Messages in this thread | | | Date | Tue, 30 Jun 2009 16:13:51 -0700 | From | Yinghai Lu <> | Subject | Re: [BUG 2.6.31-rc1] HIGHMEM64G causes hang in PCI init on 32-bit x86 |
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Linus Torvalds wrote: > > On Tue, 30 Jun 2009, Linus Torvalds wrote: >> I don't see any single-use trick then, and so it needs the whole statement >> expression mess. > > Hmm. Does (((x)-1) | mask)+1) work? > > I haven't thought it fully through, but that _should_ take care of the > "already aligned" case, no?
yes. that is right.
then how about roundup(x,y) round_up(x,y)
roundup doesn't need y is 2^n but round_up does need y is 2^n, and only for x86
the name is confusing.
YH
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