compile error of zfs in vdev_disk.c

[imraven]

Hello and thank you for taking the time to read this.

Distribution: Ubuntu 11.04 AMD64
Kernel: Linux 2.6.38-11-generic #50-Ubuntu SMP Mon Sep 12 21:17:25 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux
SPL/ZFS version: latest git clone as of 2011-10-10

SPL compiles fine but the ZFS package does not. After ./configure I run 'make' to which the following error is produced:

make[2]: Entering directory `/root/src/zfs/module'
make -C /usr/src/linux-headers-2.6.38-11-generic SUBDIRS=`pwd`  modules
make[3]: Entering directory `/usr/src/linux-headers-2.6.38-11-generic'
  CC [M]  /root/src/zfs/module/zfs/../../module/zfs/vdev_disk.o
/root/src/zfs/module/zfs/../../module/zfs/vdev_disk.c: In function ‘vdev_disk_open’:
/root/src/zfs/module/zfs/../../module/zfs/vdev_disk.c:126:2: error: implicit declaration of function ‘open_bdev_excl’
/root/src/zfs/module/zfs/../../module/zfs/vdev_disk.c:126:7: warning: assignment makes pointer from integer without a cast
/root/src/zfs/module/zfs/../../module/zfs/vdev_disk.c: In function ‘vdev_disk_close’:
/root/src/zfs/module/zfs/../../module/zfs/vdev_disk.c:161:3: error: implicit declaration of function ‘close_bdev_excl’
/root/src/zfs/module/zfs/../../module/zfs/vdev_disk.c: In function ‘vdev_disk_read_rootlabel’:
/root/src/zfs/module/zfs/../../module/zfs/vdev_disk.c:605:7: warning: assignment makes pointer from integer without a cast
make[5]: *** [/root/src/zfs/module/zfs/../../module/zfs/vdev_disk.o] Error 1
make[4]: *** [/root/src/zfs/module/zfs] Error 2
make[3]: *** [_module_/root/src/zfs/module] Error 2
make[3]: Leaving directory `/usr/src/linux-headers-2.6.38-11-generic'
make[2]: *** [modules] Error 2
make[2]: Leaving directory `/root/src/zfs/module'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/root/src/zfs'
make: *** [all] Error 2

Please let me know if there is any other information I can provide.

Thanks,

Brandon

PS: The reason I'm trying to use a git clone is because I'm having an issue running the rollback command. It keeps giving me 'dataset is busy' error. I read on another thread that updating to the latest git solves the problem.