[PATCH] rxrpc_find_service_conn_rcu: use read_seqbegin() rather than read_seqbegin_or_lock()

[David Howells]

Oleg Nesterov <oleg at redhat.com> wrote:

> Just none of read_seqbegin_or_lock/need_seqretry/done_seqretry
> helpers make any sense in this code.

I disagree.  I think in at least a couple of cases I do want a locked second
path - ideally locked shared if seqlock can be made to use an rwlock instead
of a spinlock.

David