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 139DFC282EC for ; Tue, 18 Mar 2025 06:48:14 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 3CD98280002; Tue, 18 Mar 2025 02:48:12 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 37D92280001; Tue, 18 Mar 2025 02:48:12 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 26F6D280002; Tue, 18 Mar 2025 02:48:12 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0017.hostedemail.com [216.40.44.17]) by kanga.kvack.org (Postfix) with ESMTP id 09C64280001 for ; Tue, 18 Mar 2025 02:48:12 -0400 (EDT) Received: from smtpin15.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay01.hostedemail.com (Postfix) with ESMTP id D54F71C984D for ; Tue, 18 Mar 2025 06:48:13 +0000 (UTC) X-FDA: 83233742466.15.1B07227 Received: from verein.lst.de (verein.lst.de [213.95.11.211]) by imf08.hostedemail.com (Postfix) with ESMTP id E66EA160013 for ; Tue, 18 Mar 2025 06:48:11 +0000 (UTC) Authentication-Results: imf08.hostedemail.com; dkim=none; dmarc=none; spf=pass (imf08.hostedemail.com: domain of hch@lst.de designates 213.95.11.211 as permitted sender) smtp.mailfrom=hch@lst.de ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1742280492; 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: in-reply-to:in-reply-to:references:references; bh=SmTits9d7gn1XsIEBS26W9HXC8EUcteG4OU6yo1OtB8=; b=znbSvJK/A6Xy80/vd52aueBWBpB1B4I254wQp8SlvF4cOUmCz+21twyPatmXGlVQseZj45 xvBKWZSn9x+sGuI7oNtE4P6ud1HwmukVgA8DfM63eORQqmETj8NrrvdzC5Sn/Fo+WAanf6 LkGDMwurTcRdLrdsLikXt847RGoDAiU= ARC-Authentication-Results: i=1; imf08.hostedemail.com; dkim=none; dmarc=none; spf=pass (imf08.hostedemail.com: domain of hch@lst.de designates 213.95.11.211 as permitted sender) smtp.mailfrom=hch@lst.de ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1742280492; a=rsa-sha256; cv=none; b=j74yH3kmgO76Ri5KTzuZN0z5tigcx5BlmgItKoqYDidBwlgVUHaxXiPJSskjkpGQ0k8cx+ Ikjtfd2O50WQYJq3B/OQKLNesVKAnXiRoSYEIpRsSm289z77wRw6Bi7N8X+dAT4f83hiFI iDdpNJv6d7PFxmBtdySiHj6aO9FZBxg= Received: by verein.lst.de (Postfix, from userid 2407) id BE85268AA6; Tue, 18 Mar 2025 07:48:05 +0100 (CET) Date: Tue, 18 Mar 2025 07:48:05 +0100 From: Christoph Hellwig To: Huan Yang Cc: hch@lst.de, akpm@linux-foundation.org, bingbu.cao@linux.intel.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, lorenzo.stoakes@oracle.com, opensource.kernel@vivo.com, rppt@kernel.org, ryan.roberts@arm.com, urezki@gmail.com, ziy@nvidia.com Subject: Re: [PATCH] mm/vmalloc: fix mischeck pfn valid in vmap_pfns Message-ID: <20250318064805.GA16121@lst.de> References: <20250317055304.GB26662@lst.de> <5a12454c-16a1-4400-a764-f49293d8dece@vivo.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <5a12454c-16a1-4400-a764-f49293d8dece@vivo.com> User-Agent: Mutt/1.5.17 (2007-11-01) X-Rspam-User: X-Rspamd-Queue-Id: E66EA160013 X-Rspamd-Server: rspam08 X-Stat-Signature: pchps5p1rx5dxrntb5ejrc1ezppndo73 X-HE-Tag: 1742280491-25706 X-HE-Meta: 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 7i5LOASj NqD6IkQM/MmJaEqErJfwYHoArFdPhFFBTfbpTzL+lVtlAr2P09paWrWD6SSu35AGQ+Ck+j+BPsWqxuz1OLHPDCbI4GRzYjzaiT1A/I0NmsZAdRF9rMdy+G8CM9A== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000011, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: So you want a folio based version of vmap. Please work on that instead of doing crazy hacks using vmap_pfns which is just for memory not historically backed by pages and now folios.