Messages in this thread | | | Date | Mon, 29 Oct 2001 18:29:49 -0500 | From | Benjamin LaHaise <> | Subject | Re: please revert bogus patch to vmscan.c |
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On Mon, Oct 29, 2001 at 03:22:28PM -0800, Linus Torvalds wrote: > Does it make the accessed bit less reliable? Sure it does. But basically, > either the page is accessed SO much that it stays in the TLB all the time > (which is basically not really possible if you page heavily, I suspect), > or it will age out of the TLB on its own at which point we get the > accessed bit back.
Think of CPUs with tagged tlbs and lots of entries. Or even a system that only runs 1 threaded app. Easily triggerable. If people want to optimise it, great. But go for correctness first, please...
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