Re: io_submit() blocks for writes for substantial amount of time

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On Tue, Sep 19, 2017 at 07:31:04PM +0300, Avi Kivity wrote:
> For DIO, does it really need the mm_struct? It can just pin the pages and
> pass them to the workqueue function.

We can't pin all the pages for a huge I/O at the same time.
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