[nfs:ioctl 2/5] fs/nfs/ioctl.c:108: undefined reference to `__ucmpdi2'

[kbuild test robot <fengguang.wu@intel.com>]

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tree:   git://git.linux-nfs.org/projects/trondmy/linux-nfs.git ioctl
head:   d60bb8b2798b19dd5a38f80012ba9c3a5f5a4436
commit: 33296e02268c7186bf01bf80e3d5aa8669b10488 [2/5] NFS: Add an ioctl to flush and invalidate a limited range of data
config: blackfin-BF561-ACVILON_defconfig (attached as .config)
compiler: bfin-uclinux-gcc (GCC) 6.2.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 33296e02268c7186bf01bf80e3d5aa8669b10488
        # save the attached .config to linux build tree
        make.cross ARCH=blackfin 

All errors (new ones prefixed by >>):

   bfin-uclinux-ld: L1 text overflow!
   fs/nfs/ioctl.o: In function `nfs_ioctl_cachectl':
>> fs/nfs/ioctl.c:108: undefined reference to `__ucmpdi2'

vim +108 fs/nfs/ioctl.c

33296e02 Trond Myklebust 2012-11-14   99  
1f0b13a9 Trond Myklebust 2012-11-14  100  static long nfs_ioctl_cachectl(struct file *filp, struct nfs_cachectl __user *argp)
1f0b13a9 Trond Myklebust 2012-11-14  101  {
1f0b13a9 Trond Myklebust 2012-11-14  102  	u64 cmd;
1f0b13a9 Trond Myklebust 2012-11-14  103  
1f0b13a9 Trond Myklebust 2012-11-14  104  	if (!(filp->f_mode & (FMODE_READ|FMODE_WRITE)))
1f0b13a9 Trond Myklebust 2012-11-14  105  		return -EBADF;
1f0b13a9 Trond Myklebust 2012-11-14  106  	if (copy_from_user(&cmd, &argp->cmd, sizeof(cmd)))
1f0b13a9 Trond Myklebust 2012-11-14  107  		return -EFAULT;
1f0b13a9 Trond Myklebust 2012-11-14 @108  	switch (cmd) {
1f0b13a9 Trond Myklebust 2012-11-14  109  	case NFS_CACHECTL_REVALIDATE_ALL:
1f0b13a9 Trond Myklebust 2012-11-14  110  		return nfs_ioctl_cache_revalidate(filp, true, true);
1f0b13a9 Trond Myklebust 2012-11-14  111  	case NFS_CACHECTL_REVALIDATE_METADATA:
1f0b13a9 Trond Myklebust 2012-11-14  112  		return nfs_ioctl_cache_revalidate(filp, true, false);
1f0b13a9 Trond Myklebust 2012-11-14  113  	case NFS_CACHECTL_REVALIDATE_DATA:
1f0b13a9 Trond Myklebust 2012-11-14  114  		return nfs_ioctl_cache_revalidate(filp, false, true);
33296e02 Trond Myklebust 2012-11-14  115  	case NFS_CACHECTL_REVALIDATE_RANGE:
33296e02 Trond Myklebust 2012-11-14  116  		return nfs_ioctl_revalidate_range(filp, argp);
1f0b13a9 Trond Myklebust 2012-11-14  117  	}
1f0b13a9 Trond Myklebust 2012-11-14  118  	return -EINVAL;
1f0b13a9 Trond Myklebust 2012-11-14  119  }
1f0b13a9 Trond Myklebust 2012-11-14  120  

:::::: The code at line 108 was first introduced by commit
:::::: 1f0b13a9d1c9c50891777988ada7e0bfaf8ead6d NFS: Add an ioctl to allow applications limited control over caching

:::::: TO: Trond Myklebust <Trond.Myklebust@netapp.com>
:::::: CC: Trond Myklebust <trond.myklebust@primarydata.com>

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