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Wed, 6 Oct 2021 10:05:24 +0000 (GMT) Received: from eusmgms1.samsung.com (unknown [182.198.249.179]) by eusmtrp1.samsung.com (KnoxPortal) with ESMTP id 20211006100524eusmtrp1f259da37f2d056536891022ee35c0c12~raPzPegq41327913279eusmtrp1w; Wed, 6 Oct 2021 10:05:24 +0000 (GMT) X-AuditID: cbfec7f2-7d5ff7000002b2bc-04-615d74e51519 Received: from eusmtip1.samsung.com ( [203.254.199.221]) by eusmgms1.samsung.com (EUCPMTA) with SMTP id 84.78.31287.4E47D516; Wed, 6 Oct 2021 11:05:24 +0100 (BST) Received: from CAMSVWEXC01.scsc.local (unknown [106.1.227.71]) by eusmtip1.samsung.com (KnoxPortal) with ESMTPA id 20211006100524eusmtip128bb89f78867a5936408df4c49982d42~raPzBqDMU0572405724eusmtip1Y; Wed, 6 Oct 2021 10:05:24 +0000 (GMT) Received: from localhost (106.210.248.142) by CAMSVWEXC01.scsc.local (2002:6a01:e347::6a01:e347) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 6 Oct 2021 11:05:23 +0100 Date: Wed, 6 Oct 2021 12:05:23 +0200 From: Javier =?utf-8?B?R29uesOhbGV6?= To: Bart Van Assche CC: Johannes Thumshirn , Chaitanya Kulkarni , "linux-block@vger.kernel.org" , "linux-scsi@vger.kernel.org" , "linux-nvme@lists.infradead.org" , "dm-devel@redhat.com" , "lsf-pc@lists.linux-foundation.org" , "axboe@kernel.dk" , "msnitzer@redhat.com" , "martin.petersen@oracle.com" , "roland@purestorage.com" , "mpatocka@redhat.com" , "hare@suse.de" , "kbusch@kernel.org" , "rwheeler@redhat.com" , "hch@lst.de" , "Frederick.Knight@netapp.com" , "zach.brown@ni.com" , "osandov@fb.com" , Adam Manzanares , SelvaKumar S , Nitesh Shetty , "Kanchan Joshi" , Vincent Fu Subject: Re: [LSF/MM/BFP ATTEND] [LSF/MM/BFP TOPIC] Storage: Copy Offload Message-ID: <20211006100523.7xrr3qpwtby3bw3a@mpHalley.domain_not_set.invalid> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8"; format="flowed" Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: X-Originating-IP: [106.210.248.142] X-ClientProxiedBy: CAMSVWEXC01.scsc.local (2002:6a01:e347::6a01:e347) To CAMSVWEXC01.scsc.local (2002:6a01:e347::6a01:e347) X-Brightmail-Tracker: H4sIAAAAAAAAA02SfUxTZxTG9957e3tbBlwLC29Et6zTberE4czyRo3iZPE2pmTTDfeF0Iy7 SiyttrC5D7Wjxq3VCVYjWAIaolQoX2sVGaModYMh1Q0tExCrrmVT5ENK2cpG2dpezfjvd855 nvecJ3kpXGQg51I5yjxWrZQpxKSQaGyfurp0MC9D9nLQAJHlViGJjj2cwpHp5gMC2UdLechj /RdDLRVGDFVZfsRQ0ODGkNHxK0D2/iXoROUgHx240USi1gd2HJk7ZjB0+OseDF01TZPokruH QJZphKp+x9DQha0p8cx110bmsG6Uz1y/ks9Yq/UkYzu1lznSawbM931akinx+UnmhvM8xowP 9hNM491v+MxYa09I1vU5M2F9mvnq4gHsjdj3hKuzWUXOx6x62Zos4bbTjm58hzNqV6DgGE8L fhAYgICC9ArYfr8NGICQEtFnACz3XOZxhR/AuvGjWFgloicA9HnQY8dA8CafE5kBdBuGHxUh kct/+dFbZwFscBWBsIWgF8CGAS0ZZpJeC69V9uNhjqdfhH/eMRNhA06XU9B/u5kID56gWbhv uI0f5jhaApsaCiN3RNNSWFbcx+N4Duw87o3ocXol1D8sCPWpECdC8wzFtZ+BunOlkV0CehW8 dbs5IoH0c9BcLOXS7Ia17c5IAEifFsLAtW9JbpAKp+z1PI7j4FDHWT7H82DXkYMEZ9AB6Kxx 4VxxEMBp4xnAbVgFDzkVnGEdPH/0Ls61Y2DvyBzuthhobCzGi8BC06w0pllpTP+nMc1KcxIQ 1SCBzdfkyllNspL9JEkjy9XkK+VJH6pyrSD0XbtmOnxNoGxoPMkBMAo4AKRwcXy0am2GTBSd Lfv0M1atylTnK1iNAyRShDghurq0JlNEy2V57HaW3cGqH08xSjBXiwnu6ep/Nr2Z3brko2df aIhJ6NP/tIDZuCxjzDdi01eumZ+ir0u7uG61KqH8XpZIYtzQY07xSSzpu6L+kVQd9yXu6bRM irG0J7+Yx3re1wmlbYujbG63duFwb1vhhKven5pb9Jp8/6X+lj9obwny7V2OKl7a8pv93Pqc +96ynI6CpzqzuucvktYsSn69aES927b8+fVRryytNX2QuYk3Sqh2BrauRCXvDOj2TwalgjjF CVB75VBfZbPty/Sh7yRBZWxs4OSr+3QoNX3nW5Nl0pZ3S8ZNlurUC95AfK2uNVn899unNkxa PXV/VXiFUmJsRfedqrRfprzbmzWb5W56i2UPISY022TJi3G1RvYfXce2Jx0EAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFtrPKsWRmVeSWpSXmKPExsVy+t/xu7pPSmITDc5u07dYfbefzWLah5/M FrNuv2ax2PtuNqvF403/mSz2LJrEZLFy9VEmi79d95gsJh26xmix95a2xfxlT9ktuq/vYLPY 93ovs8Xy4/+YLCZ2XGWyODfrD5vF4XtXWSxW/7GwWPmMyeLV/jgHEY/LV7w9Jja/Y/e4fLbU Y9OqTjaPzUvqPSbfWM7osftmA5vHjE9f2Dyun9nO5PHx6S0Wj20Pe9k93u+7ClR2utrj8yY5 j/YD3UwB/FF6NkX5pSWpChn5xSW2StGGFkZ6hpYWekYmlnqGxuaxVkamSvp2NimpOZllqUX6 dgl6GUsPXWQuOMNd8aNpGmsD4xHOLkZODgkBE4k7f2+zdzFycQgJLGWUmPDkDRtEQkbi05WP 7BC2sMSfa11sEEUfGSW+dGxhhXC2MEo8v90JVsUioCKx4U4DWDebgL3EpWW3mEFsEQENiW8P lrOANDALzOOQ+HJ/FwtIgkEgVaLlzUGwZmEBT4kdG/qZQGxeAV+JudNvQm34wSRx4GYvG0RC UOLkzCdgzcwCFhIz559n7GLkALKlJZb/44AIy0s0b50NtphTwFri7v1drCAlEgLKEsun+0J8 Uyvx6v5uxgmMorOQDJ2FZOgshKGzkAxdwMiyilEktbQ4Nz232FCvODG3uDQvXS85P3cTIzAl bTv2c/MOxnmvPuodYmTiYDzEKMHBrCTCm28fmyjEm5JYWZValB9fVJqTWnyI0RQYXBOZpUST 84FJMa8k3tDMwNTQxMzSwNTSzFhJnHfr3DXxQgLpiSWp2ampBalFMH1MHJxSDUz5D4/J/m5b rutbZPpGbkurskns0fMnbDqaGqpe+l3fO19aV6GAJXCdy1RvDe5+yUhHvUL25sWKPhMsypmb mR+veLpuxbNXC9/b6slzXJYrn7OSu2vfmt0BHLcuvnVjeNVadFVCX7JDKqrP5tzfP9ujm5fE Fzb/bit4POdcAcM6+8baM+GH/8aJvZ88jW/qWsvqffMj06uUbwoJlX1b+yq859L1tslumz7f OuK0yjjqQk31kvvcMRuX/iyTW23O+T7WaNP7tyzfJnvd2rVDT8ZfWJ55WbTRG6bpuqw79lUy uCxmXRCwpWvl3L9K06JEpjCwnF3tzrsruPEQg3bMWcH3LDP1VDcHB3lMr1iVtk+JpTgj0VCL uag4EQABnR0A0gMAAA== X-CMS-MailID: 20211006100524eucas1p2a1686056cf4a213dc42af4da610ddb67 X-Msg-Generator: CA X-RootMTR: 20210928191342eucas1p23448dcd51b23495fa67cdc017e77435c X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20210928191342eucas1p23448dcd51b23495fa67cdc017e77435c References: <20210928191340.dcoj7qrclpudtjbo@mpHalley.domain_not_set.invalid> Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org On 30.09.2021 09:20, Bart Van Assche wrote: >On 9/28/21 12:13 PM, Javier González wrote: >>Since we are not going to be able to talk about this at LSF/MM, a few of >>us thought about holding a dedicated virtual discussion about Copy >>Offload. I believe we can use Chaitanya's thread as a start. Given the >>current state of the current patches, I would propose that we focus on >>the next step to get the minimal patchset that can go upstream so that >>we can build from there. >> >>Before we try to find a date and a time that fits most of us, who would >>be interested in participating? > >Given the technical complexity of this topic and also that the people who are >interested live in multiple time zones, I prefer email to discuss the technical >aspects of this work. My attempt to summarize how to implement copy offloading >is available here: https://protect2.fireeye.com/v1/url?k=ba7e5d9a-e5e564d5-ba7fd6d5-0cc47a30d446-07a47f3f53cbfe53&q=1&e=c3973bdc-b6fd-43fb-80e6-0c86cb6b4d5f&u=https%3A%2F%2Fgithub.com%2Fbvanassche%2Flinux-kernel-copy-offload. >Feedback on this text is welcome. Thanks for sharing this Bart. I agree that the topic is complex. However, we have not been able to find a clear path forward in the mailing list. What do you think about joining the call to talk very specific next steps to get a patchset that we can start reviewing in detail. I think that your presence in the call will help us all. What do you think?