diff --git a/[refs] b/[refs]
index d4e894065ce6..58e0854ab113 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 7c2c7d993044cddc5010f6f429b100c63bc7dffb
+refs/heads/master: 795e2fe0a3b69dbc040d7efcf517e0cbad6901d0
diff --git a/trunk/include/linux/fs_struct.h b/trunk/include/linux/fs_struct.h
index a97c053d3a9a..18b467dbe278 100644
--- a/trunk/include/linux/fs_struct.h
+++ b/trunk/include/linux/fs_struct.h
@@ -4,7 +4,10 @@
 #include <linux/path.h>
 
 struct fs_struct {
-	atomic_t count;
+	atomic_t count;	/* This usage count is used by check_unsafe_exec() for
+			 * security checking purposes - therefore it may not be
+			 * incremented, except by clone(CLONE_FS).
+			 */
 	rwlock_t lock;
 	int umask;
 	struct path root, pwd;