No need to detach (and return EBUSY) if dk_openmask is non-zero.
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7f42001b43
commit
e331e1e077
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@ -1,4 +1,4 @@
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/* $NetBSD: md.c,v 1.67 2012/06/30 10:52:31 tsutsui Exp $ */
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/* $NetBSD: md.c,v 1.68 2014/03/13 10:22:35 hannken Exp $ */
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/*
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* Copyright (c) 1995 Gordon W. Ross, Leo Weppelman.
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@ -40,7 +40,7 @@
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: md.c,v 1.67 2012/06/30 10:52:31 tsutsui Exp $");
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__KERNEL_RCSID(0, "$NetBSD: md.c,v 1.68 2014/03/13 10:22:35 hannken Exp $");
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#ifdef _KERNEL_OPT
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#include "opt_md.h"
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@ -340,6 +340,10 @@ mdclose(dev_t dev, int flag, int fmt, struct lwp *l)
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break;
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}
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dk->dk_openmask = dk->dk_copenmask | dk->dk_bopenmask;
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if (dk->dk_openmask != 0) {
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mutex_exit(&dk->dk_openlock);
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return 0;
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}
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mutex_exit(&dk->dk_openlock);
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