diff --git a/sys/kern/vfs_jops.c b/sys/kern/vfs_jops.c
--- a/sys/kern/vfs_jops.c
+++ b/sys/kern/vfs_jops.c
@@ -957,7 +957,7 @@
     ) {
 	jreclist_undo_file(&jreclist, ap->a_vp, 
 			   JRUNDO_FILEDATA|JRUNDO_SIZE|JRUNDO_MTIME, 
-			   ap->a_offset, btoc(ap->a_count));
+			   ap->a_offset, ap->a_count);
     }
     error = vop_journal_operate_ap(&ap->a_head);
     if (error == 0 && ap->a_count > 0) {