befs: make consistent use of befs_error()

befs_error() is used in potential errors that could happen in befs to
provide informational log messages. befs_debug() is silent when
CONFIG_BEFS_DEBUG=no, and very verbose when switched on, which is why it is
used for general debugging but not for errors.

Fix a few cases where the befs debug utility usage isn't following the
expected pattern. To make sure we have consistent information in the logs.

Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>

fs/befs/btree.c

@@ -301,7 +301,8 @@ befs_btree_find(struct super_block *sb, const befs_data_stream *ds,
 	kfree(this_node);
 
 	if (res != BEFS_BT_MATCH) {
-		befs_debug(sb, "<--- %s Key %s not found", __func__, key);
+		befs_error(sb, "<--- %s Key %s not found", __func__, key);
+		befs_debug(sb, "<--- %s ERROR", __func__);
 		*value = 0;
 		return BEFS_BT_NOT_FOUND;
 	}
@@ -358,7 +359,8 @@ befs_find_key(struct super_block *sb, struct befs_btree_node *node,
 
 	eq = befs_compare_strings(thiskey, keylen, findkey, findkey_len);
 	if (eq < 0) {
-		befs_debug(sb, "<--- %s %s not found", __func__, findkey);
+		befs_error(sb, "<--- %s %s not found", __func__, findkey);
+		befs_debug(sb, "<--- %s ERROR", __func__);
 		return BEFS_BT_NOT_FOUND;
 	}
 

fs/befs/datastream.c

@@ -275,6 +275,8 @@ befs_find_brun_direct(struct super_block *sb, const befs_data_stream *data,
 		}
 	}
 
+	befs_error(sb, "%s failed to find file block %lu", __func__,
+		   (unsigned long)blockno);
 	befs_debug(sb, "---> %s ERROR", __func__);
 	return BEFS_ERR;
 }
@@ -328,9 +330,10 @@ befs_find_brun_indirect(struct super_block *sb,
 	for (i = 0; i < indirect.len; i++) {
 		indirblock = sb_bread(sb, indirblockno + i);
 		if (indirblock == NULL) {
-			befs_debug(sb, "---> %s failed to read "
+			befs_error(sb, "---> %s failed to read "
 				   "disk block %lu from the indirect brun",
 				   __func__, (unsigned long)indirblockno + i);
+			befs_debug(sb, "<--- %s ERROR", __func__);
 			return BEFS_ERR;
 		}
 

fs/befs/linuxvfs.c

@@ -187,7 +187,7 @@ befs_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags)
 		return ERR_PTR(-ENOENT);
 
 	} else if (ret != BEFS_OK || offset == 0) {
-		befs_warning(sb, "<--- %s Error", __func__);
+		befs_error(sb, "<--- %s Error", __func__);
 		return ERR_PTR(-ENODATA);
 	}