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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 59C04C3DA49 for ; Tue, 30 Jul 2024 18:10:45 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id DCB856B007B; Tue, 30 Jul 2024 14:10:44 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id D7B1C6B0082; Tue, 30 Jul 2024 14:10:44 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id C90E26B0083; Tue, 30 Jul 2024 14:10:44 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0011.hostedemail.com [216.40.44.11]) by kanga.kvack.org (Postfix) with ESMTP id 9DDA46B007B for ; Tue, 30 Jul 2024 14:10:44 -0400 (EDT) Received: from smtpin17.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay04.hostedemail.com (Postfix) with ESMTP id 444D41A042D for ; Tue, 30 Jul 2024 18:10:44 +0000 (UTC) X-FDA: 82397209608.17.01A7667 Received: from shelob.surriel.com (shelob.surriel.com [96.67.55.147]) by imf07.hostedemail.com (Postfix) with ESMTP id A77C740020 for ; Tue, 30 Jul 2024 18:10:42 +0000 (UTC) Authentication-Results: imf07.hostedemail.com; dkim=none; spf=pass (imf07.hostedemail.com: domain of riel@shelob.surriel.com designates 96.67.55.147 as permitted sender) smtp.mailfrom=riel@shelob.surriel.com; dmarc=none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1722362987; h=from:from:sender:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=wlNP6pKiKyUMBEdqYmsDg8rBgr5eZxzGyerQENMqHXo=; b=KHWnOZJccjAg0JKY9VkznMJsu3MLWZ8w8Ige79b0VakD2j5idWWeVQbdX/y2BoD9KB8/r4 JwcxnMeUOQUE+is8qCH/n/swUKFA6pJJmTL8hvyle4Tqiw/lSfAzdpogxvFw9t6LKn8GHy n5RBWUYt0AH0Zgfjh1LvwHRvu00gJTI= ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1722362987; a=rsa-sha256; cv=none; b=G+sVXoO33inDuL009+5hGKE8MAZ5jK+uIdxavAzBo2qm7NLtSqHwalWGCfcw1cE1+reM4r BxRdEtHlnMDcwPKnGYgNOH0bVk2q7x8GRrg/iPnwPTMZ/C26EJC7F1qMNY4h9zbELc2/7i Hb+jFejftYtfSD2VUjO81rt5CydITdc= ARC-Authentication-Results: i=1; imf07.hostedemail.com; dkim=none; spf=pass (imf07.hostedemail.com: domain of riel@shelob.surriel.com designates 96.67.55.147 as permitted sender) smtp.mailfrom=riel@shelob.surriel.com; dmarc=none Received: from [2601:18c:9101:a8b6:6e0b:84ff:fee2:98bb] (helo=imladris.surriel.com) by shelob.surriel.com with esmtpsa (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.97.1) (envelope-from ) id 1sYrIk-000000002nP-0dPZ; Tue, 30 Jul 2024 14:10:22 -0400 Message-ID: <5ec248c68c9c2ea0e842562ebfc9e25bc0254e78.camel@surriel.com> Subject: Re: [PATCH 5/6] mm: add selftests to split_huge_page() to verify unmap/zap of zero pages From: Rik van Riel To: Usama Arif , akpm@linux-foundation.org, linux-mm@kvack.org Cc: hannes@cmpxchg.org, shakeel.butt@linux.dev, roman.gushchin@linux.dev, yuzhao@google.com, david@redhat.com, baohua@kernel.org, ryan.roberts@arm.com, rppt@kernel.org, willy@infradead.org, cerasuolodomenico@gmail.com, corbet@lwn.net, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, kernel-team@meta.com, Alexander Zhu Date: Tue, 30 Jul 2024 14:10:22 -0400 In-Reply-To: <20240730125346.1580150-6-usamaarif642@gmail.com> References: <20240730125346.1580150-1-usamaarif642@gmail.com> <20240730125346.1580150-6-usamaarif642@gmail.com> Autocrypt: addr=riel@surriel.com; prefer-encrypt=mutual; keydata=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 Fuy/FD/j ddPxKRTvFCtHcEzTOcFjBmf52uqgt3U40H9GM++0IM0yHusd9EzlaWsbp09vsAV2DwdqS69x9RPbvE/NefO5subhocH76okcF/aQiQ+oj2j6LJZGBJBVigOHg+4zyzdDgKM+jp0bvDI51KQ4XfxV593OhvkS3z3FPx0CE7l62WhWrieHyBblqvkTYgJ6dq4bsYpqxxGJOkQ47WpEUx6onH+rImWmPJbSYGhwBzTo0MmG1Nb1qGPG+mTrSmJjDRxrwf1zjmYqQreWVSFEt26tBpSaWsgdmFuIFJpZWwgPHJpZWxAZmIuY29tPokBPgQTAQIAKAUCW5LbiAIbIwUJEswDAAYLCQgHAwIGFQgCCQoLBBYCAwECHgECF4AACgkQznnekoTE3oOUEQgAsrGxjTC1bGtZyuvyQPcXclap11Ogib6rQywGYu6/Mnkbd6hbyY3wpdyQii/cas2S44NcQj8HkGv91JLVE24/Wt0gITPCH3rLVJJDGQxprHTVDs1t1RAbsbp0XTksZPCNWDGYIBo2aHDwErhIomYQ0Xluo1WBtH/UmHgirHvclsou1Ks9jyTxiPyUKRfae7GNOFiX99+ZlB27P3t8CjtSO831Ij0IpQrfooZ21YVlUKw0Wy6Ll8EyefyrEYSh8KTm8dQj4O7xxvdg865TLeLpho5PwDRF+/mR3qi8CdGbkEc4pYZQO8UDXUN4S+pe0aTeTqlYw8rRHWF9TnvtpcNzZw== Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.50.4 (3.50.4-1.fc39) MIME-Version: 1.0 X-Rspam-User: X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: A77C740020 X-Stat-Signature: 3jy6xqemfj4tiao5fm1st1xj6z8wior1 X-HE-Tag: 1722363042-711300 X-HE-Meta: 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 RnSAHNhF 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 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: List-Subscribe: List-Unsubscribe: On Tue, 2024-07-30 at 13:46 +0100, Usama Arif wrote: > From: Alexander Zhu >=20 > Self tests to verify the RssAnon value to make sure zero > pages are not remapped except in the case of userfaultfd. > Also includes a self test for the userfaultfd use case. >=20 > Signed-off-by: Alexander Zhu > Signed-off-by: Usama Arif Acked-by: Rik van Riel --=20 All Rights Reversed.