----- Original Message -----
 Hello Dave,
 
 I found the option -r fails when it comes to blkio subsystem
 on kernel after 3.5. This patch can fix the bug.
 
 Thanks,
 Zhang Xiaohe 
Thanks, the patch has been applied.
BTW, you might want to clean up this warning the next time you update it:
 $ make extensions
 ...
 gcc -Wall -nostartfiles -shared -rdynamic -o cgget.so cgget.c -fPIC -DX86_64 
-DGDB_7_3_1
 cgget.c: In function 'read_policy_node':
 cgget.c:2293:11: warning: variable 'dev' set but not used
[-Wunused-but-set-variable]
 $
Dave