linux-kernel - Re: [PATCH v11 0/9] Userspace P2PDMA with O

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Message-ID: <20221024150320.GA26731@lst.de>
Date:   Mon, 24 Oct 2022 17:03:20 +0200
From:   Christoph Hellwig <hch@....de>
To:     Logan Gunthorpe <logang@...tatee.com>
Cc:     linux-kernel@...r.kernel.org, linux-nvme@...ts.infradead.org,
        linux-block@...r.kernel.org, linux-pci@...r.kernel.org,
        linux-mm@...ck.org, Christoph Hellwig <hch@....de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Dan Williams <dan.j.williams@...el.com>,
        Jason Gunthorpe <jgg@...pe.ca>,
        Christian König <christian.koenig@....com>,
        John Hubbard <jhubbard@...dia.com>,
        Don Dutile <ddutile@...hat.com>,
        Matthew Wilcox <willy@...radead.org>,
        Daniel Vetter <daniel.vetter@...ll.ch>,
        Minturn Dave B <dave.b.minturn@...el.com>,
        Jason Ekstrand <jason@...kstrand.net>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Xiong Jianxin <jianxin.xiong@...el.com>,
        Bjorn Helgaas <helgaas@...nel.org>,
        Ira Weiny <ira.weiny@...el.com>,
        Robin Murphy <robin.murphy@....com>,
        Martin Oliveira <martin.oliveira@...eticom.com>,
        Chaitanya Kulkarni <ckulkarnilinux@...il.com>,
        Ralph Campbell <rcampbell@...dia.com>,
        Stephen Bates <sbates@...thlin.com>, viro@...iv.linux.org.uk
Subject: Re: [PATCH v11 0/9] Userspace P2PDMA with O_DIRECT NVMe devices

The series looks good to me know. How do we want to handle it?  I think
we need a special branch somewhere (maybe in the block or mm trees?)
so that we can base the other iov_iter work from John on it.  Also
Al has a whole bunch of iov_iter changes that we probably want on
the same branch as well, although some of those (READ vs WRITE fixups)
look like 6.1 material to me.