Re: sg_next() for struct scatterlist is confusing

[Haavard Skinnemoen]

On Sat, 27 Oct 2007 07:39:40 -0400 (EDT)
"Robert P. J. Day" <rpjday@xxxxxxxxxxxxxx> wrote:

>   note how the comment says that the next entry will "usually" be
> sg+1, "but" not if it's actually a pointer.
> 
>   however, as i read the code above, sg is *always* incremented before
> that testing.  is that correct?  am i just misreading something?  or
> could the comment have been a bit clearer?

If it increments sg and finds a "chain" entry, it will follow it to the
next sg array instead of just returning it. Which makes sense because
the chain entry itself isn't a valid entry in the sg list.

HÃvard
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