| 5e993f12 |
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 = { |
git.wh0rd.org / patches.git / blame