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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Mon, 25 Feb 2019 15:41:55 -0000 Received: from d06av25.portsmouth.uk.ibm.com (d06av25.portsmouth.uk.ibm.com [9.149.105.61]) by b06cxnps4074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x1PFfspS4980780 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Mon, 25 Feb 2019 15:41:54 GMT Received: from d06av25.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 6BC0111C04C; Mon, 25 Feb 2019 15:41:54 +0000 (GMT) Received: from d06av25.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 7A68D11C052; Mon, 25 Feb 2019 15:41:52 +0000 (GMT) Received: from rapoport-lnx (unknown [9.148.205.26]) by d06av25.portsmouth.uk.ibm.com (Postfix) with ESMTPS; Mon, 25 Feb 2019 15:41:52 +0000 (GMT) Date: Mon, 25 Feb 2019 17:41:50 +0200 From: Mike Rapoport To: Peter Xu Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, David Hildenbrand , Hugh Dickins , Maya Gokhale , Jerome Glisse , Pavel Emelyanov , Johannes Weiner , Martin Cracauer , Shaohua Li , Marty McFadden , Andrea Arcangeli , Mike Kravetz , Denis Plotnikov , Mike Rapoport , Mel Gorman , "Kirill A . Shutemov" , "Dr . David Alan Gilbert" , Pavel Emelyanov , Rik van Riel Subject: Re: [PATCH v2 06/26] userfaultfd: wp: add helper for writeprotect check References: <20190212025632.28946-1-peterx@redhat.com> <20190212025632.28946-7-peterx@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190212025632.28946-7-peterx@redhat.com> User-Agent: Mutt/1.5.24 (2015-08-30) X-TM-AS-GCONF: 00 x-cbid: 19022515-0016-0000-0000-0000025AAE04 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19022515-0017-0000-0000-000032B50C16 Message-Id: <20190225154149.GA24917@rapoport-lnx> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-02-25_08:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1902250114 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Feb 12, 2019 at 10:56:12AM +0800, Peter Xu wrote: > 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 > Signed-off-by: Peter Xu Reviewed-by: Mike Rapoport > --- > 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 > -- Sincerely yours, Mike.