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bh=6WJ9Pu74OAlot46PM38EuI7lj/TpOZqZHOu/KspnF9w=; b=W1O8m0315I48Dl+JTrJxTYwjPh kDwE18XwtobCnIu46KB5V8K+XdIF9blU9FLEx6Z/CUtRwuvwlK7EIjRJOp/U2RokLjuYsDUc+EK9A nfimd2rr1ixP67VA1b6iq0AQem8FkZBWCRemkJh/xJKc5BSQEWXqoWpFUu3xM3FAQdv0KEL/S88ZL MqGB6Ba/5/+nFYxL5X8qaGePByoHkb1zPLPLllmY27zF3BFkRZt+NhckJO0mENtUeaBXAwmmHSiRp tSqPaA6bDQr5EZPGHn6FIgh7BLY5gxMbfxZ/5TRBNricgjFxZVq5zuAiYmKsc5o4/73d2F7bwg1ka +bLW1/Ng==; Received: from mcgrof by bombadil.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1pM0PY-0014oo-UZ; Sun, 29 Jan 2023 05:39:28 +0000 Date: Sat, 28 Jan 2023 21:39:28 -0800 From: Luis Chamberlain To: Matthew Wilcox Cc: lsf-pc@lists.linux-foundation.org, Christoph Hellwig , David Howells , "kbus >> Keith Busch" , Pankaj Raghav , linux-fsdevel@vger.kernel.org, linux-mm@kvack.org Subject: Re: LSF/MM/BPF 2023 IOMAP conversion status update Message-ID: References: <20230129044645.3cb2ayyxwxvxzhah@garbanzo> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 96D8A20002 X-Stat-Signature: ynb4n3cz7nirxsecxfufuoaji9m8rk7p X-Rspam-User: X-HE-Tag: 1674970775-346840 X-HE-Meta: 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 Icu4eoCX AQM/xpnsSfin2jZv4VfUbaPmwLQAkREEPySzqnggCzL6zIL/tVSjca6yt2FGCmEiotIrcX1AKy4WV3Lvn+RaKUFv89+dilc4OFvY6SrUxZjnJgi3vJ0QyhilfEC2Hq321hncdamtYPbZFhR140J7G8PYCqktH1RPy7AIl8hlR9OcRE4t07OaK6JP8/WPCTvDpdZxkMxyAIO78rc8dpmw46tniAzTUx0oA39CwWPjdF7dReYEtw+BHa7rnS5rrRQYeRWKhe12AalhKu1TDuAdr86tJf18ayvUBKzp1XguiWXaE3n7SiTV6ADLGN3pobFA3j2yq X-Bogosity: Ham, tests=bogofilter, spamicity=0.001085, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Sun, Jan 29, 2023 at 05:06:47AM +0000, Matthew Wilcox wrote: > There's maybe a > separate discussion to be had for "What should the API be for filesystems > to access metadata on the block device" because I don't believe the > page-cache based APIs are easy for fs authors to use. OK sure, and *why* that would be good, yes sure. Perhaps that should be dicussed first though as then it I think may be easier to possibly celebrate IOMAP. > Maybe some related topics are > "What testing should we require for some of these ancient filesystems?" Oh yes.... > "Whose job is it to convert these 35 filesystems anyway, can we just > delete some of them?" > "Is there a lower-performance but easier-to-implement API than iomap > for old filesystems that only exist for compatibiity reasons?" Yes... Luis