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Commit | Line | Data |
---|---|---|
1 | --- fs/proc/task_nommu.c | |
2 | +++ fs/proc/task_nommu.c.old | |
3 | @@ -145,6 +145,8 @@ | |
4 | seq_printf(m, "%*c", len, ' '); | |
5 | } | |
6 | ||
7 | +#define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s:%i: " fmt "\n", __FUNCTION__, __LINE__, ## args) | |
8 | + | |
9 | static int show_map(struct seq_file *m, void *v) | |
10 | { | |
11 | struct vm_list_struct *vml = v; | |
12 | @@ -157,6 +159,8 @@ | |
13 | dev_t dev = 0; | |
14 | int len; | |
15 | ||
16 | +DPRINTK("!!! BOOYA"); | |
17 | + | |
18 | if (file) { | |
19 | struct inode *inode = vma->vm_file->f_dentry->d_inode; | |
20 | dev = inode->i_sb->s_dev; | |
21 | @@ -209,12 +213,15 @@ | |
22 | struct mm_struct *mm; | |
23 | struct vm_list_struct *vml; | |
24 | loff_t l = *pos; | |
25 | +DPRINTK("!!! BOOYA l=%i", (int)l); | |
26 | ||
27 | mm = get_task_mm(task); | |
28 | if (!mm) | |
29 | return NULL; | |
30 | ||
31 | +DPRINTK("!!! BOOYA down_read(sem)"); | |
32 | down_read(&mm->mmap_sem); | |
33 | +DPRINTK("!!! BOOYA"); | |
34 | ||
35 | /* | |
36 | * Check the vml index is within the range and do | |
37 | @@ -228,38 +235,57 @@ | |
38 | } | |
39 | ||
40 | if (vml) | |
41 | +{ | |
42 | +DPRINTK("!!! BOOYA <-- exit"); | |
43 | return vml; | |
44 | +} | |
45 | ||
46 | /* End of vmls has been reached */ | |
47 | +DPRINTK("!!! BOOYA up_read(sem)"); | |
48 | up_read(&mm->mmap_sem); | |
49 | +DPRINTK("!!! BOOYA mmput(mm)"); | |
50 | mmput(mm); | |
51 | ||
52 | +DPRINTK("!!! BOOYA <-- exit"); | |
53 | return NULL; | |
54 | } | |
55 | static void m_stop(struct seq_file *m, void *v) | |
56 | { | |
57 | struct task_struct *task = m->private; | |
58 | struct mm_struct *mm; | |
59 | +DPRINTK("!!! BOOYA --> enter"); | |
60 | ||
61 | if (!v) | |
62 | return; | |
63 | ||
64 | mm = get_task_mm(task); | |
65 | if (!mm) | |
66 | +{ | |
67 | +DPRINTK("!!! BOOYA <-- exit"); | |
68 | return; | |
69 | +} | |
70 | ||
71 | +DPRINTK("!!! BOOYA up_read(sem)"); | |
72 | up_read(&mm->mmap_sem); | |
73 | +DPRINTK("!!! BOOYA mmput(mm)"); | |
74 | mmput(mm); | |
75 | +DPRINTK("!!! BOOYA <-- exit"); | |
76 | } | |
77 | static void *m_next(struct seq_file *m, void *v, loff_t *pos) | |
78 | { | |
79 | struct vm_list_struct *vml = v; | |
80 | +DPRINTK("!!! BOOYA"); | |
81 | ||
82 | (*pos)++; | |
83 | if (vml && vml->next) | |
84 | +{ | |
85 | +DPRINTK("!!! BOOYA"); | |
86 | return vml->next; | |
87 | +} | |
88 | ||
89 | +DPRINTK("!!! BOOYA"); | |
90 | m_stop(m, vml); | |
91 | +DPRINTK("!!! BOOYA"); | |
92 | return NULL; | |
93 | } | |
94 | struct seq_operations proc_pid_maps_op = { |