2.6.24-rc7

 kernel

diff --git a/kernel/lockdep_proc.c b/kernel/lockdep_proc.c
index c851b2d..8a135bd 100644
--- a/kernel/lockdep_proc.c
+++ b/kernel/lockdep_proc.c
@@ -25,28 +25,38 @@
 
 static void *l_next(struct seq_file *m, void *v, loff_t *pos)
 {
-   struct lock_class *class = v;
+   struct lock_class *class;
 
    (*pos)++;
 
-   if (class->lock_entry.next != &all_lock_classes)
-      class = list_entry(class->lock_entry.next, struct lock_class,
-              lock_entry);
-   else
-      class = NULL;
-   m->private = class;
+   if (v == SEQ_START_TOKEN)
+      class = m->private;
+   else {
+      class = v;
+
+      if (class->lock_entry.next != &all_lock_classes)
+         class = list_entry(class->lock_entry.next,
+                  struct lock_class, lock_entry);
+      else
+         class = NULL;
+   }
 
    return class;
 }
 
 static void *l_start(struct seq_file *m, loff_t *pos)
 {
-   struct lock_class *class = m->private;
+   struct lock_class *class;
+   loff_t i = 0;
 
-   if (&class->lock_entry == all_lock_classes.next)
-      seq_printf(m, "all lock classes:\n");
+   if (*pos == 0)
+      return SEQ_START_TOKEN;
 
-   return class;
+   list_for_each_entry(class, &all_lock_classes, lock_entry) {
+      if (++i == *pos)
+      return class;
+   }
+   return NULL;
 }
 
 static void l_stop(struct seq_file *m, void *v)
@@ -101,10 +111,15 @@ static void print_name(struct seq_file *m, struct lock_class *class)
 static int l_show(struct seq_file *m, void *v)
 {
    unsigned long nr_forward_deps, nr_backward_deps;
-   struct lock_class *class = m->private;
+   struct lock_class *class = v;
    struct lock_list *entry;
    char c1, c2, c3, c4;
 
+   if (v == SEQ_START_TOKEN) {
+      seq_printf(m, "all lock classes:\n");
+      return 0;
+   }
+
    seq_printf(m, "%p", class->key);
 #ifdef CONFIG_DEBUG_LOCKDEP
    seq_printf(m, " OPS:%8ld", class->ops);
@@ -523,10 +538,11 @@ static void *ls_start(struct seq_file *m, loff_t *pos)
 {
    struct lock_stat_seq *data = m->private;
 
-   if (data->iter == data->stats)
-      seq_header(m);
+   if (*pos == 0)
+      return SEQ_START_TOKEN;
 
-   if (data->iter == data->iter_end)
+   data->iter = data->stats + *pos;
+   if (data->iter >= data->iter_end)
       data->iter = NULL;
 
    return data->iter;
@@ -538,8 +554,13 @@ static void *ls_next(struct seq_file *m, void *v, loff_t *pos)
 
    (*pos)++;
 
-   data->iter = v;
-   data->iter++;
+   if (v == SEQ_START_TOKEN)
+      data->iter = data->stats;
+   else {
+      data->iter = v;
+      data->iter++;
+   }
+
    if (data->iter == data->iter_end)
       data->iter = NULL;
 
@@ -552,9 +573,11 @@ static void ls_stop(struct seq_file *m, void *v)
 
 static int ls_show(struct seq_file *m, void *v)
 {
-   struct lock_stat_seq *data = m->private;
+   if (v == SEQ_START_TOKEN)
+      seq_header(m);
+   else
+      seq_stats(m, v);
 
-   seq_stats(m, data->iter);
    return 0;
 }