Hi Willem,

[auto build test WARNING on net-next/master]

url:    https://github.com/0day-ci/linux/commits/Willem-de-Bruijn/vhost_net-do-not-stall-on-zerocopy-depletion/20171001-054709
config: x86_64-randconfig-x002-201740 (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All warnings (new ones prefixed by >>):

   In file included from include/linux/list.h:8:0,
                    from include/linux/wait.h:6,
                    from include/linux/eventfd.h:12,
                    from drivers/vhost/net.c:10:
   drivers/vhost/net.c: In function 'vhost_exceeds_maxpend':
   include/linux/kernel.h:772:16: warning: comparison of distinct pointer types lacks a cast
     (void) (&min1 == &min2);   \
                   ^
   include/linux/kernel.h:775:2: note: in expansion of macro '__min'
     __min(typeof(x), typeof(y),   \
     ^~~~~

quoted

drivers/vhost/net.c:440:9: note: in expansion of macro 'min'

            min(VHOST_MAX_PEND, vq->num >> 2);
            ^~~

vim +/min +440 drivers/vhost/net.c

   433	
   434	static bool vhost_exceeds_maxpend(struct vhost_net *net)
   435	{
   436		struct vhost_net_virtqueue *nvq = &net->vqs[VHOST_NET_VQ_TX];
   437		struct vhost_virtqueue *vq = &nvq->vq;
   438	
   439		return (nvq->upend_idx + UIO_MAXIOV - nvq->done_idx) % UIO_MAXIOV >
 > 440		       min(VHOST_MAX_PEND, vq->num >> 2);
   441	}
   442	

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