Merge pull request #382 from robertbaldyga/update-ocf-flush-deadlock

Update OCF and handle new error code

casadm/extended_err_msg.c

@@ -108,6 +108,10 @@ struct {
 		OCF_ERR_FLUSHING_INTERRUPTED,
 		"Flushing of core interrupted"
 	},
+	{
+		OCF_ERR_FLUSH_IN_PROGRESS,
+		"Another flush operation in progress"
+	},
 	{
 		OCF_ERR_CANNOT_ADD_CORE_TO_POOL,
 		"Error occurred during adding core device to core pool"

modules/cas_cache/utils/cas_err.h

@@ -40,6 +40,7 @@ struct {
 	{ OCF_ERR_DIRTY_SHUTDOWN,		EFAULT	},
 	{ OCF_ERR_DIRTY_EXISTS,			EFAULT	},
 	{ OCF_ERR_FLUSHING_INTERRUPTED,		EINTR	},
+	{ OCF_ERR_FLUSH_IN_PROGRESS,		EBUSY	},
 	{ OCF_ERR_CANNOT_ADD_CORE_TO_POOL,	EFAULT	},
 	{ OCF_ERR_CACHE_IN_INCOMPLETE_STATE,	ENODEV	},
 	{ OCF_ERR_CORE_IN_INACTIVE_STATE,	ENODEV	},