diff -urN -I \$.*\$ -X /tmp/kerndiff.hKrYxB --minimal linux-2.4.4-official/Documentation/DocBook/kernel-locking.tmpl working-2.4.4-rcu/Documentation/DocBook/kernel-locking.tmpl --- linux-2.4.4-official/Documentation/DocBook/kernel-locking.tmpl Tue May 1 12:26:15 2001 +++ working-2.4.4-rcu/Documentation/DocBook/kernel-locking.tmpl Wed May 2 21:14:19 +2001 @@ -760,8 +760,11 @@ </para> <para> - Any atomic operation is defined to act as a memory barrier - (ie. as per the <function>mb()</function> macro). Also, + Some atomic operations are defined to act as a memory barrier + (ie. as per the <function>mb()</function> macro, but if in + doubt, be explicit. + <!-- Rusty Russell 2 May 2001, 2.4.4 --> + Also, spinlock operations act as partial barriers: operations after gaining a spinlock will never be moved to precede the <function>spin_lock()</function> call, and operations before -- Premature optmztion is rt of all evl. --DK - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/