>> --- >> include/linux/ksm.h | 6 ++++++ >> mm/ksm.c | 5 +++-- >> 2 files changed, 9 insertions(+), 2 deletions(-) >> >> diff --git a/include/linux/ksm.h b/include/linux/ksm.h >> index 899a314bc487..7989200cdbb7 100644 >> --- a/include/linux/ksm.h >> +++ b/include/linux/ksm.h >> @@ -26,6 +26,9 @@ int ksm_disable(struct mm_struct *mm); >> >> int __ksm_enter(struct mm_struct *mm); >> void __ksm_exit(struct mm_struct *mm); >> +/* use pte_mkdirty to track a KSM-placed zero page */ >> +#define set_pte_ksm_zero(pte) pte_mkdirty(pte_mkspecial(pte)) > >If there is only a single user (which I assume), please inline it instead. Excuse me, I'm wondering why using inline here instead of macro is better. Thanks! :) Thanks for reviews.