patch-2.4.5 linux/Documentation/DocBook/kernel-locking.tmpl
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- Lines: 14
- Date:
Sat May 19 17:43:05 2001
- Orig file:
v2.4.4/linux/Documentation/DocBook/kernel-locking.tmpl
- Orig date:
Fri Apr 6 10:42:55 2001
diff -u --recursive --new-file v2.4.4/linux/Documentation/DocBook/kernel-locking.tmpl linux/Documentation/DocBook/kernel-locking.tmpl
@@ -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
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