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Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1pXwQD-002s1p-Pz; Fri, 03 Mar 2023 03:49:29 +0000 Date: Fri, 3 Mar 2023 03:49:29 +0000 From: Matthew Wilcox To: Keith Busch Cc: Luis Chamberlain , Theodore Ts'o , lsf-pc@lists.linux-foundation.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-block@vger.kernel.org Subject: Re: [LSF/MM/BPF TOPIC] Cloud storage optimizations Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspam-User: X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: 1BC2418000F X-Stat-Signature: 9uowfnamqis3yfaajkfc67fctj98kdtp X-HE-Tag: 1677815380-852294 X-HE-Meta: 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 X0dE+0gy gkcQxvR7IoLRQbGVszQMZDIwGz3BqiO8VlQfgRJ3SB8MzV8eTRCrzja959BudPiJ8pl1aVki5PiRcUZGHM1s3cFxRmN55fO+DBEzWeFlHppv6CxmGUJi5JHdvt1nuBu0wViiwKG9NRTF40BM4rnv820hwaA== X-Bogosity: Ham, tests=bogofilter, spamicity=0.014971, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Thu, Mar 02, 2023 at 06:58:58PM -0700, Keith Busch wrote: > That said, I was hoping you were going to suggest supporting 16k logical block > sizes. Not a problem on some arch's, but still problematic when PAGE_SIZE is > 4k. :) I was hoping Luis was going to propose a session on LBA size > PAGE_SIZE. Funnily, while the pressure is coming from the storage vendors, I don't think there's any work to be done in the storage layers. It's purely a FS+MM problem.