Index: cddl/contrib/opensolaris/head/thread.h
===================================================================
--- cddl/contrib/opensolaris/head/thread.h	(wersja 195337)
+++ cddl/contrib/opensolaris/head/thread.h	(kopia robocza)
@@ -53,7 +53,6 @@
 #define	mutex_lock(l)		pthread_mutex_lock(l)
 #define	mutex_trylock(l)	pthread_mutex_trylock(l)
 #define	mutex_unlock(l)		pthread_mutex_unlock(l)
-#define	mutex_owned(l)		pthread_mutex_isowned_np(l)
 #define	rwlock_init(l,f,a)	pthread_rwlock_init(l,NULL)
 #define	rwlock_destroy(l)	pthread_rwlock_destroy(l)
 #define	rw_rdlock(l)		pthread_rwlock_rdlock(l)
Index: cddl/contrib/opensolaris/lib/libzpool/common/kernel.c
===================================================================
--- cddl/contrib/opensolaris/lib/libzpool/common/kernel.c	(wersja 195337)
+++ cddl/contrib/opensolaris/lib/libzpool/common/kernel.c	(kopia robocza)
@@ -115,6 +115,14 @@
 	mp->initialized = B_FALSE;
 }
 
+int
+zmutex_owned(kmutex_t *mp)
+{
+	ASSERT(mp->initialized == B_TRUE);
+
+	return (mp->m_owner == curthread);
+}
+
 void
 mutex_enter(kmutex_t *mp)
 {
Index: cddl/contrib/opensolaris/lib/libzpool/common/sys/zfs_context.h
===================================================================
--- cddl/contrib/opensolaris/lib/libzpool/common/sys/zfs_context.h	(wersja 195337)
+++ cddl/contrib/opensolaris/lib/libzpool/common/sys/zfs_context.h	(kopia robocza)
@@ -237,9 +237,11 @@
 
 #define	mutex_init(mp, b, c, d)		zmutex_init((kmutex_t *)(mp))
 #define	mutex_destroy(mp)		zmutex_destroy((kmutex_t *)(mp))
+#define	mutex_owned(mp)			zmutex_owned((kmutex_t *)(mp))
 
 extern void zmutex_init(kmutex_t *mp);
 extern void zmutex_destroy(kmutex_t *mp);
+extern int zmutex_owned(kmutex_t *mp);
 extern void mutex_enter(kmutex_t *mp);
 extern void mutex_exit(kmutex_t *mp);
 extern int mutex_tryenter(kmutex_t *mp);