[Devel] Re: [ckrm-tech] [PATCH 6/7] BC: kernel memory (core)

Kirill Korotaev dev at sw.ru
Mon Sep 4 05:23:11 PDT 2006


Dave Hansen wrote:
> On Tue, 2006-08-29 at 18:58 +0400, Kirill Korotaev wrote:
> 
>>@@ -274,8 +274,14 @@ struct page {
>>        unsigned int gfp_mask;
>>        unsigned long trace[8];
>> #endif
>>+#ifdef CONFIG_BEANCOUNTERS
>>+       union {
>>+               struct beancounter      *page_bc;
>>+       } bc;
>>+#endif
>> }; 
> 
> 
> I know you're probably saving this union for when you put some userspace
> stuff in here or something.  But, for now, it would probably be best
> just to leave it as a plain struct, or even an anonymous union.
> 
> You probably had to use gcc 2 when this was written and couldn't use
> anonymous unions, right?
are you suggesting the code like this:
>>+#ifdef CONFIG_BEANCOUNTERS
>>+       union {
>>+               struct beancounter      *page_bc;
>>+       };
>>+#endif
>> }; 

#define page_bc(page)	((page)->page_bc)
?

> -- Dave
> 
> 
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