jbd2: Unify log messages in jbd2 code

Some jbd2 code prints out kernel messages with "JBD2: " prefix, at the
same time other jbd2 code prints with "JBD: " prefix. Unify the prefix
to "JBD2: ".

Signed-off-by: Eryu Guan <guaneryu@gmail.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

fs/jbd2/commit.c

@@ -352,7 +352,7 @@ void jbd2_journal_commit_transaction(journal_t *journal)
 	J_ASSERT(commit_transaction->t_state == T_RUNNING);
 
 	trace_jbd2_start_commit(journal, commit_transaction);
-	jbd_debug(1, "JBD: starting commit of transaction %d\n",
+	jbd_debug(1, "JBD2: starting commit of transaction %d\n",
 			commit_transaction->t_tid);
 
 	write_lock(&journal->j_state_lock);
@@ -427,7 +427,7 @@ void jbd2_journal_commit_transaction(journal_t *journal)
 	__jbd2_journal_clean_checkpoint_list(journal);
 	spin_unlock(&journal->j_list_lock);
 
-	jbd_debug (3, "JBD: commit phase 1\n");
+	jbd_debug(3, "JBD2: commit phase 1\n");
 
 	/*
 	 * Switch to a new revoke table.
@@ -447,7 +447,7 @@ void jbd2_journal_commit_transaction(journal_t *journal)
 	wake_up(&journal->j_wait_transaction_locked);
 	write_unlock(&journal->j_state_lock);
 
-	jbd_debug (3, "JBD: commit phase 2\n");
+	jbd_debug(3, "JBD2: commit phase 2\n");
 
 	/*
 	 * Now start flushing things to disk, in the order they appear
@@ -462,7 +462,7 @@ void jbd2_journal_commit_transaction(journal_t *journal)
 					  WRITE_SYNC);
 	blk_finish_plug(&plug);
 
-	jbd_debug(3, "JBD: commit phase 2\n");
+	jbd_debug(3, "JBD2: commit phase 2\n");
 
 	/*
 	 * Way to go: we have now written out all of the data for a
@@ -522,7 +522,7 @@ void jbd2_journal_commit_transaction(journal_t *journal)
 
 			J_ASSERT (bufs == 0);
 
-			jbd_debug(4, "JBD: get descriptor\n");
+			jbd_debug(4, "JBD2: get descriptor\n");
 
 			descriptor = jbd2_journal_get_descriptor_buffer(journal);
 			if (!descriptor) {
@@ -531,7 +531,7 @@ void jbd2_journal_commit_transaction(journal_t *journal)
 			}
 
 			bh = jh2bh(descriptor);
-			jbd_debug(4, "JBD: got buffer %llu (%p)\n",
+			jbd_debug(4, "JBD2: got buffer %llu (%p)\n",
 				(unsigned long long)bh->b_blocknr, bh->b_data);
 			header = (journal_header_t *)&bh->b_data[0];
 			header->h_magic     = cpu_to_be32(JBD2_MAGIC_NUMBER);
@@ -625,7 +625,7 @@ void jbd2_journal_commit_transaction(journal_t *journal)
 		    commit_transaction->t_buffers == NULL ||
 		    space_left < tag_bytes + 16) {
 
-			jbd_debug(4, "JBD: Submit %d IOs\n", bufs);
+			jbd_debug(4, "JBD2: Submit %d IOs\n", bufs);
 
 			/* Write an end-of-descriptor marker before
                            submitting the IOs.  "tag" still points to
@@ -707,7 +707,7 @@ start_journal_io:
 	   so we incur less scheduling load.
 	*/
 
-	jbd_debug(3, "JBD: commit phase 3\n");
+	jbd_debug(3, "JBD2: commit phase 3\n");
 
 	/*
 	 * akpm: these are BJ_IO, and j_list_lock is not needed.
@@ -771,7 +771,7 @@ wait_for_iobuf:
 
 	J_ASSERT (commit_transaction->t_shadow_list == NULL);
 
-	jbd_debug(3, "JBD: commit phase 4\n");
+	jbd_debug(3, "JBD2: commit phase 4\n");
 
 	/* Here we wait for the revoke record and descriptor record buffers */
  wait_for_ctlbuf:
@@ -801,7 +801,7 @@ wait_for_iobuf:
 	if (err)
 		jbd2_journal_abort(journal, err);
 
-	jbd_debug(3, "JBD: commit phase 5\n");
+	jbd_debug(3, "JBD2: commit phase 5\n");
 	write_lock(&journal->j_state_lock);
 	J_ASSERT(commit_transaction->t_state == T_COMMIT_DFLUSH);
 	commit_transaction->t_state = T_COMMIT_JFLUSH;
@@ -830,7 +830,7 @@ wait_for_iobuf:
            transaction can be removed from any checkpoint list it was on
            before. */
 
-	jbd_debug(3, "JBD: commit phase 6\n");
+	jbd_debug(3, "JBD2: commit phase 6\n");
 
 	J_ASSERT(list_empty(&commit_transaction->t_inode_list));
 	J_ASSERT(commit_transaction->t_buffers == NULL);
@@ -964,7 +964,7 @@ restart_loop:
 
 	/* Done with this transaction! */
 
-	jbd_debug(3, "JBD: commit phase 7\n");
+	jbd_debug(3, "JBD2: commit phase 7\n");
 
 	J_ASSERT(commit_transaction->t_state == T_COMMIT_JFLUSH);
 
@@ -1039,7 +1039,7 @@ restart_loop:
 		journal->j_commit_callback(journal, commit_transaction);
 
 	trace_jbd2_end_commit(journal, commit_transaction);
-	jbd_debug(1, "JBD: commit %d complete, head %d\n",
+	jbd_debug(1, "JBD2: commit %d complete, head %d\n",
 		  journal->j_commit_sequence, journal->j_tail_sequence);
 	if (to_free)
 		kfree(commit_transaction);

fs/jbd2/journal.c

@@ -491,7 +491,7 @@ int __jbd2_log_start_commit(journal_t *journal, tid_t target)
 		 */
 
 		journal->j_commit_request = target;
-		jbd_debug(1, "JBD: requesting commit %d/%d\n",
+		jbd_debug(1, "JBD2: requesting commit %d/%d\n",
 			  journal->j_commit_request,
 			  journal->j_commit_sequence);
 		wake_up(&journal->j_wait_commit);
@@ -500,7 +500,7 @@ int __jbd2_log_start_commit(journal_t *journal, tid_t target)
 		/* This should never happen, but if it does, preserve
 		   the evidence before kjournald goes into a loop and
 		   increments j_commit_sequence beyond all recognition. */
-		WARN_ONCE(1, "jbd: bad log_start_commit: %u %u %u %u\n",
+		WARN_ONCE(1, "JBD2: bad log_start_commit: %u %u %u %u\n",
 			  journal->j_commit_request,
 			  journal->j_commit_sequence,
 			  target, journal->j_running_transaction ? 
@@ -645,7 +645,7 @@ int jbd2_log_wait_commit(journal_t *journal, tid_t tid)
 	}
 #endif
 	while (tid_gt(tid, journal->j_commit_sequence)) {
-		jbd_debug(1, "JBD: want %d, j_commit_sequence=%d\n",
+		jbd_debug(1, "JBD2: want %d, j_commit_sequence=%d\n",
 				  tid, journal->j_commit_sequence);
 		wake_up(&journal->j_wait_commit);
 		read_unlock(&journal->j_state_lock);
@@ -1093,7 +1093,7 @@ static int journal_reset(journal_t *journal)
 	first = be32_to_cpu(sb->s_first);
 	last = be32_to_cpu(sb->s_maxlen);
 	if (first + JBD2_MIN_JOURNAL_BLOCKS > last + 1) {
-		printk(KERN_ERR "JBD: Journal too short (blocks %llu-%llu).\n",
+		printk(KERN_ERR "JBD2: Journal too short (blocks %llu-%llu).\n",
 		       first, last);
 		journal_fail_superblock(journal);
 		return -EINVAL;
@@ -1139,7 +1139,7 @@ void jbd2_journal_update_superblock(journal_t *journal, int wait)
 	 */
 	if (sb->s_start == 0 && journal->j_tail_sequence ==
 				journal->j_transaction_sequence) {
-		jbd_debug(1,"JBD: Skipping superblock update on recovered sb "
+		jbd_debug(1, "JBD2: Skipping superblock update on recovered sb "
 			"(start %ld, seq %d, errno %d)\n",
 			journal->j_tail, journal->j_tail_sequence,
 			journal->j_errno);
@@ -1163,7 +1163,7 @@ void jbd2_journal_update_superblock(journal_t *journal, int wait)
 	}
 
 	read_lock(&journal->j_state_lock);
-	jbd_debug(1,"JBD: updating superblock (start %ld, seq %d, errno %d)\n",
+	jbd_debug(1, "JBD2: updating superblock (start %ld, seq %d, errno %d)\n",
 		  journal->j_tail, journal->j_tail_sequence, journal->j_errno);
 
 	sb->s_sequence = cpu_to_be32(journal->j_tail_sequence);
@@ -1216,8 +1216,8 @@ static int journal_get_superblock(journal_t *journal)
 		ll_rw_block(READ, 1, &bh);
 		wait_on_buffer(bh);
 		if (!buffer_uptodate(bh)) {
-			printk (KERN_ERR
-				"JBD: IO error reading journal superblock\n");
+			printk(KERN_ERR
+				"JBD2: IO error reading journal superblock\n");
 			goto out;
 		}
 	}
@@ -1228,7 +1228,7 @@ static int journal_get_superblock(journal_t *journal)
 
 	if (sb->s_header.h_magic != cpu_to_be32(JBD2_MAGIC_NUMBER) ||
 	    sb->s_blocksize != cpu_to_be32(journal->j_blocksize)) {
-		printk(KERN_WARNING "JBD: no valid journal superblock found\n");
+		printk(KERN_WARNING "JBD2: no valid journal superblock found\n");
 		goto out;
 	}
 
@@ -1240,14 +1240,14 @@ static int journal_get_superblock(journal_t *journal)
 		journal->j_format_version = 2;
 		break;
 	default:
-		printk(KERN_WARNING "JBD: unrecognised superblock format ID\n");
+		printk(KERN_WARNING "JBD2: unrecognised superblock format ID\n");
 		goto out;
 	}
 
 	if (be32_to_cpu(sb->s_maxlen) < journal->j_maxlen)
 		journal->j_maxlen = be32_to_cpu(sb->s_maxlen);
 	else if (be32_to_cpu(sb->s_maxlen) > journal->j_maxlen) {
-		printk (KERN_WARNING "JBD: journal file too short\n");
+		printk(KERN_WARNING "JBD2: journal file too short\n");
 		goto out;
 	}
 
@@ -1318,8 +1318,8 @@ int jbd2_journal_load(journal_t *journal)
 		     ~cpu_to_be32(JBD2_KNOWN_ROCOMPAT_FEATURES)) ||
 		    (sb->s_feature_incompat &
 		     ~cpu_to_be32(JBD2_KNOWN_INCOMPAT_FEATURES))) {
-			printk (KERN_WARNING
-				"JBD: Unrecognised features on journal\n");
+			printk(KERN_WARNING
+				"JBD2: Unrecognised features on journal\n");
 			return -EINVAL;
 		}
 	}
@@ -1354,7 +1354,7 @@ int jbd2_journal_load(journal_t *journal)
 	return 0;
 
 recovery_error:
-	printk (KERN_WARNING "JBD: recovery failed\n");
+	printk(KERN_WARNING "JBD2: recovery failed\n");
 	return -EIO;
 }
 
@@ -1585,7 +1585,7 @@ static int journal_convert_superblock_v1(journal_t *journal,
 	struct buffer_head *bh;
 
 	printk(KERN_WARNING
-		"JBD: Converting superblock from version 1 to 2.\n");
+		"JBD2: Converting superblock from version 1 to 2.\n");
 
 	/* Pre-initialise new fields to zero */
 	offset = ((char *) &(sb->s_feature_compat)) - ((char *) sb);
@@ -1702,7 +1702,7 @@ int jbd2_journal_wipe(journal_t *journal, int write)
 	if (!journal->j_tail)
 		goto no_recovery;
 
-	printk (KERN_WARNING "JBD: %s recovery information on journal\n",
+	printk(KERN_WARNING "JBD2: %s recovery information on journal\n",
 		write ? "Clearing" : "Ignoring");
 
 	err = jbd2_journal_skip_recovery(journal);
@@ -2028,7 +2028,7 @@ static int journal_init_jbd2_journal_head_cache(void)
 	retval = 0;
 	if (!jbd2_journal_head_cache) {
 		retval = -ENOMEM;
-		printk(KERN_EMERG "JBD: no memory for journal_head cache\n");
+		printk(KERN_EMERG "JBD2: no memory for journal_head cache\n");
 	}
 	return retval;
 }
@@ -2391,7 +2391,7 @@ static void __exit journal_exit(void)
 #ifdef CONFIG_JBD2_DEBUG
 	int n = atomic_read(&nr_journal_heads);
 	if (n)
-		printk(KERN_EMERG "JBD: leaked %d journal_heads!\n", n);
+		printk(KERN_EMERG "JBD2: leaked %d journal_heads!\n", n);
 #endif
 	jbd2_remove_debugfs_entry();
 	jbd2_remove_jbd_stats_proc_entry();

fs/jbd2/recovery.c

@@ -89,7 +89,7 @@ static int do_readahead(journal_t *journal, unsigned int start)
 		err = jbd2_journal_bmap(journal, next, &blocknr);
 
 		if (err) {
-			printk (KERN_ERR "JBD: bad block at offset %u\n",
+			printk(KERN_ERR "JBD2: bad block at offset %u\n",
 				next);
 			goto failed;
 		}
@@ -138,14 +138,14 @@ static int jread(struct buffer_head **bhp, journal_t *journal,
 	*bhp = NULL;
 
 	if (offset >= journal->j_maxlen) {
-		printk(KERN_ERR "JBD: corrupted journal superblock\n");
+		printk(KERN_ERR "JBD2: corrupted journal superblock\n");
 		return -EIO;
 	}
 
 	err = jbd2_journal_bmap(journal, offset, &blocknr);
 
 	if (err) {
-		printk (KERN_ERR "JBD: bad block at offset %u\n",
+		printk(KERN_ERR "JBD2: bad block at offset %u\n",
 			offset);
 		return err;
 	}
@@ -163,7 +163,7 @@ static int jread(struct buffer_head **bhp, journal_t *journal,
 	}
 
 	if (!buffer_uptodate(bh)) {
-		printk (KERN_ERR "JBD: Failed to read block at offset %u\n",
+		printk(KERN_ERR "JBD2: Failed to read block at offset %u\n",
 			offset);
 		brelse(bh);
 		return -EIO;
@@ -251,10 +251,10 @@ int jbd2_journal_recover(journal_t *journal)
 	if (!err)
 		err = do_one_pass(journal, &info, PASS_REPLAY);
 
-	jbd_debug(1, "JBD: recovery, exit status %d, "
+	jbd_debug(1, "JBD2: recovery, exit status %d, "
 		  "recovered transactions %u to %u\n",
 		  err, info.start_transaction, info.end_transaction);
-	jbd_debug(1, "JBD: Replayed %d and revoked %d/%d blocks\n",
+	jbd_debug(1, "JBD2: Replayed %d and revoked %d/%d blocks\n",
 		  info.nr_replays, info.nr_revoke_hits, info.nr_revokes);
 
 	/* Restart the log at the next transaction ID, thus invalidating
@@ -293,14 +293,14 @@ int jbd2_journal_skip_recovery(journal_t *journal)
 	err = do_one_pass(journal, &info, PASS_SCAN);
 
 	if (err) {
-		printk(KERN_ERR "JBD: error %d scanning journal\n", err);
+		printk(KERN_ERR "JBD2: error %d scanning journal\n", err);
 		++journal->j_transaction_sequence;
 	} else {
 #ifdef CONFIG_JBD2_DEBUG
 		int dropped = info.end_transaction - 
 			be32_to_cpu(journal->j_superblock->s_sequence);
 		jbd_debug(1,
-			  "JBD: ignoring %d transaction%s from the journal.\n",
+			  "JBD2: ignoring %d transaction%s from the journal.\n",
 			  dropped, (dropped == 1) ? "" : "s");
 #endif
 		journal->j_transaction_sequence = ++info.end_transaction;
@@ -338,7 +338,7 @@ static int calc_chksums(journal_t *journal, struct buffer_head *bh,
 		wrap(journal, *next_log_block);
 		err = jread(&obh, journal, io_block);
 		if (err) {
-			printk(KERN_ERR "JBD: IO error %d recovering block "
+			printk(KERN_ERR "JBD2: IO error %d recovering block "
 				"%lu in log\n", err, io_block);
 			return 1;
 		} else {
@@ -411,7 +411,7 @@ static int do_one_pass(journal_t *journal,
 		 * either the next descriptor block or the final commit
 		 * record. */
 
-		jbd_debug(3, "JBD: checking block %ld\n", next_log_block);
+		jbd_debug(3, "JBD2: checking block %ld\n", next_log_block);
 		err = jread(&bh, journal, next_log_block);
 		if (err)
 			goto failed;
@@ -491,8 +491,8 @@ static int do_one_pass(journal_t *journal,
 					/* Recover what we can, but
 					 * report failure at the end. */
 					success = err;
-					printk (KERN_ERR
-						"JBD: IO error %d recovering "
+					printk(KERN_ERR
+						"JBD2: IO error %d recovering "
 						"block %ld in log\n",
 						err, io_block);
 				} else {
@@ -520,7 +520,7 @@ static int do_one_pass(journal_t *journal,
 							journal->j_blocksize);
 					if (nbh == NULL) {
 						printk(KERN_ERR
-						       "JBD: Out of memory "
+						       "JBD2: Out of memory "
 						       "during recovery.\n");
 						err = -ENOMEM;
 						brelse(bh);
@@ -689,7 +689,7 @@ static int do_one_pass(journal_t *journal,
 		/* It's really bad news if different passes end up at
 		 * different places (but possible due to IO errors). */
 		if (info->end_transaction != next_commit_ID) {
-			printk (KERN_ERR "JBD: recovery pass %d ended at "
+			printk(KERN_ERR "JBD2: recovery pass %d ended at "
 				"transaction %u, expected %u\n",
 				pass, next_commit_ID, info->end_transaction);
 			if (!success)

fs/jbd2/transaction.c

@@ -125,7 +125,7 @@ static int start_this_handle(journal_t *journal, handle_t *handle,
 	unsigned long ts = jiffies;
 
 	if (nblocks > journal->j_max_transaction_buffers) {
-		printk(KERN_ERR "JBD: %s wants too many credits (%d > %d)\n",
+		printk(KERN_ERR "JBD2: %s wants too many credits (%d > %d)\n",
 		       current->comm, nblocks,
 		       journal->j_max_transaction_buffers);
 		return -ENOSPC;
@@ -564,7 +564,7 @@ static void warn_dirty_buffer(struct buffer_head *bh)
 	char b[BDEVNAME_SIZE];
 
 	printk(KERN_WARNING
-	       "JBD: Spotted dirty metadata buffer (dev = %s, blocknr = %llu). "
+	       "JBD2: Spotted dirty metadata buffer (dev = %s, blocknr = %llu). "
 	       "There's a risk of filesystem corruption in case of system "
 	       "crash.\n",
 	       bdevname(bh->b_bdev, b), (unsigned long long)bh->b_blocknr);