| Reference |  |


====== Address Conversion ======
===== page to Virtual address =====
<file>
struct page *page;
unsigned char *p;
p = page_address(page);
</file>

Other APIs:

  * kmap_atomic
  * __kunmap_atomic
====== Linux Page Allocation ======

Allocate pages
<file>
   struct page *page;
   page = alloc_pages(gfp, order);
   
</file>   


Allocate one page
<file>
   struct page *page, *head;
   char *data="aljalf";
     
   /*allocate a page */
   page = alloc_page(gfp_mask);
   if (page) 
      memcpy(page_address(page),  data, strlen(data)+1 );
	
   /*free a page*/
   put_page(page );
   
</file>