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]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 7A7BCCCD183 for ; Tue, 14 Oct 2025 01:42:56 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 770DF8E0024; Mon, 13 Oct 2025 21:42:55 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 721678E0007; Mon, 13 Oct 2025 21:42:55 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 636E78E0024; Mon, 13 Oct 2025 21:42:55 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0013.hostedemail.com [216.40.44.13]) by kanga.kvack.org (Postfix) with ESMTP id 4E40D8E0007 for ; Mon, 13 Oct 2025 21:42:55 -0400 (EDT) Received: from smtpin22.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay09.hostedemail.com (Postfix) with ESMTP id 6A4808848B for ; Tue, 14 Oct 2025 01:42:54 +0000 (UTC) X-FDA: 83995021068.22.A36E0A5 Received: from out-181.mta0.migadu.com (out-181.mta0.migadu.com [91.218.175.181]) by imf17.hostedemail.com (Postfix) with ESMTP id 4559940003 for ; Tue, 14 Oct 2025 01:42:52 +0000 (UTC) Authentication-Results: imf17.hostedemail.com; dkim=pass header.d=linux.dev header.s=key1 header.b=INaU7l8+; dmarc=pass (policy=none) header.from=linux.dev; spf=pass (imf17.hostedemail.com: domain of lance.yang@linux.dev designates 91.218.175.181 as permitted sender) smtp.mailfrom=lance.yang@linux.dev ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1760406172; a=rsa-sha256; cv=none; b=7zm1KtzrA/fBSD0Y5t6vNUkJzZpYmzQNMJkGnA4BUOLtMbX7vPY5lBrbmd5AIQEc7yVl5k u1WJ97UImAEcWu7wP8CN6aO/1+a+Qnw2kEpV1tEIrci7uCVNeu+Mc8W6CL6nrrCPmawmN7 VtdHo6KXOCz4qgmW0d6rHwxEtA6NUcU= ARC-Authentication-Results: i=1; imf17.hostedemail.com; dkim=pass header.d=linux.dev header.s=key1 header.b=INaU7l8+; dmarc=pass (policy=none) header.from=linux.dev; spf=pass (imf17.hostedemail.com: domain of lance.yang@linux.dev designates 91.218.175.181 as permitted sender) smtp.mailfrom=lance.yang@linux.dev ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1760406172; h=from:from: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:dkim-signature; bh=EBF0Ps2ImCzZ4tZ3MrZ01lPp3rnT5K2J0edlyN1v5io=; b=W+mlgYT6mUbuH/+4R1GqwSW5Anub8d6hqsRVcUqe3t4ct6JEgEjJw0J/INsbcWW3LKKLSw k2riP9R2IbPB/8Rsys4/K/+L+hxdElfzDzBlffBjYTyK4RD+ZDMNvWXClBrfvSRgaTUpLZ xIRgY025UBaersWkh964XyGLOarKj1M= Message-ID: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1760406169; h=from:from: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=EBF0Ps2ImCzZ4tZ3MrZ01lPp3rnT5K2J0edlyN1v5io=; b=INaU7l8+nLdnLaKBJrkREE4PEYNLcdAlPypw+HDjgAvWXi5r6uA0NTeuoAKSKy+xSMk1Ay WnCqeyQnda6EuoiIL7SVQ4MG9Jad+4HrKCZISBB+rXLdUyNsongpSuLEUqKgxd/4ZnP7HK OT7EB/j/yEn8rzpgIn1rwdY49db/oKE= Date: Tue, 14 Oct 2025 09:42:44 +0800 MIME-Version: 1.0 Subject: Re: [PATCH 1/3] mm: mprotect: always skip dma pinned folio in prot_numa_skip() To: Kefeng Wang Cc: Zi Yan , Baolin Wang , Ryan Roberts , Dev Jain , Barry Song , Liam.Howlett@oracle.com, Lorenzo Stoakes , Andrew Morton , David Hildenbrand , linux-mm@kvack.org References: <20251013121536.2373249-1-wangkefeng.wang@huawei.com> <20251013121536.2373249-2-wangkefeng.wang@huawei.com> Content-Language: en-US X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: Lance Yang In-Reply-To: <20251013121536.2373249-2-wangkefeng.wang@huawei.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Migadu-Flow: FLOW_OUT X-Stat-Signature: f5rc6m96amdqsjqxnrcdna3oaz6iqqwx X-Rspamd-Queue-Id: 4559940003 X-Rspamd-Server: rspam06 X-Rspam-User: X-HE-Tag: 1760406172-824162 X-HE-Meta: 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 rIHXHAwG O40vIU9rtSyIRkYDTsDu+n9xfCk4di9kqQZeNhocvqADOoYTPORKuCmXQEQTW1f1JiqrQ6Si3n23AOO+apyDjeExgU6nBfq8AgO4sE8swsYIl2zATOmK5G6TJLcWA4msoirzJchBPpsKGKPtrnioFP11JX97fOX3R1c9KJ4nEXAXwsEuq//DYYtpKdowlZuVGMhF3Y42Vfr14XusvVCXygIWxSsP/v88QWu9vCaLxT3v7oIYERNELdjh548tEMSWq9hhQOLxvJ3Qs6cdoBeGFmWLYd/VQzGHFsNJo4qT79qx4ZNswW9PBFuQhpA4ypXiTO3BVOQSKIZVT+0x8B9gm57UDww== 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 2025/10/13 20:15, Kefeng Wang wrote: > If the folio(even not CoW folio) is dma pinned, it can't be > migrated, so always skip pinned folio to avoid a waste of cycles > when folios migration. > > Signed-off-by: Kefeng Wang > --- LGTM. Reviewed-by: Lance Yang