vm_unix.c (bb10bb497843aadbb454110fe2c8d645976ddf33) vm_unix.c (190609dd48b42678141934248d836da0c67471b1)
1/*
2 * Copyright (c) 1988 University of Utah.
3 * Copyright (c) 1991, 1993
4 * The Regents of the University of California. All rights reserved.
5 *
6 * This code is derived from software contributed to Berkeley by
7 * the Systems Programming Group of the University of Utah Computer
8 * Science Department.

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39 *
40 * @(#)vm_unix.c 8.1 (Berkeley) 6/11/93
41 * $FreeBSD$
42 */
43
44/*
45 * Traditional sbrk/grow interface to VM
46 */
1/*
2 * Copyright (c) 1988 University of Utah.
3 * Copyright (c) 1991, 1993
4 * The Regents of the University of California. All rights reserved.
5 *
6 * This code is derived from software contributed to Berkeley by
7 * the Systems Programming Group of the University of Utah Computer
8 * Science Department.

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39 *
40 * @(#)vm_unix.c 8.1 (Berkeley) 6/11/93
41 * $FreeBSD$
42 */
43
44/*
45 * Traditional sbrk/grow interface to VM
46 */
47#include "opt_bleed.h"
48
47#include <sys/param.h>
48#include <sys/lock.h>
49#include <sys/mutex.h>
50#include <sys/proc.h>
51#include <sys/resourcevar.h>
52#include <sys/sysproto.h>
53#include <sys/systm.h>
54

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94 */
95 return EINVAL;
96 }
97
98 if (new > old) {
99 vm_size_t diff;
100
101 diff = new - old;
49#include <sys/param.h>
50#include <sys/lock.h>
51#include <sys/mutex.h>
52#include <sys/proc.h>
53#include <sys/resourcevar.h>
54#include <sys/sysproto.h>
55#include <sys/systm.h>
56

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96 */
97 return EINVAL;
98 }
99
100 if (new > old) {
101 vm_size_t diff;
102
103 diff = new - old;
104#ifndef BLEED
105 mtx_lock(&Giant);
106#endif
102 mtx_lock(&vm_mtx);
103 rv = vm_map_find(&vm->vm_map, NULL, 0, &old, diff, FALSE,
104 VM_PROT_ALL, VM_PROT_ALL, 0);
105 if (rv != KERN_SUCCESS) {
106 mtx_unlock(&vm_mtx);
107 return (ENOMEM);
108 }
109 vm->vm_dsize += btoc(diff);
110 mtx_unlock(&vm_mtx);
107 mtx_lock(&vm_mtx);
108 rv = vm_map_find(&vm->vm_map, NULL, 0, &old, diff, FALSE,
109 VM_PROT_ALL, VM_PROT_ALL, 0);
110 if (rv != KERN_SUCCESS) {
111 mtx_unlock(&vm_mtx);
112 return (ENOMEM);
113 }
114 vm->vm_dsize += btoc(diff);
115 mtx_unlock(&vm_mtx);
116#ifndef BLEED
117 mtx_unlock(&Giant);
118#endif
111 } else if (new < old) {
112 mtx_lock(&Giant);
113 mtx_lock(&vm_mtx);
114 rv = vm_map_remove(&vm->vm_map, new, old);
115 if (rv != KERN_SUCCESS) {
116 mtx_unlock(&vm_mtx);
117 mtx_unlock(&Giant);
118 return (ENOMEM);

--- 23 unchanged lines hidden --- 		119 } else if (new < old) {
120 mtx_lock(&Giant);
121 mtx_lock(&vm_mtx);
122 rv = vm_map_remove(&vm->vm_map, new, old);
123 if (rv != KERN_SUCCESS) {
124 mtx_unlock(&vm_mtx);
125 mtx_unlock(&Giant);
126 return (ENOMEM);

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