PA: Move edata_avail stat in, make it non-atomic.

include/jemalloc/internal/arena_stats.h

@@ -52,9 +52,6 @@ struct arena_stats_s {
 	 */
 	locked_zu_t		retained; /* Derived. */
 
-	/* Number of edata_t structs allocated by base, but not being used. */
-	atomic_zu_t		edata_avail; /* Derived. */
-
 	atomic_zu_t		base; /* Derived. */
 	atomic_zu_t		internal;
 	atomic_zu_t		resident; /* Derived. */

include/jemalloc/internal/pa.h

@@ -69,6 +69,9 @@ struct pa_shard_stats_s {
 	 */
 	locked_zu_t mapped;
 
+	/* Number of edata_t structs allocated by base, but not being used. */
+	size_t edata_avail; /* Derived. */
+
 	/* VM space had to be leaked (undocumented).  Normally 0. */
 	atomic_zu_t abandoned_vm;
 };