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Mark disklabel only invalid on the last close. Existing openers might see 

temporarily invalid data while it is re-read.
This commit is contained in:
mlelstv 2015-07-11 09:45:16 +00:00
parent 3867e136be
commit 920b679d14
1 changed files with 4 additions and 5 deletions
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9
sys/dev/dksubr.c
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@ -1,4 +1,4 @@
/* $NetBSD: dksubr.c,v 1.63 2015/05/09 13:07:20 christos Exp $ */
/* $NetBSD: dksubr.c,v 1.64 2015/07/11 09:45:16 mlelstv Exp $ */
/*-
* Copyright (c) 1996, 1997, 1998, 1999, 2002, 2008 The NetBSD Foundation, Inc.
@ -30,7 +30,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: dksubr.c,v 1.63 2015/05/09 13:07:20 christos Exp $");
__KERNEL_RCSID(0, "$NetBSD: dksubr.c,v 1.64 2015/07/11 09:45:16 mlelstv Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -194,11 +194,10 @@ dk_close(struct dk_softc *dksc, dev_t dev,
if (dk->dk_openmask == 0) {
if (dkd->d_lastclose != NULL)
(*dkd->d_lastclose)(dksc->sc_dev);
if ((dksc->sc_flags & DKF_KLABEL) == 0)
dksc->sc_flags &= ~DKF_VLABEL;
}
if ((dksc->sc_flags & DKF_KLABEL) == 0)
dksc->sc_flags &= ~DKF_VLABEL;
mutex_exit(&dk->dk_openlock);
return 0;
}