Re: [RFC][PATCH] introduce ptr_diff()

[Bernd Petrovitsch]

On Don, 2010-08-19 at 14:59 +0200, Andi Kleen wrote:
> > If so, the warning seems valid as sizeof(struct page) is probably not
> > (always) a power of 2. On a native build on x86_64 it is 56 bytes
> > hereover.
> > Hmm ....
> 
> gcc just generats a mull with inverted value. mull is cheap on any
> reasonable CPU.  Please fix sparse.

Not that I really know the code of sparse but what would be an
acceptable condition (except plain simply disabling/removing the warning
as such)?
No warning if it's a constant value (read: explicit or sizeof())?

	Bernd
-- 
Bernd Petrovitsch                  Email : bernd@xxxxxxxxxxxxxxxxxxx
                     LUGA : http://www.luga.at

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