• David Howells's avatar
    FS-Cache: Add transition to handle invalidate immediately after lookup · 96969521
    David Howells authored
    Add a missing transition to the FS-Cache object state machine to handle an
    invalidation event occuring between the back end completing the object lookup
    by calling fscache_obtained_object() (which moves to state OBJECT_AVAILABLE)
    and the backend returning to fscache_lookup_object() and thence to
    fscache_object_state_machine() which then does a goto lookup_transit to handle
    the transition - but lookup_transit doesn't handle EV_INVALIDATE.
    Without this, the following BUG can be logged:
    	FS-Cache: Unsupported event 2 [5/f7] in state OBJECT_AVAILABLE
    	------------[ cut here ]------------
    	kernel BUG at fs/fscache/object.c:357!
    Where event 2 is EV_INVALIDATE.
    Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
object.c 27.8 KB