[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/xfs_filestream.c b/fs/xfs/xfs_filestream.c
index eb03eab..3f3785b 100644
--- a/fs/xfs/xfs_filestream.c
+++ b/fs/xfs/xfs_filestream.c
@@ -73,7 +73,7 @@
 #define TRACE4(mp,t,a0,a1,a2,a3)	TRACE6(mp,t,a0,a1,a2,a3,0,0)
 #define TRACE5(mp,t,a0,a1,a2,a3,a4)	TRACE6(mp,t,a0,a1,a2,a3,a4,0)
 #define TRACE6(mp,t,a0,a1,a2,a3,a4,a5) \
-	xfs_filestreams_trace(mp, t, __FUNCTION__, __LINE__, \
+	xfs_filestreams_trace(mp, t, __func__, __LINE__, \
 				(__psunsigned_t)a0, (__psunsigned_t)a1, \
 				(__psunsigned_t)a2, (__psunsigned_t)a3, \
 				(__psunsigned_t)a4, (__psunsigned_t)a5)