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rnd_add_uint32() doens't support concurent calls for the same rnd_source, 

call it with dksc->sc_iolock held.
This commit is contained in:
bouyer 2018-11-24 18:09:13 +00:00
parent ab63934442
commit 57e978edac
1 changed files with 4 additions and 4 deletions
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8
sys/dev/dksubr.c
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@ -1,4 +1,4 @@
/* $NetBSD: dksubr.c,v 1.103 2018/09/03 16:29:30 riastradh Exp $ */
/* $NetBSD: dksubr.c,v 1.104 2018/11/24 18:09:13 bouyer 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 1.103 2018/09/03 16:29:30 riastradh Exp $");
__KERNEL_RCSID(0, "$NetBSD: dksubr.c,v 1.104 2018/11/24 18:09:13 bouyer Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -460,11 +460,11 @@ dk_done1(struct dk_softc *dksc, struct buf *bp, bool lock)
if (lock)
mutex_enter(&dksc->sc_iolock);
disk_unbusy(dk, bp->b_bcount - bp->b_resid, (bp->b_flags & B_READ));
if (lock)
mutex_exit(&dksc->sc_iolock);
if ((dksc->sc_flags & DKF_NO_RND) == 0)
rnd_add_uint32(&dksc->sc_rnd_source, bp->b_rawblkno);
if (lock)
mutex_exit(&dksc->sc_iolock);
biodone(bp);
}