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Use broadcast after freeing a cache entry. A waiter may not 

use a cache entry after wakeup leading to possible deadlock.
This commit is contained in:
hannken 2014-05-25 13:52:12 +00:00
parent 55de4c1831
commit 20e9f60dc1
1 changed files with 3 additions and 3 deletions
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6
sys/dev/fss.c
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@ -1,4 +1,4 @@
/* $NetBSD: fss.c,v 1.88 2014/03/16 05:20:26 dholland Exp $ */
/* $NetBSD: fss.c,v 1.89 2014/05/25 13:52:12 hannken Exp $ */
/*-
* Copyright (c) 2003 The NetBSD Foundation, Inc.
@ -36,7 +36,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: fss.c,v 1.88 2014/03/16 05:20:26 dholland Exp $");
__KERNEL_RCSID(0, "$NetBSD: fss.c,v 1.89 2014/05/25 13:52:12 hannken Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -1154,7 +1154,7 @@ fss_bs_thread(void *arg)
fss_error(sc, "write error on backing store");
scp->fc_type = FSS_CACHE_FREE;
cv_signal(&sc->sc_cache_cv);
cv_broadcast(&sc->sc_cache_cv);
break;
}