Re: [PATCH v8 00/10] iov_iter: Improve page extraction (pin or just list)

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On 1/23/23 09:29, David Howells wrote:
Hi Al, Christoph,

Here are patches to provide support for extracting pages from an iov_iter
and to use this in the extraction functions in the block layer bio code.


Hi David,

It's great to see this series. I attempted this a few times but got
caught in a loop of "don't quite see all the pieces, but it almost makes
sense...Al Viro has spotted major problems (again)...squirrel!"; and
repeat. :)

I saw your earlier versions go by and expected that they would end up
being an iov_iter prerequisite to getting Direct IO converted over to
FOLL_PIN. But now it looks like you are actually doing the conversion as
well! That's really excellent.

I've made a first pass through the series and have some minor notes
that I'll send out shortly, but it looks nice overall.

thanks,
--
John Hubbard
NVIDIA




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