__NR_readahead    227 arch/x86/include/generated/uapi/asm/unistd_32.h #define __NR_readahead 225
__NR_readahead    191 arch/x86/include/generated/uapi/asm/unistd_64.h #define __NR_readahead 187
__NR_readahead    169 arch/x86/include/generated/uapi/asm/unistd_x32.h #define __NR_readahead (__X32_SYSCALL_BIT + 187)