From mboxrd@z Thu Jan  1 00:00:00 1970
From: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
Subject: Re: remove block layer bounce buffering for MMC v2
Date: Fri, 8 Mar 2019 10:18:53 +0100
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To: Ulf Hansson <ulf.hansson-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
Cc: Aaro Koskinen <aaro.koskinen-X3B1VOXEql0@public.gmane.org>, Nicolas Pitre <nico-vtqb6HGKxmzR7s880joybQ@public.gmane.org>, "linux-mmc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" <linux-mmc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, Russell King <linux-I+IVW8TIWO2tmTQ+vhA3Yw@public.gmane.org>, Linux Kernel Mailing List <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, "list-Y9sIeH5OGRo@public.gmane.org:IOMMU DRIVERS <iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org>,
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On Mon, Feb 25, 2019 at 02:54:13PM +0100, Ulf Hansson wrote:
> 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.

Please don't rush to merge this.  Based on a talk to some folks I
have an idea for a sg iterator that can hide the kmapping from
the drivers, which should allow for some less scary driver code and
clean this up a bit further.