diff options
| author |   Sven Eckelmann <sven@narfation.org> | 2011-05-03 13:10:06 +0200 |
|---|---|---|
| committer | Sven Eckelmann <sven@narfation.org> | 2011-05-08 16:10:42 +0200 |
| commit | 3a4375a9f0080e6ae40af63e2e2c1e70a6dcb775 (patch) | |
| tree | a3448104babf921c217a1e94c2e46d5bd7613a2d /Documentation | |
| parent | batman-adv: Remove unnecessary hardif_list_lock (diff) | |
| download | linux-dev-3a4375a9f0080e6ae40af63e2e2c1e70a6dcb775.tar.xz linux-dev-3a4375a9f0080e6ae40af63e2e2c1e70a6dcb775.zip | |
batman-adv: Avoid deadlock between rtnl_lock and s_active
The hard_if_event is called by the notifier with rtnl_lock and tries to
remove sysfs entries when a NETDEV_UNREGISTER event is received. This
will automatically take the s_active lock.
The s_active lock is also used when a new interface is added to a meshif
through sysfs. In that situation we cannot wait for the rntl_lock before
creating the actual batman-adv interface to prevent a deadlock. It is
still possible to try to get the rtnl_lock and immediately abort the
current operation when the trylock call failed.
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Diffstat (limited to 'Documentation')
0 files changed, 0 insertions, 0 deletions