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Correct permissions on vmapbuf'ed pages. A read from a device is a write to

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memory, and vice versa.
This commit is contained in:
bjh21 2001-06-02 10:44:02 +00:00
parent 40033835d8
commit 3df8e425e7
1 changed files with 4 additions and 4 deletions
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8
sys/arch/arm26/arm26/vm_machdep.c
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@ -1,4 +1,4 @@
/* $NetBSD: vm_machdep.c,v 1.15 2001/04/24 04:30:53 thorpej Exp $ */
/* $NetBSD: vm_machdep.c,v 1.16 2001/06/02 10:44:02 bjh21 Exp $ */
/*-
* Copyright (c) 2000, 2001 Ben Harris
@ -66,7 +66,7 @@
#include <sys/param.h>
__RCSID("$NetBSD: vm_machdep.c,v 1.15 2001/04/24 04:30:53 thorpej Exp $");
__RCSID("$NetBSD: vm_machdep.c,v 1.16 2001/06/02 10:44:02 bjh21 Exp $");
#include <sys/buf.h>
#include <sys/mount.h> /* XXX syscallargs.h uses fhandle_t and fsid_t */
@ -192,8 +192,8 @@ vmapbuf(struct buf *bp, vsize_t len)
taddr = uvm_km_valloc_wait(phys_map, len);
bp->b_data = (caddr_t)(taddr + off);
len = atop(len);
prot = bp->b_flags & B_READ ? VM_PROT_READ :
VM_PROT_READ | VM_PROT_WRITE;
prot = bp->b_flags & B_READ ? VM_PROT_READ | VM_PROT_WRITE :
VM_PROT_READ;
while (len--) {
if (pmap_extract(vm_map_pmap(&p->p_vmspace->vm_map), faddr,
&pa) == FALSE)