Messages in this thread |  | | Subject | Re: broken VM in 2.4.10-pre9 | Date | Thu, 20 Sep 2001 13:57:02 +0100 (BST) | From | Alan Cox <> |
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> On September 20, 2001 12:04 am, Alan Cox wrote: > > Reverse mappings make linear aging easier to do but are not critical (we > > can walk all physical pages via the page map array). > > But you can't pick up the referenced bit that way, so no up aging, only > down.
#1 If you really wanted to you could update a referenced bit in the page struct in the fault handling path.
#2 If a page is referenced multiple times by different processes is the behaviour of multiple upward aging actually wrong.
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