RE: [PATCH] ia64: race flushing icache in COW path

[Luck, Tony]

@@ -1980,6 +1980,7 @@ static int do_swap_page(struct mm_struct
 	}
 
 	flush_icache_page(vma, page);
+	lazy_mmu_prot_update(pte);
 	set_pte_at(mm, address, page_table, pte);
 	page_add_anon_rmap(page, vma, address);
 

At first sight, this looks redundant ... but then I saw that
on ia64 "flush_icache_page()" is actually a no-op.  Perhaps
we can enter this in the next obfuscated C competition.

-Tony
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