chiark / gitweb /
man: sd_readahead is not actually available in libsystemd-daemon
[elogind.git] / man / sd_readahead.xml
index 178f907..25fe5b2 100644 (file)
 
         <refnamediv>
                 <refname>sd_readahead</refname>
-                <refpurpose>Control ongoing disk read-ahead operations</refpurpose>
+                <refpurpose>Control ongoing disk boot-time read-ahead operations</refpurpose>
         </refnamediv>
 
         <refsynopsisdiv>
                 <funcsynopsis>
-                        <funcsynopsisinfo>#include "sd-daemon.h"</funcsynopsisinfo>
+                        <funcsynopsisinfo>#include "sd-readahead.h"</funcsynopsisinfo>
 
                         <funcprototype>
                                 <funcdef>int <function>sd_readahead</function></funcdef>
@@ -62,7 +62,7 @@
                 <title>Description</title>
                 <para><function>sd_readahead()</function> may be
                 called by programs involved with early boot-up to
-                control ongoing disk read-ahead operations. It may be
+                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
                 <title>Notes</title>
 
                 <para>This function is provided by the reference
-                implementation of APIs for new-style daemons 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>
+                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>/dev/.systemd/readahead/</filename> which is
+                <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/tree/src/sd-daemon.c"/>
+                <ulink url="http://cgit.freedesktop.org/systemd/tree/src/sd-readahead.c"/>
                 resp. <ulink
-                url="http://cgit.freedesktop.org/systemd/tree/src/sd-daemon.h"/></para>
+                url="http://cgit.freedesktop.org/systemd/tree/src/sd-readahead.h"/></para>
 
                 <para><function>sd_readahead()</function> is
                 implemented in the reference implementation's drop-in
-                <filename>sd-daemon.c</filename> and
-                <filename>sd-daemon.h</filename> files. It is
+                <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_daemon</refentrytitle><manvolnum>7</manvolnum></citerefentry></para>
+                <citerefentry><refentrytitle>sd-readahead</refentrytitle><manvolnum>7</manvolnum></citerefentry></para>
 
                 <para>If -DDISABLE_SYSTEMD is set during compilation
                 this function will always return 0 and otherwise
@@ -170,7 +170,7 @@ sd_readahead("noreplay");</programlisting>
                 <title>See Also</title>
                 <para>
                         <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
-                        <citerefentry><refentrytitle>sd_daemon</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
+                        <citerefentry><refentrytitle>sd-readahead</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
                         <citerefentry><refentrytitle>daemon</refentrytitle><manvolnum>7</manvolnum></citerefentry>
                 </para>
         </refsect1>