[linux-lvm] super.c failing in kernel compile

[Bradley M Alexander]

Hi,

I have successfully rebuilt my system after the issues a couple of weeks
ago, and am trying to recompile the kernel with LVM support.

I am using Debian's kernel source 2.4.19 with lvm-1.0.6. The compile stops
with 

gcc -D__KERNEL__ -I/usr/src/kernel-source-2.4.19/include -Wall
-Wstrict-prototypes -Wno-trigraphs -O2 -fno-strict-aliasing -fno-common
-fomit-frame-pointer -pipe -mpreferred-stack-boundary=2 -march=i686
-malign-functions=4    -nostdinc -I
/usr/lib/gcc-lib/i386-linux/2.95.4/include -DKBUILD_BASENAME=super  -c -o
super.o super.c
super.c: In function `unlockfs':
super.c:520: `mount_sem' undeclared (first use in this function)
super.c:520: (Each undeclared identifier is reported only once
super.c:520: for each function it appears in.)
make[3]: *** [super.o] Error 1

Am I missing a package I needed? How do I fix this so I can get the kernel
compiled and get on with restoring from backups?

Thanks,
--Brad