On Wed, 2 Jul 2008 11:54:09 +0300 Eli Cohen <[EMAIL PROTECTED]> wrote:
> Hi, > > I have the need to change the MTU of IP over IB from the driver code > and not from the shell. Looking for the right way to do it I came > across the dev_set_mtu() which seems appropriate as it handles all > notifications too. However, it is not clear to me whether I have to > wrap the call to dev_set_mtu() with any locks. Specifically, I was > referred to a mail thread that suggests that I have to use > rtnl_lock()/rtnl_unlock(): > http://marc.info/?l=linux-netdev&m=121201324611292&w=2 > > With reference to the above URL, I would say that it is possible for > me to hit to the assertion ASSERT_RTNL() if I don't take rtnl_lock > prior to calling dev_set_mtu(). However I don't hit it, though I can't > count on that there will not be a case that any function registered > for notification would expect to see the lock acquired. > You need to call rtnl_lock() so device drivers get consistent locking. _______________________________________________ general mailing list [email protected] http://lists.openfabrics.org/cgi-bin/mailman/listinfo/general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
