[PATCH] vhost: mark symbols static in vhost.c

We get 4 warnings when building kernel with W=1:
drivers/vhost/vhost.c:52:23: warning: no previous prototype for 'vhost_umem_interval_tree_insert' [-Wmissing-prototypes]
drivers/vhost/vhost.c:52:23: warning: no previous prototype for 'vhost_umem_interval_tree_remove' [-Wmissing-prototypes]
drivers/vhost/vhost.c:52:23: warning: no previous prototype for 'vhost_umem_interval_tree_iter_first' [-Wmissing-prototypes]
drivers/vhost/vhost.c:52:23: warning: no previous prototype for 'vhost_umem_interval_tree_iter_next' [-Wmissing-prototypes]

In fact, these functions are defined in the
macro 'INTERVAL_TREE_DEFINE' in include/linux/interval_tree_generic.h
and don't need a declaration, but can be made static.

so this patch marks these functions with 'static' by modifying
the macro.

Signed-off-by: Baoyou Xie <redacted>
---
 drivers/vhost/vhost.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index c6f2d89..99c6d0d 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c

@@ -48,8 +48,8 @@ enum {
 #define vhost_avail_event(vq) ((__virtio16 __user *)&vq->used->ring[vq->num])
 
 INTERVAL_TREE_DEFINE(struct vhost_umem_node,
-		     rb, __u64, __subtree_last,
-		     START, LAST, , vhost_umem_interval_tree);
+		     rb, __u64, __subtree_last, START, LAST,
+		     static, vhost_umem_interval_tree);
 
 #ifdef CONFIG_VHOST_CROSS_ENDIAN_LEGACY
 static void vhost_disable_cross_endian(struct vhost_virtqueue *vq)

-- 
2.7.4