fcntl.2: Add para introducing advisory locks and noting existence of OFD locks

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

diff --git a/man2/fcntl.2 b/man2/fcntl.2
index 3253e09befa28d6eb9c1709fe9158a772460e65d..a197ba9de60d864044bc9d916557d0515d6c30bd 100644 (file)
--- a/man2/fcntl.2
+++ b/man2/fcntl.2
@@ -206,6 +206,11 @@ and
 .BR O_SYNC
 flags; see BUGS, below.
 .SS Advisory record locking
+Linux implements traditional ("process-associated") UNIX record locks,
+as standardized by POSIX.
+For a Linux-specific alternative with better semantics,
+see the discussion of open file description locks below.
+
 .BR F_SETLK ,
 .BR F_SETLKW ,
 and