__copy_tofrom_user fails on unaligned read faults

[Dale Farnsworth]

On Thu, Nov 21, 2002 at 05:07:32PM -0500, Dan Malek wrote:
> Dale Farnsworth wrote:
>
> >For performance reasons, __copy_tofrom_user copies
> >data in 16-bytes chunks.  If a read fault occurs in the
> >middle of one of these chunks,
>
> How do you get a read fault in the middle of a 16-byte
> aligned data copy?

The 16-byte copy is aligned on the destination address.
It is unaligned with respect to the source address.

-Dale

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