vma.c (955db39676b6de84283b370d03683171b67dceb3) vma.c (2f1c6611b0a89afcb8641471af5f223c9caa01e0)
1// SPDX-License-Identifier: GPL-2.0-or-later
2
3#include <stdbool.h>
4#include <stdio.h>
5#include <stdlib.h>
6
7#include "maple-shared.h"
8#include "vma_internal.h"

--- 8 unchanged lines hidden (view full) ---

17 (fail_prealloc ? -ENOMEM : mas_preallocate(&(vmi)->mas, (vma), GFP_KERNEL))
18
19/*
20 * Directly import the VMA implementation here. Our vma_internal.h wrapper
21 * provides userland-equivalent functionality for everything vma.c uses.
22 */
23#include "../../../mm/vma.c"
24
1// SPDX-License-Identifier: GPL-2.0-or-later
2
3#include <stdbool.h>
4#include <stdio.h>
5#include <stdlib.h>
6
7#include "maple-shared.h"
8#include "vma_internal.h"

--- 8 unchanged lines hidden (view full) ---

17 (fail_prealloc ? -ENOMEM : mas_preallocate(&(vmi)->mas, (vma), GFP_KERNEL))
18
19/*
20 * Directly import the VMA implementation here. Our vma_internal.h wrapper
21 * provides userland-equivalent functionality for everything vma.c uses.
22 */
23#include "../../../mm/vma.c"
24
25/*
26 * Temporarily forward-ported from a future in which vmg's are used for merging.
27 */
28struct vma_merge_struct {
29 struct mm_struct *mm;
30 struct vma_iterator *vmi;
31 pgoff_t pgoff;
32 struct vm_area_struct *prev;
33 struct vm_area_struct *next; /* Modified by vma_merge(). */
34 struct vm_area_struct *vma; /* Either a new VMA or the one being modified. */
35 unsigned long start;
36 unsigned long end;
37 unsigned long flags;
38 struct file *file;
39 struct anon_vma *anon_vma;
40 struct mempolicy *policy;
41 struct vm_userfaultfd_ctx uffd_ctx;
42 struct anon_vma_name *anon_name;
43};
44
45const struct vm_operations_struct vma_dummy_vm_ops;
46static struct anon_vma dummy_anon_vma;
47
48#define ASSERT_TRUE(_expr) \
49 do { \
50 if (!(_expr)) { \
51 fprintf(stderr, \
52 "Assert FAILED at %s:%d:%s(): %s is FALSE.\n", \

--- 57 unchanged lines hidden (view full) ---

110 vma->vm_lock_seq = -1;
111
112 return vma;
113}
114
115/* Helper function which provides a wrapper around a merge new VMA operation. */
116static struct vm_area_struct *merge_new(struct vma_merge_struct *vmg)
117{
25const struct vm_operations_struct vma_dummy_vm_ops;
26static struct anon_vma dummy_anon_vma;
27
28#define ASSERT_TRUE(_expr) \
29 do { \
30 if (!(_expr)) { \
31 fprintf(stderr, \
32 "Assert FAILED at %s:%d:%s(): %s is FALSE.\n", \

--- 57 unchanged lines hidden (view full) ---

90 vma->vm_lock_seq = -1;
91
92 return vma;
93}
94
95/* Helper function which provides a wrapper around a merge new VMA operation. */
96static struct vm_area_struct *merge_new(struct vma_merge_struct *vmg)
97{
118 /* vma_merge() needs a VMA to determine mm, anon_vma, and file. */
119 struct vm_area_struct dummy = {
120 .vm_mm = vmg->mm,
121 .vm_flags = vmg->flags,
122 .anon_vma = vmg->anon_vma,
123 .vm_file = vmg->file,
124 };
125
126 /*
127 * For convenience, get prev and next VMAs. Which the new VMA operation
128 * requires.
129 */
130 vmg->next = vma_next(vmg->vmi);
131 vmg->prev = vma_prev(vmg->vmi);
132
133 vma_iter_set(vmg->vmi, vmg->start);
98 /*
99 * For convenience, get prev and next VMAs. Which the new VMA operation
100 * requires.
101 */
102 vmg->next = vma_next(vmg->vmi);
103 vmg->prev = vma_prev(vmg->vmi);
104
105 vma_iter_set(vmg->vmi, vmg->start);
134 return vma_merge_new_vma(vmg->vmi, vmg->prev, &dummy, vmg->start,
135 vmg->end, vmg->pgoff);
106 return vma_merge(vmg);
136}
137
138/*
139 * Helper function which provides a wrapper around a merge existing VMA
140 * operation.
141 */
142static struct vm_area_struct *merge_existing(struct vma_merge_struct *vmg)
143{
107}
108
109/*
110 * Helper function which provides a wrapper around a merge existing VMA
111 * operation.
112 */
113static struct vm_area_struct *merge_existing(struct vma_merge_struct *vmg)
114{
144 /* vma_merge() needs a VMA to determine mm, anon_vma, and file. */
145 struct vm_area_struct dummy = {
146 .vm_mm = vmg->mm,
147 .vm_flags = vmg->flags,
148 .anon_vma = vmg->anon_vma,
149 .vm_file = vmg->file,
150 };
151
152 return vma_merge(vmg->vmi, vmg->prev, &dummy, vmg->start, vmg->end,
153 vmg->flags, vmg->pgoff, vmg->policy, vmg->uffd_ctx,
154 vmg->anon_name);
115 return vma_merge(vmg);
155}
156
157/*
158 * Helper function which provides a wrapper around the expansion of an existing
159 * VMA.
160 */
161static int expand_existing(struct vma_merge_struct *vmg)
162{

--- 1317 unchanged lines hidden --- 		116}
117
118/*
119 * Helper function which provides a wrapper around the expansion of an existing
120 * VMA.
121 */
122static int expand_existing(struct vma_merge_struct *vmg)
123{

--- 1317 unchanged lines hidden ---