[PATCH] rxrpc: Call state should be read with READ_ONCE() under some circumstances

[David Howells]

Baptiste Lepers <baptiste.lepers at gmail.com> wrote:

> The call state may be changed at any time by the data-ready routine in
> response to received packets, so if the call state is to be read and acted
> upon several times in a function, READ_ONCE() must be used unless the call
> state lock is held.

I'm going to add:

    As it happens, we used READ_ONCE() to read the state a few lines above the
    unmarked read in rxrpc_input_data(), so use that value rather than
    re-reading it.

to the commit message, if that's okay by you.

David