Messages in this thread |  | | | Date | Fri, 20 Aug 2010 13:12:39 +0100 | | From | Al Viro <> | | Subject | Re: [RFC][PATCH] introduce ptr_diff() |
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On Thu, Aug 19, 2010 at 02:59:57PM +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.
Depends on gcc version.
> Please fix sparse.
Frankly, I'd rather stop crapping -Wall into its arguments; there's a reason why that check is optional and it's *not* defaulting to on in sparse.
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