switch rqst_exp_get_by_name()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/include/linux/nfsd/export.h b/include/linux/nfsd/export.h
index bcd0201..98f6fd5 100644
--- a/include/linux/nfsd/export.h
+++ b/include/linux/nfsd/export.h
@@ -125,8 +125,7 @@
 void			exp_readlock(void);
 void			exp_readunlock(void);
 struct svc_export *	rqst_exp_get_by_name(struct svc_rqst *,
-					     struct vfsmount *,
-					     struct dentry *);
+					     struct path *);
 struct svc_export *	rqst_exp_parent(struct svc_rqst *,
 					struct vfsmount *mnt,
 					struct dentry *dentry);