uapi/linux/dlmconstants.h

1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
5 **  Copyright (C) Sistina Software, Inc.  1997-2003  All rights reserved.
6 **  Copyright (C) 2004-2007 Red Hat, Inc.  All rights reserved.
30 #define DLM_LOCK_IV		(-1)	/* invalid */
45  * immediately.  If the lock cannot be granted because of this flag, DLM will
46  * either return -EAGAIN from the dlm_lock call or will return 0 from
47  * dlm_lock and -EAGAIN in the lock status block when the AST is executed.
52  * returned to its previously granted mode.
62  * lock status block.  When this flag is set in a lock conversion from PW or EX
65  * containing application-specific information.
79  * granted mode of a converting lock to NL.  The DLM_SBF_DEMOTED flag is
98  * Used only with new requests for NL mode locks.  Tells the lock manager
103  * Send blocking AST's before returning -EAGAIN to the caller.  It is only
104  * used along with the NOQUEUE flag.  Blocking AST's are not sent for failed
122  * If the requested mode cannot be granted immediately, try to grant the lock
123  * in PR mode instead.  If this alternate mode is granted instead of the
124  * requested mode, DLM_SBF_ALTMODE is returned in the lksb.
128  * The same as ALTPR, but the alternate mode is CW.