VT_BUF_HAVE_RW     23 include/linux/vt_buffer.h #ifndef VT_BUF_HAVE_RW
VT_BUF_HAVE_RW     31 include/linux/vt_buffer.h #ifdef VT_BUF_HAVE_RW
VT_BUF_HAVE_RW     44 include/linux/vt_buffer.h #ifdef VT_BUF_HAVE_RW
VT_BUF_HAVE_RW     57 include/linux/vt_buffer.h #ifdef VT_BUF_HAVE_RW