From: Andrea Arcangeli <aarcange@xxxxxxxxxx> With transparent hugepage support we need compaction for the "defrag" sysfs controls to be effective. Signed-off-by: Andrea Arcangeli <aarcange@xxxxxxxxxx> --- diff --git a/mm/Kconfig b/mm/Kconfig --- a/mm/Kconfig +++ b/mm/Kconfig @@ -305,6 +305,7 @@ config NOMMU_INITIAL_TRIM_EXCESS config TRANSPARENT_HUGEPAGE bool "Transparent Hugepage Support" depends on X86 && MMU + select COMPACTION help Transparent Hugepages allows the kernel to use huge pages and huge tlb transparently to the applications whenever possible. -- 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>