* vim:expandtab:shiftwidth=8:tabstop=8:
*/
-#ifndef _LUSTRE_DLM_H__
-#define _LUSTRE_DLM_H__
+#ifndef _LINUX_LUSTRE_DLM_H__
+#define _LINUX_LUSTRE_DLM_H__
-#ifdef __KERNEL__
-# include <linux/proc_fs.h>
+#ifndef _LUSTRE_DLM_H__
+#error Do not #include this file directly. #include <lprocfs_status.h> instead
#endif
-#include <linux/lustre_lib.h>
-#include <linux/lustre_net.h>
-#include <linux/lustre_import.h>
-#include <linux/lustre_handles.h>
-#include <linux/lustre_export.h> /* 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_NO_TIMEOUT 0x020000 /* Blocked by group lock - wait
- * indefinitely */
-
-/* file & record locking */
-#define LDLM_FL_BLOCK_NOWAIT 0x040000 /* server told not to wait if blocked */
-#define LDLM_FL_TEST_LOCK 0x080000 /* return blocking lock */
-#define LDLM_FL_GET_BLOCKING 0x10000000 /* return updated blocking proc info */
-#define LDLM_FL_DEADLOCK_CHK 0x20000000 /* check for deadlock */
-#define LDLM_FL_DEADLOCK_DEL 0x40000000 /* 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_CONFIG_CHANGE 0x8000000 /* see ldlm_cli_cancel_unused */
-#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);
-}
+# include <linux/proc_fs.h>
+# ifdef HAVE_BIT_SPINLOCK_H
+# include <asm/processor.h>
+# include <linux/bit_spinlock.h>
+# endif
#endif
-struct ldlm_resource * lock_res_and_lock(struct ldlm_lock *lock);
-void unlock_res_and_lock(struct ldlm_lock *lock);
#endif
git://git.whamcloud.com / fs / lustre-release.git / blobdiff