Messages in this thread | | | Date | Mon, 10 Sep 2007 01:03:18 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH] PTR_ALIGN |
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On Thu, 23 Aug 2007 05:47:03 -0600 Matthew Wilcox <matthew@wil.cx> wrote:
> > The AdvanSys driver wants to align some pointers, and the ALIGN macro > doesn't work for pointers. Rather than try to make it work, add a new > PTR_ALIGN macro which is typesafe. > > Signed-off-by: Matthew Wilcox <matthew@wil.cx> > > diff --git a/include/linux/kernel.h b/include/linux/kernel.h > index f592df7..47160fe 100644 > --- a/include/linux/kernel.h > +++ b/include/linux/kernel.h > @@ -34,6 +34,7 @@ extern const char linux_proc_banner[]; > > #define ALIGN(x,a) __ALIGN_MASK(x,(typeof(x))(a)-1) > #define __ALIGN_MASK(x,mask) (((x)+(mask))&~(mask)) > +#define PTR_ALIGN(p, a) ((typeof(p))ALIGN((unsigned long)(p), (a))) > > #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr)) >
I'll plan on getting this thing of beauty into mainline in the next week or so, so you can get those advansys changes into James's tree.
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