Log Message:-----------Document that many solid-state drives have volatile write-back caches.
Modified Files:-------------- pgsql/doc/src/sgml: wal.sgml (r1.61 -> r1.62) (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/wal.sgml?r1=1.61&r2=1.62)
