<samba:parameter xmlns:samba="http://samba.org/common">
		<term><anchor id="LEVEL2OPLOCKS"/>level2 oplocks (S)</term>
		<listitem><para>This parameter controls whether Samba supports
		level2 (read-only) oplocks on a share.</para>
		
		<para>Level2, or read-only oplocks allow Windows NT clients 
		that have an oplock on a file to downgrade from a read-write oplock 
		to a read-only oplock once a second client opens the file (instead 
		of releasing all oplocks on a second open, as in traditional, 
		exclusive oplocks). This allows all openers of the file that 
		support level2 oplocks to cache the file for read-ahead only (ie. 
		they may not cache writes or lock requests) and increases performance 
		for many accesses of files that are not commonly written (such as 
		application .EXE files).</para>

		<para>Once one of the clients which have a read-only oplock 
		writes to the file all clients are notified (no reply is needed 
		or waited for) and told to break their oplocks to &quot;none&quot; and 
		delete any read-ahead caches.</para>

		<para>It is recommended that this parameter be turned on 
		to speed access to shared executables.</para>

		<para>For more discussions on level2 oplocks see the CIFS spec.</para>

		<para>Currently, if <link linkend="KERNELOPLOCKS"><parameter moreinfo="none">kernel 
		oplocks</parameter></link> are supported then level2 oplocks are 
		not granted (even if this parameter is set to <constant>yes</constant>). 
		Note also, the <link linkend="OPLOCKS"><parameter moreinfo="none">oplocks</parameter>
		</link> parameter must be set to <constant>yes</constant> on this share in order for 
		this parameter to have any effect.</para>

		<para>See also the <link linkend="OPLOCKS"><parameter moreinfo="none">oplocks</parameter>
		</link> and <link linkend="OPLOCKS"><parameter moreinfo="none">kernel oplocks</parameter>
		</link> parameters.</para>
		
		<para>Default: <command moreinfo="none">level2 oplocks = yes</command></para>
		</listitem>
		</samba:parameter>