doc: Add index entries and better documentation link for Linux OOM

diff --git a/doc/src/sgml/runtime.sgml b/doc/src/sgml/runtime.sgml
index 6d5b1082d2dbb4e2564a4b6cd30c235deb2ee4dd..087cd0a90c923f5fd40ce7611c136f7a242792f3 100644 (file)
--- a/doc/src/sgml/runtime.sgml
+++ b/doc/src/sgml/runtime.sgml
@@ -1245,6 +1245,18 @@ default:\
   
    Linux Memory Overcommit
 
+   
+    memory overcommit
+   
+
+   
+    OOM
+   
+
+   
+    overcommit
+   
+
    
     In Linux 2.4 and later, the default virtual memory behavior is not
     optimal for PostgreSQL. Because of the
@@ -1306,7 +1318,7 @@ sysctl -w vm.overcommit_memory=2
     or placing an equivalent entry in /etc/sysctl.conf.
     You might also wish to modify the related setting
     vm.overcommit_ratio.  For details see the kernel documentation
-    file <filename>Documentation/vm/overcommit-accounting>.
+    file <ulink url="https://www.kernel.org/doc/Documentation/vm/overcommit-accounting">>.