[LU-8403] OBD_NOTIFY_* flags cleanup

Sun, 26 Mar 2017 13:25:51 +0000

Half of the OBD_NOTIFY_* flags are essentially useless but we still have code that used them. The useless ones are

OBD_NOTIFY_CREATE
OBD_NOTIFY_CONNECT
OBD_NOTIFY_SYNC_NONBLOCK
OBD_NOTIFY_SYNC
OBD_NOTIFY_CONFIG

Server side OBDs do not implement o_notify and so the OBD_NOTIFY_CONFIG notification in server_start_targets() is useless and can be removed.
The data parameter of obd_notify() and obd_notify_observer() may be removed.
lov_notify() may be simplified by assuming that watched is not NULL.
The OBD_NOTIFY_CONNECT notification in lov_connect() is useless and can be removed.
The OBD_NOTIFY_ACTIVE notification in lmv_connect_mdc() is useless and can be rremoved.
lco_flags is never checked in llite and can be removed.
enum config_flags can be removed.

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