On Wed, Oct 29, 2014 at 05:35:17PM +0100, Andrea Arcangeli wrote: > Some caller (like KVM) may want to set the gup_flags like > FOLL_HWPOSION to get a proper -EHWPOSION retval instead of -EFAULT to > take a more appropriate action if get_user_pages runs into a memory > failure. > > Signed-off-by: Andrea Arcangeli <aarcange@xxxxxxxxxx> > --- > include/linux/mm.h | 4 ++++ > mm/gup.c | 44 ++++++++++++++++++++++++++++++++------------ > mm/nommu.c | 16 +++++++++++++--- > 3 files changed, 49 insertions(+), 15 deletions(-) > > diff --git a/include/linux/mm.h b/include/linux/mm.h > index 99831d9..9a5ada3 100644 > --- a/include/linux/mm.h > +++ b/include/linux/mm.h > @@ -1222,6 +1222,10 @@ long get_user_pages_locked(struct task_struct *tsk, struct mm_struct *mm, > unsigned long start, unsigned long nr_pages, > int write, int force, struct page **pages, > int *locked); > +long __get_user_pages_unlocked(struct task_struct *tsk, struct mm_struct *mm, > + unsigned long start, unsigned long nr_pages, > + int write, int force, struct page **pages, > + unsigned int gup_flags); > long get_user_pages_unlocked(struct task_struct *tsk, struct mm_struct *mm, > unsigned long start, unsigned long nr_pages, > int write, int force, struct page **pages); > diff --git a/mm/gup.c b/mm/gup.c > index a8521f1..01534ff 100644 > --- a/mm/gup.c > +++ b/mm/gup.c > @@ -591,9 +591,9 @@ static __always_inline long __get_user_pages_locked(struct task_struct *tsk, > int write, int force, > struct page **pages, > struct vm_area_struct **vmas, > - int *locked, bool notify_drop) > + int *locked, bool notify_drop, > + unsigned int flags) Argument list getting too long. Should we consider packing them into a struct? -- Kirill A. Shutemov -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>