From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752029AbdA3GRg (ORCPT ); Mon, 30 Jan 2017 01:17:36 -0500 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:35662 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1750796AbdA3GR3 (ORCPT ); Mon, 30 Jan 2017 01:17:29 -0500 From: Anshuman Khandual To: linux-kernel@vger.kernel.org, linux-mm@kvack.org Cc: mhocko@suse.com, vbabka@suse.cz, mgorman@suse.de, minchan@kernel.org, aneesh.kumar@linux.vnet.ibm.com, bsingharora@gmail.com, srikar@linux.vnet.ibm.com, haren@linux.vnet.ibm.com, jglisse@redhat.com, dave.hansen@intel.com, dan.j.williams@intel.com Subject: [RFC V2 12/12] mm: Tag VMA with VM_CDM flag explicitly during mbind(MPOL_BIND) Date: Mon, 30 Jan 2017 09:05:53 +0530 X-Mailer: git-send-email 2.9.3 In-Reply-To: <20170130033602.12275-1-khandual@linux.vnet.ibm.com> References: <20170130033602.12275-1-khandual@linux.vnet.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 17013003-1617-0000-0000-000001A22340 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17013003-1618-0000-0000-000047A42399 Message-Id: <20170130033602.12275-13-khandual@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2017-01-30_02:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1612050000 definitions=main-1701300038 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Mark all the applicable VMAs with VM_CDM explicitly during mbind(MPOL_BIND) call if the user provided nodemask has a CDM node. Signed-off-by: Anshuman Khandual --- mm/mempolicy.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/mm/mempolicy.c b/mm/mempolicy.c index 78e095b..4482140 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -175,6 +175,16 @@ static void mpol_relative_nodemask(nodemask_t *ret, const nodemask_t *orig, } #ifdef CONFIG_COHERENT_DEVICE +static inline void set_vm_cdm(struct vm_area_struct *vma) +{ + vma->vm_flags |= VM_CDM; +} + +static inline void clr_vm_cdm(struct vm_area_struct *vma) +{ + vma->vm_flags &= ~VM_CDM; +} + static void mark_vma_cdm(nodemask_t *nmask, struct page *page, struct vm_area_struct *vma) { @@ -191,6 +201,9 @@ static void mark_vma_cdm(nodemask_t *nmask, vma->vm_flags |= VM_CDM; } #else +static inline void set_vm_cdm(struct vm_area_struct *vma) { } +static inline void clr_vm_cdm(struct vm_area_struct *vma) { } + static void mark_vma_cdm(nodemask_t *nmask, struct page *page, struct vm_area_struct *vma) { @@ -770,6 +783,10 @@ static int mbind_range(struct mm_struct *mm, unsigned long start, vmstart = max(start, vma->vm_start); vmend = min(end, vma->vm_end); + if ((new_pol->mode == MPOL_BIND) + && nodemask_has_cdm(new_pol->v.nodes)) + set_vm_cdm(vma); + if (mpol_equal(vma_policy(vma), new_pol)) continue; -- 2.9.3