readahead: wipe out readahead

6 files changed, 0 insertions, 511 deletions

diff --git a/man/sd-daemon.xml b/man/sd-daemon.xml
index d78a1151c5..5f331e740a 100644
--- a/man/sd-daemon.xml
+++ b/man/sd-daemon.xml
@@ -140,7 +140,6 @@
                         <citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
                         <citerefentry><refentrytitle>systemd.socket</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
                         <citerefentry project='man-pages'><refentrytitle>fprintf</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
-                        <citerefentry><refentrytitle>sd-readahead</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
                         <citerefentry project='die-net'><refentrytitle>pkg-config</refentrytitle><manvolnum>1</manvolnum></citerefentry>
                 </para>
         </refsect1>
diff --git a/man/sd-login.xml b/man/sd-login.xml
index d8d45048ed..f21170db16 100644
--- a/man/sd-login.xml
+++ b/man/sd-login.xml
@@ -131,7 +131,6 @@
                         <citerefentry><refentrytitle>sd_get_seats</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
                         <citerefentry><refentrytitle>sd_login_monitor_new</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
                         <citerefentry><refentrytitle>sd-daemon</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
-                        <citerefentry><refentrytitle>sd-readahead</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
                         <citerefentry project='die-net'><refentrytitle>pkg-config</refentrytitle><manvolnum>1</manvolnum></citerefentry>
                 </para>
         </refsect1>
diff --git a/man/sd-readahead.xml b/man/sd-readahead.xml
deleted file mode 100644
index bcc46b24d8..0000000000
--- a/man/sd-readahead.xml
+++ /dev/null
@@ -1,117 +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>Reference implementation of APIs for
-                controlling boot-time read-ahead</refpurpose>
-        </refnamediv>
-
-        <refsynopsisdiv>
-                <funcsynopsis>
-                        <funcsynopsisinfo>#include "sd-readahead.h"</funcsynopsisinfo>
-                </funcsynopsis>
-        </refsynopsisdiv>
-
-        <refsect1>
-                <title>Description</title>
-
-                <para><filename>sd-readahead.c</filename> and
-                <filename>sd-readahead.h</filename> provide a
-                reference implementation for APIs for controlling boot-time
-                read-ahead, as implemented by the read-ahead subsystem
-                of the
-                <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>
-                init system.</para>
-
-                <para>See
-                <citerefentry><refentrytitle>sd_readahead</refentrytitle><manvolnum>3</manvolnum></citerefentry>
-                for more information about the function
-                implemented.</para>
-        </refsect1>
-
-        <refsect1>
-                <title>Notes</title>
-
-                <para>This interface is provided by the reference
-                implementation of APIs for controlling boot-time
-                read-ahead and distributed with the systemd
-                package. The algorithms it implements are simple, and
-                can easily be reimplemented in daemons if it is
-                important to support this interface without using the
-                reference implementation. See the respective function
-                man pages for details.</para>
-
-                <para>In addition, for details about the algorithms,
-                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>These APIs are 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 these APIs copy
-                the implementation into their source tree, either
-                verbatim or in excerpts. These interfaces are
-                currently not available in a dynamic library.</para>
-
-                <para>The functions provided by this interface become
-                NOPs when -DDISABLE_SYSTEMD is set during
-                compilation. In addition, if
-                <filename>sd-readhead.c</filename> is compiled on
-                non-Linux systems it becomes NOPs.</para>
-        </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>sd-daemon</refentrytitle><manvolnum>3</manvolnum></citerefentry>
-                </para>
-        </refsect1>
-
-</refentry>
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>
diff --git a/man/systemd-notify.xml b/man/systemd-notify.xml
index 69baae0dce..684f490099 100644
--- a/man/systemd-notify.xml
+++ b/man/systemd-notify.xml
@@ -141,17 +141,6 @@
                                 <citerefentry><refentrytitle>sd_booted</refentrytitle><manvolnum>3</manvolnum></citerefentry>.</para></listitem>
                         </varlistentry>
 
-                        <varlistentry>
-                                <term><option>--readahead=</option></term>
-
-                                <listitem><para>Controls disk
-                                read-ahead operations. The argument
-                                must be a string, and either "cancel",
-                                "done" or "noreplay". For details
-                                about the semantics of this option see
-                                <citerefentry><refentrytitle>sd_readahead</refentrytitle><manvolnum>3</manvolnum></citerefentry>.</para></listitem>
-                        </varlistentry>
-
                         <xi:include href="standard-options.xml" xpointer="help" />
                         <xi:include href="standard-options.xml" xpointer="version" />
                 </variablelist>
diff --git a/man/systemd-readahead-replay.service.xml b/man/systemd-readahead-replay.service.xml
deleted file mode 100644
index 669fe78942..0000000000
--- a/man/systemd-readahead-replay.service.xml
+++ /dev/null
@@ -1,203 +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="systemd-readahead-replay.service" conditional='ENABLE_READAHEAD'
-          xmlns:xi="http://www.w3.org/2001/XInclude">
-
-        <refentryinfo>
-                <title>systemd-readahead-replay.service</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>systemd-readahead-replay.service</refentrytitle>
-                <manvolnum>8</manvolnum>
-        </refmeta>
-
-        <refnamediv>
-                <refname>systemd-readahead-replay.service</refname>
-                <refname>systemd-readahead-collect.service</refname>
-                <refname>systemd-readahead-done.service</refname>
-                <refname>systemd-readahead-done.timer</refname>
-                <refname>systemd-readahead</refname>
-                <refpurpose>Disk read ahead logic</refpurpose>
-        </refnamediv>
-
-        <refsynopsisdiv>
-                <para><filename>systemd-readahead-replay.service</filename></para>
-                <para><filename>systemd-readahead-collect.service</filename></para>
-                <para><filename>systemd-readahead-done.service</filename></para>
-                <para><filename>systemd-readahead-done.timer</filename></para>
-                <cmdsynopsis>
-                        <command>/usr/lib/systemd/systemd-readahead/systemd-readahead</command>
-                        <arg choice="opt" rep="repeat">OPTIONS</arg>
-                        <arg choice="plain">COMMAND</arg>
-                        <arg choice="opt">DIRECTORY | FILE</arg>
-                </cmdsynopsis>
-        </refsynopsisdiv>
-
-        <refsect1>
-                <title>Description</title>
-
-                <para><filename>systemd-readahead-collect.service</filename>
-                is a service that collects disk usage patterns at boot
-                time. <filename>systemd-readahead-replay.service</filename>
-                is a service that replays this access data collected
-                at the subsequent boot. Since disks tend to be
-                magnitudes slower than RAM, this is intended to improve
-                boot speeds by pre-loading early at boot all data on
-                disk that is known to be read for the complete boot
-                process.</para>
-
-                <para><filename>systemd-readahead-done.service</filename>
-                is executed a short while after boot completed and signals
-                <filename>systemd-readahead-collect.service</filename>
-                to end data collection. On this signal, this service
-                will then sort the collected disk accesses and store
-                information about them in
-                <filename>/.readahead</filename>.</para>
-
-                <para>Normally, both
-                <filename>systemd-readahead-collect.service</filename>
-                and
-                <filename>systemd-readahead-replay.service</filename>
-                are activated at boot so that access patterns from the
-                preceding boot are replayed and new data collected
-                for the subsequent boot. However, on read-only media
-                where the collected data cannot be stored, it might
-                be a good idea to disable
-                <filename>systemd-readahead-collect.service</filename>.</para>
-
-                <para>On rotating media, when replaying disk accesses
-                at early boot,
-                <filename>systemd-readahead-replay.service</filename>
-                will order read requests by their location on disk. On
-                non-rotating media, they will be ordered by their
-                original access timestamp. If the file system supports
-                it,
-                <filename>systemd-readahead-collect.service</filename>
-                will also defragment and rearrange files on disk to
-                optimize subsequent boot times.</para>
-        </refsect1>
-
-        <refsect1>
-                <title>Options</title>
-
-                <para><filename>systemd-readahead</filename> understands
-                the following options:</para>
-
-                <variablelist>
-                        <varlistentry>
-                                <term><option>--files-max=</option></term>
-
-                                <listitem><para>Maximum number of
-                                files to read ahead. Only valid
-                                for thes <command>collect</command>
-                                command.</para></listitem>
-                        </varlistentry>
-
-                        <varlistentry>
-                                <term><option>--file-size-max=</option></term>
-
-                                <listitem><para>Maximum size of files
-                                in bytes to read ahead. Only valid
-                                for the <command>collect</command>
-                                and <command>replay</command>
-                                commands.</para></listitem>
-                        </varlistentry>
-
-                        <varlistentry>
-                                <term><option>--timeout=</option></term>
-
-                                <listitem><para>Maximum time in microseconds
-                                to spend collecting data. Only valid
-                                for the <command>collect</command>
-                                command.</para></listitem>
-                        </varlistentry>
-
-                        <xi:include href="standard-options.xml" xpointer="help" />
-                        <xi:include href="standard-options.xml" xpointer="version" />
-                </variablelist>
-
-        </refsect1>
-
-        <refsect1>
-                <title>Commands</title>
-
-                <para>The following commands are understood by
-                <filename>systemd-readahead</filename>:</para> <variablelist>
-                        <varlistentry>
-                                <term><command>collect
-                                [<replaceable>DIRECTORY</replaceable>]</command></term>
-                                <listitem>
-                                        <para>Collect read-ahead data on
-                                        early boot. When terminating, it will
-                                        write out a pack file to the indicated
-                                        directory containing the read-ahead
-                                        data. </para>
-                                </listitem>
-                        </varlistentry>
-
-                        <varlistentry>
-                                <term><command>replay
-                                [<replaceable>DIRECTORY</replaceable>]</command></term>
-                                <listitem>
-                                        <para>Perform read-ahead on the
-                                        specified directory tree.</para>
-                                </listitem>
-                        </varlistentry>
-
-                        <varlistentry>
-                                <term><command>analyze
-                                [<replaceable>FILE</replaceable>]</command></term>
-                                <listitem>
-                                        <para>Dumps the content of the
-                                        read-ahead pack file to the
-                                        terminal. For each file, the
-                                        output lists approximately how
-                                        much will be read ahead by
-                                        the <command>replay</command>
-                                        command.</para>
-                                </listitem>
-                        </varlistentry>
-
-                </variablelist>
-        </refsect1>
-
-        <refsect1>
-                <title>See Also</title>
-                <para>
-                        <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>
-                </para>
-        </refsect1>
-
-</refentry>