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| author | Eric Dumazet <[email protected]> | 2016-07-08 05:18:24 +0200 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2016-07-09 18:12:25 -0400 |
| commit | fa17806cde76fb1087532f07e72aa757a30e0500 (patch) | |
| tree | 89493cdb11e72b554373adfa2de627407ef908e1 /tools/perf/scripts/python/futex-contention.py | |
| parent | db9a1ba55a94b87d1ccbcdb74a35307f7a40aa9b (diff) | |
ipv4: do not abuse GFP_ATOMIC in inet_netconf_notify_devconf()
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]>
Acked-by: Nicolas Dichtel <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/futex-contention.py')
0 files changed, 0 insertions, 0 deletions