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rcu: convert uses of rcu_assign_pointer(x, NULL) to RCU_INIT_POINTER

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When assigning a NULL value to an RCU protected pointer, no barrier
is needed. The rcu_assign_pointer, used to handle that but will soon
change to not handle the special case.

Convert all rcu_assign_pointer of NULL value.

//smpl
@@ expression P; @@

- rcu_assign_pointer(P, NULL)
+ RCU_INIT_POINTER(P, NULL)

// </smpl>

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stephen Hemminger
2011-08-01 16:19:00 +00:00
committed by David S. Miller
parent 76f793e3a4
commit a9b3cd7f32
55 changed files with 193 additions and 193 deletions
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6
net/phonet/socket.c
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@@ -679,7 +679,7 @@ int pn_sock_bind_res(struct sock *sk, u8 res)
mutex_lock(&resource_mutex);
if (pnres.sk[res] == NULL) {
sock_hold(sk);
rcu_assign_pointer(pnres.sk[res], sk);
RCU_INIT_POINTER(pnres.sk[res], sk);
ret = 0;
}
mutex_unlock(&resource_mutex);
@@ -695,7 +695,7 @@ int pn_sock_unbind_res(struct sock *sk, u8 res)
mutex_lock(&resource_mutex);
if (pnres.sk[res] == sk) {
rcu_assign_pointer(pnres.sk[res], NULL);
RCU_INIT_POINTER(pnres.sk[res], NULL);
ret = 0;
}
mutex_unlock(&resource_mutex);
@@ -714,7 +714,7 @@ void pn_sock_unbind_all_res(struct sock *sk)
mutex_lock(&resource_mutex);
for (res = 0; res < 256; res++) {
if (pnres.sk[res] == sk) {
rcu_assign_pointer(pnres.sk[res], NULL);
RCU_INIT_POINTER(pnres.sk[res], NULL);
match++;
}
}