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McKenney" , Matthew Wilcox , Laurent Dufour , David Rientjes , Axel Rasmussen , Suren Baghdasaryan , Vlastimil Babka , Rik van Riel , Peter Zijlstra , Michel Lespinasse Subject: Re: [PATCH 94/94] mm: Move mas locking outside of munmap() path. Thread-Topic: [PATCH 94/94] mm: Move mas locking outside of munmap() path. 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charset="us-ascii" Content-ID: Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: oracle.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: MWHPR10MB1582.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: cc9027ac-f2d1-4427-81eb-08d90e4d39a8 X-MS-Exchange-CrossTenant-originalarrivaltime: 03 May 2021 16:05:09.0331 (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: kHzlVpd2I6Uo0nvpdb/Khkngz5soadId5ew07IzUsK+40bFsDLLL3XfWlQ2tSruuL0onggsIXyVOr151/zlgrg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: CO1PR10MB4674 X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=9973 signatures=668683 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 adultscore=0 bulkscore=0 phishscore=0 malwarescore=0 suspectscore=0 mlxscore=0 spamscore=0 mlxlogscore=847 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2104060000 definitions=main-2105030107 X-Proofpoint-ORIG-GUID: l6ZdxoziG_VGP38fZm6eJZ2zZaCwf5LY X-Proofpoint-GUID: l6ZdxoziG_VGP38fZm6eJZ2zZaCwf5LY X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=9973 signatures=668683 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 clxscore=1015 spamscore=0 mlxscore=0 phishscore=0 adultscore=0 lowpriorityscore=0 suspectscore=0 priorityscore=1501 mlxlogscore=999 malwarescore=0 impostorscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2104060000 definitions=main-2105030107 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Michel Lespinasse [210501 02:13]: > On Wed, Apr 28, 2021 at 03:36:32PM +0000, Liam Howlett wrote: > > Now that there is a split variant that allows splitting to use a maple = state, > > move the locks to a more logical position. >=20 > In this patch set, is the maple tree lock ever held outside of code > sections already protected by the mmap write lock ? No, the maple tree lock is a currently a subset of the mmap write lock. Thanks, Liam=