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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2E154C433FE for ; Wed, 30 Nov 2022 04:02:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232501AbiK3ECI (ORCPT ); Tue, 29 Nov 2022 23:02:08 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45188 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233039AbiK3ECB (ORCPT ); Tue, 29 Nov 2022 23:02:01 -0500 Received: from zju.edu.cn (mail.zju.edu.cn [61.164.42.155]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id E81486A77D; Tue, 29 Nov 2022 20:01:57 -0800 (PST) Received: by ajax-webmail-mail-app3 (Coremail) ; Wed, 30 Nov 2022 12:01:41 +0800 (GMT+08:00) X-Originating-IP: [10.162.98.155] Date: Wed, 30 Nov 2022 12:01:41 +0800 (GMT+08:00) X-CM-HeaderCharset: UTF-8 From: duoming@zju.edu.cn To: "David Ahern" Cc: linux-kernel@vger.kernel.org, davem@davemloft.net, yoshfuji@linux-ipv6.org, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, netdev@vger.kernel.org Subject: Re: [PATCH net] net: Add a gfp_t parameter in ip_fib_metrics_init to support atomic context X-Priority: 3 X-Mailer: Coremail Webmail Server Version XT5.0.13 build 20210104(ab8c30b6) Copyright (c) 2002-2022 www.mailtech.cn zju.edu.cn In-Reply-To: References: <20221129055317.53788-1-duoming@zju.edu.cn> Content-Transfer-Encoding: base64 Content-Type: text/plain; charset=UTF-8 MIME-Version: 1.0 Message-ID: <27dfa798.18d8b.184c6b28dcc.Coremail.duoming@zju.edu.cn> X-Coremail-Locale: zh_CN X-CM-TRANSID: cC_KCgD3_6ul1YZjKXbrCQ--.671W X-CM-SenderInfo: qssqjiasttq6lmxovvfxof0/1tbiAgQJAVZdtcpP+AAnsq X-Coremail-Antispam: 1Ur529EdanIXcx71UUUUU7IcSsGvfJ3iIAIbVAYjsxI4VWxJw CS07vEb4IE77IF4wCS07vE1I0E4x80FVAKz4kxMIAIbVAFxVCaYxvI4VCIwcAKzIAtYxBI daVFxhVjvjDU= Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org SGVsbG8sCgpPbiBUdWUsIDI5IE5vdiAyMDIyIDA5OjMzOjQ1IC0wNzAwIERhdmlkIEFoZXJuIHdy b3RlOgoKPiBPbiAxMS8yOC8yMiAxMDo1MyBQTSwgRHVvbWluZyBaaG91IHdyb3RlOgo+ID4gVGhl IGlwX2ZpYl9tZXRyaWNzX2luaXQoKSBkbyBub3Qgc3VwcG9ydCBhdG9taWMgY29udGV4dCwgYmVj YXVzZSBpdAo+ID4gY2FsbHMgImt6YWxsb2MoLi4uLCBHRlBfS0VSTkVMKSIuIFdoZW4gaXBfZmli X21ldHJpY3NfaW5pdCgpIGlzIHVzZWQKPiA+IGluIGF0b21pYyBjb250ZXh0LCB0aGUgc2xlZXAt aW4tYXRvbWljLWNvbnRleHQgYnVnIHdpbGwgaGFwcGVuLgo+IAo+IERpZCB5b3UgYWN0dWFsbHkg aGl0IHRoaXMgc2xlZXAtaW4tYXRvbWljLWNvbnRleHQgYnVnIG9yIGlzIGl0IHRoZW9yeQo+IGJh c2VkIG9uIGNvZGUgYW5hbHlzaXM/CgpUaGFuayB5b3VyIGZvciB5b3VyIHJlcGx5IGFuZCBzdWdn ZXN0aW9ucy4gVGhpcyBpcyBiYXNlZCBvbiBjb2RlIGFuYWx5c2lzLgoKPiA+IEZvciBleGFtcGxl LCB0aGUgbmVpZ2hfcHJveHlfcHJvY2VzcygpIGlzIGEgdGltZXIgaGFuZGxlciB0aGF0IGlzCj4g PiB1c2VkIHRvIHByb2Nlc3MgdGhlIHByb3h5IHJlcXVlc3QgdGhhdCBpcyB0aW1lb3V0LiBCdXQg aXQgY291bGQgY2FsbAo+ID4gaXBfZmliX21ldHJpY3NfaW5pdCgpLiBBcyBhIHJlc3VsdCwgdGhl IGNhbl9ibG9jayBmbGFnIGluIGlwdjZfYWRkX2FkZHIoKQo+ID4gYW5kIHRoZSBnZnBfZmxhZ3Mg aW4gYWRkcmNvbmZfZjZpX2FsbG9jKCkgYW5kIGlwNl9yb3V0ZV9pbmZvX2NyZWF0ZSgpCj4gPiBh cmUgdXNlbGVzcy4gVGhlIHByb2Nlc3MgaXMgc2hvd24gYmVsb3cuCj4gPiAKPiA+ICAgICAoYXRv bWljIGNvbnRleHQpCj4gPiBuZWlnaF9wcm94eV9wcm9jZXNzKCkKPiA+ICAgcG5kaXNjX3JlZG8o KQo+ID4gICAgIG5kaXNjX3JlY3ZfbnMoKQo+ID4gICAgICAgYWRkcmNvbmZfZGFkX2ZhaWx1cmUo KQo+ID4gICAgICAgICBpcHY2X2FkZF9hZGRyKC4uLiwgYm9vbCBjYW5fYmxvY2spCj4gPiAgICAg ICAgICAgYWRkcmNvbmZfZjZpX2FsbG9jKC4uLiwgZ2ZwX3QgZ2ZwX2ZsYWdzKQo+IAo+IAljZmcg aGFzIGZjX214ID09IE5VTEwuCj4gCj4gPiAgICAgICAgICAgICBpcDZfcm91dGVfaW5mb19jcmVh dGUoLi4uLCBnZnBfdCBnZnBfZmxhZ3MpCj4gCj4gCXJ0LT5maWI2X21ldHJpY3MgPSBpcF9maWJf bWV0cmljc19pbml0KG5ldCwgY2ZnLT5mY19teCwgY2ZnLT5mY19teF9sZW4sCj4gZXh0YWNrKTsK PiAKPiA+ICAgICAgICAgICAgICAgaXBfZmliX21ldHJpY3NfaW5pdCgpCj4gCj4gICAgICAgICBp ZiAoIWZjX214KQo+ICAgICAgICAgICAgICAgICByZXR1cm4gKHN0cnVjdCBkc3RfbWV0cmljcyAq KSZkc3RfZGVmYXVsdF9tZXRyaWNzOwoKSSB1bmRlcnN0YW5kIGl0LCB0aGFuayB5b3VyIGZvciB5 b3VyIGFkdmljZS4KCkJlc3QgcmVnYXJkcywKRHVvbWluZyBaaG91