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Re: block device direct I/O fast path

From Christoph Hellwig <hch@lst.de>
Newsgroups linux.kernel
Subject Re: block device direct I/O fast path
Date 2016-11-01 18:10 +0100
Message-ID <syKJr-33k-21@gated-at.bofh.it> (permalink)
References <syp2i-5zh-35@gated-at.bofh.it> <syKJr-33k-7@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Tue, Nov 01, 2016 at 11:00:19AM -0600, Jens Axboe wrote:
> #2 is a bit more problematic, I'm pondering how we can implement that on
> top of the bio approach. The nice thing about the request based approach
> is that we have a 1:1 mapping with the unit on the driver side. And we
> have a place to store the timer. I don't particularly love the embedded
> timer, however, it'd be great to implement that differently. Trying to
> think of options there, haven't found any yet.

I have a couple ideas for that.  Give me a few weeks and I'll send
patches.

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Thread

block device direct I/O fast path Christoph Hellwig <hch@lst.de> - 2016-10-31 19:00 +0100
  [PATCH 2/2] block: fast-path for small and simple direct I/O requests Christoph Hellwig <hch@lst.de> - 2016-10-31 19:00 +0100
    Re: [PATCH 2/2] block: fast-path for small and simple direct I/O  requests Omar Sandoval <osandov@osandov.com> - 2016-11-01 00:30 +0100
      Re: [PATCH 2/2] block: fast-path for small and simple direct I/O         requests Christoph Hellwig <hch@lst.de> - 2016-11-01 15:20 +0100
  [PATCH 1/2] block: add bio_iov_iter_get_pages() Christoph Hellwig <hch@lst.de> - 2016-10-31 19:10 +0100
    Re: [PATCH 1/2] block: add bio_iov_iter_get_pages() Ming Lei <tom.leiming@gmail.com> - 2016-11-01 02:10 +0100
      Re: [PATCH 1/2] block: add bio_iov_iter_get_pages() Christoph Hellwig <hch@lst.de> - 2016-11-01 15:20 +0100
  Re: block device direct I/O fast path Jens Axboe <axboe@kernel.dk> - 2016-11-01 18:10 +0100
    Re: block device direct I/O fast path Christoph Hellwig <hch@lst.de> - 2016-11-01 18:10 +0100
      Re: block device direct I/O fast path Jens Axboe <axboe@kernel.dk> - 2016-11-01 19:00 +0100
        Re: block device direct I/O fast path Jens Axboe <axboe@kernel.dk> - 2016-11-01 19:30 +0100

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