• David Howells's avatar
    rxrpc: Fix error distribution · f3344303
    David Howells authored
    Fix error distribution by immediately delivering the errors to all the
    affected calls rather than deferring them to a worker thread.  The problem
    with the latter is that retries and things can happen in the meantime when we
    want to stop that sooner.
    
    To this end:
    
     (1) Stop the error distributor from removing calls from the error_targets
         list so that peer->lock isn't needed to synchronise against other adds
         and removals.
    
     (2) Require the peer's error_targets list to be accessed with RCU, thereby
         avoiding the need to take peer->lock over distribution.
    
     (3) Don't attempt to affect a call's state if it is already marked complete.
    Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
    f3344303
ar-internal.h 41.1 KB