 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@xxxxxxxxxx> --- diff --git a/mm/huge_memory.c b/mm/huge_memory.c --- 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 */ -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom policy in Canada: sign http://dissolvethecrtc.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>