Re: [PATCH v4 16/23] iov_iter: introduce iov_iter_get_pages_[alloc_]flags()

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To: Logan Gunthorpe <logang@xxxxxxxxxxxx>
Subject: Re: [PATCH v4 16/23] iov_iter: introduce iov_iter_get_pages_[alloc_]flags()
From: Christoph Hellwig <hch@xxxxxx>
Date: Tue, 21 Dec 2021 10:04:41 +0100
Cc: linux-kernel@xxxxxxxxxxxxxxx, linux-nvme@xxxxxxxxxxxxxxxxxxx, linux-block@xxxxxxxxxxxxxxx, linux-pci@xxxxxxxxxxxxxxx, linux-mm@xxxxxxxxx, iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx, Stephen Bates <sbates@xxxxxxxxxxxx>, Christoph Hellwig <hch@xxxxxx>, Dan Williams <dan.j.williams@xxxxxxxxx>, Jason Gunthorpe <jgg@xxxxxxxx>, Christian König <christian.koenig@xxxxxxx>, John Hubbard <jhubbard@xxxxxxxxxx>, Don Dutile <ddutile@xxxxxxxxxx>, Matthew Wilcox <willy@xxxxxxxxxxxxx>, Daniel Vetter <daniel.vetter@xxxxxxxx>, Jakowski Andrzej <andrzej.jakowski@xxxxxxxxx>, Minturn Dave B <dave.b.minturn@xxxxxxxxx>, Jason Ekstrand <jason@xxxxxxxxxxxxxx>, Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>, Xiong Jianxin <jianxin.xiong@xxxxxxxxx>, Bjorn Helgaas <helgaas@xxxxxxxxxx>, Ira Weiny <ira.weiny@xxxxxxxxx>, Robin Murphy <robin.murphy@xxxxxxx>, Martin Oliveira <martin.oliveira@xxxxxxxxxxxxx>, Chaitanya Kulkarni <ckulkarnilinux@xxxxxxxxx>
In-reply-to: <20211117215410.3695-17-logang@deltatee.com>
References: <20211117215410.3695-1-logang@deltatee.com> <20211117215410.3695-17-logang@deltatee.com>
User-agent: Mutt/1.5.17 (2007-11-01)

All these new helpers should be _GPL exports, keeping the existing
ones (which should never have been non-GPL exports as tiny wrappers
around GUP-fast) as out of line wrappers.

References:
- [PATCH v4 00/23] Userspace P2PDMA with O_DIRECT NVMe devices
  - From: Logan Gunthorpe
- [PATCH v4 16/23] iov_iter: introduce iov_iter_get_pages_[alloc_]flags()
  - From: Logan Gunthorpe

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