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McKenney" , Matthew Wilcox , David Rientjes , Axel Rasmussen , Suren Baghdasaryan , Vlastimil Babka , Rik van Riel , Peter Zijlstra Subject: [PATCH v3 28/66] arch/powerpc: Remove mmap linked list from mm/book3s64/subpage_prot Thread-Topic: [PATCH v3 28/66] arch/powerpc: Remove mmap linked list from mm/book3s64/subpage_prot Thread-Index: AQHXuYiglqQXXwqiukCfNldaHT02TA== Date: Tue, 5 Oct 2021 01:30:48 +0000 Message-ID: <20211005012959.1110504-29-Liam.Howlett@oracle.com> References: <20211005012959.1110504-1-Liam.Howlett@oracle.com> In-Reply-To: <20211005012959.1110504-1-Liam.Howlett@oracle.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: git-send-email 2.30.2 authentication-results: lists.infradead.org; dkim=none (message not signed) header.d=none;lists.infradead.org; dmarc=none action=none header.from=oracle.com; x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 8be8cd2a-0635-425d-1ebc-08d9879fc2c8 x-ms-traffictypediagnostic: BLAPR10MB5044: x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:5236; 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charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: oracle.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: BL0PR10MB3011.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 8be8cd2a-0635-425d-1ebc-08d9879fc2c8 X-MS-Exchange-CrossTenant-originalarrivaltime: 05 Oct 2021 01:30:48.5881 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 4e2c6054-71cb-48f1-bd6c-3a9705aca71b X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: A+N3lKV4w7c5OXfyk6kPD7oIRIFdjmnWkisxw+IwxE1YrSvfTw0XB4dIPb3eigYZg4OB41VWyWoskMYR5vmpSw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: BLAPR10MB5044 X-Proofpoint-Virus-Version: vendor=nai engine=6300 definitions=10127 signatures=668683 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 adultscore=0 phishscore=0 malwarescore=0 bulkscore=0 mlxlogscore=999 mlxscore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2109230001 definitions=main-2110050007 X-Proofpoint-ORIG-GUID: hnz9_p-SMfH7CCY4YYL7zKbzTjSUNGai X-Proofpoint-GUID: hnz9_p-SMfH7CCY4YYL7zKbzTjSUNGai Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: "Liam R. Howlett" Start using the maple tree Signed-off-by: Liam R. Howlett --- arch/powerpc/mm/book3s64/subpage_prot.c | 15 ++++----------- 1 file changed, 4 insertions(+), 11 deletions(-) diff --git a/arch/powerpc/mm/book3s64/subpage_prot.c b/arch/powerpc/mm/book= 3s64/subpage_prot.c index 60c6ea16a972..51722199408e 100644 --- a/arch/powerpc/mm/book3s64/subpage_prot.c +++ b/arch/powerpc/mm/book3s64/subpage_prot.c @@ -149,25 +149,18 @@ static void subpage_mark_vma_nohuge(struct mm_struct = *mm, unsigned long addr, unsigned long len) { struct vm_area_struct *vma; + MA_STATE(mas, &mm->mm_mt, addr, addr); =20 /* * We don't try too hard, we just mark all the vma in that range * VM_NOHUGEPAGE and split them. */ - vma =3D find_vma(mm, addr); - /* - * If the range is in unmapped range, just return - */ - if (vma && ((addr + len) <=3D vma->vm_start)) - return; - - while (vma) { - if (vma->vm_start >=3D (addr + len)) - break; + rcu_read_lock(); + mas_for_each(&mas, vma, addr + len) { vma->vm_flags |=3D VM_NOHUGEPAGE; walk_page_vma(vma, &subpage_walk_ops, NULL); - vma =3D vma->vm_next; } + rcu_read_unlock(); } #else static void subpage_mark_vma_nohuge(struct mm_struct *mm, unsigned long ad= dr, --=20 2.30.2