#include "dlm/dlmapi.h"
#include <linux/dlm.h>
+/* Needed for plock-related prototypes */
+struct file;
+struct file_lock;
+
/*
* dlmconstants.h does not have a LOCAL flag. We hope to remove it
* some day, but right now we need it. Let's fake it. This value is larger
* be freed. Thus, a stack must not return from ->disconnect()
* until it will no longer reference the conn pointer.
*
- * If hangup_pending is zero, ocfs2_cluster_disconnect() will also
- * be dropping the reference on the module.
- */
- int (*disconnect)(struct ocfs2_cluster_connection *conn,
- int hangup_pending);
-
- /*
- * ocfs2_cluster_hangup() exists for compatibility with older
- * ocfs2 tools. Only the classic stack really needs it. As such
- * ->hangup() is not required of all stacks. See the comment by
- * ocfs2_cluster_hangup() for more details.
- *
- * Note that ocfs2_cluster_hangup() can only be called if
- * hangup_pending was passed to ocfs2_cluster_disconnect().
+ * Once this call returns, the stack glue will be dropping this
+ * connection's reference on the module.
*/
- void (*hangup)(const char *group, int grouplen);
+ int (*disconnect)(struct ocfs2_cluster_connection *conn);
/*
* ->this_node() returns the cluster's unique identifier for the
*/
void *(*lock_lvb)(union ocfs2_dlm_lksb *lksb);
+ /*
+ * Cluster-aware posix locks
+ *
+ * This is NULL for stacks which do not support posix locks.
+ */
+ int (*plock)(struct ocfs2_cluster_connection *conn,
+ u64 ino,
+ struct file *file,
+ int cmd,
+ struct file_lock *fl);
+
/*
* This is an optoinal debugging hook. If provided, the
* stack can dump debugging information about this lock.
void *ocfs2_dlm_lvb(union ocfs2_dlm_lksb *lksb);
void ocfs2_dlm_dump_lksb(union ocfs2_dlm_lksb *lksb);
+int ocfs2_stack_supports_plocks(void);
+int ocfs2_plock(struct ocfs2_cluster_connection *conn, u64 ino,
+ struct file *file, int cmd, struct file_lock *fl);
+
void ocfs2_stack_glue_set_locking_protocol(struct ocfs2_locking_protocol *proto);