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From: "Andrey V. Elsukov" <ae@FreeBSD.org>
Date: Fri, 4 Nov 2011 06:14:19 +0000 (UTC)
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Subject: svn commit: r227073 - stable/9/sys/geom/part
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Author: ae
Date: Fri Nov  4 06:14:18 2011
New Revision: 227073
URL: http://svn.freebsd.org/changeset/base/227073

Log:
  MFC r226880:
    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.
  
    Tested by:	nwhitehorn
  
  Approved by:	re (kib)

Modified:
  stable/9/sys/geom/part/g_part.c
Directory Properties:
  stable/9/sys/   (props changed)
  stable/9/sys/amd64/include/xen/   (props changed)
  stable/9/sys/boot/   (props changed)
  stable/9/sys/boot/i386/efi/   (props changed)
  stable/9/sys/boot/ia64/efi/   (props changed)
  stable/9/sys/boot/ia64/ski/   (props changed)
  stable/9/sys/boot/powerpc/boot1.chrp/   (props changed)
  stable/9/sys/boot/powerpc/ofw/   (props changed)
  stable/9/sys/cddl/contrib/opensolaris/   (props changed)
  stable/9/sys/conf/   (props changed)
  stable/9/sys/contrib/dev/acpica/   (props changed)
  stable/9/sys/contrib/octeon-sdk/   (props changed)
  stable/9/sys/contrib/pf/   (props changed)
  stable/9/sys/contrib/x86emu/   (props changed)

Modified: stable/9/sys/geom/part/g_part.c
==============================================================================
--- stable/9/sys/geom/part/g_part.c	Fri Nov  4 04:41:58 2011	(r227072)
+++ stable/9/sys/geom/part/g_part.c	Fri Nov  4 06:14:18 2011	(r227073)
@@ -451,6 +451,10 @@ g_part_parm_geom(struct gctl_req *req, c
 		gctl_error(req, "%d %s '%s'", EINVAL, name, gname);
 		return (EINVAL);
 	}
+	if ((gp->flags & G_GEOM_WITHER) != 0) {
+		gctl_error(req, "%d %s", ENXIO, gname);
+		return (ENXIO);
+	}
 	*v = gp;
 	return (0);
 }