Optional repartitioning when reconfiguring IO classes

With `all` parameter set repartition data from all IO classes.
If `all` is unset repartition only from deleted IO classes.

Signed-off-by: Daniel Madej <daniel.madej@huawei.com>

Author: Deixx

inc/ocf_mngt.h

@@ -1025,16 +1025,17 @@ int ocf_mngt_cache_io_classes_configure(ocf_cache_t cache,
 		const struct ocf_mngt_io_classes_config *cfg);
 
 /**
- * @brief Repartition lines from all IO classes to default
+ * @brief Repartition lines to default IO class
  *
  * @param[in] cache Handle for cache
  * @param[in] cfg IO class configuration
+ * @param[in] all Repartition from all IO classes (including reconfigured)
  *
  * @retval 0 Repartitioning successful
  * @retval Non-zero Error occurred
  */
-int ocf_repart_all_to_default(ocf_cache_t cache,
-	const struct ocf_mngt_io_classes_config *cfg);
+int ocf_repart_to_default(ocf_cache_t cache,
+	const struct ocf_mngt_io_classes_config *cfg, bool all);
 
 /**
  * @brief Asociate new UUID value with given core

src/mngt/ocf_mngt_io_class.c

@@ -330,8 +330,8 @@ int ocf_mngt_cache_io_classes_configure(ocf_cache_t cache,
 	return result;
 }
 
-int ocf_repart_all_to_default(ocf_cache_t cache,
-	const struct ocf_mngt_io_classes_config *cfg)
+int ocf_repart_to_default(ocf_cache_t cache,
+	const struct ocf_mngt_io_classes_config *cfg, bool all)
 {
 	int i;
 
@@ -342,9 +342,11 @@ int ocf_repart_all_to_default(ocf_cache_t cache,
 		_ocf_mngt_set_partition_size(cache, i, 0, 0);
 
 	for (i = 1; i < OCF_USER_IO_CLASS_MAX; i++) {
-		ocf_lru_repart_all(cache,
-			&cache->user_parts[i].part,
-			&cache->user_parts[0].part);
+		if (all || !cfg->config[i].name) {
+			ocf_lru_repart_all(cache,
+				&cache->user_parts[i].part,
+				&cache->user_parts[0].part);
+		}
 	}
 
 	/* Reenable IO classes */