Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:7 as permitted sender) client-ip=2620:137:e000::3:7;
From:   Christophe Leroy <christophe.leroy@csgroup.eu>
To:     Ryan Roberts <ryan.roberts@arm.com>, Peter Xu <peterx@redhat.com>
CC:     Matthew Wilcox <willy@infradead.org>,
        Christoph Hellwig <hch@infradead.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "linux-mm@kvack.org" <linux-mm@kvack.org>,
        Andrea Arcangeli <aarcange@redhat.com>,
        James Houghton <jthoughton@google.com>,
        Lorenzo Stoakes <lstoakes@gmail.com>,
        David Hildenbrand <david@redhat.com>,
        Vlastimil Babka <vbabka@suse.cz>,
        John Hubbard <jhubbard@nvidia.com>,
        Yang Shi <shy828301@gmail.com>,
        Rik van Riel <riel@surriel.com>,
        Hugh Dickins <hughd@google.com>,
        Jason Gunthorpe <jgg@nvidia.com>,
        Axel Rasmussen <axelrasmussen@google.com>,
        "Kirill A . Shutemov" <kirill@shutemov.name>,
        Andrew Morton <akpm@linux-foundation.org>,
        "linuxppc-dev@lists.ozlabs.org" <linuxppc-dev@lists.ozlabs.org>,
        Mike Rapoport <rppt@kernel.org>,
        Mike Kravetz <mike.kravetz@oracle.com>
Subject: Re: [PATCH RFC 06/12] mm/gup: Drop folio_fast_pin_allowed() in hugepd
 processing
Thread-Topic: [PATCH RFC 06/12] mm/gup: Drop folio_fast_pin_allowed() in
 hugepd processing
Thread-Index: AQHaGCxakejDChMrKU+uwfinjAsKCLCC5iYAgAIQ84CAAQxzAIACFO2AgAAaXYCAAB5+gIAACegAgADfT4CAAHXcgIAJyEQAgAQxj4CAAWqrAIAAA94AgAAF/ICAAAMjgA==
Date:   Mon, 4 Dec 2023 11:57:55 +0000
Message-ID: <8c7fe945-ee34-4eb6-b466-5707660c7723@csgroup.eu>
References: <20231116012908.392077-7-peterx@redhat.com>
 <ZVsYMMJpmFV2T/Zc@infradead.org> <ZVzT5_3Zn-Y-6xth@x1n>
 <ZV21GCbG48nTLDzn@infradead.org> <ZV90JcnQ1RGud/0R@casper.infradead.org>
 <ZV-KQ0e0y9BTsHGv@x1n> <d2313c1d-1e50-49b7-bed7-840431af799a@arm.com>
 <ZV-sJsdFfXiCkylv@x1n> <510adc26-9aed-4745-8807-dba071fadbbe@arm.com>
 <ZWDKV0XNjplc_vUP@x1n> <ZWj_EgljG3NwS5r1@x1n>
 <283da12c-14f1-4255-b3c4-ab933f3373c4@csgroup.eu>
 <01aad92f-b1e0-4f31-b905-8b1c2012ebab@arm.com>
 <97c21205-f3e6-4634-82e6-c7bbd81d1835@csgroup.eu>
 <0c446883-7f01-406f-bddd-8e78b989d644@arm.com>
In-Reply-To: <0c446883-7f01-406f-bddd-8e78b989d644@arm.com>
Accept-Language: fr-FR, en-US
Content-Language: fr-FR
user-agent: Mozilla Thunderbird
x-ms-exchange-antispam-messagedata-chunkcount: 1
x-ms-exchange-antispam-messagedata-0: =?utf-8?B?T0YySkZHTVNCK3F2eFdzaldVWnpyeWJSd2hGbWdPek9nMFpJR3RoUG4rS0Ey?=
 =?utf-8?B?S1JaRU52cVBYS3VTUlBUcy9ReWJUTnIyVG1qRWRnejRSd2VMbW5tcHRFYUhS?=
 =?utf-8?B?V01lNHFodHpOYm5DYzNmbloyNy9UOGVzOE9EU253UitUdzkzaG0wUWxsVENX?=
 =?utf-8?B?NExYdlJGenA2QllTWmxtSmIyUVlyc1dXMW01OUwrK1NpUFJYeWc0QjUvK1Jh?=
 =?utf-8?B?dEluc2tpZmExanJyd3BLRm5kTURNMmlxQnZIN0VyOUpuTlZNMVkyS0pWb2ln?=
 =?utf-8?B?Y0VuSHhIZkJHRGEyRkxTT3RKem9hclh4Nko1c2Yxb21EcndWUnY5U0NGNUVn?=
 =?utf-8?B?Ni9NZEtJdEtucHBhU1R1azNvcWxVZWFNRzN1MG9QMDNkbzJrVGdHSlZhTytW?=
 =?utf-8?B?ZVdFaDcrcFIzSXdxdW0xbGptcEZ2Z01ENk5nREUwajNaZ05vM1ZUMThqa1F5?=
 =?utf-8?B?MkhyNTlKbkIvV2RLMmtJemhGY0poSERZc3pwd2ZBRjJMN2lzd3dEaHJmM0E3?=
 =?utf-8?B?c0psMzJ2eXlINzVSWllXVThkQ1RPbXJoYW9FbGJrM05US2MrZEtGcjFrUDZD?=
 =?utf-8?B?UTJNdVZqZ3lvWUx2bll1Smd0dWplb2Jrd0lqZXNjWFlGSittSmRYK1REc2xl?=
 =?utf-8?B?enQ2Qi9RYW9IclhRSWlIWkl0SC9TWDY4eGN3UUJFblZUSVdHN0JmSWFCMnpY?=
 =?utf-8?B?d2EyQllabVhYOTY4S3E0Q2NmQURCdVFDTzg5dUFTbHZtb2FWTnMrUE5maHN0?=
 =?utf-8?B?WWRMZkRLSWhGcFlRYzM0TEFueENodmU1NHgrTjRxT3Y3WDZ2aThLWU1Wd3Js?=
 =?utf-8?B?YzR2VDNNN0FCK3RnK05wbHpKTVRVNUI5czJ0bUhzeTNiY2pScXpmSFZtQ3p2?=
 =?utf-8?B?NEJ6d1ZlUzErZm1TeXNNU2FCMUFESFFXM0dlZExDTC9ubzJWRFBsZlFMVlRk?=
 =?utf-8?B?cDczMC9kRHIzWEYxdW1GVVNtOFhLZEtObm5CV2p6dTA1WnFjeUhiNU1oM3lL?=
 =?utf-8?B?bVBmRk9LY2w0V01NYkhNdXd2SExTVHNFM1VVeEpmZzk4bDU0V1N2SEtrVjNa?=
 =?utf-8?B?L0dEdExTaWVpSGw4UHBaMlBjRHVpbVNHU1MweURadWJsYjRMUUZ0cVJFd1BQ?=
 =?utf-8?B?QkkwOFZKSGx2dXRHK3phL0lFckpRREVZMGtiQU83d1huTDk1dHF5SkdBRHk4?=
 =?utf-8?B?WUh1V2NNVFdKRXJMMHE0L1FadXNQL1JJMXhyZk9hZXdUK0Jtc0t2WlJpY20y?=
 =?utf-8?B?RXcvMTdUQ0Fxc2lrbFd0R1JobnpsbHpNQmYyekxYeUc1Z2RXQVArYWFycCtq?=
 =?utf-8?B?cVU5MmVlYkM3TjJDYnlOemNkTnRLZnJCRmd4Ym50R2owZ2gvOS9ydC9WYnlF?=
 =?utf-8?B?M29HREpIREVUVHFxdFhqSzJ3SWFJZjVIOGZRV3dTRFg3TGRiNlNNbC8ydWJv?=
 =?utf-8?B?OFVvWE1YUzdkRm53cDEycWs5K3pkK1VZd1RlOE81MmhyOEFGVEYwWU53NlFm?=
 =?utf-8?B?SGJOTU5uT0NPNVdVRUZ5VkZFV1JXUlJ5dm16R08rSlpJS0J6Rlc3OGs5MlNT?=
 =?utf-8?B?bHpJZnh3ZFpXKytEdldKTnRrM3U0TGVoMWxMa0xPWTFYTVVXWTNlU09UQ0pk?=
 =?utf-8?B?QmZkbndCSjB2cWdITDZEVm1Gc1NmM1ZjL0xCK0JLNDl0RGY0cVR4VzBMbU9q?=
 =?utf-8?B?WFFza2V0ME1NMXBSUHJQRUxjb0tNcnhkK3FsWEhCayt0QVIrTGY0Nm02Z1Rk?=
 =?utf-8?B?RGVVSTFDWXA0aTZWUmJBdGFNRnd0T2NHM25YRFE3VTdieHgyN3lHdk9RZnZq?=
 =?utf-8?B?amMxVmY5VXl3aE56ZDJnQmV6MWE3aUhMOCtvcXFtSEFvTmIybmpjam45VWYv?=
 =?utf-8?B?RXh4NkFjM0YvMmhkVDZBNWdiYXpjMFg4YXNKUkh0R2Naa2RLbldId0pjQStT?=
 =?utf-8?B?MFFlUnlTc2phZjEyRy9tOGMyeWhnT25FQVJDMTRPVW9Xby9WY0RhS3B6dTJD?=
 =?utf-8?B?dG5xU1F4SUxQVExoZTRZMnFySUROcmQ1R01Yd3ZtajhXNWRMWDB5YzgrT2xr?=
 =?utf-8?B?UjVneWJBRkxXODE3Qkx0dDh3NWtKenJTeXB3eDIzdGt6ZmZPUGdLdlZESUVm?=
 =?utf-8?Q?C82E48yI/DLCPcXYDrIMmwNlK?=
Content-Type: text/plain; charset="utf-8"
Content-ID: <A9DB4615981B6C44AEF96EF49FE31A07@FRAP264.PROD.OUTLOOK.COM>
Content-Transfer-Encoding: base64
MIME-Version: 1.0
X-OriginatorOrg: csgroup.eu
X-MS-Exchange-CrossTenant-AuthAs: Internal
X-MS-Exchange-CrossTenant-AuthSource: MRZP264MB2988.FRAP264.PROD.OUTLOOK.COM
X-MS-Exchange-CrossTenant-Network-Message-Id: fd33d1cf-50ca-4551-b901-08dbf4c040a5
X-MS-Exchange-CrossTenant-originalarrivaltime: 04 Dec 2023 11:57:55.8087
 (UTC)
X-MS-Exchange-CrossTenant-fromentityheader: Hosted
X-MS-Exchange-CrossTenant-id: 9914def7-b676-4fda-8815-5d49fb3b45c8
X-MS-Exchange-CrossTenant-mailboxtype: HOSTED
X-MS-Exchange-CrossTenant-userprincipalname: 2eXlFuXtMKzpcQvJEmbmWuNo216OjyntKaMpRHwLLW+kd7VeZe0lnBtQciB92j8LD201eOq7RgxtNBFn3OObpWGF2/RABd1QWTX/jttrmA8=
X-MS-Exchange-Transport-CrossTenantHeadersStamped: PR1P264MB2207
X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED,
        DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_BLOCKED,
        RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,SPF_PASS,T_SCC_BODY_TEXT_LINE
        autolearn=ham autolearn_force=no version=3.4.6
X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on
        lindbergh.monkeyblade.net
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org
X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (snail.vger.email [0.0.0.0]); Mon, 04 Dec 2023 04:00:03 -0800 (PST)
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