Messages in this thread |  | | From | Benjamin Herrenschmidt <> | Subject | Re: please revert bogus patch to vmscan.c | Date | Tue, 30 Oct 2001 18:36:23 +0100 |
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>Since we can't (AFAIK) have linux use larger PTEs (in which case we >could store a pointer to the hash PTE in the linux PTE), We could >instead layout an array of pointer (one for each page) that would >hold these. > >That way, we have a fast way to grab the real accessed and dirty >bits, which means we no longer need to flush hash pages when getting >those bits and have a more realistic PAGE_ACCESSED (currently, any page >in the hash has PAGE_ACCESSED).
Obviously, an array of pointer would be horrible bloat, maybe the layout of a parallel page table (ARM does this I think) would make more sense.
I don't know if it would be really an improvement however.
ben.
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