MADV_DONTNEED      31 include/asm-generic/mman.h #define MADV_DONTNEED	4		/* don't need these pages */
MADV_DONTNEED      37 include/asm-parisc/mman.h #define MADV_DONTNEED   4               /* don't need these pages */
MADV_DONTNEED      74 include/asm-xtensa/mman.h #define MADV_DONTNEED	4		/* don't need these pages */