Extern or forward variable declaration at include/linux/root_dev.h, line 23 References: arch/ia64/kernel/setup.c, line 633 arch/mips/kernel/setup.c, line 175 arch/powerpc/kernel/setup-common.c, line 375 arch/powerpc/platforms/powermac/setup.c, line 316 arch/powerpc/platforms/powermac/setup.c, line 319 arch/powerpc/platforms/powermac/setup.c, line 360 arch/powerpc/platforms/powermac/setup.c, line 366 arch/s390/kernel/setup.c, line 988 arch/x86/kernel/setup.c, line 801 fs/cifs/cifsroot.c, line 47 init/do_mounts.c, line 36 init/do_mounts.c, line 382 init/do_mounts.c, line 387 init/do_mounts.c, line 387 init/do_mounts.c, line 404 init/do_mounts.c, line 404 init/do_mounts.c, line 570 init/do_mounts.c, line 577 init/do_mounts.c, line 583 init/do_mounts.c, line 589 init/do_mounts.c, line 627 init/do_mounts.c, line 636 init/do_mounts.c, line 640 net/ipv4/ipconfig.c, line 1511 net/ipv4/ipconfig.c, line 1511 net/ipv4/ipconfig.c, line 1533 net/ipv4/ipconfig.c, line 1539