diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c
index 00a94d5..7aac202 100644
--- a/fs/ext4/balloc.c
+++ b/fs/ext4/balloc.c
@@ -379,26 +379,28 @@
 	bad = 0;
 	prev = NULL;
 
-	printk("Block Allocation Reservation Windows Map (%s):\n", fn);
+	printk(KERN_DEBUG "Block Allocation Reservation "
+	       "Windows Map (%s):\n", fn);
 	while (n) {
 		rsv = rb_entry(n, struct ext4_reserve_window_node, rsv_node);
 		if (verbose)
-			printk("reservation window 0x%p "
+			printk(KERN_DEBUG "reservation window 0x%p "
 			       "start:  %llu, end:  %llu\n",
 			       rsv, rsv->rsv_start, rsv->rsv_end);
 		if (rsv->rsv_start && rsv->rsv_start >= rsv->rsv_end) {
-			printk("Bad reservation %p (start >= end)\n",
+			printk(KERN_DEBUG "Bad reservation %p (start >= end)\n",
 			       rsv);
 			bad = 1;
 		}
 		if (prev && prev->rsv_end >= rsv->rsv_start) {
-			printk("Bad reservation %p (prev->end >= start)\n",
-			       rsv);
+			printk(KERN_DEBUG "Bad reservation %p "
+			       "(prev->end >= start)\n", rsv);
 			bad = 1;
 		}
 		if (bad) {
 			if (!verbose) {
-				printk("Restarting reservation walk in verbose mode\n");
+				printk(KERN_DEBUG "Restarting reservation "
+				       "walk in verbose mode\n");
 				verbose = 1;
 				goto restart;
 			}
@@ -406,7 +408,7 @@
 		n = rb_next(n);
 		prev = rsv;
 	}
-	printk("Window map complete.\n");
+	printk(KERN_DEBUG "Window map complete.\n");
 	BUG_ON(bad);
 }
 #define rsv_window_dump(root, verbose) \
@@ -1702,7 +1704,7 @@
 	sb = inode->i_sb;
 	if (!sb) {
 		*errp = -ENODEV;
-		printk("ext4_new_block: nonexistent device");
+		printk(KERN_ERR "ext4_new_block: nonexistent superblock");
 		return 0;
 	}
 
@@ -1884,8 +1886,8 @@
 		for (i = 0; i < num; i++) {
 			if (ext4_test_bit(grp_alloc_blk+i,
 					bh2jh(bitmap_bh)->b_committed_data)) {
-				printk("%s: block was unexpectedly set in "
-					"b_committed_data\n", __func__);
+				printk(KERN_ERR "%s: block was unexpectedly "
+				       "set in b_committed_data\n", __func__);
 			}
 		}
 	}
@@ -2093,10 +2095,9 @@
 		bitmap_count += x;
 	}
 	brelse(bitmap_bh);
-	printk("ext4_count_free_blocks: stored = %llu"
-		", computed = %llu, %llu\n",
-		ext4_free_blocks_count(es),
-		desc_count, bitmap_count);
+	printk(KERN_DEBUG "ext4_count_free_blocks: stored = %llu"
+		", computed = %llu, %llu\n", ext4_free_blocks_count(es),
+	       desc_count, bitmap_count);
 	return bitmap_count;
 #else
 	desc_count = 0;
diff --git a/fs/ext4/dir.c b/fs/ext4/dir.c
index ec8e33b..ac873db 100644
--- a/fs/ext4/dir.c
+++ b/fs/ext4/dir.c
@@ -400,7 +400,8 @@
 	sb = inode->i_sb;
 
 	if (!fname) {
-		printk("call_filldir: called with null fname?!?\n");
+		printk(KERN_ERR "ext4: call_filldir: called with "
+		       "null fname?!?\n");
 		return 0;
 	}
 	curr_pos = hash2pos(fname->hash, fname->minor_hash);
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index b24d3c5..a8db7fd 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -440,9 +440,10 @@
 		for (k = 0; k < le16_to_cpu(eh->eh_entries); k++, ix++) {
 		  if (k != 0 &&
 		      le32_to_cpu(ix->ei_block) <= le32_to_cpu(ix[-1].ei_block)) {
-				printk("k=%d, ix=0x%p, first=0x%p\n", k,
-					ix, EXT_FIRST_INDEX(eh));
-				printk("%u <= %u\n",
+				printk(KERN_DEBUG "k=%d, ix=0x%p, "
+				       "first=0x%p\n", k,
+				       ix, EXT_FIRST_INDEX(eh));
+				printk(KERN_DEBUG "%u <= %u\n",
 				       le32_to_cpu(ix->ei_block),
 				       le32_to_cpu(ix[-1].ei_block));
 			}
@@ -2142,7 +2143,7 @@
 	 */
 
 	if (test_opt(sb, EXTENTS)) {
-		printk("EXT4-fs: file extents enabled");
+		printk(KERN_INFO "EXT4-fs: file extents enabled");
 #ifdef AGGRESSIVE_TEST
 		printk(", aggressive tests");
 #endif
diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index f344834..45c66a0 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -170,17 +170,18 @@
 	ext4_group_t flex_group;
 
 	if (atomic_read(&inode->i_count) > 1) {
-		printk ("ext4_free_inode: inode has count=%d\n",
-					atomic_read(&inode->i_count));
+		printk(KERN_ERR "ext4_free_inode: inode has count=%d\n",
+		       atomic_read(&inode->i_count));
 		return;
 	}
 	if (inode->i_nlink) {
-		printk ("ext4_free_inode: inode has nlink=%d\n",
-			inode->i_nlink);
+		printk(KERN_ERR "ext4_free_inode: inode has nlink=%d\n",
+		       inode->i_nlink);
 		return;
 	}
 	if (!sb) {
-		printk("ext4_free_inode: inode on nonexistent device\n");
+		printk(KERN_ERR "ext4_free_inode: inode on "
+		       "nonexistent device\n");
 		return;
 	}
 	sbi = EXT4_SB(sb);
@@ -989,8 +990,9 @@
 		bitmap_count += x;
 	}
 	brelse(bitmap_bh);
-	printk("ext4_count_free_inodes: stored = %u, computed = %lu, %lu\n",
-		le32_to_cpu(es->s_free_inodes_count), desc_count, bitmap_count);
+	printk(KERN_DEBUG "ext4_count_free_inodes: "
+	       "stored = %u, computed = %lu, %lu\n",
+	       le32_to_cpu(es->s_free_inodes_count), desc_count, bitmap_count);
 	return desc_count;
 #else
 	desc_count = 0;
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index e0e3a5e..0db2ccf 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -477,9 +477,10 @@
 		b2 = (unsigned char *) bitmap;
 		for (i = 0; i < e4b->bd_sb->s_blocksize; i++) {
 			if (b1[i] != b2[i]) {
-				printk("corruption in group %lu at byte %u(%u):"
-				       " %x in copy != %x on disk/prealloc\n",
-					e4b->bd_group, i, i * 8, b1[i], b2[i]);
+				printk(KERN_ERR "corruption in group %lu "
+				       "at byte %u(%u): %x in copy != %x "
+				       "on disk/prealloc\n",
+				       e4b->bd_group, i, i * 8, b1[i], b2[i]);
 				BUG();
 			}
 		}
@@ -2560,7 +2561,7 @@
 	ext4_mb_init_per_dev_proc(sb);
 	ext4_mb_history_init(sb);
 
-	printk("EXT4-fs: mballoc enabled\n");
+	printk(KERN_INFO "EXT4-fs: mballoc enabled\n");
 	return 0;
 }
 
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index 387ad98..978b57f 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -254,12 +254,12 @@
  * Debug
  */
 #ifdef DX_DEBUG
-static void dx_show_index (char * label, struct dx_entry *entries)
+static void dx_show_index(char * label, struct dx_entry *entries)
 {
 	int i, n = dx_get_count (entries);
-	printk("%s index ", label);
+	printk(KERN_DEBUG "%s index ", label);
 	for (i = 0; i < n; i++) {
-		printk("%x->%lu ", i? dx_get_hash(entries + i) :
+		printk("%x->%lu ", i ? dx_get_hash(entries + i) :
 				0, (unsigned long)dx_get_block(entries + i));
 	}
 	printk("\n");
@@ -328,8 +328,9 @@
 		brelse (bh);
 	}
 	if (bcount)
-		printk("%snames %u, fullness %u (%u%%)\n", levels?"":"   ",
-			names, space/bcount,(space/bcount)*100/blocksize);
+		printk(KERN_DEBUG "%snames %u, fullness %u (%u%%)\n", 
+		       levels ? "" : "   ", names, space/bcount,
+		       (space/bcount)*100/blocksize);
 	return (struct stats) { names, space, bcount};
 }
 #endif /* DX_DEBUG */
@@ -635,8 +636,8 @@
 	int ret, err;
 	__u32 hashval;
 
-	dxtrace(printk("In htree_fill_tree, start hash: %x:%x\n", start_hash,
-		       start_minor_hash));
+	dxtrace(printk(KERN_DEBUG "In htree_fill_tree, start hash: %x:%x\n", 
+		       start_hash, start_minor_hash));
 	dir = dir_file->f_path.dentry->d_inode;
 	if (!(EXT4_I(dir)->i_flags & EXT4_INDEX_FL)) {
 		hinfo.hash_version = EXT4_SB(dir->i_sb)->s_def_hash_version;
@@ -694,8 +695,8 @@
 			break;
 	}
 	dx_release(frames);
-	dxtrace(printk("Fill tree: returned %d entries, next hash: %x\n",
-		       count, *next_hash));
+	dxtrace(printk(KERN_DEBUG "Fill tree: returned %d entries, "
+		       "next hash: %x\n", count, *next_hash));
 	return count;
 errout:
 	dx_release(frames);
@@ -882,7 +883,8 @@
 		 */
 		if (bh || (err != ERR_BAD_DX_DIR))
 			return bh;
-		dxtrace(printk("ext4_find_entry: dx failed, falling back\n"));
+		dxtrace(printk(KERN_DEBUG "ext4_find_entry: dx failed, "
+			       "falling back\n"));
 	}
 	nblocks = dir->i_size >> EXT4_BLOCK_SIZE_BITS(sb);
 	start = EXT4_I(dir)->i_dir_start_lookup;
@@ -1025,7 +1027,7 @@
 
 	*err = -ENOENT;
 errout:
-	dxtrace(printk("%s not found\n", name));
+	dxtrace(printk(KERN_DEBUG "%s not found\n", name));
 	dx_release (frames);
 	return NULL;
 }
@@ -1377,7 +1379,7 @@
 	struct fake_dirent *fde;
 
 	blocksize =  dir->i_sb->s_blocksize;
-	dxtrace(printk("Creating index\n"));
+	dxtrace(printk(KERN_DEBUG "Creating index\n"));
 	retval = ext4_journal_get_write_access(handle, bh);
 	if (retval) {
 		ext4_std_error(dir->i_sb, retval);
@@ -1527,7 +1529,7 @@
 	}
 
 	/* Block full, should compress but for now just split */
-	dxtrace(printk("using %u of %u node entries\n",
+	dxtrace(printk(KERN_DEBUG "using %u of %u node entries\n",
 		       dx_get_count(entries), dx_get_limit(entries)));
 	/* Need to split index? */
 	if (dx_get_count(entries) == dx_get_limit(entries)) {
@@ -1559,7 +1561,8 @@
 		if (levels) {
 			unsigned icount1 = icount/2, icount2 = icount - icount1;
 			unsigned hash2 = dx_get_hash(entries + icount1);
-			dxtrace(printk("Split index %i/%i\n", icount1, icount2));
+			dxtrace(printk(KERN_DEBUG "Split index %i/%i\n",
+				       icount1, icount2));
 
 			BUFFER_TRACE(frame->bh, "get_write_access"); /* index root */
 			err = ext4_journal_get_write_access(handle,
@@ -1588,7 +1591,8 @@
 				goto journal_error;
 			brelse (bh2);
 		} else {
-			dxtrace(printk("Creating second level index...\n"));
+			dxtrace(printk(KERN_DEBUG
+				       "Creating second level index...\n"));
 			memcpy((char *) entries2, (char *) entries,
 			       icount * sizeof(struct dx_entry));
 			dx_set_limit(entries2, dx_node_limit(dir));
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 566344b..ee86954 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -981,7 +981,7 @@
 	/*todo: use simple_strtoll with >32bit ext4 */
 	sb_block = simple_strtoul(options, &options, 0);
 	if (*options && *options != ',') {
-		printk("EXT4-fs: Invalid sb specification: %s\n",
+		printk(KERN_ERR "EXT4-fs: Invalid sb specification: %s\n",
 		       (char *) *data);
 		return 1;
 	}
@@ -1082,7 +1082,8 @@
 #else
 		case Opt_user_xattr:
 		case Opt_nouser_xattr:
-			printk("EXT4 (no)user_xattr options not supported\n");
+			printk(KERN_ERR "EXT4 (no)user_xattr options "
+			       "not supported\n");
 			break;
 #endif
 #ifdef CONFIG_EXT4DEV_FS_POSIX_ACL
@@ -1095,7 +1096,8 @@
 #else
 		case Opt_acl:
 		case Opt_noacl:
-			printk("EXT4 (no)acl options not supported\n");
+			printk(KERN_ERR "EXT4 (no)acl options "
+			       "not supported\n");
 			break;
 #endif
 		case Opt_reservation:
@@ -1189,8 +1191,8 @@
 			     sb_any_quota_suspended(sb)) &&
 			    !sbi->s_qf_names[qtype]) {
 				printk(KERN_ERR
-					"EXT4-fs: Cannot change journaled "
-					"quota options when quota turned on.\n");
+				       "EXT4-fs: Cannot change journaled "
+				       "quota options when quota turned on.\n");
 				return 0;
 			}
 			qname = match_strdup(&args[0]);
@@ -1473,14 +1475,14 @@
 			EXT4_INODES_PER_GROUP(sb),
 			sbi->s_mount_opt);
 
-	printk(KERN_INFO "EXT4 FS on %s, ", sb->s_id);
 	if (EXT4_SB(sb)->s_journal->j_inode == NULL) {
 		char b[BDEVNAME_SIZE];
 
-		printk("external journal on %s\n",
-			bdevname(EXT4_SB(sb)->s_journal->j_dev, b));
+		printk(KERN_INFO "EXT4 FS on %s, external journal on %s\n",
+		       sb->s_id, bdevname(EXT4_SB(sb)->s_journal->j_dev, b));
 	} else {
-		printk("internal journal\n");
+		printk(KERN_INFO "EXT4 FS on %s, internal journal\n",
+		       sb->s_id);
 	}
 	return res;
 }
@@ -2715,6 +2717,11 @@
 			return -EINVAL;
 	}
 
+	if (journal->j_flags & JBD2_BARRIER)
+		printk(KERN_INFO "EXT4-fs: barriers enabled\n");
+	else
+		printk(KERN_INFO "EXT4-fs: barriers disabled\n");
+
 	if (!really_read_only && test_opt(sb, UPDATE_JOURNAL)) {
 		err = jbd2_journal_update_format(journal);
 		if (err)  {