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To: Oliver Xymoron <oxymoron@waste.org>
Cc: Daniel Phillips <phillips@bonn-fries.net>,
        Linus Torvalds <torvalds@transmeta.com>,
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Subject: Re: [reiserfs-list] Re: Note describing poor dcache utilization under high memory pressure 
In-Reply-To: Your message of "Mon, 28 Jan 2002 19:29:49 CST."
             <Pine.LNX.4.44.0201281918050.18405-100000@waste.org> 
From: Valdis.Kletnieks@vt.edu
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On Mon, 28 Jan 2002 19:29:49 CST, Oliver Xymoron said:

> I think something more is needed, such as creating a minimal page table
> for the child process with read-only mappings to the current %EIP and %EBP
> pages in it. This gets us past the fork/exec hurdle. Without the exec, we
> copy over chunks when they're accessed as above in handle_mm_fault. But
> you can't actually _share_ the page tables without marking the pages
> themselves readonly.

Actually, you can.  But everybody agrees that vfork() was blecherous.
-- 
				Valdis Kletnieks
				Computer Systems Senior Engineer
				Virginia Tech


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