diff --git a/jemalloc/ChangeLog b/jemalloc/ChangeLog
index d042982d..08526c80 100644
--- a/jemalloc/ChangeLog
+++ b/jemalloc/ChangeLog
@@ -6,6 +6,14 @@ found in the git revision history:
     http://www.canonware.com/cgi-bin/gitweb.cgi?p=jemalloc.git
     git://canonware.com/jemalloc.git
 
+* 2.1.3 (March 14, 2011)
+
+  Bug fixes:
+  - Fix a cpp logic regression (due to the "thread.{de,}allocatedp" mallctl fix
+    for OS X in 2.1.2).
+  - Fix a "thread.arena" mallctl bug.
+  - Fix a thread cache stats merging bug.
+
 * 2.1.2 (March 2, 2011)
 
   Bug fixes:
diff --git a/jemalloc/include/jemalloc/internal/jemalloc_internal.h.in b/jemalloc/include/jemalloc/internal/jemalloc_internal.h.in
index a27416ce..aab2bfb2 100644
--- a/jemalloc/include/jemalloc/internal/jemalloc_internal.h.in
+++ b/jemalloc/include/jemalloc/internal/jemalloc_internal.h.in
@@ -369,7 +369,7 @@ size_t	s2u(size_t size);
 size_t	sa2u(size_t size, size_t alignment, size_t *run_size_p);
 void	malloc_write(const char *s);
 arena_t	*choose_arena(void);
-#  ifdef NO_TLS
+#  if (defined(JEMALLOC_STATS) && defined(NO_TLS))
 thread_allocated_t	*thread_allocated_get(void);
 #  endif
 #endif
@@ -533,7 +533,7 @@ choose_arena(void)
 	return (ret);
 }
 
-#ifdef NO_TLS
+#if (defined(JEMALLOC_STATS) && defined(NO_TLS))
 JEMALLOC_INLINE thread_allocated_t *
 thread_allocated_get(void)
 {
diff --git a/jemalloc/src/ctl.c b/jemalloc/src/ctl.c
index c37b4e75..1b28da47 100644
--- a/jemalloc/src/ctl.c
+++ b/jemalloc/src/ctl.c
@@ -1114,8 +1114,8 @@ thread_arena_ctl(const size_t *mib, size_t miblen, void *oldp, size_t *oldlenp,
 	unsigned newind, oldind;
 
 	newind = oldind = choose_arena()->ind;
-	WRITE(oldind, unsigned);
-	READ(newind, unsigned);
+	WRITE(newind, unsigned);
+	READ(oldind, unsigned);
 	if (newind != oldind) {
 		arena_t *arena;
 
diff --git a/jemalloc/src/tcache.c b/jemalloc/src/tcache.c
index cbbe7a11..e9b067d4 100644
--- a/jemalloc/src/tcache.c
+++ b/jemalloc/src/tcache.c
@@ -58,6 +58,9 @@ tcache_bin_flush_small(tcache_bin_t *tbin, size_t binind, unsigned rem
 	void *flush, *deferred, *ptr;
 	unsigned i, nflush, ndeferred;
 	bool first_pass;
+#ifdef JEMALLOC_STATS
+	bool merged_stats = false;
+#endif
 
 	assert(binind < nbins);
 	assert(rem <= tbin->ncached);
@@ -82,6 +85,8 @@ tcache_bin_flush_small(tcache_bin_t *tbin, size_t binind, unsigned rem
 		malloc_mutex_lock(&bin->lock);
 #ifdef JEMALLOC_STATS
 		if (arena == tcache->arena) {
+			assert(merged_stats == false);
+			merged_stats = true;
 			bin->stats.nflushes++;
 			bin->stats.nrequests += tbin->tstats.nrequests;
 			tbin->tstats.nrequests = 0;
@@ -119,6 +124,20 @@ tcache_bin_flush_small(tcache_bin_t *tbin, size_t binind, unsigned rem
 			first_pass = false;
 		}
 	}
+#ifdef JEMALLOC_STATS
+	if (merged_stats == false) {
+		/*
+		 * The flush loop didn't happen to flush to this thread's
+		 * arena, so the stats didn't get merged.  Manually do so now.
+		 */
+		arena_bin_t *bin = &tcache->arena->bins[binind];
+		malloc_mutex_lock(&bin->lock);
+		bin->stats.nflushes++;
+		bin->stats.nrequests += tbin->tstats.nrequests;
+		tbin->tstats.nrequests = 0;
+		malloc_mutex_unlock(&bin->lock);
+	}
+#endif
 
 	tbin->ncached = rem;
 	if (tbin->ncached < tbin->low_water)
diff --git a/jemalloc/test/thread_arena.c b/jemalloc/test/thread_arena.c
index bd884e1f..ef8d6817 100644
--- a/jemalloc/test/thread_arena.c
+++ b/jemalloc/test/thread_arena.c
@@ -2,10 +2,13 @@
 #include <stdlib.h>
 #include <pthread.h>
 #include <string.h>
+#include <assert.h>
 
 #define	JEMALLOC_MANGLE
 #include "jemalloc_test.h"
 
+#define NTHREADS 10
+
 void *
 thread_start(void *arg)
 {
@@ -29,6 +32,15 @@ thread_start(void *arg)
 		return (void *)1;
 	}
 
+	size = sizeof(arena_ind);
+	if ((err = JEMALLOC_P(mallctl)("thread.arena", &arena_ind, &size, NULL,
+	    0))) {
+		fprintf(stderr, "%s(): Error in mallctl(): %s\n", __func__,
+		    strerror(err));
+		return (void *)1;
+	}
+	assert(arena_ind == main_arena_ind);
+
 	return (NULL);
 }
 
@@ -40,7 +52,8 @@ main(void)
 	unsigned arena_ind;
 	size_t size;
 	int err;
-	pthread_t thread;
+	pthread_t threads[NTHREADS];
+	unsigned i;
 
 	fprintf(stderr, "Test begin\n");
 
@@ -60,21 +73,18 @@ main(void)
 		goto RETURN;
 	}
 
-	if (pthread_create(&thread, NULL, thread_start, (void *)&arena_ind)
-	    != 0) {
-		fprintf(stderr, "%s(): Error in pthread_create()\n", __func__);
-		ret = 1;
-		goto RETURN;
+	for (i = 0; i < NTHREADS; i++) {
+		if (pthread_create(&threads[i], NULL, thread_start,
+		    (void *)&arena_ind) != 0) {
+			fprintf(stderr, "%s(): Error in pthread_create()\n",
+			    __func__);
+			ret = 1;
+			goto RETURN;
+		}
 	}
-	pthread_join(thread, (void *)&ret);
 
-	if (pthread_create(&thread, NULL, thread_start, (void *)&arena_ind)
-	    != 0) {
-		fprintf(stderr, "%s(): Error in pthread_create()\n", __func__);
-		ret = 1;
-		goto RETURN;
-	}
-	pthread_join(thread, (void *)&ret);
+	for (i = 0; i < NTHREADS; i++)
+		pthread_join(threads[i], (void *)&ret);
 
 RETURN:
 	fprintf(stderr, "Test end\n");