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/usr/arm-linux-gnueabi/include/asm/mman.h is in linux-libc-dev-armel-cross 3.2.0-23.36cross1.82.

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#include <asm-generic/mman.h>

#define arch_mmap_check(addr, len, flags) \
	(((flags) & MAP_FIXED && (addr) < FIRST_USER_ADDRESS) ? -EINVAL : 0)