Messages in this thread | | | Date | Fri, 15 Sep 2006 14:30:24 +0100 (BST) | From | Hugh Dickins <> | Subject | Re: [RFC] page fault retry with NOPAGE_RETRY |
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On Fri, 15 Sep 2006, Andrew Morton wrote: > > This assumes that no other heavyweight process will try to modify this > single-threaded process's mm. I don't _think_ that happens anywhere, does > it? access_process_vm() is the only case I can think of,
"Modify" in the sense of fault into. Yes, access_process_vm() is all I can think of too.
> and it does down_read(other process's mmap_sem).
If there were anything else, it'd have to do so too (if not down_write).
I too like NOPAGE_RETRY: as you've both observed, it can help to solve several different problems.
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