Rename arena_maxclass to large_maxclass.

arena_maxclass is no longer an appropriate name, because arenas also
manage huge allocations.

include/jemalloc/internal/arena.h

@@ -424,7 +424,7 @@ extern arena_bin_info_t	arena_bin_info[NBINS];
 extern size_t		map_bias; /* Number of arena chunk header pages. */
 extern size_t		map_misc_offset;
 extern size_t		arena_maxrun; /* Max run size for arenas. */
-extern size_t		arena_maxclass; /* Max size class for arenas. */
+extern size_t		large_maxclass; /* Max large size class. */
 extern unsigned		nlclasses; /* Number of large size classes. */
 extern unsigned		nhclasses; /* Number of huge size classes. */
 
@@ -1143,7 +1143,7 @@ arena_malloc(tsd_t *tsd, arena_t *arena, size_t size, bool zero,
 			    zero));
 		} else
 			return (arena_malloc_small(arena, size, zero));
-	} else if (likely(size <= arena_maxclass)) {
+	} else if (likely(size <= large_maxclass)) {
 		/*
 		 * Initialize tcache after checking size in order to avoid
 		 * infinite recursion during tcache initialization.

include/jemalloc/internal/jemalloc_internal.h.in

@@ -705,7 +705,7 @@ sa2u(size_t size, size_t alignment)
 	}
 
 	/* Try for a large size class. */
-	if (likely(size <= arena_maxclass) && likely(alignment < chunksize)) {
+	if (likely(size <= large_maxclass) && likely(alignment < chunksize)) {
 		/*
 		 * We can't achieve subpage alignment, so round up alignment
 		 * to the minimum that can actually be supported.

include/jemalloc/internal/private_symbols.txt

@@ -58,7 +58,6 @@ arena_mapbits_unallocated_set
 arena_mapbits_unallocated_size_get
 arena_mapbits_unallocated_size_set
 arena_mapbits_unzeroed_get
-arena_maxclass
 arena_maxrun
 arena_maybe_purge
 arena_metadata_allocated_add
@@ -285,6 +284,7 @@ ixalloc
 jemalloc_postfork_child
 jemalloc_postfork_parent
 jemalloc_prefork
+large_maxclass
 lg_floor
 malloc_cprintf
 malloc_mutex_init