[XFS] replace remaining __FUNCTION__ occurrences

__FUNCTION__ is gcc-specific, use __func__

SGI-PV: 976035
SGI-Modid: xfs-linux-melb:xfs-kern:30775a

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
diff --git a/fs/xfs/linux-2.6/xfs_vnode.h b/fs/xfs/linux-2.6/xfs_vnode.h
index 4ed5914..dbb8a5d 100644
--- a/fs/xfs/linux-2.6/xfs_vnode.h
+++ b/fs/xfs/linux-2.6/xfs_vnode.h
@@ -288,9 +288,9 @@
 extern void _xfs_itrace_ref(struct xfs_inode *, char *, int, inst_t *);
 extern void xfs_itrace_rele(struct xfs_inode *, char *, int, inst_t *);
 #define xfs_itrace_entry(ip)	\
-	_xfs_itrace_entry(ip, __FUNCTION__, (inst_t *)__return_address)
+	_xfs_itrace_entry(ip, __func__, (inst_t *)__return_address)
 #define xfs_itrace_exit(ip)	\
-	_xfs_itrace_exit(ip, __FUNCTION__, (inst_t *)__return_address)
+	_xfs_itrace_exit(ip, __func__, (inst_t *)__return_address)
 #define xfs_itrace_exit_tag(ip, tag)	\
 	_xfs_itrace_exit(ip, tag, (inst_t *)__return_address)
 #define xfs_itrace_ref(ip)	\