Extents -> Eset: rename/move extents_init.

include/jemalloc/internal/eset.h

@@ -6,6 +6,9 @@
 #include "jemalloc/internal/extent.h"
 #include "jemalloc/internal/mutex.h"
 
+/* This is a transitional declarion, while we move extent.c into eset.c. */
+extern const bitmap_info_t eset_bitmap_info;
+
 /*
  * An eset ("extent set") is a quantized collection of extents, with built-in
  * LRU queue.
@@ -57,4 +60,7 @@ struct eset_s {
 	bool delay_coalesce;
 };
 
+bool eset_init(tsdn_t *tsdn, eset_t *eset, extent_state_t state,
+    bool delay_coalesce);
+
 #endif /* JEMALLOC_INTERNAL_ESET_H */

include/jemalloc/internal/extent_externs.h

@@ -27,8 +27,6 @@ size_t extent_size_quantize_ceil(size_t size);
 ph_proto(, extent_avail_, extent_tree_t, extent_t)
 ph_proto(, extent_heap_, extent_heap_t, extent_t)
 
-bool extents_init(tsdn_t *tsdn, eset_t *eset, extent_state_t state,
-    bool delay_coalesce);
 extent_state_t extents_state_get(const eset_t *eset);
 size_t extents_npages_get(eset_t *eset);
 /* Get the number of extents in the given page size index. */