#ifndef _LUSTRE_DLM_H__
#define _LUSTRE_DLM_H__
-#include <linux/kp30.h>
-#include <linux/list.h>
+#ifdef __KERNEL__
-#include <linux/obd_class.h>
+#include <linux/proc_fs.h>
+#include <linux/lustre_lib.h>
+#include <linux/lustre_net.h>
+#include <linux/lustre_import.h>
-#ifdef __KERNEL__
+struct obd_ops;
+struct obd_device;
#define OBD_LDLM_DEVICENAME "ldlm"
-typedef int cluster_host;
-typedef int cluster_pid;
-
typedef enum {
ELDLM_OK = 0,
- ELDLM_BLOCK_GRANTED,
- ELDLM_BLOCK_CONV,
- ELDLM_BLOCK_WAIT
+
+ ELDLM_LOCK_CHANGED = 300,
+ ELDLM_LOCK_ABORTED = 301,
+
+ ELDLM_NAMESPACE_EXISTS = 400,
+ ELDLM_BAD_NAMESPACE = 401
} ldlm_error_t;
-/* lock types */
-typedef enum {
- LCK_EX = 1,
- LCK_PW,
- LCK_PR,
- LCK_CW,
- LCK_CR,
- LCK_NL
-} ldlm_mode_t;
+#define LDLM_NAMESPACE_SERVER 0
+#define LDLM_NAMESPACE_CLIENT 1
+
+#define LDLM_FL_LOCK_CHANGED (1 << 0)
+#define LDLM_FL_BLOCK_GRANTED (1 << 1)
+#define LDLM_FL_BLOCK_CONV (1 << 2)
+#define LDLM_FL_BLOCK_WAIT (1 << 3)
+#define LDLM_FL_CBPENDING (1 << 4)
+#define LDLM_FL_AST_SENT (1 << 5)
+#define LDLM_FL_DESTROYED (1 << 6)
+#define LDLM_FL_WAIT_NOREPROC (1 << 7)
#define L2B(c) (1 << c)
static inline int lockmode_compat(ldlm_mode_t exist, ldlm_mode_t new)
{
if (exist < LCK_EX || exist > LCK_NL)
- BUG();
+ LBUG();
if (new < LCK_EX || new > LCK_NL)
- BUG();
+ LBUG();
return (lck_compat_array[exist] & L2B(new));
}
*/
struct ldlm_namespace {
- struct list_head ns_link; /* in the list of ns's */
- __u32 ns_id; /* identifier of ns */
- struct list_head *ns_hash; /* hash table for ns */
- struct list_head ns_root_list; /* all root resources in ns */
- struct obd_device *ns_obddev;
+ char *ns_name;
+ __u32 ns_client; /* is this a client-side lock tree? */
+ struct list_head *ns_hash; /* hash table for ns */
+ __u32 ns_refcount; /* count of resources in the hash */
+ struct list_head ns_root_list; /* all root resources in ns */
+ struct lustre_lock ns_lock; /* protects hash, refcount, list */
+ struct list_head ns_list_chain; /* position in global NS list */
+ struct proc_dir_entry *ns_proc_dir;
+
+ spinlock_t ns_counter_lock;
+ __u64 ns_locks;
+ __u64 ns_resources;
};
/*
#define RES_HASH_SIZE (1UL << RES_HASH_BITS)
#define RES_HASH_MASK (RES_HASH_SIZE - 1)
-#define RES_NAME_SIZE 6
-#define RES_VERSION_SIZE 4
+struct ldlm_lock;
+
+typedef int (*ldlm_blocking_callback)(struct ldlm_lock *lock,
+ struct ldlm_lock_desc *new, void *data,
+ __u32 data_len);
+
+typedef int (*ldlm_completion_callback)(struct ldlm_lock *lock, int flags);
struct ldlm_lock {
+ __u64 l_random;
+ int l_refc;
struct ldlm_resource *l_resource;
struct ldlm_lock *l_parent;
struct list_head l_children;
struct list_head l_childof;
struct list_head l_res_link; /*position in one of three res lists*/
+ struct list_head l_export_chain; /* per-export chain of locks */
+ struct list_head l_pending_chain; /* locks with callbacks pending*/
+ unsigned long l_callback_timeout;
+
ldlm_mode_t l_req_mode;
ldlm_mode_t l_granted_mode;
- void *l_completion_ast;
- void *l_blocking_ast;
- void *l_event;
- //XXX cluster_host l_holder;
+
+ ldlm_completion_callback l_completion_ast;
+ ldlm_blocking_callback l_blocking_ast;
+
+ struct obd_export *l_export;
+ struct lustre_handle *l_connh;
+ __u32 l_flags;
+ struct lustre_handle l_remote_handle;
+ void *l_data;
+ __u32 l_data_len;
+ void *l_cookie;
+ int l_cookie_len;
+ struct ldlm_extent l_extent;
__u32 l_version[RES_VERSION_SIZE];
+
+ __u32 l_readers;
+ __u32 l_writers;
+
+ /* If the lock is granted, a process sleeps on this waitq to learn when
+ * it's no longer in use. If the lock is not granted, a process sleeps
+ * on this waitq to learn when it becomes granted. */
+ wait_queue_head_t l_waitq;
};
+typedef int (*ldlm_res_compat)(struct ldlm_lock *child, struct ldlm_lock *new);
+typedef int (*ldlm_res_policy)(struct ldlm_lock *lock, void *req_cookie,
+ ldlm_mode_t mode, void *data);
+
+#define LDLM_PLAIN 10
+#define LDLM_EXTENT 11
+#define LDLM_MDSINTENT 12
+
+#define LDLM_MIN_TYPE 10
+#define LDLM_MAX_TYPE 12
+
+extern ldlm_res_compat ldlm_res_compat_table [];
+extern ldlm_res_policy ldlm_res_policy_table [];
+
struct ldlm_resource {
struct ldlm_namespace *lr_namespace;
struct list_head lr_hash;
- struct list_head lr_rootlink; /* link all root resources in NS */
struct ldlm_resource *lr_parent; /* 0 for a root resource */
struct list_head lr_children; /* list head for child resources */
- struct list_head lr_childof; /* part of child list of parent */
+ struct list_head lr_childof; /* part of ns_root_list if root res,
+ * part of lr_children if child */
struct list_head lr_granted;
struct list_head lr_converting;
struct list_head lr_waiting;
ldlm_mode_t lr_most_restr;
- atomic_t lr_refcount;
+ __u32 lr_type; /* PLAIN, EXTENT, or MDSINTENT */
struct ldlm_resource *lr_root;
- //XXX cluster_host lr_master;
- __u32 lr_name[RES_NAME_SIZE];
+ __u64 lr_name[RES_NAME_SIZE];
__u32 lr_version[RES_VERSION_SIZE];
- spinlock_t lr_lock;
-
- void (*lr_blocking)(struct ldlm_lock *lock, struct ldlm_lock *new);
+ atomic_t lr_refcount;
+ void *lr_tmp;
};
-struct ldlm_handle {
- __u64 addr;
- __u64 cookie;
+struct ldlm_ast_work {
+ struct ldlm_lock *w_lock;
+ int w_blocking;
+ struct ldlm_lock_desc w_desc;
+ struct list_head w_list;
+ int w_flags;
+ void *w_data;
+ int w_datalen;
};
-static inline void ldlm_lock(struct obd_device *obddev)
-{
- spin_lock(&obddev->u.ldlm.ldlm_lock);
-}
-
-static inline void ldlm_unlock(struct obd_device *obddev)
+/* Per-export ldlm state. */
+struct ldlm_export_data {
+ struct list_head led_held_locks;
+ struct obd_import led_import;
+};
+
+static inline struct ldlm_extent *ldlm_res2extent(struct ldlm_resource *res)
{
- spin_unlock(&obddev->u.ldlm.ldlm_lock);
+ return (struct ldlm_extent *)(res->lr_name);
}
extern struct obd_ops ldlm_obd_ops;
+extern char *ldlm_lockname[];
+extern char *ldlm_typename[];
+extern char *ldlm_it2str(int it);
+
+#define LDLM_DEBUG(lock, format, a...) \
+do { \
+ if (lock->l_resource == NULL) \
+ CDEBUG(D_DLMTRACE, "### " format \
+ " (UNKNOWN: lock %p(rc=%d/%d,%d) mode %s/%s on " \
+ "res \?\? (rc=\?\?) type \?\?\? remote "LPX64")\n" , \
+ ## a, lock, lock->l_refc, lock->l_readers, \
+ lock->l_writers, \
+ ldlm_lockname[lock->l_granted_mode], \
+ ldlm_lockname[lock->l_req_mode], \
+ lock->l_remote_handle.addr); \
+ else \
+ CDEBUG(D_DLMTRACE, "### " format \
+ " (%s: lock %p(rc=%d/%d,%d) mode %s/%s on res " \
+ LPU64" (rc=%d) type %s remote "LPX64")\n" , ## a, \
+ lock->l_resource->lr_namespace->ns_name, lock, \
+ lock->l_refc, lock->l_readers, lock->l_writers, \
+ ldlm_lockname[lock->l_granted_mode], \
+ ldlm_lockname[lock->l_req_mode], \
+ lock->l_resource->lr_name[0], \
+ atomic_read(&lock->l_resource->lr_refcount), \
+ ldlm_typename[lock->l_resource->lr_type], \
+ lock->l_remote_handle.addr); \
+} while (0)
+
+#define LDLM_DEBUG_NOLOCK(format, a...) \
+ CDEBUG(D_DLMTRACE, "### " format "\n" , ## a)
+
+/* ldlm_extent.c */
+int ldlm_extent_compat(struct ldlm_lock *, struct ldlm_lock *);
+int ldlm_extent_policy(struct ldlm_lock *, void *, ldlm_mode_t, void *);
+
+/* ldlm_lockd.c */
+int ldlm_handle_enqueue(struct ptlrpc_request *req);
+int ldlm_handle_convert(struct ptlrpc_request *req);
+int ldlm_handle_cancel(struct ptlrpc_request *req);
+
/* ldlm_lock.c */
-ldlm_error_t ldlm_local_lock_enqueue(struct obd_device *obbdev, __u32 ns_id,
- struct ldlm_resource *parent_res,
- struct ldlm_lock *parent_lock,
- __u32 *res_id, ldlm_mode_t mode,
- struct ldlm_handle *);
+void ldlm_register_intent(int (*arg)(struct ldlm_lock *lock, void *req_cookie,
+ ldlm_mode_t mode, void *data));
+void ldlm_unregister_intent(void);
+void ldlm_lock2handle(struct ldlm_lock *lock, struct lustre_handle *lockh);
+struct ldlm_lock *ldlm_handle2lock(struct lustre_handle *handle);
+void ldlm_lock2handle(struct ldlm_lock *lock, struct lustre_handle *lockh);
+
+#define LDLM_LOCK_PUT(lock) \
+do { \
+ /*LDLM_DEBUG(lock, "put");*/ \
+ ldlm_lock_put(lock); \
+} while (0)
+
+#define LDLM_LOCK_GET(lock) \
+({ \
+ ldlm_lock_get(lock); \
+ /*LDLM_DEBUG(lock, "get");*/ \
+ lock; \
+})
+
+struct ldlm_lock *ldlm_lock_get(struct ldlm_lock *lock);
+void ldlm_lock_put(struct ldlm_lock *lock);
+void ldlm_lock_destroy(struct ldlm_lock *lock);
+void ldlm_lock2desc(struct ldlm_lock *lock, struct ldlm_lock_desc *desc);
+void ldlm_lock_addref(struct lustre_handle *lockh, __u32 mode);
+void ldlm_lock_addref_internal(struct ldlm_lock* , __u32 mode);
+void ldlm_lock_decref(struct lustre_handle *lockh, __u32 mode);
+void ldlm_grant_lock(struct ldlm_lock *lock);
+int ldlm_lock_match(struct ldlm_namespace *ns, __u64 *res_id, __u32 type,
+ void *cookie, int cookielen, ldlm_mode_t mode,
+ struct lustre_handle *lockh);
+struct ldlm_lock *
+ldlm_lock_create(struct ldlm_namespace *ns,
+ struct lustre_handle *parent_lock_handle,
+ __u64 *res_id, __u32 type, ldlm_mode_t mode, void *data,
+ __u32 data_len);
+ldlm_error_t ldlm_lock_enqueue(struct ldlm_lock *lock, void *cookie,
+ int cookie_len, int *flags,
+ ldlm_completion_callback completion,
+ ldlm_blocking_callback blocking);
+struct ldlm_resource *ldlm_lock_convert(struct ldlm_lock *lock, int new_mode,
+ int *flags);
+void ldlm_lock_cancel(struct ldlm_lock *lock);
+void ldlm_run_ast_work(struct list_head *rpc_list);
+void ldlm_reprocess_all(struct ldlm_resource *res);
void ldlm_lock_dump(struct ldlm_lock *lock);
/* ldlm_test.c */
-int ldlm_test(struct obd_device *device);
+int ldlm_test(struct obd_device *device, struct lustre_handle *connh);
+int ldlm_regression_start(struct obd_device *obddev,
+ struct lustre_handle *connh,
+ unsigned int threads, unsigned int max_locks_in,
+ unsigned int num_resources_in,
+ unsigned int num_extents_in);
+int ldlm_regression_stop(void);
+
/* resource.c */
-struct ldlm_namespace *ldlm_namespace_find(struct obd_device *obddev, __u32 id);
-struct ldlm_namespace *ldlm_namespace_new(struct obd_device *obddev, __u32 id);
-void ldlm_resource_dump(struct ldlm_resource *res);
+struct ldlm_namespace *ldlm_namespace_new(char *name, __u32 local);
+int ldlm_namespace_free(struct ldlm_namespace *ns);
+int ldlm_proc_setup(struct obd_device *obd);
+void ldlm_proc_cleanup(struct obd_device *obd);
+
+/* resource.c - internal */
struct ldlm_resource *ldlm_resource_get(struct ldlm_namespace *ns,
struct ldlm_resource *parent,
- __u32 *name, int create);
+ __u64 *name, __u32 type, int create);
+struct ldlm_resource *ldlm_resource_getref(struct ldlm_resource *res);
int ldlm_resource_put(struct ldlm_resource *res);
+void ldlm_resource_add_lock(struct ldlm_resource *res, struct list_head *head,
+ struct ldlm_lock *lock);
+void ldlm_resource_unlink_lock(struct ldlm_lock *lock);
+void ldlm_res2desc(struct ldlm_resource *res, struct ldlm_resource_desc *desc);
+void ldlm_dump_all_namespaces(void);
+void ldlm_namespace_dump(struct ldlm_namespace *);
+void ldlm_resource_dump(struct ldlm_resource *);
+int ldlm_lock_change_resource(struct ldlm_lock *, __u64 new_resid[3]);
+
+/* ldlm_request.c */
+int ldlm_completion_ast(struct ldlm_lock *lock, int flags);
+int ldlm_cli_enqueue(struct lustre_handle *conn,
+ struct ptlrpc_request *req,
+ struct ldlm_namespace *ns,
+ struct lustre_handle *parent_lock_handle,
+ __u64 *res_id,
+ __u32 type,
+ void *cookie, int cookielen,
+ ldlm_mode_t mode,
+ int *flags,
+ ldlm_completion_callback completion,
+ ldlm_blocking_callback callback,
+ void *data,
+ __u32 data_len,
+ struct lustre_handle *lockh);
+int ldlm_match_or_enqueue(struct lustre_handle *connh,
+ struct ptlrpc_request *req,
+ struct ldlm_namespace *ns,
+ struct lustre_handle *parent_lock_handle,
+ __u64 *res_id,
+ __u32 type,
+ void *cookie, int cookielen,
+ ldlm_mode_t mode,
+ int *flags,
+ ldlm_completion_callback completion,
+ ldlm_blocking_callback callback,
+ void *data,
+ __u32 data_len,
+ struct lustre_handle *lockh);
+int ldlm_server_ast(struct lustre_handle *lockh, struct ldlm_lock_desc *new,
+ void *data, __u32 data_len);
+int ldlm_cli_convert(struct lustre_handle *, int new_mode, int *flags);
+int ldlm_cli_cancel(struct lustre_handle *lockh);
+int ldlm_cli_cancel_unused(struct ldlm_namespace *ns, __u64 *res_id);
+
+/* mds/handler.c */
+/* This has to be here because recurisve inclusion sucks. */
+int mds_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
+ void *data, __u32 data_len);
#endif /* __KERNEL__ */
#define IOC_LDLM_MIN_NR 40
#define IOC_LDLM_TEST _IOWR('f', 40, long)
-#define IOC_LDLM_MAX_NR 41
+#define IOC_LDLM_DUMP _IOWR('f', 41, long)
+#define IOC_LDLM_REGRESS_START _IOWR('f', 42, long)
+#define IOC_LDLM_REGRESS_STOP _IOWR('f', 43, long)
+#define IOC_LDLM_MAX_NR 43
#endif
git://git.whamcloud.com / fs / lustre-release.git / blobdiff