Re: [Xen-devel] A bug in Xenbus driver

[Jeremy Fitzhardinge <jeremy@xxxxxxxx>]

 On 08/25/2010 12:11 PM, Jeremy Fitzhardinge wrote:
> copy_to_user returns the number of uncopied bytes, so if ret != sz, then
> some part of the data was not copied due to a memory fault problem.

No, wait, I've contradicted myself.  copy_to_user does return the number
of uncopied bytes, so the result should be 0 on success, and you're
right, the test should be "ret != 0".

Sorry about that.

    J

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