Re: [PATCH] ioremap: fix iounmap numpages

[Jeremy Fitzhardinge]

Dave Young wrote:
> Hi,
> The second parameter of change_page_attr in iounmap is wrong, it should be (p->size - 1) >> PAGE_SHIFT
>   

Why's that?  Isn't p->size always going to be a pagesize multiple; in 
which case, why would you want to change_page_attr on n-1 pages?

Are you seeing a problem that this patch fixes?

   J
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