dlm: Split lock mode and flag constants into a sharable header.
This allows others to use the DLM constants without being tied to the
function API of fs/dlm.
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
diff --git a/include/linux/dlm.h b/include/linux/dlm.h
index be9d278..c743fbc 100644
--- a/include/linux/dlm.h
+++ b/include/linux/dlm.h
@@ -19,148 +19,12 @@
* routines and structures to use DLM lockspaces
*/
-/*
- * Lock Modes
- */
+/* Lock levels and flags are here */
+#include <linux/dlmconstants.h>
-#define DLM_LOCK_IV -1 /* invalid */
-#define DLM_LOCK_NL 0 /* null */
-#define DLM_LOCK_CR 1 /* concurrent read */
-#define DLM_LOCK_CW 2 /* concurrent write */
-#define DLM_LOCK_PR 3 /* protected read */
-#define DLM_LOCK_PW 4 /* protected write */
-#define DLM_LOCK_EX 5 /* exclusive */
-
-/*
- * Maximum size in bytes of a dlm_lock name
- */
#define DLM_RESNAME_MAXLEN 64
-/*
- * Flags to dlm_lock
- *
- * DLM_LKF_NOQUEUE
- *
- * Do not queue the lock request on the wait queue if it cannot be granted
- * immediately. If the lock cannot be granted because of this flag, DLM will
- * either return -EAGAIN from the dlm_lock call or will return 0 from
- * dlm_lock and -EAGAIN in the lock status block when the AST is executed.
- *
- * DLM_LKF_CANCEL
- *
- * Used to cancel a pending lock request or conversion. A converting lock is
- * returned to its previously granted mode.
- *
- * DLM_LKF_CONVERT
- *
- * Indicates a lock conversion request. For conversions the name and namelen
- * are ignored and the lock ID in the LKSB is used to identify the lock.
- *
- * DLM_LKF_VALBLK
- *
- * Requests DLM to return the current contents of the lock value block in the
- * lock status block. When this flag is set in a lock conversion from PW or EX
- * modes, DLM assigns the value specified in the lock status block to the lock
- * value block of the lock resource. The LVB is a DLM_LVB_LEN size array
- * containing application-specific information.
- *
- * DLM_LKF_QUECVT
- *
- * Force a conversion request to be queued, even if it is compatible with
- * the granted modes of other locks on the same resource.
- *
- * DLM_LKF_IVVALBLK
- *
- * Invalidate the lock value block.
- *
- * DLM_LKF_CONVDEADLK
- *
- * Allows the dlm to resolve conversion deadlocks internally by demoting the
- * granted mode of a converting lock to NL. The DLM_SBF_DEMOTED flag is
- * returned for a conversion that's been effected by this.
- *
- * DLM_LKF_PERSISTENT
- *
- * Only relevant to locks originating in userspace. A persistent lock will not
- * be removed if the process holding the lock exits.
- *
- * DLM_LKF_NODLCKWT
- *
- * Do not cancel the lock if it gets into conversion deadlock.
- * Exclude this lock from being monitored due to DLM_LSFL_TIMEWARN.
- *
- * DLM_LKF_NODLCKBLK
- *
- * net yet implemented
- *
- * DLM_LKF_EXPEDITE
- *
- * Used only with new requests for NL mode locks. Tells the lock manager
- * to grant the lock, ignoring other locks in convert and wait queues.
- *
- * DLM_LKF_NOQUEUEBAST
- *
- * Send blocking AST's before returning -EAGAIN to the caller. It is only
- * used along with the NOQUEUE flag. Blocking AST's are not sent for failed
- * NOQUEUE requests otherwise.
- *
- * DLM_LKF_HEADQUE
- *
- * Add a lock to the head of the convert or wait queue rather than the tail.
- *
- * DLM_LKF_NOORDER
- *
- * Disregard the standard grant order rules and grant a lock as soon as it
- * is compatible with other granted locks.
- *
- * DLM_LKF_ORPHAN
- *
- * not yet implemented
- *
- * DLM_LKF_ALTPR
- *
- * If the requested mode cannot be granted immediately, try to grant the lock
- * in PR mode instead. If this alternate mode is granted instead of the
- * requested mode, DLM_SBF_ALTMODE is returned in the lksb.
- *
- * DLM_LKF_ALTCW
- *
- * The same as ALTPR, but the alternate mode is CW.
- *
- * DLM_LKF_FORCEUNLOCK
- *
- * Unlock the lock even if it is converting or waiting or has sublocks.
- * Only really for use by the userland device.c code.
- *
- */
-
-#define DLM_LKF_NOQUEUE 0x00000001
-#define DLM_LKF_CANCEL 0x00000002
-#define DLM_LKF_CONVERT 0x00000004
-#define DLM_LKF_VALBLK 0x00000008
-#define DLM_LKF_QUECVT 0x00000010
-#define DLM_LKF_IVVALBLK 0x00000020
-#define DLM_LKF_CONVDEADLK 0x00000040
-#define DLM_LKF_PERSISTENT 0x00000080
-#define DLM_LKF_NODLCKWT 0x00000100
-#define DLM_LKF_NODLCKBLK 0x00000200
-#define DLM_LKF_EXPEDITE 0x00000400
-#define DLM_LKF_NOQUEUEBAST 0x00000800
-#define DLM_LKF_HEADQUE 0x00001000
-#define DLM_LKF_NOORDER 0x00002000
-#define DLM_LKF_ORPHAN 0x00004000
-#define DLM_LKF_ALTPR 0x00008000
-#define DLM_LKF_ALTCW 0x00010000
-#define DLM_LKF_FORCEUNLOCK 0x00020000
-#define DLM_LKF_TIMEOUT 0x00040000
-
-/*
- * Some return codes that are not in errno.h
- */
-
-#define DLM_ECANCEL 0x10001
-#define DLM_EUNLOCK 0x10002
typedef void dlm_lockspace_t;