Update rte_mempool_xmem_size() so that when the page_shift argument is set to 0, assume that memory is physically contiguous, allowing to ignore page boundaries. This will be used in the next commits. By the way, rename the variable 'n' as 'obj_per_page' and avoid the affectation inside the if(). Signed-off-by: Olivier Matz <olivier.matz@6wind.com>