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 lists.sourceforge.net (lists.sourceforge.net [216.105.38.7]) (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 A843CF3C98B for ; Tue, 24 Feb 2026 14:52:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.sourceforge.net; s=beta; h=Content-Transfer-Encoding:Content-Type:Cc: List-Subscribe:List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id: Subject:In-Reply-To:MIME-Version:References:Message-ID:To:From:Date:Sender: Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender :Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=YieE6Y1d8IivY+p9rkfXt/6U+9MWXPkTeOXbZFf3tWs=; b=PxXGCJOwm8k2h82y+IR7/IeD3n cNLj5Jsi9WMsY+M9emImYUCkwQP1WwvFUXMYCCp9gQLSYjcFOXfeF3Wt11io7x64ivW3cEtOn+hhT CdG921yqUUjQhhZrjjb8ZBAfnXYRTawzbbK9KVfQ62hQ/Uxo6g3JuXiAtNRs2oKJy/1U=; Received: from [127.0.0.1] (helo=sfs-ml-2.v29.lw.sourceforge.com) by sfs-ml-2.v29.lw.sourceforge.com with esmtp (Exim 4.95) (envelope-from ) id 1vutlj-0004l1-LW; Tue, 24 Feb 2026 14:52:12 +0000 Received: from [172.30.29.66] (helo=mx.sourceforge.net) by sfs-ml-2.v29.lw.sourceforge.com with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1vutli-0004kq-Rc for linux-f2fs-devel@lists.sourceforge.net; Tue, 24 Feb 2026 14:52:11 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sourceforge.net; s=x; h=In-Reply-To:Content-Type:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To:Content-Transfer-Encoding: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=6DClI93qihwRHAEImj5qgvQ8g34i9ldqeoCY4lZ+6So=; b=X94ygOJ/Zv0DauxOkYYvhEuVG+ fNTebhEilfxsLZNEzBdV0x6kmbWEImZITa8NCcklrHscywTimWXoPKGeAK5au6Xwe2SIpApykvA0a T3TZ/0daWJHL03/8Qgt95bcT/iQXJEnGC7agfp0R+kOSBAd+z479ou6P4ut+i1j+TAew=; DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sf.net; s=x ; h=In-Reply-To:Content-Type:MIME-Version:References:Message-ID:Subject:Cc:To :From:Date:Sender:Reply-To:Content-Transfer-Encoding:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=6DClI93qihwRHAEImj5qgvQ8g34i9ldqeoCY4lZ+6So=; b=VntBmP+HR/AfuAjzibEpzfTupn FCSwNMJ2XO7KOwMvk0YtIts0OwqLSXsIKDM8tlCXCJDAFplA+6wtT6PyWCVD9k3I2yBUK03Squ5cc OvoNBuVwehTPyIVj3SqdVHECJpIs0QsSsOgUYIHM1gc5NOYsf9E2rbUkiZzgZFsu0vLY=; Received: from verein.lst.de ([213.95.11.211]) by sfi-mx-2.v28.lw.sourceforge.com with esmtps (TLS1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.95) id 1vutli-0002DW-Ql for linux-f2fs-devel@lists.sourceforge.net; Tue, 24 Feb 2026 14:52:11 +0000 Received: by verein.lst.de (Postfix, from userid 2407) id 2604668BEB; Tue, 24 Feb 2026 15:51:57 +0100 (CET) Date: Tue, 24 Feb 2026 15:51:56 +0100 From: Christoph Hellwig To: Eric Biggers Message-ID: <20260224145156.GA13173@lst.de> References: <20260221204525.30426-1-ebiggers@kernel.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20260221204525.30426-1-ebiggers@kernel.org> User-Agent: Mutt/1.5.17 (2007-11-01) X-Headers-End: 1vutli-0002DW-Ql Subject: Re: [f2fs-dev] [PATCH] fsverity: add dependency on 64K or smaller pages X-BeenThere: linux-f2fs-devel@lists.sourceforge.net X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: fsverity@lists.linux.dev, Andrey Albershteyn , Arnd Bergmann , "Darrick J. Wong" , linux-f2fs-devel@lists.sourceforge.net, linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org, Christoph Hellwig , linux-btrfs@vger.kernel.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net On Sat, Feb 21, 2026 at 12:45:25PM -0800, Eric Biggers wrote: > Currently, all filesystems that support fsverity (ext4, f2fs, and btrfs) > cache the Merkle tree in the pagecache at a 64K aligned offset after the > end of the file data. This offset needs to be a multiple of the page > size, which is guaranteed only when the page size is 64K or smaller. > > 64K was chosen to be the "largest reasonable page size". But it isn't > the largest *possible* page size: the hexagon and powerpc ports of Linux > support 256K pages, though that configuration is rarely used. > > For now, just disable support for FS_VERITY in these odd configurations > to ensure it isn't used in cases where it would have incorrect behavior. Do we want to throw in the towel here for the forseable future and if we ever need to support fsverity on > 64k page size just do a on-disk version rev? Because if so we could just simply the pending xfs fsverity support to drop all the offset adjustment and simplify it a lot.. _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel