Read superblock sections from cache volume during activate

Because of metadata flapping it is much more complicated to capture those
sections in flight in standby mode, so we read them directly from the cache
volume during the activate.

Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>

src/concurrency/ocf_pio_concurrency.c

@@ -18,7 +18,7 @@ struct pio_ctx {
 		uint64_t first_entry;
 		uint64_t begin;
 		uint64_t end;
-	} segments[5];
+	} segments[2];
 };
 
 #define OUT_OF_RANGE -1
@@ -181,9 +181,6 @@ int ocf_pio_concurrency_init(struct ocf_alock **self, ocf_cache_t cache)
 	uint32_t pages_to_alloc = 0;
 	enum ocf_metadata_segment_id update_segments[] = {
 		metadata_segment_sb_config,
-		metadata_segment_part_config,
-		metadata_segment_core_config,
-		metadata_segment_core_uuid,
 		metadata_segment_collision,
 	};
 	int i;