Index: sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c
===================================================================
--- sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c	(wersja 211930)
+++ sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c	(kopia robocza)
@@ -3780,10 +3780,12 @@
 
 	/* Serialize access via arc_lowmem_lock. */
 	mutex_enter(&arc_lowmem_lock);
+	mutex_enter(&arc_reclaim_thr_lock);
 	needfree = 1;
 	cv_signal(&arc_reclaim_thr_cv);
 	while (needfree)
-		tsleep(&needfree, 0, "zfs:lowmem", hz / 5);
+		msleep(&needfree, &arc_reclaim_thr_lock, 0, "zfs:lowmem", 0);
+	mutex_exit(&arc_reclaim_thr_lock);
 	mutex_exit(&arc_lowmem_lock);
 }
 #endif