Hi, it is a one (1) represented as an unsigned long.
On Mon, Apr 21, 2008 at 5:55 PM, Nikhil Talpallikar < [EMAIL PROTECTED]> wrote: > Hi, > > What is "1UL" in PAGE_SIZE macro? > > /* PAGE_SHIFT determines the page size */ > #define PAGE_SHIFT 12 > #define PAGE_SIZE (1UL << PAGE_SHIFT) > #define PAGE_MASK (~(PAGE_SIZE-1)) > > cheers, > Nikhil >
