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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
Download Patch File Download Diff File Expand all files Collapse all files
net/netlabel/netlabel_domainhash.c
+3 -3
View File
@@ -282,7 +282,7 @@ int __init netlbl_domhsh_init(u32 size)
INIT_LIST_HEAD(&hsh_tbl->tbl[iter]);
spin_lock(&netlbl_domhsh_lock);
rcu_assign_pointer(netlbl_domhsh, hsh_tbl);
RCU_INIT_POINTER(netlbl_domhsh, hsh_tbl);
spin_unlock(&netlbl_domhsh_lock);
return 0;
@@ -330,7 +330,7 @@ int netlbl_domhsh_add(struct netlbl_dom_map *entry,
&rcu_dereference(netlbl_domhsh)->tbl[bkt]);
} else {
INIT_LIST_HEAD(&entry->list);
rcu_assign_pointer(netlbl_domhsh_def, entry);
RCU_INIT_POINTER(netlbl_domhsh_def, entry);
}
if (entry->type == NETLBL_NLTYPE_ADDRSELECT) {
@@ -451,7 +451,7 @@ int netlbl_domhsh_remove_entry(struct netlbl_dom_map *entry,
if (entry != rcu_dereference(netlbl_domhsh_def))
list_del_rcu(&entry->list);
else
rcu_assign_pointer(netlbl_domhsh_def, NULL);
RCU_INIT_POINTER(netlbl_domhsh_def, NULL);
} else
ret_val = -ENOENT;
spin_unlock(&netlbl_domhsh_lock);
net/netlabel/netlabel_unlabeled.c
+3 -3
View File
@@ -354,7 +354,7 @@ static struct netlbl_unlhsh_iface *netlbl_unlhsh_add_iface(int ifindex)
INIT_LIST_HEAD(&iface->list);
if (netlbl_unlhsh_rcu_deref(netlbl_unlhsh_def) != NULL)
goto add_iface_failure;
rcu_assign_pointer(netlbl_unlhsh_def, iface);
RCU_INIT_POINTER(netlbl_unlhsh_def, iface);
}
spin_unlock(&netlbl_unlhsh_lock);
@@ -621,7 +621,7 @@ static void netlbl_unlhsh_condremove_iface(struct netlbl_unlhsh_iface *iface)
if (iface->ifindex > 0)
list_del_rcu(&iface->list);
else
rcu_assign_pointer(netlbl_unlhsh_def, NULL);
RCU_INIT_POINTER(netlbl_unlhsh_def, NULL);
spin_unlock(&netlbl_unlhsh_lock);
call_rcu(&iface->rcu, netlbl_unlhsh_free_iface);
@@ -1449,7 +1449,7 @@ int __init netlbl_unlabel_init(u32 size)
rcu_read_lock();
spin_lock(&netlbl_unlhsh_lock);
rcu_assign_pointer(netlbl_unlhsh, hsh_tbl);
RCU_INIT_POINTER(netlbl_unlhsh, hsh_tbl);
spin_unlock(&netlbl_unlhsh_lock);
rcu_read_unlock();