readahead: wipe out readahead

1 files changed, 0 insertions, 178 deletions

diff --git a/man/sd_readahead.xml b/man/sd_readahead.xml
deleted file mode 100644
index 98272997cb..0000000000
--- a/man/sd_readahead.xml
+++ /dev/null
@@ -1,178 +0,0 @@
-<?xml version='1.0'?> <!--*-nxml-*-->
-<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
-        "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
-
-<!--
-  This file is part of systemd.
-
-  Copyright 2010 Lennart Poettering
-
-  systemd is free software; you can redistribute it and/or modify it
-  under the terms of the GNU Lesser General Public License as published by
-  the Free Software Foundation; either version 2.1 of the License, or
-  (at your option) any later version.
-
-  systemd is distributed in the hope that it will be useful, but
-  WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-  Lesser General Public License for more details.
-
-  You should have received a copy of the GNU Lesser General Public License
-  along with systemd; If not, see <http://www.gnu.org/licenses/>.
--->
-
-<refentry id="sd_readahead" conditional='ENABLE_READAHEAD'>
-
-        <refentryinfo>
-                <title>sd_readahead</title>
-                <productname>systemd</productname>
-
-                <authorgroup>
-                        <author>
-                                <contrib>Developer</contrib>
-                                <firstname>Lennart</firstname>
-                                <surname>Poettering</surname>
-                                <email>lennart@poettering.net</email>
-                        </author>
-                </authorgroup>
-        </refentryinfo>
-
-        <refmeta>
-                <refentrytitle>sd_readahead</refentrytitle>
-                <manvolnum>3</manvolnum>
-        </refmeta>
-
-        <refnamediv>
-                <refname>sd_readahead</refname>
-                <refpurpose>Control ongoing disk boot-time read-ahead operations</refpurpose>
-        </refnamediv>
-
-        <refsynopsisdiv>
-                <funcsynopsis>
-                        <funcsynopsisinfo>#include "sd-readahead.h"</funcsynopsisinfo>
-
-                        <funcprototype>
-                                <funcdef>int <function>sd_readahead</function></funcdef>
-                                <paramdef>const char *<parameter>action</parameter></paramdef>
-                        </funcprototype>
-                </funcsynopsis>
-        </refsynopsisdiv>
-
-        <refsect1>
-                <title>Description</title>
-                <para><function>sd_readahead()</function> may be
-                called by programs involved with early boot-up to
-                control ongoing boot-time disk read-ahead operations. It may be
-                used to terminate read-ahead operations in case an
-                uncommon disk access pattern is to be expected and
-                hence read-ahead replay or collection is unlikely to
-                have the desired speed-up effect on the current or
-                future boot-ups.</para>
-
-                <para>The <parameter>action</parameter> should be one
-                of the following strings:</para>
-
-                <variablelist>
-                        <varlistentry>
-                                <term>cancel</term>
-
-                                <listitem><para>Terminates read-ahead
-                                data collection, and drops all
-                                read-ahead data collected during this
-                                boot-up.</para></listitem>
-                        </varlistentry>
-
-                        <varlistentry>
-                                <term>done</term>
-
-                                <listitem><para>Terminates read-ahead
-                                data collection, but keeps all
-                                read-ahead data collected during this
-                                boot-up around for use during
-                                subsequent boot-ups.</para></listitem>
-                        </varlistentry>
-
-                        <varlistentry>
-                                <term>noreplay</term>
-
-                                <listitem><para>Terminates read-ahead
-                                replay.</para></listitem>
-                        </varlistentry>
-
-                </variablelist>
-
-        </refsect1>
-
-        <refsect1>
-                <title>Return Value</title>
-
-                <para>On failure, these calls return a negative
-                errno-style error code. It is generally recommended to
-                ignore the return value of this call.</para>
-        </refsect1>
-
-        <refsect1>
-                <title>Notes</title>
-
-                <para>This function is provided by the reference
-                implementation of APIs for controlling boot-time
-                read-ahead and distributed with the systemd
-                package. The algorithm it implements is simple, and
-                can easily be reimplemented in daemons if it is
-                important to support this interface without using the
-                reference implementation.</para>
-
-                <para>Internally, this function creates a file in
-                <filename>/run/systemd/readahead/</filename> which is
-                then used as flag file to notify the read-ahead
-                subsystem.</para>
-
-                <para>For details about the algorithm check the
-                liberally licensed reference implementation sources:
-                <ulink url="http://cgit.freedesktop.org/systemd/systemd/plain/src/readahead/sd-readahead.c"/>
-                and <ulink
-                url="http://cgit.freedesktop.org/systemd/systemd/plain/src/systemd/sd-readahead.h"/></para>
-
-                <para><function>sd_readahead()</function> is
-                implemented in the reference implementation's drop-in
-                <filename>sd-readahead.c</filename> and
-                <filename>sd-readahead.h</filename> files. It is
-                recommended that applications consuming this API copy
-                the implementation into their source tree. For more
-                details about the reference implementation, see
-                <citerefentry><refentrytitle>sd-readahead</refentrytitle><manvolnum>3</manvolnum></citerefentry></para>
-
-                <para>If -DDISABLE_SYSTEMD is set during compilation,
-                this function will always return 0 and otherwise
-                become a NOP.</para>
-        </refsect1>
-
-        <refsect1>
-                <title>Examples</title>
-
-                <example>
-                        <title>Cancelling all read-ahead operations</title>
-
-                        <para>During boots where SELinux has to
-                        relabel the file system hierarchy, it will
-                        create a large amount of disk accesses that
-                        are not necessary during normal boots. Hence
-                        it is a good idea to disable both read-ahead replay and read-ahead collection.
-                        </para>
-
-                        <programlisting>sd_readahead("cancel");
-sd_readahead("noreplay");</programlisting>
-                </example>
-
-        </refsect1>
-
-        <refsect1>
-                <title>See Also</title>
-                <para>
-                        <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
-                        <citerefentry><refentrytitle>sd-readahead</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
-                        <citerefentry><refentrytitle>daemon</refentrytitle><manvolnum>7</manvolnum></citerefentry>
-                </para>
-        </refsect1>
-
-</refentry>