include/linux/dlm.h

1 /* SPDX-License-Identifier: GPL-2.0-only */
5 **  Copyright (C) Sistina Software, Inc.  1997-2003  All rights reserved.
6 **  Copyright (C) 2004-2011 Red Hat, Inc.  All rights reserved.
23  * recover_prep: called before the dlm begins lock recovery.
27  * recover_done: called after the dlm completes lock recovery.
48  *   is not used.  When set, dlm_new_lockspace() returns -EBADR if cluster
63  *   dlm_new_lockspace() should return -EEXIST if the lockspace exists.
69  * ops: callbacks that indicate lockspace recovery points so the
70  *   caller can coordinate its recovery and know lockspace members.
77  *   be used or not.  0: will be used, -EXXX will not be used.
78  *   -EOPNOTSUPP: the dlm does not have recovery_callbacks enabled.
103  * mode: the requested mode of the lock (DLM_LOCK_)
115  * -EINVAL if any input parameters are invalid
116  * -EAGAIN if request would block and is flagged DLM_LKF_NOQUEUE
117  * -ENOMEM if there is no memory to process request
118  * -ENOTCONN if there is a communication error
134 	     int mode,
142 	     void (*bast) (void *astarg, int mode));
158  * -EINVAL if any input parameters are invalid
159  * -ENOTEMPTY if the lock still has sublocks
160  * -EBUSY if the lock is waiting for a remote lock operation
161  * -ENOTCONN if there is a communication error