3 files changed, 15 insertions, 13 deletions
diff --git a/libc/stdlib/malloc/free.c b/libc/stdlib/malloc/free.c
index 298707cc4..5dd3a7625 100644
--- a/libc/stdlib/malloc/free.c
+++ b/libc/stdlib/malloc/free.c
@@ -30,7 +30,7 @@
 static void
 __free_to_heap (void *mem, struct heap_free_area **heap
 #ifdef HEAP_USE_LOCKING
-		, pthread_mutex_t *heap_lock
+		, malloc_mutex_t *heap_lock
 #endif
 	       )
 {
diff --git a/libc/stdlib/malloc/malloc.c b/libc/stdlib/malloc/malloc.c
index 973f9d569..19877db89 100644
--- a/libc/stdlib/malloc/malloc.c
+++ b/libc/stdlib/malloc/malloc.c
@@ -28,12 +28,12 @@
 HEAP_DECLARE_STATIC_FREE_AREA (initial_fa, 256);
 struct heap_free_area *__malloc_heap = HEAP_INIT_WITH_FA (initial_fa);
 #ifdef HEAP_USE_LOCKING
-pthread_mutex_t __malloc_heap_lock = PTHREAD_MUTEX_INITIALIZER;
+malloc_mutex_t __malloc_heap_lock = PTHREAD_MUTEX_INITIALIZER;
 #endif
 
 #if defined(MALLOC_USE_LOCKING) && defined(MALLOC_USE_SBRK)
 /* A lock protecting our use of sbrk.  */
-pthread_mutex_t __malloc_sbrk_lock;
+malloc_mutex_t __malloc_sbrk_lock;
 #endif /* MALLOC_USE_LOCKING && MALLOC_USE_SBRK */
 
 
@@ -48,7 +48,7 @@ struct malloc_mmb *__malloc_mmapped_blocks = 0;
 HEAP_DECLARE_STATIC_FREE_AREA (initial_mmb_fa, 48); /* enough for 3 mmbs */
 struct heap_free_area *__malloc_mmb_heap = HEAP_INIT_WITH_FA (initial_mmb_fa);
 #ifdef HEAP_USE_LOCKING
-pthread_mutex_t __malloc_mmb_heap_lock = PTHREAD_MUTEX_INITIALIZER;
+malloc_mutex_t __malloc_mmb_heap_lock = PTHREAD_MUTEX_INITIALIZER;
 #endif
 #endif /* __UCLIBC_UCLINUX_BROKEN_MUNMAP__ */
 
@@ -61,7 +61,7 @@ pthread_mutex_t __malloc_mmb_heap_lock = PTHREAD_MUTEX_INITIALIZER;
 static void *
 __malloc_from_heap (size_t size, struct heap_free_area **heap
 #ifdef HEAP_USE_LOCKING
-		, pthread_mutex_t *heap_lock
+		, malloc_mutex_t *heap_lock
 #endif
 		)
 {
diff --git a/libc/stdlib/malloc/malloc.h b/libc/stdlib/malloc/malloc.h
index 609b89748..2afc3a805 100644
--- a/libc/stdlib/malloc/malloc.h
+++ b/libc/stdlib/malloc/malloc.h
@@ -130,21 +130,24 @@ extern int __malloc_mmb_debug;
 
 
 /* Locking for multithreaded apps.  */
-#if defined __UCLIBC_HAS_THREADS__ && defined __LINUXTHREADS_OLD__
+#ifdef __UCLIBC_HAS_THREADS__
 
 # include <pthread.h>
 # include <bits/uClibc_pthread.h>
 
 # define MALLOC_USE_LOCKING
 
+typedef pthread_mutex_t malloc_mutex_t;
+# define MALLOC_MUTEX_INIT	PTHREAD_MUTEX_INITIALIZER
+
 # ifdef MALLOC_USE_SBRK
 /* This lock is used to serialize uses of the `sbrk' function (in both
    malloc and free, sbrk may be used several times in succession, and
    things will break if these multiple calls are interleaved with another
    thread's use of sbrk!).  */
-__UCLIBC_MUTEX_EXTERN(__malloc_sbrk_lock);
-#  define __malloc_lock_sbrk()	__UCLIBC_MUTEX_LOCK(__malloc_sbrk_lock)
-#  define __malloc_unlock_sbrk() __UCLIBC_MUTEX_UNLOCK(__malloc_sbrk_lock)
+extern malloc_mutex_t __malloc_sbrk_lock;
+#  define __malloc_lock_sbrk()	__pthread_mutex_lock (&__malloc_sbrk_lock)
+#  define __malloc_unlock_sbrk() __pthread_mutex_unlock (&__malloc_sbrk_lock)
 # endif /* MALLOC_USE_SBRK */
 
 #else /* !__UCLIBC_HAS_THREADS__ */
@@ -219,10 +222,9 @@ extern void __malloc_debug_printf (int indent, const char *fmt, ...);
 
 /* The malloc heap.  */
 extern struct heap_free_area *__malloc_heap;
-#if defined __UCLIBC_HAS_THREADS__
-#include <bits/uClibc_mutex.h>
-__UCLIBC_MUTEX_EXTERN(__malloc_heap_lock);
+#ifdef __UCLIBC_HAS_THREADS__
+extern malloc_mutex_t __malloc_heap_lock;
 #ifdef __UCLIBC_UCLINUX_BROKEN_MUNMAP__
-__UCLIBC_MUTEX_EXTERN(__malloc_mmb_heap_lock);
+extern malloc_mutex_t __malloc_mmb_heap_lock;
 #endif
 #endif