| Message ID | 20190212025632.28946-7-peterx@redhat.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | userfaultfd: write protection support | expand |
On Tue, Feb 12, 2019 at 10:56:12AM +0800, Peter Xu wrote: > From: Shaohua Li <shli@fb.com> > > add helper for writeprotect check. Will use it later. > > Cc: Andrea Arcangeli <aarcange@redhat.com> > Cc: Pavel Emelyanov <xemul@parallels.com> > Cc: Rik van Riel <riel@redhat.com> > Cc: Kirill A. Shutemov <kirill@shutemov.name> > Cc: Mel Gorman <mgorman@suse.de> > Cc: Hugh Dickins <hughd@google.com> > Cc: Johannes Weiner <hannes@cmpxchg.org> > Signed-off-by: Shaohua Li <shli@fb.com> > Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> > Signed-off-by: Peter Xu <peterx@redhat.com> Reviewed-by: Jérôme Glisse <jglisse@redhat.com> > --- > 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 >
On Tue, Feb 12, 2019 at 10:56:12AM +0800, Peter Xu wrote: > From: Shaohua Li <shli@fb.com> > > add helper for writeprotect check. Will use it later. > > Cc: Andrea Arcangeli <aarcange@redhat.com> > Cc: Pavel Emelyanov <xemul@parallels.com> > Cc: Rik van Riel <riel@redhat.com> > Cc: Kirill A. Shutemov <kirill@shutemov.name> > Cc: Mel Gorman <mgorman@suse.de> > Cc: Hugh Dickins <hughd@google.com> > Cc: Johannes Weiner <hannes@cmpxchg.org> > Signed-off-by: Shaohua Li <shli@fb.com> > Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> > Signed-off-by: Peter Xu <peterx@redhat.com> Reviewed-by: Mike Rapoport <rppt@linux.ibm.com> > --- > 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 >
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;