vdso_write_begin  319 arch/arm/kernel/vdso.c 	vdso_write_begin(vdso_data);
vdso_write_begin  211 arch/nds32/kernel/vdso.c 	vdso_write_begin(vdso_data);
vdso_write_begin   77 kernel/time/vsyscall.c 	vdso_write_begin(vdata);