On Tue, 26 Jul 2011 00:09:40 -0700 Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:
> Just a simple
>
> #define DIV_ROUND_UP_ULL(ll,d) \
> ({ unsigned long long _tmp = (ll)+(d)-1; do_div(_tmp, d); _tmp; })
>
> looks like it would work and be simpler. Avoid the conditional, do the
> same "add 'd-1' thing as the regular ROUND_UP().
>
We might end up needing a DIV_ROUND_UP_SECTOR_T because that guy's
type/size is Kconfigurable.
otoh DIV_ROUND_UP_ULL won't have many callsites - the occasional
conversion from UL to ULL then back to UL wouldn't kill us. Unless
there be subtle problems with such a conversion.
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