From: Eric Dumazet <[email protected]> Date: Fri, 08 Jul 2016 05:18:24 +0200
> From: Eric Dumazet <[email protected]> > > inet_forward_change() runs with RTNL held. > We are allowed to sleep if required. > > If we use __in_dev_get_rtnl() instead of __in_dev_get_rcu(), > we no longer have to use GFP_ATOMIC allocations in > inet_netconf_notify_devconf(), meaning we are less likely to miss > notifications under memory pressure, and wont touch precious memory > reserves either and risk dropping incoming packets. > > inet_netconf_get_devconf() can also use GFP_KERNEL allocation. > > Fixes: edc9e748934c ("rtnl/ipv4: use netconf msg to advertise forwarding > status") > Fixes: 9e5511106f99 ("rtnl/ipv4: add support of RTM_GETNETCONF") > Signed-off-by: Eric Dumazet <[email protected]> > Cc: Nicolas Dichtel <[email protected]> Applied.
