From: Ulf Hansson <ulf.hansson@linaro.org>
To: Christoph Hellwig <hch@lst.de>
Cc: Aaro Koskinen <aaro.koskinen@iki.fi>,
Nicolas Pitre <nico@fluxnic.net>,
"linux-mmc@vger.kernel.org" <linux-mmc@vger.kernel.org>,
Russell King <linux@armlinux.org.uk>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
"list@263.net:IOMMU DRIVERS <iommu@lists.linux-foundation.org>,
Joerg Roedel <joro@8bytes.org>,
" <iommu@lists.linux-foundation.org>,
Ben Dooks <ben-linux@fluff.org>,
linux-omap <linux-omap@vger.kernel.org>,
Linux ARM <linux-arm-kernel@lists.infradead.org>
Subject: Re: remove block layer bounce buffering for MMC v2
Date: Mon, 25 Feb 2019 14:54:13 +0100 [thread overview]
Message-ID: <CAPDyKFr6gDYttazFJJzyFm04qiy=9oQAeW9a-cFxHE1vP+DhLA@mail.gmail.com> (raw)
In-Reply-To: <20190212072528.13167-1-hch@lst.de>
On Tue, 12 Feb 2019 at 08:25, Christoph Hellwig <hch@lst.de> wrote:
>
> Hi everyone,
>
> this series converts the remaining MMC host drivers to properly kmap the
> scatterlist entries it does PIO operations on, and then goes on to
> remove the usage of block layer bounce buffering (which I plan to remove
> eventually) from the MMC layer.
>
> As a bonus I've converted various drivers to the proper scatterlist
> helpers so that at least in theory they are ready for chained
> scatterlists.
>
> All the changes are compile tested only as I don't have any of the
> hardware, so a careful review would be appreciated.
>
> Changes since v1:
> - fix a missing kunmap_atomic in mvsdio
> - fix a stray whitespace in s3cmci
> - add new sg_kmap_atomic and sg_kunmap_atomic helpers
> - set the DMA and block layer dma boundary
> - use pointer arithmetics to reduce the amount of changes in
> various drivers
>
This looks good to me, however the lack of feedback/tests worries me a
bit. So, unless you think it's a bad idea, I intend to apply this when
v5.1 rc1 is out, which allows a lengthy test period in linux-next.
Make sense?
Kind regards
Uffe
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next prev parent reply other threads:[~2019-02-25 13:55 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-12 7:25 remove block layer bounce buffering for MMC v2 Christoph Hellwig
2019-02-12 7:25 ` [PATCH 01/14] scatterlist: add sg_kmap_atomic / sg_kunmap_atomic helpers Christoph Hellwig
2019-02-12 7:25 ` [PATCH 02/14] mmc: remove the unused use_blk_mq field from struct mmc_host Christoph Hellwig
2019-02-12 7:25 ` [PATCH 03/14] mmc: add a need_kmap flag to " Christoph Hellwig
2019-02-12 7:25 ` [PATCH 04/14] mmc: davinci: handle highmem pages Christoph Hellwig
2019-02-12 7:25 ` [PATCH 05/14] mmc: moxart: " Christoph Hellwig
2019-02-12 7:25 ` [PATCH 06/14] mmc: omap: " Christoph Hellwig
2019-02-12 18:39 ` Tony Lindgren
2019-02-12 7:25 ` [PATCH 07/14] mmc: omap: handle chained sglists Christoph Hellwig
2019-02-12 7:25 ` [PATCH 08/14] mmc: s3cmci: handle highmem pages Christoph Hellwig
2019-02-12 7:25 ` [PATCH 09/14] mmc: s3cmci: handle chained sglists Christoph Hellwig
2019-02-12 7:25 ` [PATCH 10/14] mmc: mvsdio: handle highmem pages Christoph Hellwig
2019-02-12 7:25 ` [PATCH 11/14] mmc: sh_mmcif: " Christoph Hellwig
2019-02-12 7:25 ` [PATCH 12/14] mmc: sh_mmcif: handle chained sglists Christoph Hellwig
2019-02-12 7:25 ` [PATCH 13/14] mmc: core: don't use block layer bounce buffers Christoph Hellwig
2019-02-12 7:25 ` [PATCH 14/14] dma-mapping: remove dma_max_pfn Christoph Hellwig
2019-02-25 13:54 ` Ulf Hansson [this message]
2019-03-08 9:18 ` remove block layer bounce buffering for MMC v2 Christoph Hellwig
2019-03-08 9:43 ` Ulf Hansson
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