Subject: Re: [PATCH][RFC 23/23]: Support for zero-copy TCP transmit of user space data

From: Jeremy Fitzhardinge <[email-masked]>
Date: Fri, 19 Dec 2008 23:43:34 -0800

Herbert Xu wrote:
>> If so, how can it be solved?
>>     
>
> Well since each individual page can be pulled out I think you
> just have to track them.
>   

Hm.  So if I get a destructor call from the shared_info, can I go an 
inspect the page refcounts to see if its really the last use?

    J