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From: "Andrey V. Elsukov" <ae@FreeBSD.org>
Date: Thu, 26 Jan 2012 07:51:52 +0000 (UTC)
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Subject: svn commit: r230566 - stable/8/sys/geom/part
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Author: ae
Date: Thu Jan 26 07:51:51 2012
New Revision: 230566
URL: http://svn.freebsd.org/changeset/base/230566

Log:
  MFC r226880 (modified version):
    Our geom withering function could take some time before geom with its
    providers and consumers will be destroyed.  Before take some actions
    with a geom, check that it is not destroyed at the moment.

Modified:
  stable/8/sys/geom/part/g_part.c
Directory Properties:
  stable/8/sys/   (props changed)

Modified: stable/8/sys/geom/part/g_part.c
==============================================================================
--- stable/8/sys/geom/part/g_part.c	Thu Jan 26 07:42:54 2012	(r230565)
+++ stable/8/sys/geom/part/g_part.c	Thu Jan 26 07:51:51 2012	(r230566)
@@ -320,6 +320,8 @@ g_part_parm_geom(const char *name, struc
 	gp = g_part_find_geom(name);
 	if (gp == NULL)
 		return (EINVAL);
+	if ((gp->flags & G_GEOM_WITHER) != 0)
+		return (ENXIO);
 	*v = gp;
 	return (0);
 }