MS_INVALIDATE      24 include/asm-generic/mman.h #define MS_INVALIDATE	2		/* invalidate the caches */
MS_INVALIDATE      28 include/asm-parisc/mman.h #define MS_INVALIDATE	4		/* invalidate the caches */
MS_INVALIDATE      61 include/asm-xtensa/mman.h #define MS_INVALIDATE	0x0002		/* invalidate mappings & caches */