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Require the bdirty() be called at splbio() and with the buffer interlock held. 

This is essentially just a helper routine called from biodone() through
ffs softdep's I/O completion, to re-queue the buffer.
This commit is contained in:
pk 2003-02-06 09:46:46 +00:00
parent eb9c846694
commit 408ae56abd
1 changed files with 5 additions and 9 deletions
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14
sys/kern/vfs_bio.c
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@ -1,4 +1,4 @@
/* $NetBSD: vfs_bio.c,v 1.87 2003/02/05 21:38:42 pk Exp $ */ /* $NetBSD: vfs_bio.c,v 1.88 2003/02/06 09:46:46 pk Exp $ */
/*- /*-
* Copyright (c) 1994 Christopher G. Demetriou * Copyright (c) 1994 Christopher G. Demetriou
@ -51,7 +51,7 @@
#include "opt_softdep.h" #include "opt_softdep.h"
#include <sys/cdefs.h> #include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: vfs_bio.c,v 1.87 2003/02/05 21:38:42 pk Exp $"); __KERNEL_RCSID(0, "$NetBSD: vfs_bio.c,v 1.88 2003/02/06 09:46:46 pk Exp $");
#include <sys/param.h> #include <sys/param.h>
#include <sys/systm.h> #include <sys/systm.h>
@ -476,6 +476,8 @@ bawrite(bp)
/* /*
* Same as first half of bdwrite, mark buffer dirty, but do not release it. * Same as first half of bdwrite, mark buffer dirty, but do not release it.
* Call at splbio() and with the buffer interlock locked.
* Note: called only from biodone() through ffs softdep's bioops.io_complete()
*/ */
void void
bdirty(bp) bdirty(bp)
@ -483,12 +485,9 @@ bdirty(bp)
{ {
struct lwp *l = (curlwp != NULL ? curlwp : &lwp0); /* XXX */ struct lwp *l = (curlwp != NULL ? curlwp : &lwp0); /* XXX */
struct proc *p = l->l_proc; struct proc *p = l->l_proc;
int s;
KASSERT(ISSET(bp->b_flags, B_BUSY)); KASSERT(ISSET(bp->b_flags, B_BUSY));
LOCK_ASSERT(simple_lock_held(&bp->b_interlock));
s = splbio();
simple_lock(&bp->b_interlock);
CLR(bp->b_flags, B_AGE); CLR(bp->b_flags, B_AGE);
@ -497,9 +496,6 @@ bdirty(bp)
p->p_stats->p_ru.ru_oublock++; p->p_stats->p_ru.ru_oublock++;
reassignbuf(bp, bp->b_vp); reassignbuf(bp, bp->b_vp);
} }
simple_unlock(&bp->b_interlock);
splx(s);
} }
/* /*