diff --git a/man2/mount.2 b/man2/mount.2
index 94e19e2c4..f21fabc52 100644
--- a/man2/mount.2
+++ b/man2/mount.2
@@ -385,6 +385,9 @@ Attempts to change the setting of the
 and
 .BR MS_SILENT
 flags during a remount are silently ignored.
+Note that changes to per-superblock flags are visible via
+all mount points of the associated filesystem
+(because the per-superblock flags are shared by all mount points).
 .PP
 Since Linux 3.17,
 .\" commit ffbc6f0ead47fa5a1dc9642b0331cb75c20a640e