Re: sg_next() for struct scatterlist is confusing

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Sat, 27 Oct 2007 07:39:40 -0400 (EDT)
"Robert P. J. Day" <[email protected]> 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.

Håvard
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]
  Powered by Linux