[GFS2] Add an additional argument to gfs2_trans_add_bh()

This adds an extra argument to gfs2_trans_add_bh() to indicate whether the
bh being added to the transaction is metadata or data. Its currently unused
since all existing callers set it to 1 (metadata) but following patches will
make use of it.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
diff --git a/fs/gfs2/trans.c b/fs/gfs2/trans.c
index afa5408..82952fb 100644
--- a/fs/gfs2/trans.c
+++ b/fs/gfs2/trans.c
@@ -138,10 +138,11 @@
  * gfs2_trans_add_bh - Add a to-be-modified buffer to the current transaction
  * @gl: the glock the buffer belongs to
  * @bh: The buffer to add
+ * @meta: True in the case of adding metadata
  *
  */
 
-void gfs2_trans_add_bh(struct gfs2_glock *gl, struct buffer_head *bh)
+void gfs2_trans_add_bh(struct gfs2_glock *gl, struct buffer_head *bh, int meta)
 {
 	struct gfs2_sbd *sdp = gl->gl_sbd;
 	struct gfs2_bufdata *bd;