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| author |   Vlad Buslov <vladbu@mellanox.com> | 2018-09-24 19:22:54 +0300 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-09-25 20:17:36 -0700 |
| commit | cfebd7e242d7193a9901222b3e667788810d98c1 (patch) | |
| tree | f7b045d12317526af5a5258266af33b5616387ab /LICENSES | |
| parent | net: sched: use Qdisc rcu API instead of relying on rtnl lock (diff) | |
| download | linux-dev-cfebd7e242d7193a9901222b3e667788810d98c1.tar.xz linux-dev-cfebd7e242d7193a9901222b3e667788810d98c1.zip | |
net: sched: change tcf block reference counter type to refcount_t
As a preparation for removing rtnl lock dependency from rules update path,
change tcf block reference counter type to refcount_t to allow modification
by concurrent users.
In block put function perform decrement and check reference counter once to
accommodate concurrent modification by unlocked users. After this change
tcf_chain_put at the end of block put function is called with
block->refcnt==0 and will deallocate block after the last chain is
released, so there is no need to manually deallocate block in this case.
However, if block reference counter reached 0 and there are no chains to
release, block must still be deallocated manually.
Signed-off-by: Vlad Buslov <vladbu@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'LICENSES')
0 files changed, 0 insertions, 0 deletions