[XFS] Fix up warnings

SGI Modid: xfs-linux:xfs-kern:191411a
Signed-off-by: Eric Sandeen <sandeen@sgi.com>
Signed-off-by: Christoph Hellwig <hch@sgi.com>

fs/xfs/linux-2.6/xfs_vnode.c

@@ -424,13 +424,13 @@ vn_remove(
  * Vnode tracing code.
  */
 void
-vn_trace_entry(vnode_t *vp, char *func, inst_t *ra)
+vn_trace_entry(vnode_t *vp, const char *func, inst_t *ra)
 {
 	KTRACE_ENTER(vp, VNODE_KTRACE_ENTRY, func, 0, ra);
 }
 
 void
-vn_trace_exit(vnode_t *vp, char *func, inst_t *ra)
+vn_trace_exit(vnode_t *vp, const char *func, inst_t *ra)
 {
 	KTRACE_ENTER(vp, VNODE_KTRACE_EXIT, func, 0, ra);
 }

fs/xfs/linux-2.6/xfs_vnode.h

@@ -648,8 +648,8 @@ static inline int VN_BAD(struct vnode *vp)
 #define	VNODE_KTRACE_REF	4
 #define	VNODE_KTRACE_RELE	5
 
-extern void vn_trace_entry(struct vnode *, char *, inst_t *);
-extern void vn_trace_exit(struct vnode *, char *, inst_t *);
+extern void vn_trace_entry(struct vnode *, const char *, inst_t *);
+extern void vn_trace_exit(struct vnode *, const char *, inst_t *);
 extern void vn_trace_hold(struct vnode *, char *, int, inst_t *);
 extern void vn_trace_ref(struct vnode *, char *, int, inst_t *);
 extern void vn_trace_rele(struct vnode *, char *, int, inst_t *);