diff --git a/sys/kern/kern_acl.c b/sys/kern/kern_acl.c
index 63be63d733a..a42fe147106 100644
--- a/sys/kern/kern_acl.c
+++ b/sys/kern/kern_acl.c
@@ -30,6 +30,9 @@
 /*
  * Developed by the TrustedBSD Project.
  * Support for POSIX.1e access control lists.
+ *
+ * XXX: When vn_start_write() was scattered throughout the kernel, it
+ * was not scattered here for some reason.  It needs to be.
  */
 
 #include "opt_cap.h"
diff --git a/sys/kern/subr_acl_posix1e.c b/sys/kern/subr_acl_posix1e.c
index 63be63d733a..a42fe147106 100644
--- a/sys/kern/subr_acl_posix1e.c
+++ b/sys/kern/subr_acl_posix1e.c
@@ -30,6 +30,9 @@
 /*
  * Developed by the TrustedBSD Project.
  * Support for POSIX.1e access control lists.
+ *
+ * XXX: When vn_start_write() was scattered throughout the kernel, it
+ * was not scattered here for some reason.  It needs to be.
  */
 
 #include "opt_cap.h"
diff --git a/sys/kern/vfs_acl.c b/sys/kern/vfs_acl.c
index 63be63d733a..a42fe147106 100644
--- a/sys/kern/vfs_acl.c
+++ b/sys/kern/vfs_acl.c
@@ -30,6 +30,9 @@
 /*
  * Developed by the TrustedBSD Project.
  * Support for POSIX.1e access control lists.
+ *
+ * XXX: When vn_start_write() was scattered throughout the kernel, it
+ * was not scattered here for some reason.  It needs to be.
  */
 
 #include "opt_cap.h"