diff -r cfbd9bc39595 -r b2bf89333345 usr/src/uts/common/fs/zfs/zio.c
--- a/usr/src/uts/common/fs/zfs/zio.c	Fri May 07 15:32:53 2010 -0700
+++ b/usr/src/uts/common/fs/zfs/zio.c	Fri May 07 17:45:58 2010 -0700
@@ -1031,8 +1031,6 @@
 	if (zio->io_child_type == ZIO_CHILD_LOGICAL) {
 		if (BP_GET_DEDUP(bp))
 			zio->io_pipeline = ZIO_DDT_FREE_PIPELINE;
-		else
-			arc_free(zio->io_spa, bp);
 	}
 
 	return (ZIO_PIPELINE_CONTINUE);