/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- * (visit-tags-table FILE) * vim:expandtab:shiftwidth=8:tabstop=8: */ #ifndef _LUSTRE_DLM_H__ #define _LUSTRE_DLM_H__ #ifdef __KERNEL__ # include #endif #include #include #include #include #include /* for obd_export, for LDLM_DEBUG */ struct obd_ops; struct obd_device; #define LDLM_DEFAULT_LRU_SIZE 100 typedef enum { ELDLM_OK = 0, ELDLM_LOCK_CHANGED = 300, ELDLM_LOCK_ABORTED = 301, ELDLM_LOCK_REPLACED = 302, ELDLM_NO_LOCK_DATA = 303, ELDLM_NAMESPACE_EXISTS = 400, ELDLM_BAD_NAMESPACE = 401 } ldlm_error_t; #define LDLM_NAMESPACE_SERVER 0 #define LDLM_NAMESPACE_CLIENT 1 #define LDLM_FL_LOCK_CHANGED 0x000001 /* extent, mode, or resource changed */ /* If the server returns one of these flags, then the lock was put on that list. * If the client sends one of these flags (during recovery ONLY!), it wants the * lock added to the specified list, no questions asked. -p */ #define LDLM_FL_BLOCK_GRANTED 0x000002 #define LDLM_FL_BLOCK_CONV 0x000004 #define LDLM_FL_BLOCK_WAIT 0x000008 #define LDLM_FL_CBPENDING 0x000010 /* this lock is being destroyed */ #define LDLM_FL_AST_SENT 0x000020 /* blocking or cancel packet was sent */ #define LDLM_FL_WAIT_NOREPROC 0x000040 /* not a real flag, not saved in lock */ #define LDLM_FL_CANCEL 0x000080 /* cancellation callback already run */ /* Lock is being replayed. This could probably be implied by the fact that one * of BLOCK_{GRANTED,CONV,WAIT} is set, but that is pretty dangerous. */ #define LDLM_FL_REPLAY 0x000100 #define LDLM_FL_INTENT_ONLY 0x000200 /* don't grant lock, just do intent */ #define LDLM_FL_LOCAL_ONLY 0x000400 /* see ldlm_cli_cancel_unused */ /* don't run the cancel callback under ldlm_cli_cancel_unused */ #define LDLM_FL_FAILED 0x000800 #define LDLM_FL_HAS_INTENT 0x001000 /* lock request has intent */ #define LDLM_FL_CANCELING 0x002000 /* lock cancel has already been sent */ #define LDLM_FL_LOCAL 0x004000 /* local lock (ie, no srv/cli split) */ #define LDLM_FL_WARN 0x008000 /* see ldlm_cli_cancel_unused */ #define LDLM_FL_DISCARD_DATA 0x010000 /* discard (no writeback) on cancel */ #define LDLM_FL_CONFIG_CHANGE 0x020000 /* see ldlm_cli_cancel_unused */ #define LDLM_FL_NO_TIMEOUT 0x040000 /* Blocked by group lock - wait * indefinitely */ /* file & record locking */ #define LDLM_FL_BLOCK_NOWAIT 0x080000 /* server told not to wait if blocked */ #define LDLM_FL_TEST_LOCK 0x100000 /* return blocking lock */ #define LDLM_FL_GET_BLOCKING 0x200000 /* return updated blocking proc info */ #define LDLM_FL_DEADLOCK_CHK 0x400000 /* check for deadlock */ #define LDLM_FL_DEADLOCK_DEL 0x800000 /* lock no longer blocked */ /* These are flags that are mapped into the flags and ASTs of blocking locks */ #define LDLM_AST_DISCARD_DATA 0x80000000 /* Add FL_DISCARD to blocking ASTs */ /* Flags sent in AST lock_flags to be mapped into the receiving lock. */ #define LDLM_AST_FLAGS (LDLM_FL_DISCARD_DATA) /* XXX FIXME: This is being added to b_size as a low-risk fix to the fact that * the LVB filling happens _after_ the lock has been granted, so another thread * can match before the LVB has been updated. As a dirty hack, we set * LDLM_FL_CAN_MATCH only after we've done the LVB poop. * * The proper fix is to do the granting inside of the completion AST, which can * be replaced with a LVB-aware wrapping function for OSC locks. That change is * pretty high-risk, though, and would need a lot more testing. */ #define LDLM_FL_CAN_MATCH 0x100000 /* A lock contributes to the kms calculation until it has finished the part * of it's cancelation that performs write back on its dirty pages. It * can remain on the granted list during this whole time. Threads racing * to update the kms after performing their writeback need to know to * exclude each others locks from the calculation as they walk the granted * list. */ #define LDLM_FL_KMS_IGNORE 0x200000 /* completion ast to be executed */ #define LDLM_FL_CP_REQD 0x400000 /* cleanup_resource has already handled the lock */ #define LDLM_FL_CLEANED 0x800000 /* optimization hint: LDLM can run blocking callback from current context * w/o involving separate thread. in order to decrease cs rate */ #define LDLM_FL_ATOMIC_CB 0x1000000 /* while this flag is set, the lock can't change resource */ #define LDLM_FL_LOCK_PROTECT 0x4000000 #define LDLM_FL_LOCK_PROTECT_BIT 26 /* The blocking callback is overloaded to perform two functions. These flags * indicate which operation should be performed. */ #define LDLM_CB_BLOCKING 1 #define LDLM_CB_CANCELING 2 /* compatibility matrix */ #define LCK_COMPAT_EX LCK_NL #define LCK_COMPAT_PW (LCK_COMPAT_EX | LCK_CR) #define LCK_COMPAT_PR (LCK_COMPAT_PW | LCK_PR) #define LCK_COMPAT_CW (LCK_COMPAT_PW | LCK_CW) #define LCK_COMPAT_CR (LCK_COMPAT_CW | LCK_PR | LCK_PW) #define LCK_COMPAT_NL (LCK_COMPAT_CR | LCK_EX) #define LCK_COMPAT_GROUP (LCK_GROUP | LCK_NL) static ldlm_mode_t lck_compat_array[] = { [LCK_EX] LCK_COMPAT_EX, [LCK_PW] LCK_COMPAT_PW, [LCK_PR] LCK_COMPAT_PR, [LCK_CW] LCK_COMPAT_CW, [LCK_CR] LCK_COMPAT_CR, [LCK_NL] LCK_COMPAT_NL, [LCK_GROUP] LCK_COMPAT_GROUP }; static inline void lockmode_verify(ldlm_mode_t mode) { LASSERT(mode >= LCK_EX && mode <= LCK_GROUP); } static inline int lockmode_compat(ldlm_mode_t exist, ldlm_mode_t new) { return (lck_compat_array[exist] & new); } /* * * cluster name spaces * */ #define DLM_OST_NAMESPACE 1 #define DLM_MDS_NAMESPACE 2 /* XXX - do we just separate this by security domains and use a prefix for multiple namespaces in the same domain? - */ /* * Locking rules: * * lr_lock * * lr_lock * waiting_locks_spinlock * * lr_lock * led_lock * * lr_lock * ns_unused_lock * * lr_lvb_sem * lr_lock * */ struct ldlm_lock; struct ldlm_resource; struct ldlm_namespace; typedef int (*ldlm_res_policy)(struct ldlm_namespace *, struct ldlm_lock **, void *req_cookie, ldlm_mode_t mode, int flags, void *data); struct ldlm_valblock_ops { int (*lvbo_init)(struct ldlm_resource *res); int (*lvbo_update)(struct ldlm_resource *res, struct lustre_msg *m, int buf_idx, int increase); }; struct ldlm_namespace { char *ns_name; __u32 ns_client; /* is this a client-side lock tree? */ struct list_head *ns_hash; /* hash table for ns */ spinlock_t ns_hash_lock; __u32 ns_refcount; /* count of resources in the hash */ struct list_head ns_root_list; /* all root resources in ns */ struct list_head ns_list_chain; /* position in global NS list */ /* struct proc_dir_entry *ns_proc_dir; */ struct list_head ns_unused_list; /* all root resources in ns */ int ns_nr_unused; spinlock_t ns_unused_lock; unsigned int ns_max_unused; unsigned long ns_next_dump; /* next dump time */ atomic_t ns_locks; __u64 ns_resources; ldlm_res_policy ns_policy; struct ldlm_valblock_ops *ns_lvbo; void *ns_lvbp; wait_queue_head_t ns_waitq; }; /* * * Resource hash table * */ #define RES_HASH_BITS 10 #define RES_HASH_SIZE (1UL << RES_HASH_BITS) #define RES_HASH_MASK (RES_HASH_SIZE - 1) struct ldlm_lock; typedef int (*ldlm_blocking_callback)(struct ldlm_lock *lock, struct ldlm_lock_desc *new, void *data, int flag); typedef int (*ldlm_completion_callback)(struct ldlm_lock *lock, int flags, void *data); typedef int (*ldlm_glimpse_callback)(struct ldlm_lock *lock, void *data); struct ldlm_lock { struct portals_handle l_handle; // must be first in the structure atomic_t l_refc; /* ldlm_lock_change_resource() can change this */ struct ldlm_resource *l_resource; /* set once, no need to protect it */ struct ldlm_lock *l_parent; /* protected by ns_hash_lock */ struct list_head l_children; struct list_head l_childof; /* protected by ns_hash_lock. FIXME */ struct list_head l_lru; /* protected by lr_lock */ struct list_head l_res_link; // position in one of three res lists /* protected by led_lock */ struct list_head l_export_chain; // per-export chain of locks /* protected by lr_lock */ ldlm_mode_t l_req_mode; ldlm_mode_t l_granted_mode; ldlm_completion_callback l_completion_ast; ldlm_blocking_callback l_blocking_ast; ldlm_glimpse_callback l_glimpse_ast; struct obd_export *l_export; struct obd_export *l_conn_export; /* protected by lr_lock */ __u32 l_flags; struct lustre_handle l_remote_handle; ldlm_policy_data_t l_policy_data; /* protected by lr_lock */ __u32 l_readers; __u32 l_writers; __u8 l_destroyed; /* 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; struct timeval l_enqueued_time; unsigned long l_last_used; /* jiffies */ struct ldlm_extent l_req_extent; /* Client-side-only members */ __u32 l_lvb_len; /* temporary storage for */ void *l_lvb_data; /* an LVB received during */ void *l_lvb_swabber; /* an enqueue */ void *l_ast_data; /* Server-side-only members */ /* protected by elt_lock */ struct list_head l_pending_chain; /* callbacks pending */ unsigned long l_callback_timeout; __u32 l_pid; /* pid which created this lock */ __u32 l_pidb; /* who holds LOCK_PROTECT_BIT */ struct list_head l_tmp; /* for ldlm_add_ast_work_item() */ struct list_head l_bl_ast; struct list_head l_cp_ast; struct ldlm_lock *l_blocking_lock; int l_bl_ast_run; }; #define LDLM_PLAIN 10 #define LDLM_EXTENT 11 #define LDLM_FLOCK 12 #define LDLM_IBITS 13 #define LDLM_MIN_TYPE 10 #define LDLM_MAX_TYPE 14 struct ldlm_resource { struct ldlm_namespace *lr_namespace; /* protected by ns_hash_lock */ struct list_head lr_hash; 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 ns_root_list if root res, * part of lr_children if child */ spinlock_t lr_lock; /* protected by lr_lock */ struct list_head lr_granted; struct list_head lr_converting; struct list_head lr_waiting; ldlm_mode_t lr_most_restr; __u32 lr_type; /* LDLM_PLAIN or LDLM_EXTENT */ struct ldlm_res_id lr_name; atomic_t lr_refcount; /* Server-side-only lock value block elements */ struct semaphore lr_lvb_sem; __u32 lr_lvb_len; void *lr_lvb_data; /* lr_tmp holds a list head temporarily, during the building of a work * queue. see ldlm_add_ast_work_item and ldlm_run_ast_work */ void *lr_tmp; }; 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; }; extern struct obd_ops ldlm_obd_ops; extern char *ldlm_lockname[]; extern char *ldlm_typename[]; extern char *ldlm_it2str(int it); #define __LDLM_DEBUG(level, lock, format, a...) \ do { \ if (lock->l_resource == NULL) { \ CDEBUG(level, "### " format \ " ns: \?\? lock: %p/"LPX64" lrc: %d/%d,%d mode: %s/%s "\ "res: \?\? rrc=\?\? type: \?\?\? flags: %x remote: " \ LPX64" expref: %d pid: %u\n" , ## a, lock, \ lock->l_handle.h_cookie, atomic_read(&lock->l_refc), \ lock->l_readers, lock->l_writers, \ ldlm_lockname[lock->l_granted_mode], \ ldlm_lockname[lock->l_req_mode], \ lock->l_flags, lock->l_remote_handle.cookie, \ lock->l_export ? \ atomic_read(&lock->l_export->exp_refcount) : -99, \ lock->l_pid); \ break; \ } \ if (lock->l_resource->lr_type == LDLM_EXTENT) { \ CDEBUG(level, "### " format \ " ns: %s lock: %p/"LPX64" lrc: %d/%d,%d mode: %s/%s " \ "res: "LPU64"/"LPU64"/"LPU64" rrc: %d type: %s ["LPU64 \ "->"LPU64"] (req "LPU64"->"LPU64") flags: %x remote: " \ LPX64" expref: %d pid: %u\n" , ## a, \ lock->l_resource->lr_namespace->ns_name, lock, \ lock->l_handle.h_cookie, atomic_read(&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.name[0], \ lock->l_resource->lr_name.name[1], \ lock->l_resource->lr_name.name[2], \ atomic_read(&lock->l_resource->lr_refcount), \ ldlm_typename[lock->l_resource->lr_type], \ lock->l_policy_data.l_extent.start, \ lock->l_policy_data.l_extent.end, \ lock->l_req_extent.start, lock->l_req_extent.end, \ lock->l_flags, lock->l_remote_handle.cookie, \ lock->l_export ? \ atomic_read(&lock->l_export->exp_refcount) : -99, \ lock->l_pid); \ break; \ } \ if (lock->l_resource->lr_type == LDLM_FLOCK) { \ CDEBUG(level, "### " format \ " ns: %s lock: %p/"LPX64" lrc: %d/%d,%d mode: %s/%s " \ "res: "LPU64"/"LPU64"/"LPU64" rrc: %d type: %s " \ "pid: "LPU64" nid: "LPU64" ["LPU64"->"LPU64"] " \ "flags: %x remote: "LPX64" expref: %d pid: %u\n", ## a,\ lock->l_resource->lr_namespace->ns_name, lock, \ lock->l_handle.h_cookie, atomic_read(&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.name[0], \ lock->l_resource->lr_name.name[1], \ lock->l_resource->lr_name.name[2], \ atomic_read(&lock->l_resource->lr_refcount), \ ldlm_typename[lock->l_resource->lr_type], \ lock->l_policy_data.l_flock.pid, \ lock->l_policy_data.l_flock.nid, \ lock->l_policy_data.l_flock.start, \ lock->l_policy_data.l_flock.end, \ lock->l_flags, lock->l_remote_handle.cookie, \ lock->l_export ? \ atomic_read(&lock->l_export->exp_refcount) : -99, \ lock->l_pid); \ break; \ } \ if (lock->l_resource->lr_type == LDLM_IBITS) { \ CDEBUG(level, "### " format \ " ns: %s lock: %p/"LPX64" lrc: %d/%d,%d mode: %s/%s " \ "res: "LPU64"/"LPU64"/"LPU64" bits "LPX64" rrc: %d " \ "type: %s flags: %x remote: "LPX64" expref: %d " \ "pid %u\n" , ## a, \ lock->l_resource->lr_namespace->ns_name, \ lock, lock->l_handle.h_cookie, \ atomic_read (&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.name[0], \ lock->l_resource->lr_name.name[1], \ lock->l_resource->lr_name.name[2], \ lock->l_policy_data.l_inodebits.bits, \ atomic_read(&lock->l_resource->lr_refcount), \ ldlm_typename[lock->l_resource->lr_type], \ lock->l_flags, lock->l_remote_handle.cookie, \ lock->l_export ? \ atomic_read(&lock->l_export->exp_refcount) : -99, \ lock->l_pid); \ break; \ } \ { \ CDEBUG(level, "### " format \ " ns: %s lock: %p/"LPX64" lrc: %d/%d,%d mode: %s/%s " \ "res: "LPU64"/"LPU64"/"LPU64"/"LPU64" rrc: %d type: %s " \ "flags: %x remote: "LPX64" expref: %d " \ "pid: %u\n" , ## a, \ lock->l_resource->lr_namespace->ns_name, \ lock, lock->l_handle.h_cookie, \ atomic_read (&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.name[0], \ lock->l_resource->lr_name.name[1], \ lock->l_resource->lr_name.name[2], \ lock->l_resource->lr_name.name[3], \ atomic_read(&lock->l_resource->lr_refcount), \ ldlm_typename[lock->l_resource->lr_type], \ lock->l_flags, lock->l_remote_handle.cookie, \ lock->l_export ? \ atomic_read(&lock->l_export->exp_refcount) : -99, \ lock->l_pid); \ } \ } while (0) #define LDLM_DEBUG(lock, format, a...) __LDLM_DEBUG(D_DLMTRACE, lock, \ format, ## a) #define LDLM_ERROR(lock, format, a...) __LDLM_DEBUG(D_ERROR, lock, format, ## a) #define LDLM_DEBUG_NOLOCK(format, a...) \ CDEBUG(D_DLMTRACE, "### " format "\n" , ## a) typedef int (*ldlm_processing_policy)(struct ldlm_lock *lock, int *flags, int first_enq, ldlm_error_t *err, struct list_head *work_list); /* * Iterators. */ #define LDLM_ITER_CONTINUE 1 /* keep iterating */ #define LDLM_ITER_STOP 2 /* stop iterating */ typedef int (*ldlm_iterator_t)(struct ldlm_lock *, void *); typedef int (*ldlm_res_iterator_t)(struct ldlm_resource *, void *); int ldlm_resource_foreach(struct ldlm_resource *res, ldlm_iterator_t iter, void *closure); int ldlm_namespace_foreach(struct ldlm_namespace *ns, ldlm_iterator_t iter, void *closure); int ldlm_namespace_foreach_res(struct ldlm_namespace *ns, ldlm_res_iterator_t iter, void *closure); int ldlm_replay_locks(struct obd_import *imp); void ldlm_change_cbdata(struct ldlm_namespace *, struct ldlm_res_id *, ldlm_iterator_t iter, void *data); /* ldlm_flock.c */ int ldlm_flock_completion_ast(struct ldlm_lock *lock, int flags, void *data); int ldlm_handle_flock_deadlock_check(struct ptlrpc_request *req); /* ldlm_extent.c */ __u64 ldlm_extent_shift_kms(struct ldlm_lock *lock, __u64 old_kms); /* ldlm_lockd.c */ int ldlm_server_blocking_ast(struct ldlm_lock *, struct ldlm_lock_desc *, void *data, int flag); int ldlm_server_completion_ast(struct ldlm_lock *lock, int flags, void *data); int ldlm_server_glimpse_ast(struct ldlm_lock *lock, void *data); int ldlm_handle_enqueue(struct ptlrpc_request *req, ldlm_completion_callback, ldlm_blocking_callback, ldlm_glimpse_callback); int ldlm_handle_convert(struct ptlrpc_request *req); int ldlm_handle_cancel(struct ptlrpc_request *req); int ldlm_del_waiting_lock(struct ldlm_lock *lock); int ldlm_get_ref(void); void ldlm_put_ref(int force); /* ldlm_lock.c */ ldlm_processing_policy ldlm_get_processing_policy(struct ldlm_resource *res); void ldlm_register_intent(struct ldlm_namespace *ns, ldlm_res_policy arg); void ldlm_lock2handle(struct ldlm_lock *lock, struct lustre_handle *lockh); struct ldlm_lock *__ldlm_handle2lock(struct lustre_handle *, int flags); void ldlm_cancel_callback(struct ldlm_lock *); int ldlm_lock_set_data(struct lustre_handle *, void *data); void ldlm_lock_remove_from_lru(struct ldlm_lock *); struct ldlm_lock *ldlm_handle2lock_ns(struct ldlm_namespace *, struct lustre_handle *); static inline struct ldlm_lock *ldlm_handle2lock(struct lustre_handle *h) { return __ldlm_handle2lock(h, 0); } #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_decref(struct lustre_handle *lockh, __u32 mode); void ldlm_lock_decref_and_cancel(struct lustre_handle *lockh, __u32 mode); void ldlm_lock_allow_match(struct ldlm_lock *lock); int ldlm_lock_match(struct ldlm_namespace *ns, int flags, struct ldlm_res_id *, __u32 type, ldlm_policy_data_t *, ldlm_mode_t mode, struct lustre_handle *); 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_cancel_locks_for_export(struct obd_export *export); void ldlm_reprocess_all(struct ldlm_resource *res); void ldlm_reprocess_all_ns(struct ldlm_namespace *ns); void ldlm_lock_dump(int level, struct ldlm_lock *lock, int pos); void ldlm_lock_dump_handle(int level, struct lustre_handle *); /* ldlm_test.c */ 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_new(char *name, __u32 local); int ldlm_namespace_cleanup(struct ldlm_namespace *ns, int flags); int ldlm_namespace_free(struct ldlm_namespace *ns, int force); int ldlm_proc_setup(void); void ldlm_proc_cleanup(void); /* resource.c - internal */ struct ldlm_resource *ldlm_resource_get(struct ldlm_namespace *ns, struct ldlm_resource *parent, struct ldlm_res_id, __u32 type, int create); struct ldlm_resource *ldlm_resource_getref(struct ldlm_resource *res); int ldlm_resource_putref(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(int level); void ldlm_namespace_dump(int level, struct ldlm_namespace *); void ldlm_resource_dump(int level, struct ldlm_resource *); int ldlm_lock_change_resource(struct ldlm_namespace *, struct ldlm_lock *, struct ldlm_res_id); /* ldlm_request.c */ int ldlm_expired_completion_wait(void *data); int ldlm_completion_ast(struct ldlm_lock *lock, int flags, void *data); int ldlm_cli_enqueue(struct obd_export *exp, struct ptlrpc_request *req, struct ldlm_namespace *ns, struct ldlm_res_id, __u32 type, ldlm_policy_data_t *, ldlm_mode_t mode, int *flags, ldlm_blocking_callback blocking, ldlm_completion_callback completion, ldlm_glimpse_callback glimpse, void *data, void *lvb, __u32 lvb_len, void *lvb_swabber, 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 *, struct ldlm_res_id *, int flags, void *opaque); /* mds/handler.c */ /* This has to be here because recursive inclusion sucks. */ int intent_disposition(struct ldlm_reply *rep, int flag); void intent_set_disposition(struct ldlm_reply *rep, int flag); int mds_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc, void *data, int flag); /* ioctls for trying requests */ #define IOC_LDLM_TYPE 'f' #define IOC_LDLM_MIN_NR 40 #define IOC_LDLM_TEST _IOWR('f', 40, long) #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 static inline void lock_res(struct ldlm_resource *res) { spin_lock(&res->lr_lock); } static inline void unlock_res(struct ldlm_resource *res) { spin_unlock(&res->lr_lock); } static inline void check_res_locked(struct ldlm_resource *res) { LASSERT_SPIN_LOCKED(&res->lr_lock); } #ifdef __KERNEL__ static inline void lock_bitlock(struct ldlm_lock *lock) { bit_spin_lock(LDLM_FL_LOCK_PROTECT_BIT, (void *) &lock->l_flags); LASSERT(lock->l_pidb == 0); lock->l_pidb = current->pid; } static inline void unlock_bitlock(struct ldlm_lock *lock) { LASSERT(lock->l_pidb == current->pid); lock->l_pidb = 0; bit_spin_unlock(LDLM_FL_LOCK_PROTECT_BIT, (void *) &lock->l_flags); } #endif struct ldlm_resource * lock_res_and_lock(struct ldlm_lock *lock); void unlock_res_and_lock(struct ldlm_lock *lock); #endif