arch/parisc/include/uapi/asm/ipcbuf.h
arch/powerpc/include/uapi/asm/ipcbuf.h
arch/s390/include/uapi/asm/ipcbuf.h
arch/sparc/include/uapi/asm/ipcbuf.h
arch/xtensa/include/uapi/asm/ipcbuf.h
include/uapi/asm-generic/ipcbuf.h