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Thu, 14 Nov 2019 21:59:38 -0800 (PST) Received: from N-20L6PF1KTYA2 ([131.228.2.20]) by smtp.gmail.com with ESMTPSA id 16sm13081467wmf.0.2019.11.14.21.59.36 (version=TLS1_2 cipher=AES128-GCM-SHA256 bits=128/128); Thu, 14 Nov 2019 21:59:37 -0800 (PST) Date: Fri, 15 Nov 2019 13:59:36 +0800 From: "lixinhai.lxh@gmail.com" To: "linux-mm@kvack.org" Cc: akpm , mhocko Subject: Re: [PATCH] mm: Improve PageAnon() to check the whole PAGE_MAPPING_FLAGS References: <1573787903-2023-1-git-send-email-lixinhai.lxh@gmail.com> X-Priority: 3 X-GUID: 2942E210-BE4E-410B-8F45-5BC0D5AD272D X-Has-Attach: no X-Mailer: Foxmail 7.2.13.365[cn] Mime-Version: 1.0 Message-ID: <2019111513593472959835@gmail.com> Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000265, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: T24gMjAxOS0xMS0xNcKgYXQgMTE6MTjCoExpIFhpbmhhacKgd3JvdGU6Cj5QYWdlQW5vbigpIGp1 c3QgY2hlY2tpbmcgb24gUEFHRV9NQVBQSU5HX0FOT04gYml0IHdvdWxkIGNhdXNlIHBhZ2UsCj53 aXRoIFBhZ2VLc20gYXMgdHJ1ZSwgYmVlbiB3cm9uZ2x5IGNvbnNpZGVyZWQgYXMgUGFnZUFub24u IE5vdywKPmNoZWNraW5nIHRoZSB3aG9sZSBQQUdFX01BUFBJTkdfRkxBR1MgdG8gYXZvaWQgdGhp cyBlcnJvci4KPgo+UmVwb3J0ZWQgZnJvbToKPmh0dHBzOi8vbG9yZS5rZXJuZWwub3JnL2xpbnV4 LW1tLzIwMTkxMTEzMDAwNjUxLjIwNjc3LTEtcmNhbXBiZWxsQG52aWRpYS5jb20vCj4KPlJlcG9y dGVkLWJ5OiBSYWxwaCBDYW1wYmVsbCA8cmNhbXBiZWxsQG52aWRpYS5jb20+Cj5DYzogQW5kcmV3 IE1vcnRvbiA8YWtwbUBsaW51eC1mb3VuZGF0aW9uLm9yZz4KPkNjOiBNaWNoYWwgSG9ja28gPG1o b2Nrb0BzdXNlLmNvbT4KPlNpZ25lZC1vZmYtYnk6IExpIFhpbmhhaSA8bGl4aW5oYWkubHhoQGdt YWlsLmNvbT4KPi0tLQo+IGluY2x1ZGUvbGludXgvcGFnZS1mbGFncy5oIHwgMyArKy0KPiAxIGZp bGUgY2hhbmdlZCwgMiBpbnNlcnRpb25zKCspLCAxIGRlbGV0aW9uKC0pCj4KPmRpZmYgLS1naXQg YS9pbmNsdWRlL2xpbnV4L3BhZ2UtZmxhZ3MuaCBiL2luY2x1ZGUvbGludXgvcGFnZS1mbGFncy5o Cj5pbmRleCAxYmY4M2M4Li4xODQ5ZmMzIDEwMDY0NAo+LS0tIGEvaW5jbHVkZS9saW51eC9wYWdl LWZsYWdzLmgKPisrKyBiL2luY2x1ZGUvbGludXgvcGFnZS1mbGFncy5oCj5AQCAtNDYxLDcgKzQ2 MSw4IEBAIHN0YXRpYyBfX2Fsd2F5c19pbmxpbmUgaW50IFBhZ2VNYXBwaW5nRmxhZ3Moc3RydWN0 IHBhZ2UgKnBhZ2UpCj4gc3RhdGljIF9fYWx3YXlzX2lubGluZSBpbnQgUGFnZUFub24oc3RydWN0 IHBhZ2UgKnBhZ2UpCj4gewo+IHBhZ2UgPSBjb21wb3VuZF9oZWFkKHBhZ2UpOwo+LQlyZXR1cm4g KCh1bnNpZ25lZCBsb25nKXBhZ2UtPm1hcHBpbmcgJiBQQUdFX01BUFBJTkdfQU5PTikgIT0gMDsK PisJcmV0dXJuICgodW5zaWduZWQgbG9uZylwYWdlLT5tYXBwaW5nICYgUEFHRV9NQVBQSU5HX0ZM QUdTKSA9PQo+KwlQQUdFX01BUFBJTkdfQU5PTjsKPiB9Cj4KPiBzdGF0aWMgX19hbHdheXNfaW5s aW5lIGludCBfX1BhZ2VNb3ZhYmxlKHN0cnVjdCBwYWdlICpwYWdlKQo+LS0KPjEuOC4zLjEKPiAK ClRoZSBjdXJyZW50IHNlbWFudGljcyBvZiBQYWdlQW5vbigpIGZvciBib3RoIEtTTSBhbmQgIUtT TSBhcmUgdXNlZCBpbiBtYW55IApwbGFjZXMsIHNvIGNhbid0IGNoYW5nZSBpdCBhbG9uZSB3aXRo b3V0IGNoYW5nZSBvdGhlciBjb2RlLgpOZWVkIHNraXAgdGhpcyBwYXRjaC4KCi0gWGluaGFpCg==