Update SysV parameter configuration documentation for FreeBSD.

FreeBSD hasn't made any use of kern.ipc.semmap since 1.1, and newer
releases reject attempts to set it altogether; so stop recommending
that it be adjusted.  Per bug #11161.

Back-patch to all supported branches.  Before 9.3, also incorporate
commit 7a42dff47, which touches the same text and for some reason
was not back-patched at the time.

diff --git a/doc/src/sgml/runtime.sgml b/doc/src/sgml/runtime.sgml
index fbb306d5f4940f444ae84989028739983a653388..1d91d92fe3618f7a89bb9189bef7c7d8c2eea275 100644 (file)
--- a/doc/src/sgml/runtime.sgml
+++ b/doc/src/sgml/runtime.sgml
@@ -747,14 +747,13 @@ psql: could not connect to server: No such file or directory
 
 # sysctl kern.ipc.shmall=32768
 # sysctl kern.ipc.shmmax=134217728
-# sysctl kern.ipc.semmap=256
 
-        To have these settings persist over reboots, modify
+        To make these settings persist over reboots, modify
         /etc/sysctl.conf.
        
 
        
-        The remaining semaphore settings are read-only as far as
+        These semaphore-related settings are read-only as far as
         sysctl is concerned, but can be set in
         /boot/loader.conf:
 
@@ -763,7 +762,10 @@ kern.ipc.semmns=512
 kern.ipc.semmnu=256
 
         After modifying these values a reboot is required for the new
-        settings to take affect.
+        settings to take effect.
+        (Note: FreeBSD does not use SEMMAP.  Older versions
+        would accept but ignore a setting for kern.ipc.semmap;
+        newer versions reject it altogether.)