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authorPatrick McHardy <kaber@trash.net>2008-04-24 09:10:48 +0400
committerDavid S. Miller <davem@davemloft.net>2008-04-24 09:10:48 +0400
commitc9c1014b2bd014c7ec037bbb6f58818162fdb265 (patch)
treedeace0019cbe1600d94e0de85791faa5eb14358e /include/linux/rtnetlink.h
parent6440be177f56e0b52dd81df82b78875d9a07d5f9 (diff)
downloadlinux-c9c1014b2bd014c7ec037bbb6f58818162fdb265.tar.xz
[RTNETLINK]: Fix bogus ASSERT_RTNL warning
ASSERT_RTNL uses mutex_trylock to test whether the rtnl_mutex is held. This bogus warnings when running in atomic context, which f.e. happens when adding secondary unicast addresses through macvlan or vlan or when synchronizing multicast addresses from wireless devices. Mid-term we might want to consider moving all address updates to process context since the locking seems overly complicated, for now just fix the bogus warning by changing ASSERT_RTNL to use mutex_is_locked(). Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/rtnetlink.h')
-rw-r--r--include/linux/rtnetlink.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/rtnetlink.h b/include/linux/rtnetlink.h
index b9e174079002..44c81c744538 100644
--- a/include/linux/rtnetlink.h
+++ b/include/linux/rtnetlink.h
@@ -740,13 +740,13 @@ extern void rtmsg_ifinfo(int type, struct net_device *dev, unsigned change);
extern void rtnl_lock(void);
extern void rtnl_unlock(void);
extern int rtnl_trylock(void);
+extern int rtnl_is_locked(void);
extern void rtnetlink_init(void);
extern void __rtnl_unlock(void);
#define ASSERT_RTNL() do { \
- if (unlikely(rtnl_trylock())) { \
- rtnl_unlock(); \
+ if (unlikely(!rtnl_is_locked())) { \
printk(KERN_ERR "RTNL: assertion failed at %s (%d)\n", \
__FILE__, __LINE__); \
dump_stack(); \