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Lock the underlying vnode around VOP_BMAP() and VOP_READ(). From John Kohl.

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mycroft 1995-10-05 06:20:57 +00:00
parent e160549f5b
commit d40c1f54bd
1 changed files with 5 additions and 1 deletions
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6
sys/dev/vnd.c
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@ -1,4 +1,4 @@
/* $NetBSD: vnd.c,v 1.20 1995/07/04 07:18:27 mycroft Exp $ */
/* $NetBSD: vnd.c,v 1.21 1995/10/05 06:20:57 mycroft Exp $ */
/*
* Copyright (c) 1988 University of Utah.
@ -228,7 +228,9 @@ vndstrategy(bp)
int off, s, nra;
nra = 0;
VOP_LOCK(vnd->sc_vp);
error = VOP_BMAP(vnd->sc_vp, bn / bsize, &vp, &nbn, &nra);
VOP_UNLOCK(vnd->sc_vp);
if (error == 0 && (long)nbn == -1)
error = EIO;
#ifdef DEBUG
@ -508,7 +510,9 @@ vndsetcred(vnd, cred)
auio.uio_rw = UIO_READ;
auio.uio_segflg = UIO_SYSSPACE;
auio.uio_resid = aiov.iov_len;
VOP_LOCK(vnd->sc_vp);
error = VOP_READ(vnd->sc_vp, &auio, 0, vnd->sc_cred);
VOP_UNLOCK(vnd->sc_vp);
free(tmpbuf, M_TEMP);
return (error);