Improve fsync documentation by stating that -W _0_ turns of write

caching.

diff --git a/doc/src/sgml/wal.sgml b/doc/src/sgml/wal.sgml
index 1d1924bc8df24342b116b56823f638cbc007b6f9..0afb9d6af600da01c943534f0089f97dc311c8d4 100644 (file)
--- a/doc/src/sgml/wal.sgml
+++ b/doc/src/sgml/wal.sgml
@@ -73,7 +73,7 @@
       
         On Linux, IDE drives can be queried using
         hdparm -I; write caching is enabled if there is
-        a * next to Write cache.  hdparm -W
+        a * next to Write cache.  hdparm -W 0
         can be used to turn off write caching.  SCSI drives can be queried
         using sdparm.
         Use sdparm --get=WCE to check