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Mon, 7 Jun 2021 20:01:23 +0900 (KST) Received: from epsmtrp1.samsung.com (unknown [182.195.40.13]) by epcas1p4.samsung.com (KnoxPortal) with ESMTPA id 20210607110122epcas1p4557bcbc7abac791f2557cc0d317214fd~GR9Hvvv0x2088020880epcas1p4Z; Mon, 7 Jun 2021 11:01:22 +0000 (GMT) Received: from epsmgms1p2.samsung.com (unknown [182.195.42.42]) by epsmtrp1.samsung.com (KnoxPortal) with ESMTP id 20210607110122epsmtrp16e2f431b0d99e066731e189dc28c3b99~GR9HuZjtn3235632356epsmtrp1V; Mon, 7 Jun 2021 11:01:22 +0000 (GMT) X-AuditID: b6c32a38-42fff70000002812-f2-60bdfc831fd2 Received: from epsmtip2.samsung.com ( [182.195.34.31]) by epsmgms1p2.samsung.com (Symantec Messaging Gateway) with SMTP id FF.E8.08163.28CFDB06; Mon, 7 Jun 2021 20:01:22 +0900 (KST) Received: from localhost.localdomain (unknown [10.253.99.105]) by epsmtip2.samsung.com (KnoxPortal) with ESMTPA id 20210607110122epsmtip2b92bf6c4921eac392a0d40221db4c9ee~GR9HWrwTd0048400484epsmtip2l; Mon, 7 Jun 2021 11:01:22 +0000 (GMT) From: Changheun Lee To: hch@infradead.org Cc: Johannes.Thumshirn@wdc.com, alex_y_xu@yahoo.ca, alim.akhtar@samsung.com, asml.silence@gmail.com, avri.altman@wdc.com, axboe@kernel.dk, bgoncalv@redhat.com, bvanassche@acm.org, cang@codeaurora.org, damien.lemoal@wdc.com, gregkh@linuxfoundation.org, jaegeuk@kernel.org, jejb@linux.ibm.com, jisoo2146.oh@samsung.com, junho89.kim@samsung.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org, martin.petersen@oracle.com, ming.lei@redhat.com, mj0123.lee@samsung.com, nanich.lee@samsung.com, osandov@fb.com, patchwork-bot@kernel.org, seunghwan.hyun@samsung.com, sookwan7.kim@samsung.com, tj@kernel.org, tom.leiming@gmail.com, woosung2.lee@samsung.com, yi.zhang@redhat.com, yt0928.kim@samsung.com Subject: Re: [PATCH v12 1/3] bio: control bio max size Date: Mon, 7 Jun 2021 19:42:48 +0900 Message-Id: <20210607104248.17035-1-nanich.lee@samsung.com> X-Mailer: git-send-email 2.29.0 In-Reply-To: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Brightmail-Tracker: H4sIAAAAAAAAA01Ta0xTZxjOd045p3XpduS2L8S4UiGOewsUPgQWEpg5zpmQwNyCS6DCSSGU 0rR087I5sjLuKxAISGmFIQFTmVVwDTBQxkXjBAnjzgbIgAkMkEHQgSgrLWT8ey/P8z7v8375 2LhtE+nETpKlMQqZWMonDrFMnW4CL/V2W5ygMdcV3fqjnkRPr5kIpDOYAFrYHCLQzYkCArX0 VwJUurqJozVjrQ36LusFhtTXjQR6XFiNoVmjFkfVoyYM5c9+a4Ne505iaGNaidrGPdBAi45A eSNNBKp7+AZDHcVqDJU16nA0PNVDos7JIRaarinC0ZNHazbo2kwY2qrrBuj5vyMk+rWpGEcj T0oJZGzbJMJ49MDgaXpA8z1GF6lXSLpZO0HSjTfc6YFeFd1gyCHowup2QN/X15P0P3PjLPr5 vSGC1tw1AHq94Sid1Z6H0R0dtXjkOzHSkERGnMAoeIwsPjUhSSYJ5Z+Oig2PFQUIhF7CIBTI 58nEKUwoP+LjSK+TSVLzvfi8L8RSlbkUKVYq+T4fhChSVWkMLzFVmRbKZ+QJUrlQIPdWilOU KpnEOz415YRQIPAVmZFx0sSlsTZMfpt1wdBbiqeDdjwXcNiQ8oeaP/vIXHCIbUs1AViRvQSs yRqAG78bCGuyDmB35QNyn1JU0bCHagGwILMf221YUH/3CHdjgvKEmuVxYje2pxzgZNmghYBT KzZwILeFtduwowJgyYTeErMoVzjbOmcGsdlcKhh2r0mtYu/B7al8y64cygv2d+ktMZc6DB+V z1qouBmj/qkC350Pqb848I6ugWUlR8Cs1cY9o3Zw8eHdPQdOcKEgk7QS8gBUZ1YCa1IIYM2z WsyK8oNr6+uWjXDKDRpbfKxlZ9j8Sg+sym/DlY18m10IpLgwO9PWCnGBPRlT+L7Wsx+b9ybS sPp+P269XDqAW1VVZCHgaQ8Y0h4wpP1fuQrgBuDIyJUpEkYplPsffOMGYPlC7qgJ6JdXvTsA xgYdALJxvj33oyOtcbbcBPHFS4wiNVahkjLKDiAyX7sId3KITzX/QVlarFDk6+fnh/wDAgNE fvx3uZLwy3G2lEScxiQzjJxR7PMwNscpHQs6N9J2rjHRM0U0efnWkZWF6MUHPM6XcCfwaXOA do560c531MVsdy5297vsxEQrnKXi3zSqT1xfD+hKOkM4F02nPu29UHabdX2RHP1h6tKrN6bz wxHhUzHHr0QH14VraYmdUT1zSj7aNb/zzWC5h+fI2a/LeuelreUFyWPHtru0w2fuXHWbvTJz PLTvBr3gs/l5xlS740sRqMkx7ARu6ZayxhrxkqiaCu/pY/NONgthZ8s9StaDnHMqDjsMhajf evzZzFdnRuz7m6LY5LaLX8pNfWbxtuP7Is1JlT5Y97OWW31+01dQn5F9tPmXHP1scnbXibIP w18ajaPLg30CcG+yjM9SJoqF7rhCKf4PjG5+cMsEAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrPIsWRmVeSWpSXmKPExsWy7bCSvG7Tn70JBpuny1usu7OG3eLBvG1s FnNWbWO0ePnzKpvF6rv9bBa7Ls5ntJj24Sezxaf1y1gtWtu/MVk0L17PZnF6wiImiyfrZzFb LLqxjcmi50kTq8XfrntMFl8fFlvsvaVtcXnXHDaL7us72CyWH//HZHFocjOTxfTNc5gtrt0/ w25x+N5VFouHSyYyW5w7+YnVYt5jB4tfy48yWrz/cZ3d4tSOycwW189NY7NYv/cnm4OCx+Ur 3h6X+3qZPCY2v2P32DnrLrvH5hVaHpfPlnpsWtXJ5jFh0QFGj/1z17B7fHx6i8Xj/b6rbB59 W1YxenzeJOfRfqCbyePQoWXMAfxRXDYpqTmZZalF+nYJXBlvbu5lKtjAUrHq7DTmBsYDzF2M nBwSAiYSE2dvYuxi5OIQEtjBKLHh1zd2iISUxPETb1m7GDmAbGGJw4eLIWo+Mkrs+f6TFaSG TUBHou/tLTYQW0RAVOLe9Ctgg5gFprFJbHtzC2yDsICZxJS7c1lAbBYBVYkne54yggzlFbCW OPopB2KXvMSf+z1g5ZwCuhIXj8wFs4WA5rdtm88IYvMKCEqcnPkEbAwzUH3z1tnMExgFZiFJ zUKSWsDItIpRMrWgODc9t9iwwCgvtVyvODG3uDQvXS85P3cTIzhNaGntYNyz6oPeIUYmDsZD jBIczEoivF4yexKEeFMSK6tSi/Lji0pzUosPMUpzsCiJ817oOhkvJJCeWJKanZpakFoEk2Xi 4JRqYKq7a8u6RLtkZfYE69yowMKcdunwgnSRnNBsidIH5ZXvaiwnJ/r9sj1pumNawrnFDUpf Cz7tivv5elatUMCdYpUpr5OXm5f/ruh5LK97sPW0jnSTLMtDZb8XE6uyzEPSnzx6qXTsZuTH 3fNb/JIOX7rqaO7+TNYoZ97Rx9+kfHyjMqSF96X1/tiut0Vy33ZJu4TWfpX/M16diW5j8Xv8 Nsip8U6f6eczPEvy9feY5qcKW6UwsURMWX+hM1Ogz08inCOa8VxmQcUbQ6sCuetv19wJuJwc w7NobfLKw2lFkal9C0RyJ634uPQIb2vJ9SRJr60busvZ2NT6pl45vF6dYxGrb4hYUdmesF4B ZwslluKMREMt5qLiRABLjTUTggMAAA== X-CMS-MailID: 20210607110122epcas1p4557bcbc7abac791f2557cc0d317214fd X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" X-Sendblock-Type: SVC_REQ_APPROVE CMS-TYPE: 101P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20210607110122epcas1p4557bcbc7abac791f2557cc0d317214fd References: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > NAK. As discussed countless time we already have an actual limit. > And we can look it as advisory before building ever bigger bios, > but the last thing we need is yet another confusing limit. Thank you for your review and feedback. I has thought proper bio size control with proper interface might be good, and can be helpful to the other module beside issued performance problem. Providing of common interface to control bio size in block layer might be good I think even though current patch is not accepted. Thanks for all, Changheun Lee