[GFS2] Fix some bugs

Fix a bug I introduced earlier with a kfree() and usage of
a structure in the wrong order. Also try and get the counts
of the journaled data buffers "more correct". Still some work
to do in this area though.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

fs/gfs2/log.c

@@ -597,8 +597,6 @@ void gfs2_log_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr)
 	sdp->sd_vfs->s_dirt = 1;
 	unlock_from_trans(sdp);
 
-	kfree(tr);
-
 	gfs2_log_lock(sdp);
 	if (sdp->sd_log_num_buf > gfs2_tune_get(sdp, gt_incore_log_blocks)) {
 		gfs2_log_unlock(sdp);

fs/gfs2/lops.c

@@ -474,6 +474,7 @@ static void databuf_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le)
 		gfs2_trans_add_gl(bd->bd_gl);
 		list_add(&bd->bd_list_tr, &tr->tr_list_buf);
 		gfs2_pin(sdp, bd->bd_bh);
+		tr->tr_num_buf_new++;
 	}
 	gfs2_log_lock(sdp);
 	if (!list_empty(&le->le_list)) {

fs/gfs2/trans.c

@@ -87,7 +87,6 @@ int gfs2_trans_begin_i(struct gfs2_sbd *sdp, unsigned int blocks,
 void gfs2_trans_end(struct gfs2_sbd *sdp)
 {
 	struct gfs2_trans *tr;
-	struct gfs2_holder *t_gh;
 
 	tr = current->journal_info;
 	current->journal_info = NULL;
@@ -95,13 +94,11 @@ void gfs2_trans_end(struct gfs2_sbd *sdp)
 	if (gfs2_assert_warn(sdp, tr))
 		return;
 
-	t_gh = &tr->tr_t_gh;
-
 	if (!tr->tr_touched) {
 		gfs2_log_release(sdp, tr->tr_reserved);
 
-		gfs2_glock_dq(t_gh);
-		gfs2_holder_uninit(t_gh);
+		gfs2_glock_dq(&tr->tr_t_gh);
+		gfs2_holder_uninit(&tr->tr_t_gh);
 
 		kfree(tr);
 		return;
@@ -120,8 +117,10 @@ void gfs2_trans_end(struct gfs2_sbd *sdp)
 
 	gfs2_log_commit(sdp, tr);
 
-	gfs2_glock_dq(t_gh);
-	gfs2_holder_uninit(t_gh);
+        gfs2_glock_dq(&tr->tr_t_gh);
+        gfs2_holder_uninit(&tr->tr_t_gh);
+
+        kfree(tr);
 
 	if (sdp->sd_vfs->s_flags & MS_SYNCHRONOUS)
 		gfs2_log_flush(sdp);