kprobes: add (un)register_kretprobes for batch registration

[safe/jmp/linux-2.6] / kernel / futex.c

diff --git a/kernel/futex.c b/kernel/futex.c
index 87a6428..e43945e 100644 (file)
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -281,7 +281,7 @@ static int get_futex_key(u32 __user *uaddr, struct rw_semaphore *fshared,
  */
 static void get_futex_key_refs(union futex_key *key)
 {
-       if (key->both.ptr == 0)
+       if (key->both.ptr == NULL)
                return;
        switch (key->both.offset & (FUT_OFF_INODE|FUT_OFF_MMSHARED)) {
                case FUT_OFF_INODE: