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authorEric W. Biederman <ebiederm@xmission.com>2014-03-27 15:36:38 -0700
committerDavid S. Miller <davem@davemloft.net>2014-03-29 17:58:37 -0400
commita8779ec1c5e60548b7b661a8d74a8cecf7775690 (patch)
tree26c3e8d991b42c16f48c99e4f9fd117233ae8b21 /net/bridge
parent3f705f73a0ab345321ef6e5a293c04bf7e9df818 (diff)
netpoll: Remove gfp parameter from __netpoll_setup
The gfp parameter was added in: commit 47be03a28cc6c80e3aa2b3e8ed6d960ff0c5c0af Author: Amerigo Wang <amwang@redhat.com> Date: Fri Aug 10 01:24:37 2012 +0000 netpoll: use GFP_ATOMIC in slave_enable_netpoll() and __netpoll_setup() slave_enable_netpoll() and __netpoll_setup() may be called with read_lock() held, so should use GFP_ATOMIC to allocate memory. Eric suggested to pass gfp flags to __netpoll_setup(). Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: "David S. Miller" <davem@davemloft.net> Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Cong Wang <amwang@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net> The reason for the gfp parameter was removed in: commit c4cdef9b7183159c23c7302aaf270d64c549f557 Author: dingtianhong <dingtianhong@huawei.com> Date: Tue Jul 23 15:25:27 2013 +0800 bonding: don't call slave_xxx_netpoll under spinlocks The slave_xxx_netpoll will call synchronize_rcu_bh(), so the function may schedule and sleep, it should't be called under spinlocks. bond_netpoll_setup() and bond_netpoll_cleanup() are always protected by rtnl lock, it is no need to take the read lock, as the slave list couldn't be changed outside rtnl lock. Signed-off-by: Ding Tianhong <dingtianhong@huawei.com> Cc: Jay Vosburgh <fubar@us.ibm.com> Cc: Andy Gospodarek <andy@greyhouse.net> Signed-off-by: David S. Miller <davem@davemloft.net> Nothing else that calls __netpoll_setup or ndo_netpoll_setup requires a gfp paramter, so remove the gfp parameter from both of these functions making the code clearer. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/bridge')
-rw-r--r--net/bridge/br_device.c15
-rw-r--r--net/bridge/br_if.c2
-rw-r--r--net/bridge/br_private.h4
3 files changed, 10 insertions, 11 deletions
diff --git a/net/bridge/br_device.c b/net/bridge/br_device.c
index f2a08477e0f5..0dd01a05bd59 100644
--- a/net/bridge/br_device.c
+++ b/net/bridge/br_device.c
@@ -218,16 +218,16 @@ static void br_netpoll_cleanup(struct net_device *dev)
br_netpoll_disable(p);
}
-static int __br_netpoll_enable(struct net_bridge_port *p, gfp_t gfp)
+static int __br_netpoll_enable(struct net_bridge_port *p)
{
struct netpoll *np;
int err;
- np = kzalloc(sizeof(*p->np), gfp);
+ np = kzalloc(sizeof(*p->np), GFP_KERNEL);
if (!np)
return -ENOMEM;
- err = __netpoll_setup(np, p->dev, gfp);
+ err = __netpoll_setup(np, p->dev);
if (err) {
kfree(np);
return err;
@@ -237,16 +237,15 @@ static int __br_netpoll_enable(struct net_bridge_port *p, gfp_t gfp)
return err;
}
-int br_netpoll_enable(struct net_bridge_port *p, gfp_t gfp)
+int br_netpoll_enable(struct net_bridge_port *p)
{
if (!p->br->dev->npinfo)
return 0;
- return __br_netpoll_enable(p, gfp);
+ return __br_netpoll_enable(p);
}
-static int br_netpoll_setup(struct net_device *dev, struct netpoll_info *ni,
- gfp_t gfp)
+static int br_netpoll_setup(struct net_device *dev, struct netpoll_info *ni)
{
struct net_bridge *br = netdev_priv(dev);
struct net_bridge_port *p;
@@ -255,7 +254,7 @@ static int br_netpoll_setup(struct net_device *dev, struct netpoll_info *ni,
list_for_each_entry(p, &br->port_list, list) {
if (!p->dev)
continue;
- err = __br_netpoll_enable(p, gfp);
+ err = __br_netpoll_enable(p);
if (err)
goto fail;
}
diff --git a/net/bridge/br_if.c b/net/bridge/br_if.c
index 54d207d3a31c..5262b8617eb9 100644
--- a/net/bridge/br_if.c
+++ b/net/bridge/br_if.c
@@ -366,7 +366,7 @@ int br_add_if(struct net_bridge *br, struct net_device *dev)
if (err)
goto err2;
- err = br_netpoll_enable(p, GFP_KERNEL);
+ err = br_netpoll_enable(p);
if (err)
goto err3;
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index e1ca1dc916a4..06811d79f89f 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -349,7 +349,7 @@ static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
netpoll_send_skb(np, skb);
}
-int br_netpoll_enable(struct net_bridge_port *p, gfp_t gfp);
+int br_netpoll_enable(struct net_bridge_port *p);
void br_netpoll_disable(struct net_bridge_port *p);
#else
static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
@@ -357,7 +357,7 @@ static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
{
}
-static inline int br_netpoll_enable(struct net_bridge_port *p, gfp_t gfp)
+static inline int br_netpoll_enable(struct net_bridge_port *p)
{
return 0;
}