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Petersen" , Kanchan Joshi , hare@suse.de, sagi@grimberg.me, brauner@kernel.org, viro@zeniv.linux.org.uk, jack@suse.cz, jaegeuk@kernel.org, bcrl@kvack.org, dhowells@redhat.com, bvanassche@acm.org, asml.silence@gmail.com, linux-nvme@lists.infradead.org, linux-fsdevel@vger.kernel.org, io-uring@vger.kernel.org, linux-block@vger.kernel.org, linux-aio@kvack.org, gost.dev@samsung.com, vishak.g@samsung.com Subject: Re: [PATCH v7 0/3] FDP and per-io hints Message-ID: <20241009162826.cpmb56rj4groafaq@ubuntu> Precedence: bulk X-Mailing-List: io-uring@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 In-Reply-To: <20241009092828.GA18118@lst.de> X-Brightmail-Tracker: H4sIAAAAAAAAA01Te0xTVxjP6b29vZV03BWmhzKRFLYpCLRYyoGBMxkhN4NlZPyxxAxZAzfl Wbq2jKHZZMw67WA4Aigd46HLkMIkPGSI1ADCiAoSlVERMAxKhjwKwpQxHKzllsX/ft/vke98 35dDYsICnohMVekYjUqRISZ24W03D+wPiGkilJKxUS9UYWoDqH6iiECGzVYczd9cAahseR1D tvwNHI12XeOgzovFHFRX38dBNv1dHP1w/msOsjYaMTQ9vspDfVuLBCruGQGopCwfIPMjf9Rp voWjqp9neKi2f5ODrswv4Wjo334uGjJW8I7soR8Mx9DXjBM8euhxE04/GMymm01nCbp5pZhH t/x0kr4+mkfQT2ce4fTSjd8J+rtWE6AHqnvt4p0T9GqzF91sXeTEuR5Nj0hhFMmMxptRJWUl p6qUkeKY+MR3E0PkEmmANAyFir1VikwmUhwVGxcQnZph34HY+zNFRradilNoteKgwxGarGwd 452SpdVFihl1coZapg7UKjK12SploIrRhUslkuAQu/GT9JRywxxXfcrl816TNg9U8w2AT0JK Bpcsa5gB7CKF1HUAa7cauGyxAuD5yicctngO4GD7CrYTMcxW8ljBDODDvDOALawAlv/zt91F kjjlCycv7XZAgvKHd7ZIR9adEsOZucFtO0aN4XBkcAA4BDdKApfWCgmHX2Bv0H41zkELqFfh rXIr7sB86iDsu2QmHFlI1fOhzTrCYx8UBetvXCZY7Abn+ludvAiu2sxOPgfWlVx2hk8BaLQY ASu8A/W3i7Ynw6gUOFVXjLP8Xlh6+wqH5V+BhRtWDssLYHvlDvaBDY3VzgYecGTtKyem4dB4 mXN13Ri0tOiJc8DL+NJExpf6sTgcnl3O5xrtC8AoT1i7SbLwAGzsCKoGXBPwYNTaTCWjDVEf UjE5/x85KSuzGWx/C7+YdjA1uRzYAzgk6AGQxMTugoAarlIoSFbkHmc0WYma7AxG2wNC7Pf5 HhO9lpRl/1cqXaJUFiaRyeVyWdghuVS8RzCv/zFZSCkVOiadYdSMZifHIfmiPM63Itd94O3X Ozxyf4vy6U2Y8SoqsB27+MuU9a9NzzTcx2Tp2C30E/mkpl2dj20nLXeVvrqPultkCS79ZSgz bXHiTOQfFSVPCJlVPzpc+sWJ92yzVYlHsO5vZvvdUORjvQpY5ldSImDyvWHZwcXCXp3XdNf4 r+sD5vfTT9csyITkB/y3gnQz9UNHuB013V2Sc4HrBe74/cPBb65PhCty9754w+3FqCu5v8ql IJraeDijuzB29Jn/6aep0S7Hn3u69oN78fuOyT9ekPqHFFF/mjXBOaYL90+WfprfRDbaPgyd i51sC6i1JIT6TjcsjD3zjy8ngXdwp9WwWhXBfCnKg2ViXJuikPphGq3iP82l/9qfBAAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrDIsWRmVeSWpSXmKPExsWy7bCSvK7gRrZ0gy97dSzmrNrGaLH6bj+b Rde/LSwWrw9/YrSY9uEns8W7pt8sFjcP7GSy2LNoEpPFytVHmSzetZ5jsZg9vZnJ4sn6WcwW j+98Zrc4+v8tm8WkQ9cYLaZMa2K02HtL22LP3pMsFvOXPWW3WH78H5PFutfvWSzO/z3OanF+ 1hx2B3GPy1e8PXbOusvucf7eRhaPy2dLPTat6mTz2PRpErvH5iX1HrtvNrB5fHx6i8Xj/b6r bB59W1YxepxZcAQoebra4/MmOY9NT94yBfBHcdmkpOZklqUW6dslcGX8b5nMXLCNo+LMo3a2 BsY3bF2MnBwSAiYSXS/msXcxcnEICexmlPi7/zJUQlJi2d8jzBC2sMTKf8/ZQWwhgUeMEv1t OV2MHBwsAioSDxaLgZhsAtoSp/9zgFSICChJPH11lhFkJLPAfRaJt83TwcYICxhIvP/eywZS zwu0d8fWAIi1h5klPs6dATaeV0BQ4uTMJywgNrOAmcS8zQ+ZQeqZBaQllv8Dm88poCNxdPFe tgmMArOQdMxC0jELoWMBI/MqRsnUguLc9NxiwwKjvNRyveLE3OLSvHS95PzcTYzgCNfS2sG4 Z9UHvUOMTByMhxglOJiVRHh1F7KmC/GmJFZWpRblxxeV5qQWH2KU5mBREuf99ro3RUggPbEk NTs1tSC1CCbLxMEp1cAk9qlPMYg1+7xQj/Uk70MvrW14WxsF5scXcig4bj1zcY2nR53fo01M jL1px5hszbRXl68Jn+/AmO4XefbvuVjT5RNq1FnMPgkbnJhvdL75+LxPJwtydB8fM94mV9XP UsZ17nzg4na1wuDZXL27In7si9o+P3jyNEaTXuaz2b0rZ93cvMloQujW++J/c8/0PCy0Kmhe 9MSpo33ZgTUuezrdDp+Ye+qd8g2xaBOXE6br0pVP3Pt6wEpU5oPr80ch5/P8+RT8nEPkPTSV 3AX+/ZPYbPHJavrFsyzdPm03Bfa+67mRtjZgs+vX4H253FOMFI7POeNpsPTZuT339gs4OXGe LF+4s+ln74kbUvfz1R8rsRRnJBpqMRcVJwIABjvMN18DAAA= X-CMS-MailID: 20241009163633epcas5p1720534b46ce90de022aec84f7ae70099 X-Msg-Generator: CA Content-Type: multipart/mixed; boundary="----w5-2f3KIOrSunQhSxAIo7Dy_B_SBAQB3Xz8aCSUoiMSFB8w5=_2bc10_" X-Sendblock-Type: REQ_APPROVE CMS-TYPE: 105P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20241004053129eucas1p2aa4888a11a20a1a6287e7a32bbf3316b References: <20241004053121.GB14265@lst.de> <20241004061811.hxhzj4n2juqaws7d@ArmHalley.local> <20241004062733.GB14876@lst.de> <20241004065233.oc5gqcq3lyaxzjhz@ArmHalley.local> <20241004123027.GA19168@lst.de> <20241007101011.boufh3tipewgvuao@ArmHalley.local> <20241008122535.GA29639@lst.de> <20241009092828.GA18118@lst.de> ------w5-2f3KIOrSunQhSxAIo7Dy_B_SBAQB3Xz8aCSUoiMSFB8w5=_2bc10_ Content-Type: text/plain; charset="utf-8"; format="flowed" Content-Disposition: inline On 09/10/24 11:28AM, Christoph Hellwig wrote: >On Tue, Oct 08, 2024 at 08:44:28AM -0600, Keith Busch wrote: >> Then let's just continue with patches 1 and 2. They introduce no new >> user or kernel APIs, and people have already reported improvements using >> it. > >They are still not any way actually exposing the FDP functionality >in the standard though. How is your application going to align >anything to the reclaim unit? Or is this another of the cases where >as a hyperscaler you just "know" from the data sheet? I think Keith already[1] mentioned a couple of times in previous replies, this is an optional feature, if experiments doesn't give better results, FDP hints can be disabled. > >But also given that the submitter completely disappeared and refuses >to even discuss his patches I thing they are simply abandonware at >this point anyway. Kanchan is away due to personal reasons, he is expected to be back in a week or so. Regards, Nitesh Shetty [1] https://lore.kernel.org/all/ZmjSwfD1IqX-ADtL@kbusch-mbp.dhcp.thefacebook.com/ ------w5-2f3KIOrSunQhSxAIo7Dy_B_SBAQB3Xz8aCSUoiMSFB8w5=_2bc10_ Content-Type: text/plain; charset="utf-8" ------w5-2f3KIOrSunQhSxAIo7Dy_B_SBAQB3Xz8aCSUoiMSFB8w5=_2bc10_--