diff --git a/src/LITTLEFS.cpp b/src/LITTLEFS.cpp
index d14f1ee..6b4ab0b 100644
--- a/src/LITTLEFS.cpp
+++ b/src/LITTLEFS.cpp
@@ -41,7 +41,11 @@ LITTLEFSImpl::LITTLEFSImpl()
 
 bool LITTLEFSImpl::exists(const char* path)
 {
+#if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(4, 3, 0)
+    File f = open(path, "r", false);
+#else
     File f = open(path, "r");
+#endif
     return (f == true);
 }
 
diff --git a/src/esp_littlefs.c b/src/esp_littlefs.c
index 2b0c2e4..9bdff1e 100644
--- a/src/esp_littlefs.c
+++ b/src/esp_littlefs.c
@@ -182,11 +182,18 @@ esp_err_t esp_littlefs_info(const char* partition_label, size_t *total_bytes, si
     esp_littlefs_t *efs = NULL;
 
     err = esp_littlefs_by_label(partition_label, &index);
-    if(err != ESP_OK) return false;
+    if(err != ESP_OK) return err;
     efs = _efs[index];
 
-    if(total_bytes) *total_bytes = efs->cfg.block_size * efs->cfg.block_count; 
-    if(used_bytes) *used_bytes = efs->cfg.block_size * lfs_fs_size(efs->fs);
+    sem_take(efs);
+    size_t total_bytes_local = efs->cfg.block_size * efs->cfg.block_count;
+    if(total_bytes) *total_bytes = total_bytes_local;
+
+    /* lfs_fs_size may return a size larger than the actual filesystem size.
+     * https://github.com/littlefs-project/littlefs/blob/9c7e232086f865cff0bb96fe753deb66431d91fd/lfs.h#L658
+     */
+    if(used_bytes) *used_bytes = MIN(total_bytes_local, efs->cfg.block_size * lfs_fs_size(efs->fs));
+    sem_give(efs);
 
     return ESP_OK;
 }