linux-imx

void afs_init_callback_state(struct afs_server *server)

{

    if (!test_and_clear_bit(AFS_SERVER_FL_NEW, &server->flags))

        server->cb_s_break++;

}

​

/*

 * actually break a callback

 */

{

    _enter("");

​

    clear_bit(AFS_VNODE_NEW_CONTENT, &vnode->flags);

    if (test_and_clear_bit(AFS_VNODE_CB_PROMISED, &vnode->flags)) {

        vnode->cb_break++;

        afs_clear_permits(vnode);

​

        spin_lock(&vnode->lock);

​

        _debug("break callback");

​

        if (list_empty(&vnode->granted_locks) &&

            !list_empty(&vnode->pending_locks))

            afs_lock_may_be_available(vnode);

        spin_unlock(&vnode->lock);

    }

​

    write_sequnlock(&vnode->cb_lock);

}

​

/*

 * allow the fileserver to explicitly break one callback

 * - happens when

 *   - the backing file is changed

 *   - a lock is released

 */

static void afs_break_one_callback(struct afs_server *server,