Messages in this thread | | | Date | Sat, 19 Dec 1998 17:10:05 GMT | From | "Stephen C. Tweedie" <> | Subject | Re: PG_clean for shared mapping smart syncing |
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Hi,
On Sat, 19 Dec 1998 17:37:03 +0100 (CET), Andrea Arcangeli <andrea@e-mind.com> said:
> Ah but I just found a problem... When we set the PG_clean flag on the page > we should set the pte readonly for that page in all process vm and not > only in the process running. But if we must play with the page table it's > easier to directly set the page as clean as I was used to do with my > previous update_shared_mappings() patch. So I think we could drop > completly my last patch and return to my old code and solve the problem to > handle the mmap_sem locking right...
Agreed, I much prefer the concept of being able to reliably keep the pte dirty bits consistent between processes.
--Stephen
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