net: add annotation for sock_{lock,unlock}_fast
The static checker is fooled by the non-static locking scheme
implemented by the mentioned helpers.
Let's make its life easier adding some unconditional annotation
so that the helpers are now interpreted as a plain spinlock from
sparse.
v1 -> v2:
- add __releases() annotation to unlock_sock_fast()
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Link: https://lore.kernel.org/r/6ed7ae627d8271fb7f20e0a9c6750fbba1ac2635.1605634911.git.pabeni@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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