linux-kernel - Re: [PATCH v8 20/24] blk-mq: add scatterlist-less DMA mapping helpers

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Message-ID: <20250420070946.GA10635@unreal>
Date: Sun, 20 Apr 2025 10:09:46 +0300
From: Leon Romanovsky <leon@...nel.org>
To: ALOK TIWARI <alok.a.tiwari@...cle.com>
Cc: Marek Szyprowski <m.szyprowski@...sung.com>,
	Jens Axboe <axboe@...nel.dk>, Christoph Hellwig <hch@....de>,
	Keith Busch <kbusch@...nel.org>, Jake Edge <jake@....net>,
	Jonathan Corbet <corbet@....net>, Jason Gunthorpe <jgg@...pe.ca>,
	Zhu Yanjun <zyjzyj2000@...il.com>,
	Robin Murphy <robin.murphy@....com>, Joerg Roedel <joro@...tes.org>,
	Will Deacon <will@...nel.org>, Sagi Grimberg <sagi@...mberg.me>,
	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>,
	Jérôme Glisse <jglisse@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	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,
	Niklas Schnelle <schnelle@...ux.ibm.com>,
	Chuck Lever <chuck.lever@...cle.com>,
	Luis Chamberlain <mcgrof@...nel.org>,
	Matthew Wilcox <willy@...radead.org>,
	Dan Williams <dan.j.williams@...el.com>,
	Kanchan Joshi <joshi.k@...sung.com>,
	Chaitanya Kulkarni <kch@...dia.com>
Subject: Re: [PATCH v8 20/24] blk-mq: add scatterlist-less DMA mapping helpers

On Fri, Apr 18, 2025 at 11:33:09PM +0530, ALOK TIWARI wrote:
> 
> 
> > + * Start DMA mapping @req to @dma_dev.  @state and @iter are provided by the
> > + * caller and don't need to be initialized.  @state needs to be stored for use
> > + * at unmap time, @iter is only needed at map time.
> > + *
> > + * Returns %false if there is no segment to map, including due to an error, or
> > + * %true it it did map a segment.
> 
> typo - it it -> if it

Thanks, will fix all types on my dma-split-wip branch.