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Fri, 9 Sep 2022 13:35:53 GMT Received: from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 7093642047; Fri, 9 Sep 2022 13:35:29 +0000 (GMT) Received: from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id EEFF14203F; Fri, 9 Sep 2022 13:35:27 +0000 (GMT) Received: from [9.145.83.17] (unknown [9.145.83.17]) by d06av24.portsmouth.uk.ibm.com (Postfix) with ESMTP; Fri, 9 Sep 2022 13:35:27 +0000 (GMT) Message-ID: <7fcc871c-fcc2-e993-fe88-f0da49ff227a@linux.ibm.com> Date: Fri, 9 Sep 2022 15:35:27 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:102.0) Gecko/20100101 Thunderbird/102.2.1 Subject: Re: [RFC PATCH RESEND 14/28] mm: mark VMAs as locked before isolating them Content-Language: fr To: Suren Baghdasaryan , akpm@linux-foundation.org Cc: michel@lespinasse.org, jglisse@google.com, mhocko@suse.com, vbabka@suse.cz, hannes@cmpxchg.org, mgorman@suse.de, dave@stgolabs.net, willy@infradead.org, liam.howlett@oracle.com, peterz@infradead.org, laurent.dufour@fr.ibm.com, paulmck@kernel.org, luto@kernel.org, songliubraving@fb.com, peterx@redhat.com, david@redhat.com, dhowells@redhat.com, hughd@google.com, bigeasy@linutronix.de, kent.overstreet@linux.dev, rientjes@google.com, axelrasmussen@google.com, joelaf@google.com, minchan@google.com, kernel-team@android.com, linux-mm@kvack.org, linux-arm-kernel@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, x86@kernel.org, linux-kernel@vger.kernel.org References: <20220901173516.702122-1-surenb@google.com> <20220901173516.702122-15-surenb@google.com> From: Laurent Dufour In-Reply-To: <20220901173516.702122-15-surenb@google.com> X-TM-AS-GCONF: 00 X-Proofpoint-GUID: 0KecVJz831Cuz_-X5Ig4InH-HLRsZ-Pd X-Proofpoint-ORIG-GUID: 9jojeoe4RfU5Q7JxugN35FnBK9tZpSK6 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.895,Hydra:6.0.528,FMLib:17.11.122.1 definitions=2022-09-09_08,2022-09-09_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 mlxlogscore=943 spamscore=0 mlxscore=0 impostorscore=0 bulkscore=0 malwarescore=0 adultscore=0 priorityscore=1501 clxscore=1015 lowpriorityscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2207270000 definitions=main-2209090047 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220909_063556_349426_93FB4054 X-CRM114-Status: GOOD ( 25.07 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org TGUgMDEvMDkvMjAyMiDDoCAxOTozNSwgU3VyZW4gQmFnaGRhc2FyeWFuIGEgw6ljcml0wqA6Cj4g TWFyayBWTUFzIGFzIGxvY2tlZCBiZWZvcmUgaXNvbGF0aW5nIHRoZW0gYW5kIGNsZWFyIHRoZWly IHRyZWUgbm9kZSBzbwo+IHRoYXQgaXNvbGF0ZWQgVk1BcyBhcmUgZWFzaWx5IGlkZW50aWZpYWJs ZS4gSW4gdGhlIGxhdGVyIHBhdGNoZXMgcGFnZQo+IGZhdWx0IGhhbmRsZXJzIHdpbGwgdHJ5IGxv Y2tpbmcgdGhlIGZvdW5kIFZNQSBhbmQgd2lsbCBjaGVjayB3aGV0aGVyCj4gdGhlIFZNQSB3YXMg aXNvbGF0ZWQuIExvY2tpbmcgVk1BcyBiZWZvcmUgaXNvbGF0aW5nIHRoZW0gZW5zdXJlcyB0aGF0 Cj4gcGFnZSBmYXVsdCBoYW5kbGVycyBkb24ndCBvcGVyYXRlIG9uIGlzb2xhdGVkIFZNQXMuCgpG b3VuZCBhbm90aGVyIHBsYWNlIHdoZXJlIHRoZSBWTUEgc2hvdWxkIHByb2JhYmx5IG1hcmsgbG9j a2VkOgoqKiogZHJpdmVycy9ncHUvZHJtL2RybV92bWFfbWFuYWdlci5jOgpkcm1fdm1hX25vZGVf cmV2b2tlWzMzOF0gICAgICAgcmJfZXJhc2UoJmVudHJ5LT52bV9yYiwgJm5vZGUtPnZtX2ZpbGVz KTsKClRoZXJlIGFyZSAyIG90aGVycyBlbnRyaWVzIGluIG5vbW11LmMgYnV0IEkgZ3Vlc3MgdGhp cyBpcyBub3Qgc3VwcG9ydGVkLAppc24ndCBpdD8KCgo+IFNpZ25lZC1vZmYtYnk6IFN1cmVuIEJh Z2hkYXNhcnlhbiA8c3VyZW5iQGdvb2dsZS5jb20+Cj4gLS0tCj4gIG1tL21tYXAuYyAgfCAyICsr Cj4gIG1tL25vbW11LmMgfCAyICsrCj4gIDIgZmlsZXMgY2hhbmdlZCwgNCBpbnNlcnRpb25zKCsp Cj4gCj4gZGlmZiAtLWdpdCBhL21tL21tYXAuYyBiL21tL21tYXAuYwo+IGluZGV4IDA5NDY3OGI0 NDM0Yi4uYjBkNzhiZGMwZGUwIDEwMDY0NAo+IC0tLSBhL21tL21tYXAuYwo+ICsrKyBiL21tL21t YXAuYwo+IEBAIC00MjEsMTIgKzQyMSwxNCBAQCBzdGF0aWMgaW5saW5lIHZvaWQgdm1hX3JiX2lu c2VydChzdHJ1Y3Qgdm1fYXJlYV9zdHJ1Y3QgKnZtYSwKPiAgCj4gIHN0YXRpYyB2b2lkIF9fdm1h X3JiX2VyYXNlKHN0cnVjdCB2bV9hcmVhX3N0cnVjdCAqdm1hLCBzdHJ1Y3QgcmJfcm9vdCAqcm9v dCkKPiAgewo+ICsJdm1hX21hcmtfbG9ja2VkKHZtYSk7Cj4gIAkvKgo+ICAJICogTm90ZSByYl9l cmFzZV9hdWdtZW50ZWQgaXMgYSBmYWlybHkgbGFyZ2UgaW5saW5lIGZ1bmN0aW9uLAo+ICAJICog c28gbWFrZSBzdXJlIHdlIGluc3RhbnRpYXRlIGl0IG9ubHkgb25jZSB3aXRoIG91ciBkZXNpcmVk Cj4gIAkgKiBhdWdtZW50ZWQgcmJ0cmVlIGNhbGxiYWNrcy4KPiAgCSAqLwo+ICAJcmJfZXJhc2Vf YXVnbWVudGVkKCZ2bWEtPnZtX3JiLCByb290LCAmdm1hX2dhcF9jYWxsYmFja3MpOwo+ICsJUkJf Q0xFQVJfTk9ERSgmdm1hLT52bV9yYik7Cj4gIH0KPiAgCj4gIHN0YXRpYyBfX2Fsd2F5c19pbmxp bmUgdm9pZCB2bWFfcmJfZXJhc2VfaWdub3JlKHN0cnVjdCB2bV9hcmVhX3N0cnVjdCAqdm1hLAo+ IGRpZmYgLS1naXQgYS9tbS9ub21tdS5jIGIvbW0vbm9tbXUuYwo+IGluZGV4IGU4MTljYmMyMWIz OS4uZmY5OTMzZTU3NTAxIDEwMDY0NAo+IC0tLSBhL21tL25vbW11LmMKPiArKysgYi9tbS9ub21t dS5jCj4gQEAgLTYyMiw2ICs2MjIsNyBAQCBzdGF0aWMgdm9pZCBkZWxldGVfdm1hX2Zyb21fbW0o c3RydWN0IHZtX2FyZWFfc3RydWN0ICp2bWEpCj4gIAlzdHJ1Y3QgbW1fc3RydWN0ICptbSA9IHZt YS0+dm1fbW07Cj4gIAlzdHJ1Y3QgdGFza19zdHJ1Y3QgKmN1cnIgPSBjdXJyZW50Owo+ICAKPiAr CXZtYV9tYXJrX2xvY2tlZCh2bWEpOwo+ICAJbW0tPm1hcF9jb3VudC0tOwo+ICAJZm9yIChpID0g MDsgaSA8IFZNQUNBQ0hFX1NJWkU7IGkrKykgewo+ICAJCS8qIGlmIHRoZSB2bWEgaXMgY2FjaGVk LCBpbnZhbGlkYXRlIHRoZSBlbnRpcmUgY2FjaGUgKi8KPiBAQCAtNjQ0LDYgKzY0NSw3IEBAIHN0 YXRpYyB2b2lkIGRlbGV0ZV92bWFfZnJvbV9tbShzdHJ1Y3Qgdm1fYXJlYV9zdHJ1Y3QgKnZtYSkK PiAgCj4gIAkvKiByZW1vdmUgZnJvbSB0aGUgTU0ncyB0cmVlIGFuZCBsaXN0ICovCj4gIAlyYl9l cmFzZSgmdm1hLT52bV9yYiwgJm1tLT5tbV9yYik7Cj4gKwlSQl9DTEVBUl9OT0RFKCZ2bWEtPnZt X3JiKTsKPiAgCj4gIAlfX3ZtYV91bmxpbmtfbGlzdChtbSwgdm1hKTsKPiAgfQoKCl9fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmxpbnV4LWFybS1rZXJuZWwg bWFpbGluZyBsaXN0CmxpbnV4LWFybS1rZXJuZWxAbGlzdHMuaW5mcmFkZWFkLm9yZwpodHRwOi8v bGlzdHMuaW5mcmFkZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4LWFybS1rZXJuZWwK