X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=blobdiff_plain;f=lustre%2Fldlm%2Fldlm_internal.h;h=c5eef1966089b63c0ed55e3ae32fc25a90fa84ac;hp=2316e9db1e391d74c2b1dd94155e6cc904c390d0;hb=8ed3105b261fcc0816b064d6308356f645c9e12b;hpb=fda99d855f31b29259c0d72a415fa1f4ba289c7f diff --git a/lustre/ldlm/ldlm_internal.h b/lustre/ldlm/ldlm_internal.h index 2316e9d..c5eef19 100644 --- a/lustre/ldlm/ldlm_internal.h +++ b/lustre/ldlm/ldlm_internal.h @@ -1,6 +1,4 @@ -/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- - * vim:expandtab:shiftwidth=8:tabstop=8: - * +/* * GPL HEADER START * * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. @@ -26,8 +24,10 @@ * GPL HEADER END */ /* - * Copyright 2008 Sun Microsystems, Inc. All rights reserved + * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. * Use is subject to license terms. + * + * Copyright (c) 2011, 2013, Intel Corporation. */ /* * This file is part of Lustre, http://www.lustre.org/ @@ -36,96 +36,136 @@ #define MAX_STRING_SIZE 128 -extern cfs_atomic_t ldlm_srv_namespace_nr; -extern cfs_atomic_t ldlm_cli_namespace_nr; -extern cfs_semaphore_t ldlm_srv_namespace_lock; -extern cfs_list_t ldlm_srv_namespace_list; -extern cfs_semaphore_t ldlm_cli_namespace_lock; -extern cfs_list_t ldlm_cli_namespace_list; +extern int ldlm_srv_namespace_nr; +extern int ldlm_cli_namespace_nr; +extern struct mutex ldlm_srv_namespace_lock; +extern struct list_head ldlm_srv_namespace_list; +extern struct mutex ldlm_cli_namespace_lock; +extern struct list_head ldlm_cli_active_namespace_list; +extern struct list_head ldlm_cli_inactive_namespace_list; +extern unsigned int ldlm_cancel_unused_locks_before_replay; + +static inline int ldlm_namespace_nr_read(ldlm_side_t client) +{ + return client == LDLM_NAMESPACE_SERVER ? + ldlm_srv_namespace_nr : ldlm_cli_namespace_nr; +} + +static inline void ldlm_namespace_nr_inc(ldlm_side_t client) +{ + if (client == LDLM_NAMESPACE_SERVER) + ldlm_srv_namespace_nr++; + else + ldlm_cli_namespace_nr++; +} + +static inline void ldlm_namespace_nr_dec(ldlm_side_t client) +{ + if (client == LDLM_NAMESPACE_SERVER) + ldlm_srv_namespace_nr--; + else + ldlm_cli_namespace_nr--; +} -static inline cfs_atomic_t *ldlm_namespace_nr(ldlm_side_t client) +static inline struct list_head *ldlm_namespace_list(ldlm_side_t client) { return client == LDLM_NAMESPACE_SERVER ? - &ldlm_srv_namespace_nr : &ldlm_cli_namespace_nr; + &ldlm_srv_namespace_list : &ldlm_cli_active_namespace_list; } -static inline cfs_list_t *ldlm_namespace_list(ldlm_side_t client) +static inline struct list_head *ldlm_namespace_inactive_list(ldlm_side_t client) { return client == LDLM_NAMESPACE_SERVER ? - &ldlm_srv_namespace_list : &ldlm_cli_namespace_list; + &ldlm_srv_namespace_list : &ldlm_cli_inactive_namespace_list; } -static inline cfs_semaphore_t *ldlm_namespace_lock(ldlm_side_t client) +static inline struct mutex *ldlm_namespace_lock(ldlm_side_t client) { return client == LDLM_NAMESPACE_SERVER ? &ldlm_srv_namespace_lock : &ldlm_cli_namespace_lock; } -/* ldlm_request.c */ -typedef enum { - LDLM_ASYNC, - LDLM_SYNC, -} ldlm_sync_t; +/* ns_bref is the number of resources in this namespace */ +static inline int ldlm_ns_empty(struct ldlm_namespace *ns) +{ + return atomic_read(&ns->ns_bref) == 0; +} +void ldlm_namespace_move_to_active_locked(struct ldlm_namespace *, ldlm_side_t); +void ldlm_namespace_move_to_inactive_locked(struct ldlm_namespace *, ldlm_side_t); +struct ldlm_namespace *ldlm_namespace_first_locked(ldlm_side_t); + +/* ldlm_request.c */ /* Cancel lru flag, it indicates we cancel aged locks. */ enum { LDLM_CANCEL_AGED = 1 << 0, /* Cancel aged locks (non lru resize). */ LDLM_CANCEL_PASSED = 1 << 1, /* Cancel passed number of locks. */ LDLM_CANCEL_SHRINK = 1 << 2, /* Cancel locks from shrinker. */ - LDLM_CANCEL_LRUR = 1 << 3 /* Cancel locks from lru resize. */ + LDLM_CANCEL_LRUR = 1 << 3, /* Cancel locks from lru resize. */ + LDLM_CANCEL_NO_WAIT = 1 << 4 /* Cancel locks w/o blocking (neither + * sending nor waiting for any rpcs) */ }; -int ldlm_cancel_lru(struct ldlm_namespace *ns, int nr, ldlm_sync_t sync, - int flags); +int ldlm_cancel_lru(struct ldlm_namespace *ns, int nr, + ldlm_cancel_flags_t sync, int flags); int ldlm_cancel_lru_local(struct ldlm_namespace *ns, - cfs_list_t *cancels, int count, int max, + struct list_head *cancels, int count, int max, ldlm_cancel_flags_t cancel_flags, int flags); -extern int ldlm_enqueue_min; -int ldlm_get_enq_timeout(struct ldlm_lock *lock); - +extern unsigned int ldlm_enqueue_min; /* ldlm_resource.c */ +extern struct kmem_cache *ldlm_resource_slab; +extern struct kmem_cache *ldlm_lock_slab; + int ldlm_resource_putref_locked(struct ldlm_resource *res); void ldlm_resource_insert_lock_after(struct ldlm_lock *original, struct ldlm_lock *new); void ldlm_namespace_free_prior(struct ldlm_namespace *ns, struct obd_import *imp, int force); void ldlm_namespace_free_post(struct ldlm_namespace *ns); -/* ldlm_lock.c */ -/* Number of blocking/completion callbacks that will be sent in - * parallel (see bug 11301). */ -#define PARALLEL_AST_LIMIT 200 +/* ldlm_lock.c */ struct ldlm_cb_set_arg { - struct ptlrpc_request_set *set; - cfs_atomic_t restart; - __u32 type; /* LDLM_BL_CALLBACK or LDLM_CP_CALLBACK */ + struct ptlrpc_request_set *set; + int type; /* LDLM_{CP,BL,GL}_CALLBACK */ + atomic_t restart; + struct list_head *list; + union ldlm_gl_desc *gl_desc; /* glimpse AST descriptor */ }; typedef enum { - LDLM_WORK_BL_AST, - LDLM_WORK_CP_AST, - LDLM_WORK_REVOKE_AST + LDLM_WORK_BL_AST, + LDLM_WORK_CP_AST, + LDLM_WORK_REVOKE_AST, + LDLM_WORK_GL_AST } ldlm_desc_ast_t; -void ldlm_grant_lock(struct ldlm_lock *lock, cfs_list_t *work_list); +void ldlm_grant_lock(struct ldlm_lock *lock, struct list_head *work_list); +int ldlm_fill_lvb(struct ldlm_lock *lock, struct req_capsule *pill, + enum req_location loc, void *data, int size); struct ldlm_lock * ldlm_lock_create(struct ldlm_namespace *ns, const struct ldlm_res_id *, ldlm_type_t type, ldlm_mode_t, const struct ldlm_callback_suite *cbs, - void *data, __u32 lvb_len); + void *data, __u32 lvb_len, enum lvb_type lvb_type); ldlm_error_t ldlm_lock_enqueue(struct ldlm_namespace *, struct ldlm_lock **, - void *cookie, int *flags); + void *cookie, __u64 *flags); void ldlm_lock_addref_internal(struct ldlm_lock *, __u32 mode); void ldlm_lock_addref_internal_nolock(struct ldlm_lock *, __u32 mode); void ldlm_lock_decref_internal(struct ldlm_lock *, __u32 mode); void ldlm_lock_decref_internal_nolock(struct ldlm_lock *, __u32 mode); void ldlm_add_ast_work_item(struct ldlm_lock *lock, struct ldlm_lock *new, - cfs_list_t *work_list); -int ldlm_reprocess_queue(struct ldlm_resource *res, cfs_list_t *queue, - cfs_list_t *work_list); -int ldlm_run_ast_work(cfs_list_t *rpc_list, ldlm_desc_ast_t ast_type); -int ldlm_lock_remove_from_lru(struct ldlm_lock *lock); + struct list_head *work_list); +#ifdef HAVE_SERVER_SUPPORT +int ldlm_reprocess_queue(struct ldlm_resource *res, struct list_head *queue, + struct list_head *work_list); +#endif +int ldlm_run_ast_work(struct ldlm_namespace *ns, struct list_head *rpc_list, + ldlm_desc_ast_t ast_type); +int ldlm_work_gl_ast_lock(struct ptlrpc_request_set *rqset, void *opaq); +int ldlm_lock_remove_from_lru_check(struct ldlm_lock *lock, + cfs_time_t last_use); +#define ldlm_lock_remove_from_lru(lock) ldlm_lock_remove_from_lru_check(lock, 0) int ldlm_lock_remove_from_lru_nolock(struct ldlm_lock *lock); void ldlm_lock_add_to_lru_nolock(struct ldlm_lock *lock); void ldlm_lock_add_to_lru(struct ldlm_lock *lock); @@ -137,37 +177,47 @@ void ldlm_cancel_locks_for_export(struct obd_export *export); /* ldlm_lockd.c */ int ldlm_bl_to_thread_lock(struct ldlm_namespace *ns, struct ldlm_lock_desc *ld, struct ldlm_lock *lock); -int ldlm_bl_to_thread_list(struct ldlm_namespace *ns, struct ldlm_lock_desc *ld, - cfs_list_t *cancels, int count, int mode); +int ldlm_bl_to_thread_list(struct ldlm_namespace *ns, + struct ldlm_lock_desc *ld, + struct list_head *cancels, int count, + ldlm_cancel_flags_t cancel_flags); void ldlm_handle_bl_callback(struct ldlm_namespace *ns, struct ldlm_lock_desc *ld, struct ldlm_lock *lock); +#ifdef HAVE_SERVER_SUPPORT /* ldlm_plain.c */ -int ldlm_process_plain_lock(struct ldlm_lock *lock, int *flags, int first_enq, - ldlm_error_t *err, cfs_list_t *work_list); +int ldlm_process_plain_lock(struct ldlm_lock *lock, __u64 *flags, + int first_enq, ldlm_error_t *err, + struct list_head *work_list); + +/* ldlm_inodebits.c */ +int ldlm_process_inodebits_lock(struct ldlm_lock *lock, __u64 *flags, + int first_enq, ldlm_error_t *err, + struct list_head *work_list); +#endif /* ldlm_extent.c */ -int ldlm_process_extent_lock(struct ldlm_lock *lock, int *flags, int first_enq, - ldlm_error_t *err, cfs_list_t *work_list); +#ifdef HAVE_SERVER_SUPPORT +int ldlm_process_extent_lock(struct ldlm_lock *lock, __u64 *flags, + int first_enq, ldlm_error_t *err, + struct list_head *work_list); +#endif void ldlm_extent_add_lock(struct ldlm_resource *res, struct ldlm_lock *lock); void ldlm_extent_unlink_lock(struct ldlm_lock *lock); /* ldlm_flock.c */ -int ldlm_process_flock_lock(struct ldlm_lock *req, int *flags, int first_enq, - ldlm_error_t *err, cfs_list_t *work_list); - -/* ldlm_inodebits.c */ -int ldlm_process_inodebits_lock(struct ldlm_lock *lock, int *flags, - int first_enq, ldlm_error_t *err, - cfs_list_t *work_list); +int ldlm_process_flock_lock(struct ldlm_lock *req, __u64 *flags, + int first_enq, ldlm_error_t *err, + struct list_head *work_list); +int ldlm_init_flock_export(struct obd_export *exp); +void ldlm_destroy_flock_export(struct obd_export *exp); /* l_lock.c */ void l_check_ns_lock(struct ldlm_namespace *ns); void l_check_no_ns_lock(struct ldlm_namespace *ns); -extern cfs_proc_dir_entry_t *ldlm_svc_proc_dir; -extern cfs_proc_dir_entry_t *ldlm_type_proc_dir; +extern struct proc_dir_entry *ldlm_svc_proc_dir; struct ldlm_state { struct ptlrpc_service *ldlm_cb_service; @@ -178,7 +228,7 @@ struct ldlm_state { }; /* interval tree, for LDLM_EXTENT. */ -extern cfs_mem_cache_t *ldlm_interval_slab; /* slab cache for ldlm_interval */ +extern struct kmem_cache *ldlm_interval_slab; /* slab cache for ldlm_interval */ extern void ldlm_interval_attach(struct ldlm_interval *n, struct ldlm_lock *l); extern struct ldlm_interval *ldlm_interval_detach(struct ldlm_lock *l); extern struct ldlm_interval *ldlm_interval_alloc(struct ldlm_lock *lock); @@ -188,9 +238,9 @@ static inline struct ldlm_extent * ldlm_interval_extent(struct ldlm_interval *node) { struct ldlm_lock *lock; - LASSERT(!cfs_list_empty(&node->li_group)); + LASSERT(!list_empty(&node->li_group)); - lock = cfs_list_entry(node->li_group.next, struct ldlm_lock, + lock = list_entry(node->li_group.next, struct ldlm_lock, l_sl_policy); return &lock->l_policy_data.l_extent; } @@ -200,58 +250,94 @@ void ldlm_exit(void); enum ldlm_policy_res { LDLM_POLICY_CANCEL_LOCK, - LDLM_POLICY_KEEP_LOCK + LDLM_POLICY_KEEP_LOCK, + LDLM_POLICY_SKIP_LOCK }; typedef enum ldlm_policy_res ldlm_policy_res_t; -#define LDLM_POOL_PROC_READER(var, type) \ - static int lprocfs_rd_##var(char *page, char **start, off_t off, \ - int count, int *eof, void *data) \ - { \ - struct ldlm_pool *pl = data; \ - type tmp; \ - \ - cfs_spin_lock(&pl->pl_lock); \ - tmp = pl->pl_##var; \ - cfs_spin_unlock(&pl->pl_lock); \ - \ - return lprocfs_rd_uint(page, start, off, count, eof, &tmp); \ - } \ - struct __##var##__dummy_read {;} /* semicolon catcher */ - -#define LDLM_POOL_PROC_WRITER(var, type) \ - int lprocfs_wr_##var(struct file *file, const char *buffer, \ - unsigned long count, void *data) \ - { \ - struct ldlm_pool *pl = data; \ - type tmp; \ - int rc; \ - \ - rc = lprocfs_wr_uint(file, buffer, count, &tmp); \ - if (rc) { \ - CERROR("Can't parse user input, rc = %d\n", rc); \ - return rc; \ - } \ - \ - cfs_spin_lock(&pl->pl_lock); \ - pl->pl_##var = tmp; \ - cfs_spin_unlock(&pl->pl_lock); \ - \ - return rc; \ - } \ - struct __##var##__dummy_write {;} /* semicolon catcher */ +#define LDLM_POOL_PROC_READER_SEQ_SHOW(var, type) \ + static int lprocfs_##var##_seq_show(struct seq_file *m, void *v)\ + { \ + struct ldlm_pool *pl = m->private; \ + type tmp; \ + \ + spin_lock(&pl->pl_lock); \ + tmp = pl->pl_##var; \ + spin_unlock(&pl->pl_lock); \ + \ + return lprocfs_uint_seq_show(m, &tmp); \ + } \ + struct __##var##__dummy_read {;} /* semicolon catcher */ + +#define LDLM_POOL_PROC_WRITER(var, type) \ + static int lprocfs_wr_##var(struct file *file, \ + const char __user *buffer, \ + unsigned long count, void *data) \ + { \ + struct ldlm_pool *pl = data; \ + type tmp; \ + int rc; \ + \ + rc = lprocfs_wr_uint(file, buffer, count, &tmp); \ + if (rc < 0) { \ + CERROR("Can't parse user input, rc = %d\n", rc);\ + return rc; \ + } \ + \ + spin_lock(&pl->pl_lock); \ + pl->pl_##var = tmp; \ + spin_unlock(&pl->pl_lock); \ + \ + return rc; \ + } \ + struct __##var##__dummy_write {;} /* semicolon catcher */ + +static inline void +ldlm_add_var(struct lprocfs_vars *vars, struct proc_dir_entry *proc_dir, + const char *name, void *data, const struct file_operations *ops) +{ + snprintf((char *)vars->name, MAX_STRING_SIZE, "%s", name); + vars->data = data; + vars->fops = ops; + lprocfs_add_vars(proc_dir, vars, NULL); +} static inline int is_granted_or_cancelled(struct ldlm_lock *lock) { int ret = 0; lock_res_and_lock(lock); - if (((lock->l_req_mode == lock->l_granted_mode) && - !(lock->l_flags & LDLM_FL_CP_REQD)) || - (lock->l_flags & LDLM_FL_FAILED)) + if ((lock->l_req_mode == lock->l_granted_mode) && + !ldlm_is_cp_reqd(lock)) + ret = 1; + else if (ldlm_is_failed(lock) || ldlm_is_cancel(lock)) ret = 1; unlock_res_and_lock(lock); return ret; } + +typedef void (*ldlm_policy_wire_to_local_t)(const ldlm_wire_policy_data_t *, + ldlm_policy_data_t *); + +typedef void (*ldlm_policy_local_to_wire_t)(const ldlm_policy_data_t *, + ldlm_wire_policy_data_t *); + +void ldlm_plain_policy_wire_to_local(const ldlm_wire_policy_data_t *wpolicy, + ldlm_policy_data_t *lpolicy); +void ldlm_plain_policy_local_to_wire(const ldlm_policy_data_t *lpolicy, + ldlm_wire_policy_data_t *wpolicy); +void ldlm_ibits_policy_wire_to_local(const ldlm_wire_policy_data_t *wpolicy, + ldlm_policy_data_t *lpolicy); +void ldlm_ibits_policy_local_to_wire(const ldlm_policy_data_t *lpolicy, + ldlm_wire_policy_data_t *wpolicy); +void ldlm_extent_policy_wire_to_local(const ldlm_wire_policy_data_t *wpolicy, + ldlm_policy_data_t *lpolicy); +void ldlm_extent_policy_local_to_wire(const ldlm_policy_data_t *lpolicy, + ldlm_wire_policy_data_t *wpolicy); +void ldlm_flock_policy_wire_to_local(const ldlm_wire_policy_data_t *wpolicy, + ldlm_policy_data_t *lpolicy); + +void ldlm_flock_policy_local_to_wire(const ldlm_policy_data_t *lpolicy, + ldlm_wire_policy_data_t *wpolicy);