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Shutemov" , Maya Gokhale , Johannes Weiner , Marty McFadden , Denis Plotnikov , Hugh Dickins , "Dr . David Alan Gilbert" , Jerome Glisse , Shaohua Li , Pavel Emelyanov , Rik van Riel Subject: [PATCH v6 01/19] userfaultfd: wp: add helper for writeprotect check Date: Thu, 20 Feb 2020 11:30:54 -0500 Message-Id: <20200220163112.11409-2-peterx@redhat.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200220163112.11409-1-peterx@redhat.com> References: <20200220163112.11409-1-peterx@redhat.com> MIME-Version: 1.0 X-MC-Unique: 3jO7Jxk5M4Ozj3Xcqb992Q-1 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: From: Shaohua Li add helper for writeprotect check. Will use it later. Cc: Andrea Arcangeli Cc: Pavel Emelyanov Cc: Rik van Riel Cc: Kirill A. Shutemov Cc: Mel Gorman Cc: Hugh Dickins Cc: Johannes Weiner Signed-off-by: Shaohua Li Signed-off-by: Andrea Arcangeli Reviewed-by: Jerome Glisse Reviewed-by: Mike Rapoport Signed-off-by: Peter Xu --- 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 ac9d71e24b81..5dc247af0f2e 100644 --- a/include/linux/userfaultfd_k.h +++ b/include/linux/userfaultfd_k.h @@ -52,6 +52,11 @@ static inline bool userfaultfd_missing(struct vm_area_st= ruct *vma) =09return vma->vm_flags & VM_UFFD_MISSING; } =20 +static inline bool userfaultfd_wp(struct vm_area_struct *vma) +{ +=09return vma->vm_flags & VM_UFFD_WP; +} + static inline bool userfaultfd_armed(struct vm_area_struct *vma) { =09return vma->vm_flags & (VM_UFFD_MISSING | VM_UFFD_WP); @@ -96,6 +101,11 @@ static inline bool userfaultfd_missing(struct vm_area_s= truct *vma) =09return false; } =20 +static inline bool userfaultfd_wp(struct vm_area_struct *vma) +{ +=09return false; +} + static inline bool userfaultfd_armed(struct vm_area_struct *vma) { =09return false; --=20 2.24.1