diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c
index 80ffbe3..f0e26c4 100644
--- a/fs/ocfs2/alloc.c
+++ b/fs/ocfs2/alloc.c
@@ -50,6 +50,7 @@
 #include "uptodate.h"
 #include "xattr.h"
 #include "refcounttree.h"
+#include "ocfs2_trace.h"
 
 #include "buffer_head_io.h"
 
@@ -886,8 +887,7 @@
 	struct ocfs2_extent_block *eb =
 		(struct ocfs2_extent_block *)bh->b_data;
 
-	mlog(0, "Validating extent block %llu\n",
-	     (unsigned long long)bh->b_blocknr);
+	trace_ocfs2_validate_extent_block((unsigned long long)bh->b_blocknr);
 
 	BUG_ON(!buffer_uptodate(bh));
 
@@ -985,7 +985,7 @@
 bail:
 	brelse(eb_bh);
 
-	mlog(0, "retval = %d\n", retval);
+	trace_ocfs2_num_free_extents(retval);
 	return retval;
 }
 
@@ -1194,8 +1194,11 @@
 	 * from new_cpos).
 	 */
 	if (root_end > new_cpos) {
-		mlog(0, "adjust the cluster end from %u to %u\n",
-		     root_end, new_cpos);
+		trace_ocfs2_adjust_rightmost_branch(
+			(unsigned long long)
+			ocfs2_metadata_cache_owner(et->et_ci),
+			root_end, new_cpos);
+
 		status = ocfs2_adjust_rightmost_branch(handle, et);
 		if (status) {
 			mlog_errno(status);
@@ -1527,7 +1530,10 @@
 	 * another tree level */
 	if (shift) {
 		BUG_ON(bh);
-		mlog(0, "need to shift tree depth (current = %d)\n", depth);
+		trace_ocfs2_grow_tree(
+			(unsigned long long)
+			ocfs2_metadata_cache_owner(et->et_ci),
+			depth);
 
 		/* ocfs2_shift_tree_depth will return us a buffer with
 		 * the new extent block (so we can pass that to
@@ -1557,7 +1563,6 @@
 
 	/* call ocfs2_add_branch to add the final part of the tree with
 	 * the new data. */
-	mlog(0, "add branch. bh = %p\n", bh);
 	ret = ocfs2_add_branch(handle, et, bh, last_eb_bh,
 			       meta_ac);
 	if (ret < 0) {
@@ -1632,8 +1637,9 @@
 	}
 	insert_index = i;
 
-	mlog(0, "ins %u: index %d, has_empty %d, next_free %d, count %d\n",
-	     insert_cpos, insert_index, has_empty, next_free, le16_to_cpu(el->l_count));
+	trace_ocfs2_rotate_leaf(insert_cpos, insert_index,
+				has_empty, next_free,
+				le16_to_cpu(el->l_count));
 
 	BUG_ON(insert_index < 0);
 	BUG_ON(insert_index >= le16_to_cpu(el->l_count));
@@ -2046,7 +2052,7 @@
 	left_el = path_leaf_el(left_path);
 	right_el = path_leaf_el(right_path);
 	for(i = left_path->p_tree_depth - 1; i > subtree_index; i--) {
-		mlog(0, "Adjust records at index %u\n", i);
+		trace_ocfs2_complete_edge_insert(i);
 
 		/*
 		 * One nice property of knowing that all of these
@@ -2376,7 +2382,9 @@
 		goto out;
 	}
 
-	mlog(0, "Insert: %u, first left path cpos: %u\n", insert_cpos, cpos);
+	trace_ocfs2_rotate_tree_right(
+		(unsigned long long)ocfs2_metadata_cache_owner(et->et_ci),
+		insert_cpos, cpos);
 
 	/*
 	 * What we want to do here is:
@@ -2405,8 +2413,10 @@
 	 * rotating subtrees.
 	 */
 	while (cpos && insert_cpos <= cpos) {
-		mlog(0, "Rotating a tree: ins. cpos: %u, left path cpos: %u\n",
-		     insert_cpos, cpos);
+		trace_ocfs2_rotate_tree_right(
+			(unsigned long long)
+			ocfs2_metadata_cache_owner(et->et_ci),
+			insert_cpos, cpos);
 
 		ret = ocfs2_find_path(et->et_ci, left_path, cpos);
 		if (ret) {
@@ -2448,10 +2458,10 @@
 
 		start = ocfs2_find_subtree_root(et, left_path, right_path);
 
-		mlog(0, "Subtree root at index %d (blk %llu, depth %d)\n",
-		     start,
-		     (unsigned long long) right_path->p_node[start].bh->b_blocknr,
-		     right_path->p_tree_depth);
+		trace_ocfs2_rotate_subtree(start,
+			(unsigned long long)
+			right_path->p_node[start].bh->b_blocknr,
+			right_path->p_tree_depth);
 
 		ret = ocfs2_extend_rotate_transaction(handle, start,
 						      orig_credits, right_path);
@@ -2951,8 +2961,7 @@
 		subtree_root = ocfs2_find_subtree_root(et, left_path,
 						       right_path);
 
-		mlog(0, "Subtree root at index %d (blk %llu, depth %d)\n",
-		     subtree_root,
+		trace_ocfs2_rotate_subtree(subtree_root,
 		     (unsigned long long)
 		     right_path->p_node[subtree_root].bh->b_blocknr,
 		     right_path->p_tree_depth);
@@ -3976,9 +3985,11 @@
 			goto out;
 		}
 
-		mlog(0, "Append may need a left path update. cpos: %u, "
-		     "left_cpos: %u\n", le32_to_cpu(insert_rec->e_cpos),
-		     left_cpos);
+		trace_ocfs2_append_rec_to_path(
+			(unsigned long long)
+			ocfs2_metadata_cache_owner(et->et_ci),
+			le32_to_cpu(insert_rec->e_cpos),
+			left_cpos);
 
 		/*
 		 * No need to worry if the append is already in the
@@ -4665,9 +4676,9 @@
 	struct ocfs2_insert_type insert = {0, };
 	struct ocfs2_extent_rec rec;
 
-	mlog(0, "add %u clusters at position %u to owner %llu\n",
-	     new_clusters, cpos,
-	     (unsigned long long)ocfs2_metadata_cache_owner(et->et_ci));
+	trace_ocfs2_insert_extent_start(
+		(unsigned long long)ocfs2_metadata_cache_owner(et->et_ci),
+		cpos, new_clusters);
 
 	memset(&rec, 0, sizeof(rec));
 	rec.e_cpos = cpu_to_le32(cpos);
@@ -4687,11 +4698,9 @@
 		goto bail;
 	}
 
-	mlog(0, "Insert.appending: %u, Insert.Contig: %u, "
-	     "Insert.contig_index: %d, Insert.free_records: %d, "
-	     "Insert.tree_depth: %d\n",
-	     insert.ins_appending, insert.ins_contig, insert.ins_contig_index,
-	     free_records, insert.ins_tree_depth);
+	trace_ocfs2_insert_extent(insert.ins_appending, insert.ins_contig,
+				  insert.ins_contig_index, free_records,
+				  insert.ins_tree_depth);
 
 	if (insert.ins_contig == CONTIG_NONE && free_records == 0) {
 		status = ocfs2_grow_tree(handle, et,
@@ -4732,7 +4741,7 @@
 				struct ocfs2_alloc_context *meta_ac,
 				enum ocfs2_alloc_restarted *reason_ret)
 {
-	int status = 0;
+	int status = 0, err = 0;
 	int free_extents;
 	enum ocfs2_alloc_restarted reason = RESTART_NONE;
 	u32 bit_off, num_bits;
@@ -4759,14 +4768,14 @@
 	 * 2) we are so fragmented, we've needed to add metadata too
 	 *    many times. */
 	if (!free_extents && !meta_ac) {
-		mlog(0, "we haven't reserved any metadata!\n");
+		err = -1;
 		status = -EAGAIN;
 		reason = RESTART_META;
 		goto leave;
 	} else if ((!free_extents)
 		   && (ocfs2_alloc_context_bits_left(meta_ac)
 		       < ocfs2_extend_meta_needed(et->et_root_el))) {
-		mlog(0, "filesystem is really fragmented...\n");
+		err = -2;
 		status = -EAGAIN;
 		reason = RESTART_META;
 		goto leave;
@@ -4791,9 +4800,9 @@
 	}
 
 	block = ocfs2_clusters_to_blocks(osb->sb, bit_off);
-	mlog(0, "Allocating %u clusters at block %u for owner %llu\n",
-	     num_bits, bit_off,
-	     (unsigned long long)ocfs2_metadata_cache_owner(et->et_ci));
+	trace_ocfs2_add_clusters_in_btree(
+	     (unsigned long long)ocfs2_metadata_cache_owner(et->et_ci),
+	     bit_off, num_bits);
 	status = ocfs2_insert_extent(handle, et, *logical_offset, block,
 				     num_bits, flags, meta_ac);
 	if (status < 0) {
@@ -4807,8 +4816,7 @@
 	*logical_offset += num_bits;
 
 	if (clusters_to_add) {
-		mlog(0, "need to alloc once more, wanted = %u\n",
-		     clusters_to_add);
+		err = clusters_to_add;
 		status = -EAGAIN;
 		reason = RESTART_TRANS;
 	}
@@ -4816,6 +4824,7 @@
 leave:
 	if (reason_ret)
 		*reason_ret = reason;
+	trace_ocfs2_add_clusters_in_btree_ret(status, reason, err);
 	return status;
 }
 
@@ -5041,9 +5050,9 @@
 
 	ctxt.c_has_empty_extent = ocfs2_is_empty_extent(&el->l_recs[0]);
 
-	mlog(0, "index: %d, contig: %u, has_empty: %u, split_covers: %u\n",
-	     split_index, ctxt.c_contig_type, ctxt.c_has_empty_extent,
-	     ctxt.c_split_covers_rec);
+	trace_ocfs2_split_extent(split_index, ctxt.c_contig_type,
+				 ctxt.c_has_empty_extent,
+				 ctxt.c_split_covers_rec);
 
 	if (ctxt.c_contig_type == CONTIG_NONE) {
 		if (ctxt.c_split_covers_rec)
@@ -5177,8 +5186,9 @@
 {
 	int ret;
 
-	mlog(0, "Inode %lu cpos %u, len %u, phys clusters %u\n",
-	     inode->i_ino, cpos, len, phys);
+	trace_ocfs2_mark_extent_written(
+		(unsigned long long)OCFS2_I(inode)->ip_blkno,
+		cpos, len, phys);
 
 	if (!ocfs2_writes_unwritten_extents(OCFS2_SB(inode->i_sb))) {
 		ocfs2_error(inode->i_sb, "Inode %llu has unwritten extents "
@@ -5497,11 +5507,10 @@
 
 	BUG_ON(cpos < le32_to_cpu(rec->e_cpos) || trunc_range > rec_range);
 
-	mlog(0, "Owner %llu, remove (cpos %u, len %u). Existing index %d "
-	     "(cpos %u, len %u)\n",
-	     (unsigned long long)ocfs2_metadata_cache_owner(et->et_ci),
-	     cpos, len, index,
-	     le32_to_cpu(rec->e_cpos), ocfs2_rec_clusters(el, rec));
+	trace_ocfs2_remove_extent(
+		(unsigned long long)ocfs2_metadata_cache_owner(et->et_ci),
+		cpos, len, index, le32_to_cpu(rec->e_cpos),
+		ocfs2_rec_clusters(el, rec));
 
 	if (le32_to_cpu(rec->e_cpos) == cpos || rec_range == trunc_range) {
 		ret = ocfs2_truncate_rec(handle, et, path, index, dealloc,
@@ -5780,9 +5789,6 @@
 	struct ocfs2_dinode *di;
 	struct ocfs2_truncate_log *tl;
 
-	mlog(0, "start_blk = %llu, num_clusters = %u\n",
-	     (unsigned long long)start_blk, num_clusters);
-
 	BUG_ON(mutex_trylock(&tl_inode->i_mutex));
 
 	start_cluster = ocfs2_blocks_to_clusters(osb->sb, start_blk);
@@ -5819,10 +5825,9 @@
 		goto bail;
 	}
 
-	mlog(0, "Log truncate of %u clusters starting at cluster %u to "
-	     "%llu (index = %d)\n", num_clusters, start_cluster,
-	     (unsigned long long)OCFS2_I(tl_inode)->ip_blkno, index);
-
+	trace_ocfs2_truncate_log_append(
+		(unsigned long long)OCFS2_I(tl_inode)->ip_blkno, index,
+		start_cluster, num_clusters);
 	if (ocfs2_truncate_log_can_coalesce(tl, start_cluster)) {
 		/*
 		 * Move index back to the record we are coalescing with.
@@ -5831,9 +5836,10 @@
 		index--;
 
 		num_clusters += le32_to_cpu(tl->tl_recs[index].t_clusters);
-		mlog(0, "Coalesce with index %u (start = %u, clusters = %u)\n",
-		     index, le32_to_cpu(tl->tl_recs[index].t_start),
-		     num_clusters);
+		trace_ocfs2_truncate_log_append(
+			(unsigned long long)OCFS2_I(tl_inode)->ip_blkno,
+			index, le32_to_cpu(tl->tl_recs[index].t_start),
+			num_clusters);
 	} else {
 		tl->tl_recs[index].t_start = cpu_to_le32(start_cluster);
 		tl->tl_used = cpu_to_le16(index + 1);
@@ -5897,8 +5903,9 @@
 		/* if start_blk is not set, we ignore the record as
 		 * invalid. */
 		if (start_blk) {
-			mlog(0, "free record %d, start = %u, clusters = %u\n",
-			     i, le32_to_cpu(rec.t_start), num_clusters);
+			trace_ocfs2_replay_truncate_records(
+				(unsigned long long)OCFS2_I(tl_inode)->ip_blkno,
+				i, le32_to_cpu(rec.t_start), num_clusters);
 
 			status = ocfs2_free_clusters(handle, data_alloc_inode,
 						     data_alloc_bh, start_blk,
@@ -5941,8 +5948,9 @@
 
 	tl = &di->id2.i_dealloc;
 	num_to_flush = le16_to_cpu(tl->tl_used);
-	mlog(0, "Flush %u records from truncate log #%llu\n",
-	     num_to_flush, (unsigned long long)OCFS2_I(tl_inode)->ip_blkno);
+	trace_ocfs2_flush_truncate_log(
+		(unsigned long long)OCFS2_I(tl_inode)->ip_blkno,
+		num_to_flush);
 	if (!num_to_flush) {
 		status = 0;
 		goto out;
@@ -6079,7 +6087,7 @@
 
 	*tl_copy = NULL;
 
-	mlog(0, "recover truncate log from slot %d\n", slot_num);
+	trace_ocfs2_begin_truncate_log_recovery(slot_num);
 
 	status = ocfs2_get_truncate_log_info(osb, slot_num, &tl_inode, &tl_bh);
 	if (status < 0) {
@@ -6096,8 +6104,7 @@
 
 	tl = &di->id2.i_dealloc;
 	if (le16_to_cpu(tl->tl_used)) {
-		mlog(0, "We'll have %u logs to recover\n",
-		     le16_to_cpu(tl->tl_used));
+		trace_ocfs2_truncate_log_recovery_num(le16_to_cpu(tl->tl_used));
 
 		*tl_copy = kmalloc(tl_bh->b_size, GFP_KERNEL);
 		if (!(*tl_copy)) {
@@ -6154,8 +6161,9 @@
 
 	tl = &tl_copy->id2.i_dealloc;
 	num_recs = le16_to_cpu(tl->tl_used);
-	mlog(0, "cleanup %u records from %llu\n", num_recs,
-	     (unsigned long long)le64_to_cpu(tl_copy->i_blkno));
+	trace_ocfs2_complete_truncate_log_recovery(
+		(unsigned long long)le64_to_cpu(tl_copy->i_blkno),
+		num_recs);
 
 	mutex_lock(&tl_inode->i_mutex);
 	for(i = 0; i < num_recs; i++) {
@@ -6313,8 +6321,8 @@
 		else
 			bg_blkno = ocfs2_which_suballoc_group(head->free_blk,
 							      head->free_bit);
-		mlog(0, "Free bit: (bit %u, blkno %llu)\n",
-		     head->free_bit, (unsigned long long)head->free_blk);
+		trace_ocfs2_free_cached_blocks(
+		     (unsigned long long)head->free_blk, head->free_bit);
 
 		ret = ocfs2_free_suballoc_bits(handle, inode, di_bh,
 					       head->free_bit, bg_blkno, 1);
@@ -6367,8 +6375,7 @@
 		return ret;
 	}
 
-	mlog(0, "Insert clusters: (bit %u, blk %llu)\n",
-	     bit, (unsigned long long)blkno);
+	trace_ocfs2_cache_cluster_dealloc((unsigned long long)blkno, bit);
 
 	item->free_blk = blkno;
 	item->free_bit = bit;
@@ -6443,8 +6450,8 @@
 		fl = ctxt->c_first_suballocator;
 
 		if (fl->f_first) {
-			mlog(0, "Free items: (type %u, slot %d)\n",
-			     fl->f_inode_type, fl->f_slot);
+			trace_ocfs2_run_deallocs(fl->f_inode_type,
+						 fl->f_slot);
 			ret2 = ocfs2_free_cached_blocks(osb,
 							fl->f_inode_type,
 							fl->f_slot,
@@ -6521,8 +6528,9 @@
 		goto out;
 	}
 
-	mlog(0, "Insert: (type %d, slot %u, bit %u, blk %llu)\n",
-	     type, slot, bit, (unsigned long long)blkno);
+	trace_ocfs2_cache_block_dealloc(type, slot,
+					(unsigned long long)suballoc,
+					(unsigned long long)blkno, bit);
 
 	item->free_bg = suballoc;
 	item->free_blk = blkno;
@@ -7002,8 +7010,11 @@
 		goto bail;
 	}
 
-	mlog(0, "inode->ip_clusters = %u, tree_depth = %u\n",
-	     OCFS2_I(inode)->ip_clusters, path->p_tree_depth);
+	trace_ocfs2_commit_truncate(
+		(unsigned long long)OCFS2_I(inode)->ip_blkno,
+		new_highest_cpos,
+		OCFS2_I(inode)->ip_clusters,
+		path->p_tree_depth);
 
 	/*
 	 * By now, el will point to the extent list on the bottom most