1 files changed, 5 insertions, 3 deletions

diff --git a/include/linux/seccomp.h b/include/linux/seccomp.h
index 4054b0994071..5d586a45a319 100644
--- a/include/linux/seccomp.h
+++ b/include/linux/seccomp.h
@@ -3,6 +3,8 @@
 
 #include <uapi/linux/seccomp.h>
 
+#define SECCOMP_FILTER_FLAG_MASK        (SECCOMP_FILTER_FLAG_TSYNC)
+
 #ifdef CONFIG_SECCOMP
 
 #include <linux/thread_info.h>
@@ -14,11 +16,11 @@ struct seccomp_filter;
  *
  * @mode:  indicates one of the valid values above for controlled
  *         system calls available to a process.
- * @filter: The metadata and ruleset for determining what system calls
- *          are allowed for a task.
+ * @filter: must always point to a valid seccomp-filter or NULL as it is
+ *          accessed without locking during system call entry.
  *
  *          @filter must only be accessed from the context of current as there
- *          is no locking.
+ *          is no read locking.
  */
 struct seccomp {
         int mode;