Attachment 130334 Details for Bug 174226 – file.diff

[patch] file.diff

file.diff (text/plain), 1.15 KB, created by Bas Smeelen on 2012-12-06 11:50:00 UTC

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Creator: Bas Smeelen

Created: 2012-12-06 11:50:00 UTC

Size: 1.15 KB

patch

obsolete

>Index: book.xml
>===================================================================
>--- book.xml	(revision 40280)
>+++ book.xml	(working copy)
>@@ -3488,9 +3488,20 @@
> 	</question>
> 
> 	<answer>
>-	  <para>An answer for this question can be found in the &os;
>-	    Glossary, see <ulink
>-	      url="&url.books.handbook;/freebsd-glossary.html#lor-glossary">LOR</ulink>.</para>
>+	  <para>The &os; kernel uses a number of resource locks to
>+	    arbitrate contention for those resources.  A run-time
>+	    lock diagnostic system found in &os.current; kernels
>+	    (but removed for releases), called &man.witness.4;,
>+	    detects the potential for deadlocks due to locking errors.
>+	    (&man.witness.4; is actually slightly conservative, so
>+	    it is possible to get false positives.)  A true positive
>+	    report indicates that <quote>if you were unlucky, a deadlock would
>+	    have happened here</quote>.</para>
>+
>+	  <para>True positive LORs tend to get fixed quickly, so
>+	    check &a.current.url; and the
>+	    <ulink url="http://sources.zabbadoz.net/freebsd/lor.html">LORs Seen
>+	    </ulink> page before posting to the mailing lists.</para>
> 	</answer>
>       </qandaentry>

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