[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_bmap.h b/fs/xfs/xfs_bmap.h
index 87224b7..6ff70cd 100644
--- a/fs/xfs/xfs_bmap.h
+++ b/fs/xfs/xfs_bmap.h
@@ -151,7 +151,7 @@
 	xfs_extnum_t		cnt,		/* count of entries in list */
 	int			whichfork);	/* data or attr fork */
 #define	XFS_BMAP_TRACE_EXLIST(ip,c,w)	\
-	xfs_bmap_trace_exlist(__FUNCTION__,ip,c,w)
+	xfs_bmap_trace_exlist(__func__,ip,c,w)
 #else
 #define	XFS_BMAP_TRACE_EXLIST(ip,c,w)
 #endif