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From: Robert Watson <rwatson@FreeBSD.org>
To: Perforce Change Reviews <perforce@freebsd.org>
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Subject: PERFORCE change 113843 for review
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http://perforce.freebsd.org/chv.cgi?CH=113843

Change 113843 by rwatson@rwatson_cinnamon on 2007/02/01 16:17:41

	Volatile.

Affected files ...

.. //depot/projects/zcopybpf/src/sys/net/bpf.h#6 edit

Differences ...

==== //depot/projects/zcopybpf/src/sys/net/bpf.h#6 (text+ko) ====

@@ -183,9 +183,9 @@
  * fit in a single page on all architectures.
  */
 struct bpf_zbuf_header {
-	u_int	bzh_kernel_gen;		/* Kernel generation number. */
-	u_int	bzh_kernel_len;		/* Length of buffer. */
-	u_int	bzh_user_gen;		/* User generation number. */
+	volatile u_int	bzh_kernel_gen;	/* Kernel generation number. */
+	volatile u_int	bzh_kernel_len;	/* Length of buffer. */
+	volatile u_int	bzh_user_gen;	/* User generation number. */
 	u_int	_bzh_pad[5];		/* Padding out to 32-byte boundary. */
 };