+/* -*- 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.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; If not, see
+ * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
+ *
+ * Copyright (c) 2011 Whamcloud, Inc.
+ *
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
+ */
+
+#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;
+
+static inline int ldlm_res_eq(const struct ldlm_res_id *res0,
+ const struct ldlm_res_id *res1)
+{
+ return !memcmp(res0, res1, sizeof(*res0));
+}
+
+static inline cfs_atomic_t *ldlm_namespace_nr(ldlm_side_t client)
+{
+ return client == LDLM_NAMESPACE_SERVER ?
+ &ldlm_srv_namespace_nr : &ldlm_cli_namespace_nr;
+}
+
+static inline cfs_list_t *ldlm_namespace_list(ldlm_side_t client)
+{
+ return client == LDLM_NAMESPACE_SERVER ?
+ &ldlm_srv_namespace_list : &ldlm_cli_namespace_list;
+}
+
+static inline cfs_semaphore_t *ldlm_namespace_lock(ldlm_side_t client)
+{
+ return client == LDLM_NAMESPACE_SERVER ?
+ &ldlm_srv_namespace_lock : &ldlm_cli_namespace_lock;
+}
+
/* ldlm_request.c */
-int ldlm_cancel_lru(struct ldlm_namespace *ns);
+typedef enum {
+ LDLM_ASYNC,
+ LDLM_SYNC,
+} ldlm_sync_t;
+
+/* 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_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_local(struct ldlm_namespace *ns,
+ cfs_list_t *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);
/* ldlm_resource.c */
+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 */
-void ldlm_grant_lock(struct ldlm_lock *lock, void *data, int datalen,
- int run_ast);
+
+struct ldlm_cb_set_arg {
+ int type; /* LDLM_BL_CALLBACK or LDLM_CP_CALLBACK */
+ unsigned int threshold; /* threshold to wake up the waiting proc */
+ cfs_atomic_t rpcs; /* # of inflight rpcs in set */
+ cfs_atomic_t restart;
+ cfs_waitq_t waitq;
+};
+
+typedef enum {
+ LDLM_WORK_BL_AST,
+ LDLM_WORK_CP_AST,
+ LDLM_WORK_REVOKE_AST
+} ldlm_desc_ast_t;
+
+void ldlm_grant_lock(struct ldlm_lock *lock, cfs_list_t *work_list);
struct ldlm_lock *
-ldlm_lock_create(struct ldlm_namespace *ns,
- struct lustre_handle *parent_lock_handle, struct ldlm_res_id,
- __u32 type, ldlm_mode_t, ldlm_blocking_callback,
- ldlm_completion_callback, ldlm_glimpse_callback, void *data,
- __u32 lvb_len);
+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);
ldlm_error_t ldlm_lock_enqueue(struct ldlm_namespace *, struct ldlm_lock **,
void *cookie, int *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,
- void *data, int datalen);
-int ldlm_reprocess_queue(struct ldlm_resource *res, struct list_head *queue);
-int ldlm_run_ast_work(struct ldlm_namespace *, struct list_head *rpc_list);
+ 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(struct ldlm_namespace *ns, cfs_list_t *rpc_list,
+ ldlm_desc_ast_t ast_type);
+int ldlm_lock_remove_from_lru(struct ldlm_lock *lock);
+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);
+void ldlm_lock_touch_in_lru(struct ldlm_lock *lock);
+void ldlm_lock_destroy_nolock(struct ldlm_lock *lock);
+
+void ldlm_cancel_locks_for_export(struct obd_export *export);
/* ldlm_lockd.c */
-int ldlm_bl_to_thread(struct ldlm_namespace *ns, struct ldlm_lock_desc *ld,
- struct ldlm_lock *lock);
+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);
+
+void ldlm_handle_bl_callback(struct ldlm_namespace *ns,
+ struct ldlm_lock_desc *ld, struct ldlm_lock *lock);
/* ldlm_plain.c */
int ldlm_process_plain_lock(struct ldlm_lock *lock, int *flags, int first_enq,
- ldlm_error_t *err);
+ ldlm_error_t *err, cfs_list_t *work_list);
/* ldlm_extent.c */
int ldlm_process_extent_lock(struct ldlm_lock *lock, int *flags, int first_enq,
- ldlm_error_t *err);
+ ldlm_error_t *err, cfs_list_t *work_list);
+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 *lock, int *flags, int first_enq,
- ldlm_error_t *err);
+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);
/* l_lock.c */
+void l_check_ns_lock(struct ldlm_namespace *ns);
void l_check_no_ns_lock(struct ldlm_namespace *ns);
-extern struct proc_dir_entry *ldlm_svc_proc_dir;
+extern cfs_proc_dir_entry_t *ldlm_svc_proc_dir;
+extern cfs_proc_dir_entry_t *ldlm_type_proc_dir;
struct ldlm_state {
struct ptlrpc_service *ldlm_cb_service;
struct ldlm_bl_pool *ldlm_bl_pool;
};
+/* interval tree, for LDLM_EXTENT. */
+extern cfs_mem_cache_t *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);
+extern void ldlm_interval_free(struct ldlm_interval *node);
+/* this function must be called with res lock held */
+static inline struct ldlm_extent *
+ldlm_interval_extent(struct ldlm_interval *node)
+{
+ struct ldlm_lock *lock;
+ LASSERT(!cfs_list_empty(&node->li_group));
+
+ lock = cfs_list_entry(node->li_group.next, struct ldlm_lock,
+ l_sl_policy);
+ return &lock->l_policy_data.l_extent;
+}
+
int ldlm_init(void);
void ldlm_exit(void);
+enum ldlm_policy_res {
+ LDLM_POLICY_CANCEL_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 < 0) { \
+ 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 */
+
+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 | LDLM_FL_CANCEL)))
+ 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);