From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 827D9C83000 for ; Tue, 28 Apr 2020 11:49:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 63B7F206D7 for ; Tue, 28 Apr 2020 11:49:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726752AbgD1Ltf (ORCPT ); Tue, 28 Apr 2020 07:49:35 -0400 Received: from szxga02-in.huawei.com ([45.249.212.188]:2065 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726285AbgD1Ltf (ORCPT ); Tue, 28 Apr 2020 07:49:35 -0400 Received: from DGGEMM404-HUB.china.huawei.com (unknown [172.30.72.54]) by Forcepoint Email with ESMTP id 2CE5A9A64A1CC1F80253; Tue, 28 Apr 2020 19:49:33 +0800 (CST) Received: from dggeme705-chm.china.huawei.com (10.1.199.101) by DGGEMM404-HUB.china.huawei.com (10.3.20.212) with Microsoft SMTP Server (TLS) id 14.3.487.0; Tue, 28 Apr 2020 19:49:32 +0800 Received: from dggeme756-chm.china.huawei.com (10.3.19.102) by dggeme705-chm.china.huawei.com (10.1.199.101) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1913.5; Tue, 28 Apr 2020 19:49:32 +0800 Received: from dggeme756-chm.china.huawei.com ([10.6.80.68]) by dggeme756-chm.china.huawei.com ([10.6.80.68]) with mapi id 15.01.1913.007; Tue, 28 Apr 2020 19:49:32 +0800 From: Hushijie To: Mike Kravetz CC: "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" , Nixiaoming , "wangxu (AE)" , "Wangkefeng (OS Kernel Lab)" , yangerkun , "Wangle (RTOS FAE)" , "Chengang (L)" Subject: Re [PATCH] [RFC]hugetlbfs: Get unmapped area below TASK_UNMAPPED_BASE for hugetlbfs Thread-Topic: Re [PATCH] [RFC]hugetlbfs: Get unmapped area below TASK_UNMAPPED_BASE for hugetlbfs Thread-Index: AdYdUmUl7otGISMhRXK04Qrl9WrqxA== Date: Tue, 28 Apr 2020 11:49:32 +0000 Message-ID: <2f7fcfd8d66d4df7ac0c972fd9c3abc1@huawei.com> Accept-Language: en-US Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.67.103.250] Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org IE9uIDQvMjgvMjAgNjo0NiBBTSwgTWlrZSBLcmF2ZXR6IHdyb3RlOg0KPkp1c3QgY3VyaW91cy4g IEhhdmUgeW91IGFjdHVhbGx5IHNlZWluZyBhIHByb2JsZW0gd2l0aCB0aGlzIGNvZGUsIG9yIGlz DQo+dGhlIHJlYXNvbiBmb3IgdGhlIHByb3Bvc2VkIGNoYW5nZSBqdXN0IHRoZSByZXN1bHQgb2Yg Y29kZSBpbnNwZWN0aW9uPyAgSSBhc2sNCj5iZWNhdXNlIG1hbnkgYXJjaGl0ZWN0dXJlcyBoYXZl IHRoZWlyIG93biB2ZXJzaW9uIG9mIGh1Z2V0bGJfZ2V0X3VubWFwcGVkX2FyZWEuDQo+U28sIGlm IHlvdSBhcmUgc2VlaW5nIHRoaXMgaXNzdWUgaXQgd291bGQgYmUgaW50ZXJlc3RpbmcgdG8ga25v dyB3aGF0DQo+YXJjaGl0ZWN0dXJlIHlvdSBhcmUgcnVubmluZy4NCg0KVGhhbmtzIGZvciB5b3Vy IHJlcGx5Lg0KDQpXZSBhY3R1YWxseSBmb3VuZCB0aGlzIHByb2JsZW0gb24gYXJtNjQgYXJjaGl0 ZWN0dXJlLCBydW5uaW5nIGEgMzItYml0IA0KcHJvZ3JhbS4gV2hlbiB0aGUgYWRkcmVzcyBzcGFj ZSBiZWxvdyBUQVNLX1VOTUFQUEVEX0JBU0UgaXMgY29tcGxldGVseSANCmV4aGF1c3RlZCwgc2ht YXQoKSBmb3IgaHVnZSBwYWdlcyB3aWxsIHJldHVybiBFTk9NRU0sIGJ1dCBzaG1hdCgpIGZvciAN Cm5vcm1hbCBwYWdlcyBjYW4gc3RpbGwgc3VjY2Vzcy4NCg0KPlRoZSByb3V0aW5lIGh1Z2V0bGJf Z2V0X3VubWFwcGVkX2FyZWEgaGFzIG5vdCBjaGFuZ2VkIG11Y2ggc2luY2UgdGhpcyBmaXJzdA0K PmdpdCB2ZXJzaW9uLiAgSSBzdXNwZWN0IHRoaXMgaXMgYmVjYXVzZSBpdCBpcyBtb3N0bHkgdW51 c2VkLg0KPg0KPkkgbm90aWNlZCB0aGF0IGh1Z2V0bGJfZ2V0X3VubWFwcGVkX2FyZWEgaXMgb25l IG9mIG9ubHkgYSBmZXcgcGxhY2VzIGluIGFyY2gNCj5pbmRlcGVuZGVudCBjb2RlIGNhbGxpbmcg dm1fdW5tYXBwZWRfYXJlYSgpLiAgVGhlIG90aGVyIGNhbGxlcnMgYXJlIGFyY2gNCj5pbmRlcGVu ZGVudCBmYWxsIGJhY2sgcm91dGluZXMgZm9yIGFyY2hfZ2V0X3VubWFwcGVkX2FyZWEqIHJvdXRp bmVzLiAgSWYgd2UNCj5tb3ZlIGZvcndhcmQgd2l0aCBjaGFuZ2VzIHRvIHRoaXMgcm91dGluZSwg d291bGQgaXQgbWFrZSBtb3JlIHNlbnNlIHRvIHVzZQ0KPnRoZSBhcmNoX2dldF91bm1hcHBlZF9h cmVhKiByb3V0aW5lcyBpbnN0ZWFkIG9mIGNhbGxpbmcgdm1fdW5tYXBwZWRfYXJlYQ0KPmRpcmVj dGx5PyAgVGhpcyB3b3VsZCB0YWtlIGFkdmFudGFnZSBvZiBhbnkgYXJjaCBzcGVjaWZpYyBpZiBp dCBleGlzdHMuDQoNCkkgdG90YWxseSBhZ3JlZSB3aXRoIHlvdS4NCiANCkl0IGlzIG1vcmUgYXBw cm9wcmlhdGUgdG8gaW1wbGVtZW50aW5nIGh1Z2V0bGJfZ2V0X3VubWFwcGVkX2FyZWEoKSBmb3Ig YSANCnNwZWNpZmljIGFyY2hpdGVjdHVyZSwgaW5zdGVhZCBvZiBjaGFnaW5nIGNvbW1vbiBodWdl dGxiX2dldF91bm1hcHBlZF9hcmVhKCkgDQppbnRlcmZhY2UgYXQgImZzL2h1Z2V0bGJmcy9pbm9k ZS5jIi4NCg0KSSB3aWxsIHN1Ym1pdCBhbm90aGVyIHBhdGNoIGp1c3QgZm9yIHNwZWNpZmljIGFy Y2hpdGVjdHVyZXMgKGFybTY0KSBsYXRlci4gDQpUaGFua3MgZm9yIHlvdXIgcmVwbHkgYW5kIGFk dmlzZS4NCg==