Re: [PATCH] Add support for usbfs zerocopy.

From: Peter Stuge
Date: Wed Jan 06 2016 - 10:29:01 EST


Steinar H. Gunderson wrote:
> > Our interface for zero copy reads/writes is O_DIRECT, and that requires
> > not special memory allocation, just proper alignment.
>
> But that assumes you are using I/O using read()/write(). There's no way you
> can shoehorn USB isochronous reads into the read() interface, O_DIRECT or not.

How about aio?


//Peter
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