tag	line	file	source code
PTRS_PER_PMD	29	include/asm-alpha/pgtable.h	#define PTRS_PER_PMD  (1UL << (PAGE_SHIFT-3))
PTRS_PER_PMD	29	include/asm-i386/pgtable.h	#define PTRS_PER_PMD  1
PTRS_PER_PMD	27	include/asm-sparc/pgtable.h	#define PTRS_PER_PMD    1