1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>lock_sock_fast</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="index.html" title="Linux Networking and Network Devices APIs"><link rel="up" href="ch01s02.html" title="Socket Buffer Functions"><link rel="prev" href="API---sk-mem-reclaim.html" title="__sk_mem_reclaim"><link rel="next" href="API---skb-recv-datagram.html" title="__skb_recv_datagram"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span class="phrase">lock_sock_fast</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API---sk-mem-reclaim.html">Prev</a>&#160;</td><th width="60%" align="center">Socket Buffer Functions</th><td width="20%" align="right">&#160;<a accesskey="n" href="API---skb-recv-datagram.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-lock-sock-fast"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>lock_sock_fast &#8212; 
2     fast version of lock_sock
3 </p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="funcsynopsis"><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">bool <b class="fsfunc">lock_sock_fast </b>(</code></td><td>struct sock * <var class="pdparam">sk</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a name="idp1096557652"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>sk</code></em></span></dt><dd><p>
4     socket
5    </p></dd></dl></div></div><div class="refsect1"><a name="idp1096559236"></a><h2>Description</h2><p>
6   This version should be used for very small section, where process wont block
7   return false if fast path is taken
8   sk_lock.slock locked, owned = 0, BH disabled
9   return true if slow path is taken
10   sk_lock.slock unlocked, owned = 1, BH enabled
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