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From: Alexander Motin <mav@FreeBSD.org>
Date: Sun, 19 Sep 2010 19:53:42 +0000 (UTC)
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Subject: svn commit: r212877 - stable/7/sys/geom
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Author: mav
Date: Sun Sep 19 19:53:41 2010
New Revision: 212877
URL: http://svn.freebsd.org/changeset/base/212877

Log:
  MFC r205619:
  Do not fetch precise time of request start when stats collection disabled.

Modified:
  stable/7/sys/geom/geom_io.c
Directory Properties:
  stable/7/sys/   (props changed)
  stable/7/sys/cddl/contrib/opensolaris/   (props changed)
  stable/7/sys/contrib/dev/acpica/   (props changed)
  stable/7/sys/contrib/pf/   (props changed)

Modified: stable/7/sys/geom/geom_io.c
==============================================================================
--- stable/7/sys/geom/geom_io.c	Sun Sep 19 19:52:26 2010	(r212876)
+++ stable/7/sys/geom/geom_io.c	Sun Sep 19 19:53:41 2010	(r212877)
@@ -374,7 +374,10 @@ g_io_request(struct bio *bp, struct g_co
 	    ("Bio already on queue bp=%p", bp));
 	bp->bio_flags |= BIO_ONQUEUE;
 
-	binuptime(&bp->bio_t0);
+	if (g_collectstats)
+		binuptime(&bp->bio_t0);
+	else
+		getbinuptime(&bp->bio_t0);
 
 	/*
 	 * The statistics collection is lockless, as such, but we