Messages in this thread | | | From | David Mosberger <> | Date | Fri, 26 Mar 2004 12:25:03 -0800 | Subject | Re: Fw: potential /dev/urandom scalability improvement |
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>>>>> On Fri, 26 Mar 2004 10:49:04 -0800, Andrew Morton <akpm@osdl.org> said:
Andrew> But the start address which is fed into prefetch_range() may Andrew> not be cacheline-aligned. So if appropriately abused, a Andrew> prefetch_range() could wander off the end of the user's Andrew> buffer and into a new page.
Andrew> I think this gets it right, but I probably screwed something Andrew> up.
Please, let's not make this more complicated than it is. The cacheline alignment doesn't matter at all. Provided prefetch_range() is given a range of guaranteed to be valid memory, then it will be fine. It never touches anything outside the specified range.
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