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=-6.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham 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 219F1C35250 for ; Sat, 8 Feb 2020 08:53:40 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id CE7CF20726 for ; Sat, 8 Feb 2020 08:53:39 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="MkdFqwtW" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CE7CF20726 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 58E496B0010; Sat, 8 Feb 2020 03:53:39 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 53E056B0032; Sat, 8 Feb 2020 03:53:39 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 405AE6B0036; Sat, 8 Feb 2020 03:53:39 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0218.hostedemail.com [216.40.44.218]) by kanga.kvack.org (Postfix) with ESMTP id 293C16B0010 for ; Sat, 8 Feb 2020 03:53:39 -0500 (EST) Received: from smtpin11.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id B4AC6180AD801 for ; Sat, 8 Feb 2020 08:53:38 +0000 (UTC) X-FDA: 76466346516.11.yard63_2a7b30c64e57 X-HE-Tag: yard63_2a7b30c64e57 X-Filterd-Recvd-Size: 5279 Received: from mail-lj1-f195.google.com (mail-lj1-f195.google.com [209.85.208.195]) by imf03.hostedemail.com (Postfix) with ESMTP for ; Sat, 8 Feb 2020 08:53:38 +0000 (UTC) Received: by mail-lj1-f195.google.com with SMTP id w1so1812493ljh.5 for ; Sat, 08 Feb 2020 00:53:38 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:references:mime-version:message-id :content-transfer-encoding; bh=oEOyBHTXPMQdj/UM2dzI+YuiPP5PJ4LTelyVYhQpHJA=; b=MkdFqwtW30JWyDXpYbRuss4ucq66Cr8P4CtN1mncu6Yym+uTRKCzium+3ijm0jUH8l GdNpH4IsoOZDjrqMH/MWWs4jGP+/SyQCWKHK/DVT14pVxqwbvTk67IhGKTv7uGQSLGAG tnB1dYX+fJxbh+X1mSaj+s1IPA2UE2GJ3jnVeQy145EOe+TrX0T9L6IaDtTRoZpNRauc CGr8Qf116wa6Mp7iX5HS5/R8E+n61u09KGu3tQyQ4zgMpL/itJ8YYBRyWvdDA52idJH9 XdXmXtq1QlTPaMtg04SHobIFCd6SRWMG0DXi0/HiUt0QBjoGNgg0EaoJoAcHcKE4pweP JBxg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:references:mime-version :message-id:content-transfer-encoding; bh=oEOyBHTXPMQdj/UM2dzI+YuiPP5PJ4LTelyVYhQpHJA=; b=Und2jKR1Si+6CNHoahyjfCfPodTQqensIWt6qcOTF4GPEBqqlKquQorJIOkuT3gEXa d3jhbLLBAXV97L+HxTm0sB7LEqZlBN3PZNWvZzD3cZhha4VGxVCOzMdWbqJ7u6mR42bB PPnAEG2Saqhi5Ju/vxRWeZThOgAoUmKWYtTL9cuzMKGOXcoxfrYyCzvxrtPl8vnYR2FL JLsMd8MmasuSCdiMhsK8iybPB7fqtWO3fgCZ7hSxuUMLOKinM6sfGURBYxjUEavD5AJJ ghw+RDGut+56kdjZZQfAko5DECP7Sz4oqZUs2ZVIQt0/ioaZbodgjZikbtugH1qCPJ3j wAfw== X-Gm-Message-State: APjAAAU1oEKS5moY7YBbEiQhW4wL5CyjprTiDw1eeGulIAs1yPuQ5clk WZq/1cOOzdjW9VPOp3OlpkF/X6T1bkU= X-Google-Smtp-Source: APXvYqwqnXNEZA1uAjAhYYnRV6j6FfvEpVIn6wnwCWyqxm8MfN655P9YLjCvTLCOyKo8oA0beevG/A== X-Received: by 2002:a2e:b017:: with SMTP id y23mr2134194ljk.229.1581152016661; Sat, 08 Feb 2020 00:53:36 -0800 (PST) Received: from N-20L6PF1KTYA2 ([131.228.2.20]) by smtp.gmail.com with ESMTPSA id f16sm2650775ljn.17.2020.02.08.00.53.34 (version=TLS1_2 cipher=AES128-GCM-SHA256 bits=128/128); Sat, 08 Feb 2020 00:53:36 -0800 (PST) Date: Sat, 8 Feb 2020 16:53:34 +0800 From: "Li Xinhai" To: "linux-mm@kvack.org" Cc: akpm , riel , kirill.shutemov , willy Subject: Re: [PATCH 1/3] mm: don't prepare anon_vma if vma has VM_WIPEONFORK References: <1581150928-3214-1-git-send-email-lixinhai.lxh@gmail.com>, <1581150928-3214-2-git-send-email-lixinhai.lxh@gmail.com> X-Priority: 3 X-GUID: 93AD7419-A85B-45AF-ACBE-F257B8EA8FE2 X-Has-Attach: no X-Mailer: Foxmail 7.2.13.365[cn] Mime-Version: 1.0 Message-ID: <202002081653328969921@gmail.com> Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: c29ycnksIHNob3VsZCBzZW5kIHRvwqBSaWsgdmFuIFJpZWw8cmllbEBzdXJyaWVsLmNvbT4KCk9u IDIwMjAtMDItMDjCoGF0IDE2OjM1wqBMaSBYaW5oYWnCoHdyb3RlOgo+SW4gZHVwX21tYXAoKSwg YW5vbl92bWFfcHJlcGFyZSgpIGlzIGNhbGxlZCBmb3Igdm1hIGhhcyBWTV9XSVBFT05GT1JLLAo+ YW5kIHBhcmFtZXRlciAndG1wJyAoaS5lLiwgdGhlIG5ldyB2bWEgb2YgY2hpbGQpIGhhcyBzYW1l IC0+dm1fbmV4dCBhbmQKPi0+dm1fcHJldiBhcyBpdHMgcGFyZW50IHZtYS4gVGhhdCBhbGxvd3Mg YW5vbl92bWEgdXNlZCBieSBwYXJlbnQgYmVlbgo+bWlzdGFrZW5seSBzaGFyZWQgYnkgY2hpbGQg KGZpbmRfbWVyZ2VhYmxlX2Fub25fdm1hKCkgd2lsbCBkbyB0aGlzIHJldXNlCj53b3JrKS4KPgo+ QmVzaWRlcyB0aGlzIGlzc3VlLCBjYWxsIGFub25fdm1hX3ByZXBhcmUoKSBzaG91bGQgYmUgYXZv aWRlZCBiZWNhdXNlIHdlCj5kb24ndCBjb3B5IHBhZ2UgZm9yIHRoaXMgdm1hLiBQcmVwYXJpbmcg YW5vbl92bWEgd2lsbCBiZSBoYW5kbGVkIGR1cmluZwo+ZmF1bHQuCj4KPkZpeGVzOiBkMmNkOWVk ZTZlMTkgKCJtbSxmb3JrOiBpbnRyb2R1Y2UgTUFEVl9XSVBFT05GT1JLIikKPlNpZ25lZC1vZmYt Ynk6IExpIFhpbmhhaSA8bGl4aW5oYWkubHhoQGdtYWlsLmNvbT4KPkNjOiBSaWsgdmFuIFJpZWwg PHJpZWxAcmVkaGF0LmNvbT4KPkNjOiBLaXJpbGwgQS4gU2h1dGVtb3YgPGtpcmlsbC5zaHV0ZW1v dkBsaW51eC5pbnRlbC5jb20+Cj5DYzogTWF0dGhldyBXaWxjb3ggPHdpbGx5QGluZnJhZGVhZC5v cmc+Cj4tLS0KPiBrZXJuZWwvZm9yay5jIHwgOCArKysrKy0tLQo+IDEgZmlsZSBjaGFuZ2VkLCA1 IGluc2VydGlvbnMoKyksIDMgZGVsZXRpb25zKC0pCj4KPmRpZmYgLS1naXQgYS9rZXJuZWwvZm9y ay5jIGIva2VybmVsL2ZvcmsuYwo+aW5kZXggMDgwODA5NS4uMWJiZDQ5YSAxMDA2NDQKPi0tLSBh L2tlcm5lbC9mb3JrLmMKPisrKyBiL2tlcm5lbC9mb3JrLmMKPkBAIC01NTIsMTAgKzU1MiwxMiBA QCBzdGF0aWMgX19sYXRlbnRfZW50cm9weSBpbnQgZHVwX21tYXAoc3RydWN0IG1tX3N0cnVjdCAq bW0sCj4gaWYgKHJldHZhbCkKPiBnb3RvIGZhaWxfbm9tZW1fYW5vbl92bWFfZm9yazsKPiBpZiAo dG1wLT52bV9mbGFncyAmIFZNX1dJUEVPTkZPUkspIHsKPi0JLyogVk1fV0lQRU9ORk9SSyBnZXRz IGEgY2xlYW4gc2xhdGUgaW4gdGhlIGNoaWxkLiAqLwo+KwkvKgo+KwkqIFZNX1dJUEVPTkZPUksg Z2V0cyBhIGNsZWFuIHNsYXRlIGluIHRoZSBjaGlsZC4KPisJKiBEb24ndCBwcmVwYXJlIGFub25f dm1hIHVudGlsIGZhdWx0IHNpbmNlIHdlIGRvbid0Cj4rCSogY29weSBwYWdlIGZvciBjdXJyZW50 IHZtYS4KPisJKi8KPiB0bXAtPmFub25fdm1hID0gTlVMTDsKPi0JaWYgKGFub25fdm1hX3ByZXBh cmUodG1wKSkKPi0JZ290byBmYWlsX25vbWVtX2Fub25fdm1hX2Zvcms7Cj4gfSBlbHNlIGlmIChh bm9uX3ZtYV9mb3JrKHRtcCwgbXBudCkpCj4gZ290byBmYWlsX25vbWVtX2Fub25fdm1hX2Zvcms7 Cj4gdG1wLT52bV9mbGFncyAmPSB+KFZNX0xPQ0tFRCB8IFZNX0xPQ0tPTkZBVUxUKTsKPi0tCj4x LjguMy4xCj4=