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[79.139.233.37]) by smtp.googlemail.com with ESMTPSA id e23sm1828838ild.37.2020.01.28.07.59.51 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 28 Jan 2020 07:59:54 -0800 (PST) Subject: Re: [PATCH 3/5] mm/mremap: use pmd_addr_end to calculate next in move_page_tables() To: Wei Yang , Russell King - ARM Linux References: <20200117232254.2792-1-richardw.yang@linux.intel.com> <20200117232254.2792-4-richardw.yang@linux.intel.com> <7147774a-14e9-4ff3-1548-4565f0d214d5@gmail.com> <20200128004301.GD20624@richard> From: Dmitry Osipenko Message-ID: Date: Tue, 28 Jan 2020 18:59:48 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.3.0 MIME-Version: 1.0 In-Reply-To: <20200128004301.GD20624@richard> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200128_075957_942471_86302832 X-CRM114-Status: GOOD ( 16.20 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: thellstrom@vmware.com, yang.shi@linux.alibaba.com, aneesh.kumar@linux.ibm.com, linux-kernel@vger.kernel.org, Jon Hunter , linux-mm@kvack.org, Thierry Reding , "linux-tegra@vger.kernel.org" , kirill@shutemov.name, akpm@linux-foundation.org, dan.j.williams@intel.com, "linux-arm-kernel@lists.infradead.org" Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org MjguMDEuMjAyMCAwMzo0MywgV2VpIFlhbmcg0L/QuNGI0LXRgjoKPiBPbiBTdW4sIEphbiAyNiwg MjAyMCBhdCAwNTo0Nzo1N1BNICswMzAwLCBEbWl0cnkgT3NpcGVua28gd3JvdGU6Cj4+IDE4LjAx LjIwMjAgMDI6MjIsIFdlaSBZYW5nINC/0LjRiNC10YI6Cj4+PiBVc2UgdGhlIGdlbmVyYWwgaGVs cGVyIGluc3RlYWQgb2YgZG8gaXQgYnkgaGFuZC4KPj4+Cj4+PiBTaWduZWQtb2ZmLWJ5OiBXZWkg WWFuZyA8cmljaGFyZHcueWFuZ0BsaW51eC5pbnRlbC5jb20+Cj4+PiAtLS0KPj4+ICBtbS9tcmVt YXAuYyB8IDcgKystLS0tLQo+Pj4gIDEgZmlsZSBjaGFuZ2VkLCAyIGluc2VydGlvbnMoKyksIDUg ZGVsZXRpb25zKC0pCj4+Pgo+Pj4gZGlmZiAtLWdpdCBhL21tL21yZW1hcC5jIGIvbW0vbXJlbWFw LmMKPj4+IGluZGV4IGMyYWY4YmE0YmE0My4uYTI1ODkxNGYzZWUxIDEwMDY0NAo+Pj4gLS0tIGEv bW0vbXJlbWFwLmMKPj4+ICsrKyBiL21tL21yZW1hcC5jCj4+PiBAQCAtMjUzLDExICsyNTMsOCBA QCB1bnNpZ25lZCBsb25nIG1vdmVfcGFnZV90YWJsZXMoc3RydWN0IHZtX2FyZWFfc3RydWN0ICp2 bWEsCj4+PiAgCj4+PiAgCWZvciAoOyBvbGRfYWRkciA8IG9sZF9lbmQ7IG9sZF9hZGRyICs9IGV4 dGVudCwgbmV3X2FkZHIgKz0gZXh0ZW50KSB7Cj4+PiAgCQljb25kX3Jlc2NoZWQoKTsKPj4+IC0J CW5leHQgPSAob2xkX2FkZHIgKyBQTURfU0laRSkgJiBQTURfTUFTSzsKPj4+IC0JCS8qIGV2ZW4g aWYgbmV4dCBvdmVyZmxvd2VkLCBleHRlbnQgYmVsb3cgd2lsbCBiZSBvayAqLwo+Pj4gKwkJbmV4 dCA9IHBtZF9hZGRyX2VuZChvbGRfYWRkciwgb2xkX2VuZCk7Cj4+PiAgCQlleHRlbnQgPSBuZXh0 IC0gb2xkX2FkZHI7Cj4+PiAtCQlpZiAoZXh0ZW50ID4gb2xkX2VuZCAtIG9sZF9hZGRyKQo+Pj4g LQkJCWV4dGVudCA9IG9sZF9lbmQgLSBvbGRfYWRkcjsKPj4+ICAJCW9sZF9wbWQgPSBnZXRfb2xk X3BtZCh2bWEtPnZtX21tLCBvbGRfYWRkcik7Cj4+PiAgCQlpZiAoIW9sZF9wbWQpCj4+PiAgCQkJ Y29udGludWU7Cj4+PiBAQCAtMzAxLDcgKzI5OCw3IEBAIHVuc2lnbmVkIGxvbmcgbW92ZV9wYWdl X3RhYmxlcyhzdHJ1Y3Qgdm1fYXJlYV9zdHJ1Y3QgKnZtYSwKPj4+ICAKPj4+ICAJCWlmIChwdGVf YWxsb2MobmV3X3ZtYS0+dm1fbW0sIG5ld19wbWQpKQo+Pj4gIAkJCWJyZWFrOwo+Pj4gLQkJbmV4 dCA9IChuZXdfYWRkciArIFBNRF9TSVpFKSAmIFBNRF9NQVNLOwo+Pj4gKwkJbmV4dCA9IHBtZF9h ZGRyX2VuZChuZXdfYWRkciwgbmV3X2FkZHIgKyBsZW4pOwo+Pj4gIAkJaWYgKGV4dGVudCA+IG5l eHQgLSBuZXdfYWRkcikKPj4+ICAJCQlleHRlbnQgPSBuZXh0IC0gbmV3X2FkZHI7Cj4+PiAgCQlt b3ZlX3B0ZXModm1hLCBvbGRfcG1kLCBvbGRfYWRkciwgb2xkX2FkZHIgKyBleHRlbnQsIG5ld192 bWEsCj4+Pgo+Pgo+PiBIZWxsbyBXZWksCj4+Cj4+IFN0YXJ0aW5nIHdpdGggbmV4dC0yMDIwMDEy MiwgSSdtIHNlZWluZyB0aGUgZm9sbG93aW5nIGluIEtNU0cgb24gTlZJRElBCj4+IFRlZ3JhIChB Uk0zMik6Cj4+Cj4+ICBCVUc6IEJhZCByc3MtY291bnRlciBzdGF0ZSBtbToocHRydmFsKSB0eXBl Ok1NX0FOT05QQUdFUyB2YWw6MTkwCj4+Cj4gCj4gVGhhbmtzLgo+IAo+IFdvdWxkIHlvdSBtaW5k IGxldHRpbmcgbWUga25vdyB3aGljaCBjYXNlIHlvdSBhcmUgdGVzdGluZz8KCk5vdGhpbmcgc3Bl Y2lhbCwgc3lzdGVtZCBzdGFydHMgdG8gZmFsbCBhcGFydCBkdXJpbmcgYm9vdC4KCj4gT3IgdGhl IHNwZWNpYWwgdGhpbmcgaXMgMzItYml0IHBsYXRmb3JtPwpJIGhhdmUgYSBsaW1pdGVkIGtub3ds ZWRnZSBhYm91dCBtbS8sIHNvIGNhbid0IHByb3ZpZGUgZGV0YWlsZWQgZXhwbGFuYXRpb24uCgpQ bGVhc2UgdGFrZSBhIGxvb2sgYXQgdGhpczoKClsxXQpodHRwczovL2VsaXhpci5ib290bGluLmNv bS9saW51eC92NS41L3NvdXJjZS9hcmNoL2FybS9pbmNsdWRlL2FzbS9wZ3RhYmxlLTJsZXZlbC5o I0wyMTAKClsyXQpodHRwczovL2VsaXhpci5ib290bGluLmNvbS9saW51eC92NS41L3NvdXJjZS9p bmNsdWRlL2FzbS1nZW5lcmljL3BndGFibGUuaCNMNTQ5CgpbM10KaHR0cHM6Ly9naXQua2VybmVs Lm9yZy9wdWIvc2NtL2xpbnV4L2tlcm5lbC9naXQvdG9ydmFsZHMvbGludXguZ2l0L2NvbW1pdC8/ aWQ9YzBiYTEwYjUxMmViMmUyYTM4ODhiNmU2Y2MwZTA4OWY1ZTdhMTkxYgoKX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KbGludXgtYXJtLWtlcm5lbCBtYWls aW5nIGxpc3QKbGludXgtYXJtLWtlcm5lbEBsaXN0cy5pbmZyYWRlYWQub3JnCmh0dHA6Ly9saXN0 cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlzdGluZm8vbGludXgtYXJtLWtlcm5lbAo=