From 85e8b414c4b5b84cc98b84afc6512c29b0df8190 Mon Sep 17 00:00:00 2001
From: Robert Baldyga <robert.baldyga@intel.com>
Date: Tue, 31 Aug 2021 18:56:08 +0200
Subject: [PATCH] Add ocf_metadata_load_unsafe()

Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
---
 src/metadata/metadata.c | 73 +++++++++++++++++++++++++++++++++++++++++
 src/metadata/metadata.h | 10 ++++++
 2 files changed, 83 insertions(+)

diff --git a/src/metadata/metadata.c b/src/metadata/metadata.c
index 0afae41..6d8207d 100644
--- a/src/metadata/metadata.c
+++ b/src/metadata/metadata.c
@@ -1146,6 +1146,79 @@ void ocf_metadata_load_all(ocf_cache_t cache,
 	ocf_pipeline_next(pipeline);
 }
 
+static void ocf_metadata_load_unsafe_finish(ocf_pipeline_t pipeline,
+		void *priv, int error)
+{
+	struct ocf_metadata_context *context = priv;
+	ocf_cache_t cache = context->cache;
+
+	if (error) {
+		ocf_cache_log(cache, log_err, "Metadata read FAILURE\n");
+		ocf_metadata_error(cache);
+		goto out;
+	}
+
+	ocf_cache_log(cache, log_info, "Done loading cache state\n");
+
+out:
+	context->cmpl(context->priv, error);
+	ocf_pipeline_destroy(pipeline);
+}
+
+struct ocf_pipeline_arg ocf_metadata_load_unsafe_args[] = {
+	OCF_PL_ARG_INT(metadata_segment_sb_config),
+	OCF_PL_ARG_INT(metadata_segment_sb_runtime),
+	OCF_PL_ARG_INT(metadata_segment_part_config),
+	OCF_PL_ARG_INT(metadata_segment_part_runtime),
+	OCF_PL_ARG_INT(metadata_segment_core_config),
+	OCF_PL_ARG_INT(metadata_segment_core_runtime),
+	OCF_PL_ARG_INT(metadata_segment_core_uuid),
+	OCF_PL_ARG_INT(metadata_segment_cleaning),
+	OCF_PL_ARG_INT(metadata_segment_lru),
+	OCF_PL_ARG_INT(metadata_segment_collision),
+	OCF_PL_ARG_INT(metadata_segment_list_info),
+	OCF_PL_ARG_INT(metadata_segment_hash),
+	OCF_PL_ARG_TERMINATOR(),
+};
+
+struct ocf_pipeline_properties ocf_metadata_load_unsafe_pipeline_props = {
+	.priv_size = sizeof(struct ocf_metadata_context),
+	.finish = ocf_metadata_load_unsafe_finish,
+	.steps = {
+		OCF_PL_STEP_FOREACH(ocf_metadata_load_segment,
+				ocf_metadata_load_unsafe_args),
+		OCF_PL_STEP_TERMINATOR(),
+	},
+};
+
+/*
+ * Load metadata unsafe
+ */
+void ocf_metadata_load_unsafe(ocf_cache_t cache,
+		ocf_metadata_end_t cmpl, void *priv)
+{
+	struct ocf_metadata_context *context;
+	ocf_pipeline_t pipeline;
+	int result;
+
+	OCF_DEBUG_TRACE(cache);
+
+	result = ocf_pipeline_create(&pipeline, cache,
+			&ocf_metadata_load_unsafe_pipeline_props);
+	if (result)
+		OCF_CMPL_RET(priv, result);
+
+	context = ocf_pipeline_get_priv(pipeline);
+
+	context->cmpl = cmpl;
+	context->priv = priv;
+	context->pipeline = pipeline;
+	context->cache = cache;
+	context->ctrl = cache->metadata.priv;
+
+	ocf_pipeline_next(pipeline);
+}
+
 static void ocf_metadata_load_recovery_legacy_finish(
 		ocf_pipeline_t pipeline, void *priv, int error)
 {
diff --git a/src/metadata/metadata.h b/src/metadata/metadata.h
index a084bb9..8a7e59b 100644
--- a/src/metadata/metadata.h
+++ b/src/metadata/metadata.h
@@ -164,6 +164,16 @@ void ocf_metadata_flush_do_asynch(struct ocf_cache *cache,
 void ocf_metadata_load_all(ocf_cache_t cache,
 		ocf_metadata_end_t cmpl, void *priv);
 
+/**
+ * @brief Load metadata unsafe
+ *
+ * @param cache - Cache instance
+ * @param cmpl - Completion callback
+ * @param priv - Completion context
+ */
+void ocf_metadata_load_unsafe(ocf_cache_t cache,
+		ocf_metadata_end_t cmpl, void *priv);
+
 /**
  * @brief Load metadata required for recovery procedure
  *