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-rw-r--r--fs/proc/nommu.c71
1 files changed, 32 insertions, 39 deletions
diff --git a/fs/proc/nommu.c b/fs/proc/nommu.c
index 3f87d263294..b446d7ad0b0 100644
--- a/fs/proc/nommu.c
+++ b/fs/proc/nommu.c
@@ -33,33 +33,33 @@
33#include "internal.h" 33#include "internal.h"
34 34
35/* 35/*
36 * display a single VMA to a sequenced file 36 * display a single region to a sequenced file
37 */ 37 */
38int nommu_vma_show(struct seq_file *m, struct vm_area_struct *vma) 38static int nommu_region_show(struct seq_file *m, struct vm_region *region)
39{ 39{
40 unsigned long ino = 0; 40 unsigned long ino = 0;
41 struct file *file; 41 struct file *file;
42 dev_t dev = 0; 42 dev_t dev = 0;
43 int flags, len; 43 int flags, len;
44 44
45 flags = vma->vm_flags; 45 flags = region->vm_flags;
46 file = vma->vm_file; 46 file = region->vm_file;
47 47
48 if (file) { 48 if (file) {
49 struct inode *inode = vma->vm_file->f_path.dentry->d_inode; 49 struct inode *inode = region->vm_file->f_path.dentry->d_inode;
50 dev = inode->i_sb->s_dev; 50 dev = inode->i_sb->s_dev;
51 ino = inode->i_ino; 51 ino = inode->i_ino;
52 } 52 }
53 53
54 seq_printf(m, 54 seq_printf(m,
55 "%08lx-%08lx %c%c%c%c %08llx %02x:%02x %lu %n", 55 "%08lx-%08lx %c%c%c%c %08llx %02x:%02x %lu %n",
56 vma->vm_start, 56 region->vm_start,
57 vma->vm_end, 57 region->vm_end,
58 flags & VM_READ ? 'r' : '-', 58 flags & VM_READ ? 'r' : '-',
59 flags & VM_WRITE ? 'w' : '-', 59 flags & VM_WRITE ? 'w' : '-',
60 flags & VM_EXEC ? 'x' : '-', 60 flags & VM_EXEC ? 'x' : '-',
61 flags & VM_MAYSHARE ? flags & VM_SHARED ? 'S' : 's' : 'p', 61 flags & VM_MAYSHARE ? flags & VM_SHARED ? 'S' : 's' : 'p',
62 ((loff_t)vma->vm_pgoff) << PAGE_SHIFT, 62 ((loff_t)region->vm_pgoff) << PAGE_SHIFT,
63 MAJOR(dev), MINOR(dev), ino, &len); 63 MAJOR(dev), MINOR(dev), ino, &len);
64 64
65 if (file) { 65 if (file) {
@@ -75,61 +75,54 @@ int nommu_vma_show(struct seq_file *m, struct vm_area_struct *vma)
75} 75}
76 76
77/* 77/*
78 * display a list of all the VMAs the kernel knows about 78 * display a list of all the REGIONs the kernel knows about
79 * - nommu kernals have a single flat list 79 * - nommu kernals have a single flat list
80 */ 80 */
81static int nommu_vma_list_show(struct seq_file *m, void *v) 81static int nommu_region_list_show(struct seq_file *m, void *_p)
82{ 82{
83 struct vm_area_struct *vma; 83 struct rb_node *p = _p;
84 84
85 vma = rb_entry((struct rb_node *) v, struct vm_area_struct, vm_rb); 85 return nommu_region_show(m, rb_entry(p, struct vm_region, vm_rb));
86 return nommu_vma_show(m, vma);
87} 86}
88 87
89static void *nommu_vma_list_start(struct seq_file *m, loff_t *_pos) 88static void *nommu_region_list_start(struct seq_file *m, loff_t *_pos)
90{ 89{
91 struct rb_node *_rb; 90 struct rb_node *p;
92 loff_t pos = *_pos; 91 loff_t pos = *_pos;
93 void *next = NULL;
94 92
95 down_read(&nommu_vma_sem); 93 down_read(&nommu_region_sem);
96 94
97 for (_rb = rb_first(&nommu_vma_tree); _rb; _rb = rb_next(_rb)) { 95 for (p = rb_first(&nommu_region_tree); p; p = rb_next(p))
98 if (pos == 0) { 96 if (pos-- == 0)
99 next = _rb; 97 return p;
100 break; 98 return NULL;
101 }
102 pos--;
103 }
104
105 return next;
106} 99}
107 100
108static void nommu_vma_list_stop(struct seq_file *m, void *v) 101static void nommu_region_list_stop(struct seq_file *m, void *v)
109{ 102{
110 up_read(&nommu_vma_sem); 103 up_read(&nommu_region_sem);
111} 104}
112 105
113static void *nommu_vma_list_next(struct seq_file *m, void *v, loff_t *pos) 106static void *nommu_region_list_next(struct seq_file *m, void *v, loff_t *pos)
114{ 107{
115 (*pos)++; 108 (*pos)++;
116 return rb_next((struct rb_node *) v); 109 return rb_next((struct rb_node *) v);
117} 110}
118 111
119static const struct seq_operations proc_nommu_vma_list_seqop = { 112static struct seq_operations proc_nommu_region_list_seqop = {
120 .start = nommu_vma_list_start, 113 .start = nommu_region_list_start,
121 .next = nommu_vma_list_next, 114 .next = nommu_region_list_next,
122 .stop = nommu_vma_list_stop, 115 .stop = nommu_region_list_stop,
123 .show = nommu_vma_list_show 116 .show = nommu_region_list_show
124}; 117};
125 118
126static int proc_nommu_vma_list_open(struct inode *inode, struct file *file) 119static int proc_nommu_region_list_open(struct inode *inode, struct file *file)
127{ 120{
128 return seq_open(file, &proc_nommu_vma_list_seqop); 121 return seq_open(file, &proc_nommu_region_list_seqop);
129} 122}
130 123
131static const struct file_operations proc_nommu_vma_list_operations = { 124static const struct file_operations proc_nommu_region_list_operations = {
132 .open = proc_nommu_vma_list_open, 125 .open = proc_nommu_region_list_open,
133 .read = seq_read, 126 .read = seq_read,
134 .llseek = seq_lseek, 127 .llseek = seq_lseek,
135 .release = seq_release, 128 .release = seq_release,
@@ -137,7 +130,7 @@ static const struct file_operations proc_nommu_vma_list_operations = {
137 130
138static int __init proc_nommu_init(void) 131static int __init proc_nommu_init(void)
139{ 132{
140 proc_create("maps", S_IRUGO, NULL, &proc_nommu_vma_list_operations); 133 proc_create("maps", S_IRUGO, NULL, &proc_nommu_region_list_operations);
141 return 0; 134 return 0;
142} 135}
143 136