On 9/6/05, sanjay kumar <tousanjay@xxxxxxxxxxx> wrote: > I am writing a kernel module in which i am allocating > pages using "alloc_pages(mask,order)" interface. > This interface return a pointer to the first page's > page structure. > > Now to access the page data, i have to get the virtual > address of the page using "kmap" (page can be in high > mem zone). The page pointer returned by the alloc_pages will already be mapped on to the lower memory (ZONE_NORMAL) > > My query is if i pass an order>0 to alloc_pages, do i > need to "kmap" all the pages individually or mapping > only the first page will map other pages also. > AFAIK, No need to map the pages, they are already mapped if in highmemory ..... -- Fawad Lateef -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
