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charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: User-Agent: Mutt/1.5.17 (2007-11-01) X-Stat-Signature: n5tp8o46odjzarwqno4eagn6u3amngfs X-Rspam-User: X-Rspamd-Queue-Id: B56A3180004 X-Rspamd-Server: rspam01 X-HE-Tag: 1771397470-182228 X-HE-Meta: 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 lZiwTv/d Iyf80Gaqr90WSqVWYP0deBETt4EtdYLgNW+fQ2zAqfZXmBt7GQClbLjCwB8UxdsxnSyrbDt6Xmwtu3eURChvvNxxY5CopzProCTZ/CiFdkwROEnmyzlWJo1Hq7Lar1Hlnnmy77jozMAGUxeXcfaLhT/UpyLctv9N7Bpn4Mv5bnQfe8xpfiAG28tIZpoCx36TqAwtq X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Tue, Feb 17, 2026 at 10:23:36AM +0100, Amir Goldstein wrote: > On Tue, Feb 17, 2026 at 8:00 AM Christoph Hellwig wrote: > > > > I think a better session would be how we can help postgres to move > > off buffered I/O instead of adding more special cases for them. > > Respectfully, I disagree that DIO is the only possible solution. > Direct I/O is a legit solution for databases and so is buffered I/O > each with their own caveats. Maybe. Classic buffered I/O is not a legit solution for doing atomic I/Os, and if Postgres is desperate to use that, something like direct I/O (including the proposed write though semantics) are the only sensible choice.