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Tue, 6 Sep 2022 15:35:48 GMT Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 7149CA405B; Tue, 6 Sep 2022 15:35:24 +0000 (GMT) Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 4DAD3A4054; Tue, 6 Sep 2022 15:35:23 +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 15:35:23 +0000 (GMT) Message-ID: Date: Tue, 6 Sep 2022 17:35:22 +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 10/28] mm/mmap: mark VMAs as locked in vma_adjust 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> <20220901173516.702122-11-surenb@google.com> From: Laurent Dufour In-Reply-To: <20220901173516.702122-11-surenb@google.com> X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: RPviPaQg9ufmkDmm23mjHAa54D3aXI3j X-Proofpoint-GUID: ims9kwP10imrbQrjpniggmamS9Hw3mcB 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 lowpriorityscore=0 bulkscore=0 clxscore=1015 malwarescore=0 priorityscore=1501 mlxscore=0 suspectscore=0 spamscore=0 impostorscore=0 adultscore=0 mlxlogscore=999 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2207270000 definitions=main-2209060073 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220906_083548_442606_A2FA1A56 X-CRM114-Status: GOOD ( 28.15 ) 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 TGUgMDEvMDkvMjAyMiDDoCAxOTozNCwgU3VyZW4gQmFnaGRhc2FyeWFuIGEgw6ljcml0wqA6Cj4g dm1hX2FkanVzdCBtb2RpZmllcyBhIFZNQSBhbmQgcG9zc2libHkgaXRzIG5laWdoYm9ycy4gTWFy ayB0aGVtIGFzIGxvY2tlZAo+IGJlZm9yZSBtYWtpbmcgdGhlIG1vZGlmaWNhdGlvbnMuCj4gCj4g U2lnbmVkLW9mZi1ieTogU3VyZW4gQmFnaGRhc2FyeWFuIDxzdXJlbmJAZ29vZ2xlLmNvbT4KPiAt LS0KPiAgbW0vbW1hcC5jIHwgMTEgKysrKysrKysrKy0KPiAgMSBmaWxlIGNoYW5nZWQsIDEwIGlu c2VydGlvbnMoKyksIDEgZGVsZXRpb24oLSkKPiAKPiBkaWZmIC0tZ2l0IGEvbW0vbW1hcC5jIGIv bW0vbW1hcC5jCj4gaW5kZXggZjg5YzliMDU4MTA1Li5lZDU4Y2YwNjg5YjIgMTAwNjQ0Cj4gLS0t IGEvbW0vbW1hcC5jCj4gKysrIGIvbW0vbW1hcC5jCj4gQEAgLTcxMCw2ICs3MTAsMTAgQEAgaW50 IF9fdm1hX2FkanVzdChzdHJ1Y3Qgdm1fYXJlYV9zdHJ1Y3QgKnZtYSwgdW5zaWduZWQgbG9uZyBz dGFydCwKPiAgCWxvbmcgYWRqdXN0X25leHQgPSAwOwo+ICAJaW50IHJlbW92ZV9uZXh0ID0gMDsK PiAgCj4gKwl2bWFfbWFya19sb2NrZWQodm1hKTsKPiArCWlmIChuZXh0KQo+ICsJCXZtYV9tYXJr X2xvY2tlZChuZXh0KTsKPiArCgpJIHdhcyB3b25kZXJpbmcgaWYgdGhlIFZNQXMgaW5zZXJ0IGFu ZCBleHBhbmQgc2hvdWxkIGJlIGxvY2tlZCB0b28uCgpGb3IgZXhwYW5kLCBJIGNhbid0IHNlZSBh bnkgdmFsaWQgcmVhc29uLCBidXQgZm9yIGluc2VydCwgSSdtIHB1enpsZWQuCkkgd291bGQgdGhp bmsgdGhhdCBpdCBpcyBiZXR0ZXIgdG8gbG9jayB0aGUgVk1BIHRvIGJlIGluc2VydGVkIGJ1dCBJ IGNhbid0CnJlYWxseSBqdXN0aWZ5IHRoYXQuCgpJdCBtYXkgYmUgbmljZSB0byBkZXRhaWwgd2h5 IHRoaXMgaXMgbm90IG5lZWQgdG8gbG9jayBpbnNlcnQgYW5kIGV4cGFuZCBoZXJlLgoKPiAgCWlm IChuZXh0ICYmICFpbnNlcnQpIHsKPiAgCQlzdHJ1Y3Qgdm1fYXJlYV9zdHJ1Y3QgKmV4cG9ydGVy ID0gTlVMTCwgKmltcG9ydGVyID0gTlVMTDsKPiAgCj4gQEAgLTc1NCw4ICs3NTgsMTEgQEAgaW50 IF9fdm1hX2FkanVzdChzdHJ1Y3Qgdm1fYXJlYV9zdHJ1Y3QgKnZtYSwgdW5zaWduZWQgbG9uZyBz dGFydCwKPiAgCQkJICogSWYgbmV4dCBkb2Vzbid0IGhhdmUgYW5vbl92bWEsIGltcG9ydCBmcm9t IHZtYSBhZnRlcgo+ICAJCQkgKiBuZXh0LCBpZiB0aGUgdm1hIG92ZXJsYXBzIHdpdGggaXQuCj4g IAkJCSAqLwo+IC0JCQlpZiAocmVtb3ZlX25leHQgPT0gMiAmJiAhbmV4dC0+YW5vbl92bWEpCj4g KwkJCWlmIChyZW1vdmVfbmV4dCA9PSAyICYmICFuZXh0LT5hbm9uX3ZtYSkgewo+ICAJCQkJZXhw b3J0ZXIgPSBuZXh0LT52bV9uZXh0Owo+ICsJCQkJaWYgKGV4cG9ydGVyKQo+ICsJCQkJCXZtYV9t YXJrX2xvY2tlZChleHBvcnRlcik7Cj4gKwkJCX0KPiAgCj4gIAkJfSBlbHNlIGlmIChlbmQgPiBu ZXh0LT52bV9zdGFydCkgewo+ICAJCQkvKgo+IEBAIC05MzEsNiArOTM4LDggQEAgaW50IF9fdm1h X2FkanVzdChzdHJ1Y3Qgdm1fYXJlYV9zdHJ1Y3QgKnZtYSwgdW5zaWduZWQgbG9uZyBzdGFydCwK PiAgCQkJICogInZtYS0+dm1fbmV4dCIgZ2FwIG11c3QgYmUgdXBkYXRlZC4KPiAgCQkJICovCj4g IAkJCW5leHQgPSB2bWEtPnZtX25leHQ7Cj4gKwkJCWlmIChuZXh0KQo+ICsJCQkJdm1hX21hcmtf bG9ja2VkKG5leHQpOwo+ICAJCX0gZWxzZSB7Cj4gIAkJCS8qCj4gIAkJCSAqIEZvciB0aGUgc2Nv cGUgb2YgdGhlIGNvbW1lbnQgIm5leHQiIGFuZAoKCl9fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fCmxpbnV4LWFybS1rZXJuZWwgbWFpbGluZyBsaXN0CmxpbnV4 LWFybS1rZXJuZWxAbGlzdHMuaW5mcmFkZWFkLm9yZwpodHRwOi8vbGlzdHMuaW5mcmFkZWFkLm9y Zy9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4LWFybS1rZXJuZWwK