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Tue, 6 Sep 2022 16:09:59 GMT Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id E2DCCA405C; Tue, 6 Sep 2022 16:09:35 +0000 (GMT) Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 81C3AA4054; Tue, 6 Sep 2022 16:09:34 +0000 (GMT) Received: from [9.101.4.33] (unknown [9.101.4.33]) by b06wcsmtp001.portsmouth.uk.ibm.com (Postfix) with ESMTP; Tue, 6 Sep 2022 16:09:34 +0000 (GMT) Message-ID: <68e2fb35-141d-5505-766f-29afe0d61435@linux.ibm.com> Date: Tue, 6 Sep 2022 18:09:34 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:102.0) Gecko/20100101 Thunderbird/102.2.0 Subject: Re: [RFC PATCH RESEND 12/28] mm/mremap: mark VMA as locked while remapping it to a new address range 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> <20220901173516.702122-13-surenb@google.com> From: Laurent Dufour In-Reply-To: <20220901173516.702122-13-surenb@google.com> X-TM-AS-GCONF: 00 X-Proofpoint-GUID: u6aNfVLDHk7RSiY37OWL7z-spns9hXvc X-Proofpoint-ORIG-GUID: FacK01iKrdQFaKH9Z6N8UXyqjBDgIbFI 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=2022-09-06_07,2022-09-06_02,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 mlxscore=0 clxscore=1015 mlxlogscore=999 malwarescore=0 spamscore=0 impostorscore=0 phishscore=0 lowpriorityscore=0 adultscore=0 suspectscore=0 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2207270000 definitions=main-2209060075 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220906_091000_661947_B059255E X-CRM114-Status: GOOD ( 19.87 ) 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 TWFyayBWTUEgYXMgbG9ja2VkIGJlZm9yZSBjb3B5aW5nIGl0IGFuZCB3aGVuIGNvcHlfdm1hIHBy b2R1Y2VzIGEgbmV3IFZNQS4KPiAKPiBTaWduZWQtb2ZmLWJ5OiBTdXJlbiBCYWdoZGFzYXJ5YW4g PHN1cmVuYkBnb29nbGUuY29tPgo+IC0tLQo+ICBtbS9tbWFwLmMgICB8IDEgKwo+ICBtbS9tcmVt YXAuYyB8IDEgKwo+ICAyIGZpbGVzIGNoYW5nZWQsIDIgaW5zZXJ0aW9ucygrKQo+IAo+IGRpZmYg LS1naXQgYS9tbS9tbWFwLmMgYi9tbS9tbWFwLmMKPiBpbmRleCBhZGUzOTA5Yzg5YjQuLjEyMTU0 NGZkOTBkZSAxMDA2NDQKPiAtLS0gYS9tbS9tbWFwLmMKPiArKysgYi9tbS9tbWFwLmMKPiBAQCAt MzI0OCw2ICszMjQ4LDcgQEAgc3RydWN0IHZtX2FyZWFfc3RydWN0ICpjb3B5X3ZtYShzdHJ1Y3Qg dm1fYXJlYV9zdHJ1Y3QgKip2bWFwLAo+ICAJCQlnZXRfZmlsZShuZXdfdm1hLT52bV9maWxlKTsK PiAgCQlpZiAobmV3X3ZtYS0+dm1fb3BzICYmIG5ld192bWEtPnZtX29wcy0+b3BlbikKPiAgCQkJ bmV3X3ZtYS0+dm1fb3BzLT5vcGVuKG5ld192bWEpOwo+ICsJCXZtYV9tYXJrX2xvY2tlZChuZXdf dm1hKTsKPiAgCQl2bWFfbGluayhtbSwgbmV3X3ZtYSwgcHJldiwgcmJfbGluaywgcmJfcGFyZW50 KTsKPiAgCQkqbmVlZF9ybWFwX2xvY2tzID0gZmFsc2U7Cj4gIAl9CgpTb3VuZHMgZ29vZCBpbiB0 aGUgYm90aCBjYXNlIHRoZSByZXR1cm5lZCBuZXdfdm1hIGlzIGxvY2tlZCwgZWl0aGVyIGluCmNv cHlfdm1hKCkgb3IgaW4gdm1hX21lcmdlKCkuCgo+IGRpZmYgLS1naXQgYS9tbS9tcmVtYXAuYyBi L21tL21yZW1hcC5jCj4gaW5kZXggYjUyMmNkMDI1OWEwLi5iZGJmOTYyNTRlNDMgMTAwNjQ0Cj4g LS0tIGEvbW0vbXJlbWFwLmMKPiArKysgYi9tbS9tcmVtYXAuYwo+IEBAIC02MjAsNiArNjIwLDcg QEAgc3RhdGljIHVuc2lnbmVkIGxvbmcgbW92ZV92bWEoc3RydWN0IHZtX2FyZWFfc3RydWN0ICp2 bWEsCj4gIAkJCXJldHVybiAtRU5PTUVNOwo+ICAJfQo+ICAKPiArCXZtYV9tYXJrX2xvY2tlZCh2 bWEpOwo+ICAJbmV3X3Bnb2ZmID0gdm1hLT52bV9wZ29mZiArICgob2xkX2FkZHIgLSB2bWEtPnZt X3N0YXJ0KSA+PiBQQUdFX1NISUZUKTsKPiAgCW5ld192bWEgPSBjb3B5X3ZtYSgmdm1hLCBuZXdf YWRkciwgbmV3X2xlbiwgbmV3X3Bnb2ZmLAo+ICAJCQkgICAmbmVlZF9ybWFwX2xvY2tzKTsKClJl dmlld2VkLWJ5OiBMYXVyZW50IER1Zm91ciA8bGF1cmVudC5kdWZvdXJAZnIuaWJtLmNvbT4KCl9f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmxpbnV4LWFybS1r ZXJuZWwgbWFpbGluZyBsaXN0CmxpbnV4LWFybS1rZXJuZWxAbGlzdHMuaW5mcmFkZWFkLm9yZwpo dHRwOi8vbGlzdHMuaW5mcmFkZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4LWFybS1rZXJu ZWwK