refactor(esp_partition): Expose function for unloading partitions

Closes https://github.com/espressif/esp-idf/issues/12625

components/esp_partition/include/esp_partition.h

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2015-2023 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -454,6 +454,11 @@ esp_err_t esp_partition_register_external(esp_flash_t* flash_chip, size_t offset
  */
 esp_err_t esp_partition_deregister_external(const esp_partition_t* partition);
 
+/**
+ * @brief Unload partitions and free space allocated by them
+ */
+void esp_partition_unload_all(void);
+
 #ifdef __cplusplus
 }
 #endif

components/esp_partition/include/esp_private/partition_linux.h

@@ -236,10 +236,6 @@ esp_partition_file_mmap_ctrl_t* esp_partition_get_file_mmap_ctrl_input(void);
 */
 esp_partition_file_mmap_ctrl_t* esp_partition_get_file_mmap_ctrl_act(void);
 
-// private function in partition.c to unload partitions and free space allocated by them
-void unload_partitions(void);
-
-
 #ifdef __cplusplus
 }
 #endif

components/esp_partition/partition.c

@@ -233,7 +233,7 @@ static esp_err_t load_partitions(void)
     return err;
 }
 
-void unload_partitions(void)
+void esp_partition_unload_all(void)
 {
     _lock_acquire(&s_partition_list_lock);
     partition_list_item_t *it;

components/esp_partition/partition_linux.c

@@ -329,7 +329,7 @@ esp_err_t esp_partition_file_munmap(void)
         return ESP_ERR_NOT_FOUND;
     }
 
-    unload_partitions();
+    esp_partition_unload_all();
 
 #ifdef CONFIG_ESP_PARTITION_ENABLE_STATS
     free(s_esp_partition_stat_sector_erase_count);