From 969695215f9a865cbf64c4ce3742ac9fc57fffed Mon Sep 17 00:00:00 2001
From: David Howells <dhowells@redhat.com>
Date: Wed, 5 Dec 2012 13:34:49 +0000
Subject: [PATCH] FS-Cache: Add transition to handle invalidate immediately
 after lookup

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: David Howells <dhowells@redhat.com>
---
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