Re: [RFC PATCH 2/7] block: don't merge different kinds of P2P transfers in a single bio

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Subject: Re: [RFC PATCH 2/7] block: don't merge different kinds of P2P transfers in a single bio
From: Christoph Hellwig <hch@xxxxxx>
Date: Mon, 4 Nov 2024 09:56:42 +0100
Cc: Leon Romanovsky <leon@xxxxxxxxxx>, Jens Axboe <axboe@xxxxxxxxx>, Jason Gunthorpe <jgg@xxxxxxxx>, Robin Murphy <robin.murphy@xxxxxxx>, Joerg Roedel <joro@xxxxxxxxxx>, Will Deacon <will@xxxxxxxxxx>, Christoph Hellwig <hch@xxxxxx>, Sagi Grimberg <sagi@xxxxxxxxxxx>, Keith Busch <kbusch@xxxxxxxxxx>, Bjorn Helgaas <bhelgaas@xxxxxxxxxx>, Logan Gunthorpe <logang@xxxxxxxxxxxx>, Yishai Hadas <yishaih@xxxxxxxxxx>, Shameer Kolothum <shameerali.kolothum.thodi@xxxxxxxxxx>, Kevin Tian <kevin.tian@xxxxxxxxx>, Alex Williamson <alex.williamson@xxxxxxxxxx>, Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>, Jérôme Glisse <jglisse@xxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Jonathan Corbet <corbet@xxxxxxx>, linux-doc@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-block@xxxxxxxxxxxxxxx, linux-rdma@xxxxxxxxxxxxxxx, iommu@xxxxxxxxxxxxxxx, linux-nvme@xxxxxxxxxxxxxxxxxxx, linux-pci@xxxxxxxxxxxxxxx, kvm@xxxxxxxxxxxxxxx, linux-mm@xxxxxxxxx
In-reply-to: <f80e7b54-b897-4df2-a49d-bc6012640a8a@linux.dev>
References: <cover.1730037261.git.leon@kernel.org> <34d44537a65aba6ede215a8ad882aeee028b423a.1730037261.git.leon@kernel.org> <f80e7b54-b897-4df2-a49d-bc6012640a8a@linux.dev>
User-agent: Mutt/1.5.17 (2007-11-01)

On Sat, Nov 02, 2024 at 08:39:35AM +0100, Zhu Yanjun wrote

<full quote delete>

If you have something useful to say, please quote the mail you are
replying to to the context required to make sense.

Ignored for now.

References:
- [RFC PATCH 0/7] Block and NMMe PCI use of new DMA mapping API
  - From: Leon Romanovsky
- [RFC PATCH 2/7] block: don't merge different kinds of P2P transfers in a single bio
  - From: Leon Romanovsky
- Re: [RFC PATCH 2/7] block: don't merge different kinds of P2P transfers in a single bio
  - From: Zhu Yanjun

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