From: Eric Dumazet
Date: Tue, 17 May 2016 17:44:05 -0700
> Four layers using TCP stack were assuming sk_callback_lock could
> be locked using read_lock() in their handlers because TCP stack
> was running with BH disabled.
>
> This is no longer the case. Since presumably the rest could
> also dep
Four layers using TCP stack were assuming sk_callback_lock could
be locked using read_lock() in their handlers because TCP stack
was running with BH disabled.
This is no longer the case. Since presumably the rest could
also depend on BH being disabled, just use read_lock_bh().
Then each layer mig
