diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 9d5360c..44ebcdf 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -908,6 +908,7 @@ long wb_do_writeback(struct bdi_writeback *wb, int force_wait)
 		if (args.sync_mode == WB_SYNC_NONE)
 			wb_clear_pending(wb, work);
 
+		printk(KERN_DEBUG "qqq: wb work for %s\n", bdi->name);
 		wrote += wb_writeback(wb, &args);
 
 		/*
@@ -921,6 +922,7 @@ long wb_do_writeback(struct bdi_writeback *wb, int force_wait)
 	/*
 	 * Check for periodic writeback, kupdated() style
 	 */
+	printk(KERN_DEBUG "qqq: kupdated for %s\n", bdi->name);
 	wrote += wb_check_old_data_flush(wb);
 
 	return wrote;
diff --git a/fs/ubifs/journal.c b/fs/ubifs/journal.c
index 914f1bd..6b0e41c 100644
--- a/fs/ubifs/journal.c
+++ b/fs/ubifs/journal.c
@@ -124,6 +124,7 @@ static int reserve_space(struct ubifs_info *c, int jhead, int len)
 	 */
 	ubifs_assert(!c->ro_media && !c->ro_mount);
 	squeeze = (jhead == BASEHD);
+
 again:
 	mutex_lock_nested(&wbuf->io_mutex, wbuf->jhead);
 
@@ -779,6 +780,11 @@ int ubifs_jnl_write_inode(struct ubifs_info *c, const struct inode *inode)
 	if (!ino)
 		return -ENOMEM;
 
+	if (!c->jheads) {
+		/* We are about to oops, so here we can print useful info */
+		printk(KERN_DEBUG "qqq: writing inode %lu\n", inode->i_ino);
+	}
+
 	/* Make reservation before allocating sequence numbers */
 	err = make_reservation(c, BASEHD, len);
 	if (err)
diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c
index 52f5627..752f4e4 100644
--- a/fs/ubifs/super.c
+++ b/fs/ubifs/super.c
@@ -1533,6 +1533,9 @@ static int ubifs_remount_rw(struct ubifs_info *c)
 		return -EROFS;
 	}
 
+	printk(KERN_DEBUG "qqq: %s\n", __func__);
+	dump_stack();
+
 	mutex_lock(&c->umount_mutex);
 	dbg_save_space_info(c);
 	c->remounting_rw = 1;
@@ -1678,6 +1681,8 @@ static void ubifs_remount_ro(struct ubifs_info *c)
 
 	ubifs_assert(!c->need_recovery);
 	ubifs_assert(!c->ro_mount);
+	printk(KERN_DEBUG "qqq: %s\n", __func__);
+	dump_stack();
 
 	mutex_lock(&c->umount_mutex);
 	if (c->bgt) {