linux-kernel - Re: [PATCH 01/18] PCI/P2PDMA: refactor the p2pdma mapping helpers

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Message-ID: <20241029164843.GO1615717@unreal>
Date: Tue, 29 Oct 2024 18:48:43 +0200
From: Leon Romanovsky <leon@...nel.org>
To: Bjorn Helgaas <helgaas@...nel.org>
Cc: Jens Axboe <axboe@...nel.dk>, Jason Gunthorpe <jgg@...pe.ca>,
	Robin Murphy <robin.murphy@....com>, Joerg Roedel <joro@...tes.org>,
	Will Deacon <will@...nel.org>, Christoph Hellwig <hch@....de>,
	Sagi Grimberg <sagi@...mberg.me>, Keith Busch <kbusch@...nel.org>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Logan Gunthorpe <logang@...tatee.com>,
	Yishai Hadas <yishaih@...dia.com>,
	Shameer Kolothum <shameerali.kolothum.thodi@...wei.com>,
	Kevin Tian <kevin.tian@...el.com>,
	Alex Williamson <alex.williamson@...hat.com>,
	Marek Szyprowski <m.szyprowski@...sung.com>,
	Jérôme Glisse <jglisse@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jonathan Corbet <corbet@....net>, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-block@...r.kernel.org,
	linux-rdma@...r.kernel.org, iommu@...ts.linux.dev,
	linux-nvme@...ts.infradead.org, linux-pci@...r.kernel.org,
	kvm@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH 01/18] PCI/P2PDMA: refactor the p2pdma mapping helpers

On Mon, Oct 28, 2024 at 03:59:02PM -0500, Bjorn Helgaas wrote:
> Prefer subject capitalization in drivers/pci:
> 
>   PCI/P2PDMA: Refactor ...
> 
> On Sun, Oct 27, 2024 at 04:21:01PM +0200, Leon Romanovsky wrote:
> > From: Christoph Hellwig <hch@....de>
> > 
> > The current scheme with a single helper to determine the P2P status
> > and map a scatterlist segment force users to always use the map_sg
> > helper to DMA map, which we're trying to get away from because they
> > are very cache inefficient.
> > ...
> 
> Acked-by: Bjorn Helgaas <bhelgaas@...gle.com>
> 
> A couple minor nits below.

I'll fix, thanks