From: Shaohua Li <[email protected]> add helper for writeprotect check. Will use it later.
Cc: Andrea Arcangeli <[email protected]> Cc: Pavel Emelyanov <[email protected]> Cc: Rik van Riel <[email protected]> Cc: Kirill A. Shutemov <[email protected]> Cc: Mel Gorman <[email protected]> Cc: Hugh Dickins <[email protected]> Cc: Johannes Weiner <[email protected]> Signed-off-by: Shaohua Li <[email protected]> Signed-off-by: Andrea Arcangeli <[email protected]> Signed-off-by: Peter Xu <[email protected]> --- include/linux/userfaultfd_k.h | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/include/linux/userfaultfd_k.h b/include/linux/userfaultfd_k.h index 37c9eba75c98..38f748e7186e 100644 --- a/include/linux/userfaultfd_k.h +++ b/include/linux/userfaultfd_k.h @@ -50,6 +50,11 @@ static inline bool userfaultfd_missing(struct vm_area_struct *vma) return vma->vm_flags & VM_UFFD_MISSING; } +static inline bool userfaultfd_wp(struct vm_area_struct *vma) +{ + return vma->vm_flags & VM_UFFD_WP; +} + static inline bool userfaultfd_armed(struct vm_area_struct *vma) { return vma->vm_flags & (VM_UFFD_MISSING | VM_UFFD_WP); @@ -94,6 +99,11 @@ static inline bool userfaultfd_missing(struct vm_area_struct *vma) return false; } +static inline bool userfaultfd_wp(struct vm_area_struct *vma) +{ + return false; +} + static inline bool userfaultfd_armed(struct vm_area_struct *vma) { return false; -- 2.17.1
