AC_CHECK_LINUX_STRUCT([ctl_table], [ctl_name], [sysctl.h])
AC_CHECK_LINUX_STRUCT([dentry], [d_u.d_alias], [dcache.h])
AC_CHECK_LINUX_STRUCT([dentry_operations], [d_automount], [dcache.h])
+ AC_CHECK_LINUX_STRUCT([group_info], [gid], [cred.h])
AC_CHECK_LINUX_STRUCT([inode], [i_alloc_sem], [fs.h])
AC_CHECK_LINUX_STRUCT([inode], [i_blkbits], [fs.h])
AC_CHECK_LINUX_STRUCT([inode], [i_blksize], [fs.h])