gfs2: Remove vestigial bd_ops

Field bd_ops was set but never used, so I removed it, and all
code supporting it.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Acked-by: Steven Whitehouse <swhiteho@redhat.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>

fs/gfs2/incore.h

@@ -165,7 +165,6 @@ struct gfs2_bufdata {
 	u64 bd_blkno;
 
 	struct list_head bd_list;
-	const struct gfs2_log_operations *bd_ops;
 
 	struct gfs2_trans *bd_tr;
 	struct list_head bd_ail_st_list;

fs/gfs2/log.c

@@ -605,7 +605,6 @@ void gfs2_add_revoke(struct gfs2_sbd *sdp, struct gfs2_bufdata *bd)
 	bd->bd_blkno = bh->b_blocknr;
 	gfs2_remove_from_ail(bd); /* drops ref on bh */
 	bd->bd_bh = NULL;
-	bd->bd_ops = &gfs2_revoke_lops;
 	sdp->sd_log_num_revoke++;
 	atomic_inc(&gl->gl_revokes);
 	set_bit(GLF_LFLUSH, &gl->gl_flags);

fs/gfs2/trans.c

@@ -124,15 +124,13 @@ void gfs2_trans_end(struct gfs2_sbd *sdp)
 }
 
 static struct gfs2_bufdata *gfs2_alloc_bufdata(struct gfs2_glock *gl,
-					       struct buffer_head *bh,
-					       const struct gfs2_log_operations *lops)
+					       struct buffer_head *bh)
 {
 	struct gfs2_bufdata *bd;
 
 	bd = kmem_cache_zalloc(gfs2_bufdata_cachep, GFP_NOFS | __GFP_NOFAIL);
 	bd->bd_bh = bh;
 	bd->bd_gl = gl;
-	bd->bd_ops = lops;
 	INIT_LIST_HEAD(&bd->bd_list);
 	bh->b_private = bd;
 	return bd;
@@ -169,7 +167,7 @@ void gfs2_trans_add_data(struct gfs2_glock *gl, struct buffer_head *bh)
 		gfs2_log_unlock(sdp);
 		unlock_buffer(bh);
 		if (bh->b_private == NULL)
-			bd = gfs2_alloc_bufdata(gl, bh, &gfs2_databuf_lops);
+			bd = gfs2_alloc_bufdata(gl, bh);
 		else
 			bd = bh->b_private;
 		lock_buffer(bh);
@@ -210,7 +208,7 @@ void gfs2_trans_add_meta(struct gfs2_glock *gl, struct buffer_head *bh)
 		unlock_buffer(bh);
 		lock_page(bh->b_page);
 		if (bh->b_private == NULL)
-			bd = gfs2_alloc_bufdata(gl, bh, &gfs2_buf_lops);
+			bd = gfs2_alloc_bufdata(gl, bh);
 		else
 			bd = bh->b_private;
 		unlock_page(bh->b_page);