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Thu, 17 Oct 2024 15:09:05 +0900 (KST) Received: from green245 (unknown [107.99.41.245]) by epsmtip2.samsung.com (KnoxPortal) with ESMTPA id 20241017060904epsmtip2c8dae186b8b4c86dcef2a7fe1faeb490~-KIeApd6C1460314603epsmtip2f; Thu, 17 Oct 2024 06:09:04 +0000 (GMT) Date: Thu, 17 Oct 2024 11:31:23 +0530 From: Anuj Gupta To: Keith Busch Cc: hch@lst.de, axboe@kernel.dk, linux-block@vger.kernel.org, linux-nvme@lists.infradead.org, martin.petersen@oracle.com, Keith Busch Subject: Re: [PATCH] blk-integrity: remove seed for user mapped buffers Message-ID: <20241017060123.GA8191@green245> MIME-Version: 1.0 In-Reply-To: <20241016201309.1090320-1-kbusch@meta.com> User-Agent: Mutt/1.9.4 (2018-02-28) X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrIJsWRmVeSWpSXmKPExsWy7bCmhq7LcYF0gy3T+C1W3+1ns1i5+iiT xaRD1xgtzlxdyGKx95a2xfxlT9ktlh//x+TA7nH5bKnHplWdbB6bl9R77L7ZwOZx7mKFx8en t1g8Pm+SC2CPyrbJSE1MSS1SSM1Lzk/JzEu3VfIOjneONzUzMNQ1tLQwV1LIS8xNtVVy8QnQ dcvMATpGSaEsMacUKBSQWFyspG9nU5RfWpKqkJFfXGKrlFqQklNgUqBXnJhbXJqXrpeXWmJl aGBgZApUmJCd8fv0IfaCZWwVX9/0MTYw7mHtYuTkkBAwkbg84xF7FyMXh5DAbkaJb++XMUI4 nxglDjZvZ4Nzrl/+xgjTsqhxB1TLTkaJ81vmgc0SEnjGKLGxwxXEZhFQlTjTeZMFxGYTUJc4 8rwVrFlEQFHiPDAoQJqZBeYySvxc8BisSFjAXeLp2g42EJtXQEfi7IoeRghbUOLkzCdgNZwC 5hLzV+5mB7FFBZQlDmw7zgQySELgL7tE344WJojzXCTuf3jIDmELS7w6vgXKlpL4/G4vG4Sd LvHj8lOo+gKJ5mP7oF6zl2g91c/cxcgBdF2GxKflahBhWYmpp9aBlTML8En0/n4C1corsWMe jK0k0b5yDpQtIbH3XAOU7SHxve0EKyS0uhglbi+cxzaBUX4Wkt9mIaybBbZCR2LB7k9sEGFp ieX/OCBMTYn1u/QXMLKuYpRMLSjOTU8tNi0wzksth0d4cn7uJkZwWtXy3sH46MEHvUOMTByM hxglOJiVRHgndfGmC/GmJFZWpRblxxeV5qQWH2I0BcbVRGYp0eR8YGLPK4k3NLE0MDEzMzOx NDYzVBLnfd06N0VIID2xJDU7NbUgtQimj4mDU6qBaeJeqaqFs7bysS9quna+k2nHCgOzm5Ja M2//WGPx+8DLeGeXF6dE9Cz8tuVX+e3w29TxdcdqLWYeacbE6FfBl+Sc8m9typJaZ3xd6pXr 8sfnlPiNf65ZenS3cNVlBYGTaf+WxVx7obXxis0LletXJBb3CMZ9Pfg8Nvrl/SC+Y+s3X5WR nSF20+U05+7bdo3uyhGfOrh3yGx7kzPffK61bPmWL34H5rN8WaUzc3felLJUJ6vzmlyfoh0E Jy+rWcH0Pm/L4ucmBlMDeBJ0+phDQ/ZtbWtQTrhtc1lqf/iWufKn+3OudH2oSBDbkcJdmvSR S016O8evINFfqi42R+Lta7bsLG1s+fJyz/mL7tzem5RYijMSDbWYi4oTAcRpVEE0BAAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrALMWRmVeSWpSXmKPExsWy7bCSvC7jKoF0g8NdMhar7/azWaxcfZTJ YtKha4wWZ64uZLHYe0vbYv6yp+wWy4//Y3Jg97h8ttRj06pONo/NS+o9dt9sYPM4d7HC4+PT WywenzfJBbBHcdmkpOZklqUW6dslcGXcO+hY8Iy5YvOBk8wNjFOZuxg5OSQETCQWNe5g72Lk 4hAS2M4o8X/aEzaIhITEqZfLGCFsYYmV/55DFT1hlNj18g47SIJFQFXiTOdNFhCbTUBd4sjz VrAGEQFFifNA54A0MAvMZZRYcWchE0hCWMBd4unaDrANvAI6EmdX9DBCTO1ilJhy8DMrREJQ 4uTMJ2BTmQW0JG78ewnUzAFkS0ss/8cBEuYUMJeYv3I32BGiAsoSB7YdZ5rAKDgLSfcsJN2z ELoXMDKvYhRNLSjOTc9NLjDUK07MLS7NS9dLzs/dxAiOBK2gHYzL1v/VO8TIxMF4iFGCg1lJ hHdSF2+6EG9KYmVValF+fFFpTmrxIUZpDhYlcV7lnM4UIYH0xJLU7NTUgtQimCwTB6dUA5P/ CokzhVdufrtuketd23K8WHaVscSPG9YdQv9/WU4VEvgpedpL6s6/6cf2HjrrUXK8z8I4TUeh UO0TM0PSNI83oV+3bvKt5mytnbnLfqtQjNduCb6vXt1fNjOzvq8tKuY+wlC4Z9e0vMbv3tEM yd/Ee+5PqPMSfjNvgu7H2y0nDkSoXrnY6TQjJJ93kogzW8GLpZ+b/y/uzFyw+9SJ/xze7nZz zNM1K5/t3dwl7xvWkHDT1zmT0aFM58LvFee5F6mtrc9f3POHV724jz+19fkK6Q+T1vN7b1Rp EumvOFzH5JmTz7c0tdHzfeuqbAOtw1LzFm7nr7g7b8o1sfeHvi9d1au66aaSa9KT3D4WLiWW 4oxEQy3mouJEAO+aI6/zAgAA X-CMS-MailID: 20241017060905epcas5p35f250dd9dd49791b4e58c143dc5fbc00 X-Msg-Generator: CA Content-Type: multipart/mixed; boundary="----w5-2f3KIOrSunQhSxAIo7Dy_B_SBAQB3Xz8aCSUoiMSFB8w5=_4e3a1_" X-Sendblock-Type: REQ_APPROVE CMS-TYPE: 105P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20241016201330epcas5p33226adcbff73f7df7cced504aea64a13 References: <20241016201309.1090320-1-kbusch@meta.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241017_011410_949239_6DF60EEB X-CRM114-Status: GOOD ( 13.25 ) X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org ------w5-2f3KIOrSunQhSxAIo7Dy_B_SBAQB3Xz8aCSUoiMSFB8w5=_4e3a1_ Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline On Wed, Oct 16, 2024 at 01:13:09PM -0700, Keith Busch wrote: > From: Keith Busch > > The seed is only used for kernel generation and verification. That > doesn't happen for user buffers, so passing the seed around doesn't > accomplish anything. > Not for nvme passthrough, but all this code is needed for io_uring metadata series. Please see the need/justifcation [*]. [*] https://lore.kernel.org/linux-block/20241017054900.alfiqn3o37f4kkxb@green245/ ------w5-2f3KIOrSunQhSxAIo7Dy_B_SBAQB3Xz8aCSUoiMSFB8w5=_4e3a1_ Content-Type: text/plain; charset="utf-8" ------w5-2f3KIOrSunQhSxAIo7Dy_B_SBAQB3Xz8aCSUoiMSFB8w5=_4e3a1_--