1
2
3
4
5
6
7
8
9#include <linux/module.h>
10#include <linux/list.h>
11
12
13
14
15
16
17
18
19void __list_add(struct list_head *new,
20 struct list_head *prev,
21 struct list_head *next)
22{
23 WARN(next->prev != prev,
24 "list_add corruption. next->prev should be "
25 "prev (%p), but was %p. (next=%p).\n",
26 prev, next->prev, next);
27 WARN(prev->next != next,
28 "list_add corruption. prev->next should be "
29 "next (%p), but was %p. (prev=%p).\n",
30 next, prev->next, prev);
31 next->prev = new;
32 new->next = next;
33 new->prev = prev;
34 prev->next = new;
35}
36EXPORT_SYMBOL(__list_add);
37
38
39
40
41
42
43
44void list_del(struct list_head *entry)
45{
46 WARN(entry->prev->next != entry,
47 "list_del corruption. prev->next should be %p, "
48 "but was %p\n", entry, entry->prev->next);
49 WARN(entry->next->prev != entry,
50 "list_del corruption. next->prev should be %p, "
51 "but was %p\n", entry, entry->next->prev);
52 __list_del(entry->prev, entry->next);
53 entry->next = LIST_POISON1;
54 entry->prev = LIST_POISON2;
55}
56EXPORT_SYMBOL(list_del);
57