UBIFS: print debugging messages properly

We cannot use ubifs_err() macro with DBGKEY() and DBGKEY1(),
because this is racy and holding dbg_lock is needed. Use
dbg_err() instead, which does have the lock held.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

fs/ubifs/debug.c

@@ -1010,20 +1010,20 @@ static int dbg_check_key_order(struct ubifs_info *c, struct ubifs_zbranch *zbr1,
 	err = 1;
 	key_read(c, &dent1->key, &key);
 	if (keys_cmp(c, &zbr1->key, &key)) {
-		ubifs_err("1st entry at %d:%d has key %s", zbr1->lnum,
-			  zbr1->offs, DBGKEY(&key));
-		ubifs_err("but it should have key %s according to tnc",
-			  DBGKEY(&zbr1->key));
+		dbg_err("1st entry at %d:%d has key %s", zbr1->lnum,
+			zbr1->offs, DBGKEY(&key));
+		dbg_err("but it should have key %s according to tnc",
+			DBGKEY(&zbr1->key));
 		dbg_dump_node(c, dent1);
 		goto out_free;
 	}
 
 	key_read(c, &dent2->key, &key);
 	if (keys_cmp(c, &zbr2->key, &key)) {
-		ubifs_err("2nd entry at %d:%d has key %s", zbr1->lnum,
-			  zbr1->offs, DBGKEY(&key));
-		ubifs_err("but it should have key %s according to tnc",
-			  DBGKEY(&zbr2->key));
+		dbg_err("2nd entry at %d:%d has key %s", zbr1->lnum,
+			zbr1->offs, DBGKEY(&key));
+		dbg_err("but it should have key %s according to tnc",
+			DBGKEY(&zbr2->key));
 		dbg_dump_node(c, dent2);
 		goto out_free;
 	}
@@ -1037,9 +1037,9 @@ static int dbg_check_key_order(struct ubifs_info *c, struct ubifs_zbranch *zbr1,
 		goto out_free;
 	}
 	if (cmp == 0 && nlen1 == nlen2)
-		ubifs_err("2 xent/dent nodes with the same name");
+		dbg_err("2 xent/dent nodes with the same name");
 	else
-		ubifs_err("bad order of colliding key %s",
+		dbg_err("bad order of colliding key %s",
 			DBGKEY(&key));
 
 	ubifs_msg("first node at %d:%d\n", zbr1->lnum, zbr1->offs);