*******************************************************************************
**
** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
-** Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
+** Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved.
**
** This copyrighted material is made available to anyone wishing to use,
** modify, copy, or redistribute it subject to the terms and conditions
#include <linux/jhash.h>
#include <linux/miscdevice.h>
#include <linux/mutex.h>
-#include <asm/semaphore.h>
#include <asm/uaccess.h>
#include <linux/dlm.h>
#include "config.h"
-#define DLM_LOCKSPACE_LEN 64
-
/* Size of the temp buffer midcomms allocates on the stack.
We try to make this large enough so most messages fit.
FIXME: should sctp make this unnecessary? */
} \
}
-#define DLM_FAKE_USER_AST ERR_PTR(-EINVAL)
-
struct dlm_direntry {
struct list_head list;
struct dlm_dirtable {
struct list_head list;
- rwlock_t lock;
+ spinlock_t lock;
};
struct dlm_rsbtable {
struct list_head list;
struct list_head toss;
- rwlock_t lock;
+ spinlock_t lock;
};
struct dlm_lkbtable {
struct dlm_recover {
struct list_head list;
- int *nodeids;
+ int *nodeids; /* nodeids of all members */
int node_count;
+ int *new; /* nodeids of new members */
+ int new_count;
uint64_t seq;
};
struct dlm_args {
uint32_t flags;
- void *astaddr;
- long astparam;
- void *bastaddr;
+ void (*astfn) (void *astparam);
+ void *astparam;
+ void (*bastfn) (void *astparam, int mode);
int mode;
struct dlm_lksb *lksb;
unsigned long timeout;
#define DLM_IFL_ENDOFLIFE 0x00200000
#define DLM_IFL_WATCH_TIMEWARN 0x00400000
#define DLM_IFL_TIMEOUT_CANCEL 0x00800000
+#define DLM_IFL_DEADLOCK_CANCEL 0x01000000
#define DLM_IFL_USER 0x00000001
#define DLM_IFL_ORPHAN 0x00000002
struct list_head lkb_astqueue; /* need ast to be sent */
struct list_head lkb_ownqueue; /* list of locks for a process */
struct list_head lkb_time_list;
- unsigned long lkb_timestamp;
+ ktime_t lkb_time_bast; /* for debugging */
+ ktime_t lkb_timestamp;
unsigned long lkb_timeout_cs;
char *lkb_lvbptr;
struct dlm_lksb *lkb_lksb; /* caller's status block */
- void *lkb_astaddr; /* caller's ast function */
- void *lkb_bastaddr; /* caller's bast function */
- long lkb_astparam; /* caller's ast arg */
+ void (*lkb_astfn) (void *astparam);
+ void (*lkb_bastfn) (void *astparam, int mode);
+ union {
+ void *lkb_astparam; /* caller's ast arg */
+ struct dlm_user_args *lkb_ua;
+ };
};
char rc_buf[0];
};
+union dlm_packet {
+ struct dlm_header header; /* common to other two */
+ struct dlm_message message;
+ struct dlm_rcom rcom;
+};
+
struct rcom_config {
- uint32_t rf_lvblen;
- uint32_t rf_lsflags;
- uint64_t rf_unused;
+ __le32 rf_lvblen;
+ __le32 rf_lsflags;
+ __le64 rf_unused;
};
struct rcom_lock {
- uint32_t rl_ownpid;
- uint32_t rl_lkid;
- uint32_t rl_remid;
- uint32_t rl_parent_lkid;
- uint32_t rl_parent_remid;
- uint32_t rl_exflags;
- uint32_t rl_flags;
- uint32_t rl_lvbseq;
- int rl_result;
+ __le32 rl_ownpid;
+ __le32 rl_lkid;
+ __le32 rl_remid;
+ __le32 rl_parent_lkid;
+ __le32 rl_parent_remid;
+ __le32 rl_exflags;
+ __le32 rl_flags;
+ __le32 rl_lvbseq;
+ __le32 rl_result;
int8_t rl_rqmode;
int8_t rl_grmode;
int8_t rl_status;
int8_t rl_asts;
- uint16_t rl_wait_type;
- uint16_t rl_namelen;
+ __le16 rl_wait_type;
+ __le16 rl_namelen;
char rl_name[DLM_RESNAME_MAXLEN];
char rl_lvb[0];
};
uint32_t ls_global_id; /* global unique lockspace ID */
uint32_t ls_exflags;
int ls_lvblen;
- int ls_count; /* reference count */
+ int ls_count; /* refcount of processes in
+ the dlm using this ls */
+ int ls_create_count; /* create/release refcount */
unsigned long ls_flags; /* LSFL_ */
+ unsigned long ls_scan_time;
struct kobject ls_kobj;
struct dlm_rsbtable *ls_rsbtbl;
int ls_low_nodeid;
int ls_total_weight;
int *ls_node_array;
+ gfp_t ls_allocation;
struct dlm_rsb ls_stub_rsb; /* for returning errors */
struct dlm_lkb ls_stub_lkb; /* for returning errors */
struct dentry *ls_debug_rsb_dentry; /* debugfs */
struct dentry *ls_debug_waiters_dentry; /* debugfs */
+ struct dentry *ls_debug_locks_dentry; /* debugfs */
+ struct dentry *ls_debug_all_dentry; /* debugfs */
wait_queue_head_t ls_uevent_wait; /* user part of join/leave */
int ls_uevent_result;
uint64_t ls_recover_seq;
struct dlm_recover *ls_recover_args;
struct rw_semaphore ls_in_recovery; /* block local requests */
+ struct rw_semaphore ls_recv_active; /* block dlm_recv */
struct list_head ls_requestqueue;/* queue remote requests */
struct mutex ls_requestqueue_mutex;
- char *ls_recover_buf;
+ struct dlm_rcom *ls_recover_buf;
int ls_recover_nodeid; /* for debugging */
uint64_t ls_rcom_seq;
spinlock_t ls_rcom_spin;
return (ls->ls_exflags & DLM_LSFL_NODIR) ? 1 : 0;
}
+int dlm_netlink_init(void);
+void dlm_netlink_exit(void);
+void dlm_timeout_warn(struct dlm_lkb *lkb);
+int dlm_plock_init(void);
+void dlm_plock_exit(void);
+
+#ifdef CONFIG_DLM_DEBUG
+int dlm_register_debugfs(void);
+void dlm_unregister_debugfs(void);
+int dlm_create_debug_file(struct dlm_ls *ls);
+void dlm_delete_debug_file(struct dlm_ls *ls);
+#else
+static inline int dlm_register_debugfs(void) { return 0; }
+static inline void dlm_unregister_debugfs(void) { }
+static inline int dlm_create_debug_file(struct dlm_ls *ls) { return 0; }
+static inline void dlm_delete_debug_file(struct dlm_ls *ls) { }
+#endif
+
#endif /* __DLM_INTERNAL_DOT_H__ */
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