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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A8E65C43458 for ; Fri, 3 Jul 2026 07:07:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:In-Reply-To:From:References:Cc:To:Subject:MIME-Version:Date: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=4piB+34XL+KRHk/H7cX5eonmByAQ55KhjuwPcounnz0=; b=D63VU97MOK1vCpFGLh8TajCjz6 LjemR96Wh/DqYstYOpLseUn0ZdsYFitp7YrLrvbvPRrJmXqujsDFiu7xldZS7cpCJ/boybrYnRC0z VXbLht8ZZ41t4pXm6lkk184A7ql7Q4Va/i0sySih6u0q6EmYTsJsB4Xk8j1Qo7ZCrRvPaBoAdCtCB J/K7K5XOOtuYeu0J1+lqn0Gb0zAXGG+JTvKPivVLQaBy3V2BnsjTZc6D7Hs72Ze1P3sp1I7UElmr8 /tWD5hw1G3AkyW5bcYTtR/WECpToxVicVqpPjbaUT2u48MSDeD8jJvb0aGPEKojplh7kTFw6jeZ7m 7eWMRQdA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wfXzG-00000006FOE-0hNi; Fri, 03 Jul 2026 07:06:58 +0000 Received: from sea.source.kernel.org ([172.234.252.31]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wfXzD-00000006FNt-3NbC for linux-arm-kernel@lists.infradead.org; Fri, 03 Jul 2026 07:06:55 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id 4D209413B7; Fri, 3 Jul 2026 07:06:55 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id F3A661F000E9; Fri, 3 Jul 2026 07:06:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1783062415; bh=4piB+34XL+KRHk/H7cX5eonmByAQ55KhjuwPcounnz0=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=DnR1vQWEy7SOqZOkad+cMz408hpbdEeW1rFEXVMkJQGbj0pIJMlUurDtkcAC66OqC Wn91EDTa/5pobK+HuZ4dbs4W1cVmDrqVT2hNGnm6F+uPv9+NGBnYLTWMTvIMOQrIDD xJt2AEWEa4WHkGrSnW7bZSGaXeW25aL664SlQ06qm7Yb/ZLHjmbLS2BRL+MavVdudO XeA4Thj0htfCJBSAkqepkMS1NmmYSIiblcXXhKKHdAIMmlcvuKYnGBkSklagStYqlk 0Qlp/bplhyrEH4j8SeqazuMtCQQkn/oLiJUqxsCXF8Mio8EBqpoVdQW4Dyx2cDgyGD ol27RsdpjMhYQ== Message-ID: <705431a4-c301-41df-87ab-c0b4a4069f97@kernel.org> Date: Fri, 3 Jul 2026 09:06:42 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 2/6] mm/rmap: use huge_ptep_get() in try_to_unmap_one() To: Dev Jain , muchun.song@linux.dev, osalvador@suse.de, akpm@linux-foundation.org, ljs@kernel.org, liam@infradead.org Cc: riel@surriel.com, vbabka@kernel.org, harry@kernel.org, jannh@google.com, lance.yang@linux.dev, kas@kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, rcampbell@nvidia.com, apopple@nvidia.com, ziy@nvidia.com, matthew.brost@intel.com, joshua.hahnjy@gmail.com, rakie.kim@sk.com, byungchul@sk.com, gourry@gourry.net, ying.huang@linux.alibaba.com, j-nomura@ce.jp.nec.com, nao.horiguchi@gmail.com, ak@linux.intel.com, mel@csn.ul.ie, pfalcato@suse.de, jpoimboe@kernel.org, dave.hansen@intel.com, tglx@kernel.org, catalin.marinas@arm.com, will@kernel.org, linux-arm-kernel@lists.infradead.org, ryan.roberts@arm.com, anshuman.khandual@arm.com, stable@vger.kernel.org References: <20260702051341.126509-1-dev.jain@arm.com> <20260702051341.126509-3-dev.jain@arm.com> <00d6e0fb-dcba-45d5-98c0-f5ed81604ca0@kernel.org> <1b1f6281-2a46-4811-bbea-24a666c0a772@arm.com> From: "David Hildenbrand (Arm)" Content-Language: en-US Autocrypt: addr=david@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org >>> diff --git a/mm/rmap.c b/mm/rmap.c >>> index 1c77d5dc06e9f..aa8a254efaecc 100644 >>> --- a/mm/rmap.c >>> +++ b/mm/rmap.c >>> @@ -2095,11 +2095,16 @@ static bool try_to_unmap_one(struct folio *folio, struct vm_area_struct *vma, >>> /* Unexpected PMD-mapped THP? */ >>> VM_BUG_ON_FOLIO(!pvmw.pte, folio); >>> >>> - /* >>> - * Handle PFN swap PTEs, such as device-exclusive ones, that >>> - * actually map pages. >>> - */ >> >> That comment now actually belongs above the pte_present() check below. > > Oops I mindlessly just copied the comment. > > I will then rather put it in the else block which gets the pfn from the softleaf, > that is the most appropriate. Works for me, thanks -- Cheers, David