/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=8:tabstop=8:
*
- * Copyright (C) 2003 Cluster File Systems, Inc.
+ * GPL HEADER START
*
- * This code is issued under the GNU General Public License.
- * See the file COPYING in this distribution
+ * 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 2008 Sun Microsystems, Inc. All rights reserved
+ * Use is subject to license terms.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
*/
#ifndef OSC_INTERNAL_H
#define OAP_MAGIC 8675309
+struct lu_env;
+
+enum async_flags {
+ ASYNC_READY = 0x1, /* ap_make_ready will not be called before this
+ page is added to an rpc */
+ ASYNC_URGENT = 0x2, /* page must be put into an RPC before return */
+ ASYNC_COUNT_STABLE = 0x4, /* ap_refresh_count will not be called
+ to give the caller a chance to update
+ or cancel the size of the io */
+ ASYNC_HP = 0x10,
+};
+
+struct obd_async_page_ops {
+ int (*ap_make_ready)(const struct lu_env *env, void *data, int cmd);
+ int (*ap_refresh_count)(const struct lu_env *env, void *data, int cmd);
+ int (*ap_completion)(const struct lu_env *env,
+ void *data, int cmd, struct obdo *oa, int rc);
+};
+
struct osc_async_page {
int oap_magic;
+ unsigned short oap_cmd;
+ unsigned short oap_interrupted:1;
+
struct list_head oap_pending_item;
struct list_head oap_urgent_item;
struct list_head oap_rpc_item;
- struct page *oap_page;
- int oap_cmd;
obd_off oap_obj_off;
- obd_off oap_page_off;
- int oap_count;
- obd_flags oap_brw_flags;
+ unsigned oap_page_off;
enum async_flags oap_async_flags;
- unsigned long oap_interrupted:1;
- struct obd_io_group *oap_oig;
- struct oig_callback_context oap_occ;
+ struct brw_page oap_brw_page;
+
struct ptlrpc_request *oap_request;
struct client_obd *oap_cli;
struct lov_oinfo *oap_loi;
- struct obd_async_page_ops *oap_caller_ops;
- void *oap_caller_data;
+ const struct obd_async_page_ops *oap_caller_ops;
+ void *oap_caller_data;
+ struct list_head oap_page_list;
+ struct ldlm_lock *oap_ldlm_lock;
+ spinlock_t oap_lock;
};
-#define OAP_FROM_COOKIE(c) \
- (LASSERT(((struct osc_async_page *)(c))->oap_magic == OAP_MAGIC), \
- (struct osc_async_page *)(c))
+#define oap_page oap_brw_page.pg
+#define oap_count oap_brw_page.count
+#define oap_brw_flags oap_brw_page.flag
struct osc_cache_waiter {
struct list_head ocw_entry;
- wait_queue_head_t ocw_waitq;
+ cfs_waitq_t ocw_waitq;
struct osc_async_page *ocw_oap;
int ocw_rc;
};
#define OSCC_FLAG_LOW 0x10
#define OSCC_FLAG_EXITING 0x20
+int osc_precreate(struct obd_export *exp);
int osc_create(struct obd_export *exp, struct obdo *oa,
- struct lov_stripe_md **ea, struct obd_trans_info *oti);
+ struct lov_stripe_md **ea, struct obd_trans_info *oti);
int osc_real_create(struct obd_export *exp, struct obdo *oa,
- struct lov_stripe_md **ea, struct obd_trans_info *oti);
+ struct lov_stripe_md **ea, struct obd_trans_info *oti);
void oscc_init(struct obd_device *obd);
void osc_wake_cache_waiters(struct client_obd *cli);
+int osc_shrink_grant_to_target(struct client_obd *cli, long target);
+
+/*
+ * cl integration.
+ */
+#include <cl_object.h>
+
+extern struct ptlrpc_request_set *PTLRPCD_SET;
+
+int osc_enqueue_base(struct obd_export *exp, struct ldlm_res_id *res_id,
+ int *flags, ldlm_policy_data_t *policy,
+ struct ost_lvb *lvb, int kms_valid,
+ obd_enqueue_update_f upcall,
+ void *cookie, struct ldlm_enqueue_info *einfo,
+ struct lustre_handle *lockh,
+ struct ptlrpc_request_set *rqset, int async);
+int osc_cancel_base(struct lustre_handle *lockh, __u32 mode);
-#ifdef __KERNEL__
+int osc_match_base(struct obd_export *exp, struct ldlm_res_id *res_id,
+ __u32 type, ldlm_policy_data_t *policy, __u32 mode,
+ int *flags, void *data, struct lustre_handle *lockh,
+ int unref);
+
+int osc_punch_base(struct obd_export *exp, struct obdo *oa,
+ struct obd_capa *capa,
+ obd_enqueue_update_f upcall, void *cookie,
+ struct ptlrpc_request_set *rqset);
+
+int osc_prep_async_page(struct obd_export *exp, struct lov_stripe_md *lsm,
+ struct lov_oinfo *loi, cfs_page_t *page,
+ obd_off offset, const struct obd_async_page_ops *ops,
+ void *data, void **res, int nocache,
+ struct lustre_handle *lockh);
+void osc_oap_to_pending(struct osc_async_page *oap);
+int osc_oap_interrupted(const struct lu_env *env, struct osc_async_page *oap);
+void loi_list_maint(struct client_obd *cli, struct lov_oinfo *loi);
+void osc_check_rpcs(const struct lu_env *env, struct client_obd *cli);
+
+int osc_queue_async_io(const struct lu_env *env,
+ struct obd_export *exp, struct lov_stripe_md *lsm,
+ struct lov_oinfo *loi, void *cookie,
+ int cmd, obd_off off, int count,
+ obd_flag brw_flags, enum async_flags async_flags);
+int osc_teardown_async_page(struct obd_export *exp,
+ struct lov_stripe_md *lsm,
+ struct lov_oinfo *loi, void *cookie);
+int osc_process_config_base(struct obd_device *obd, struct lustre_cfg *cfg);
+int osc_set_async_flags_base(struct client_obd *cli,
+ struct lov_oinfo *loi, struct osc_async_page *oap,
+ obd_flag async_flags);
+int osc_enter_cache_try(const struct lu_env *env,
+ struct client_obd *cli, struct lov_oinfo *loi,
+ struct osc_async_page *oap, int transient);
+
+struct cl_page *osc_oap2cl_page(struct osc_async_page *oap);
+extern spinlock_t osc_ast_guard;
+
+int osc_cleanup(struct obd_device *obd);
+int osc_setup(struct obd_device *obd, struct lustre_cfg *lcfg);
+
+#ifdef LPROCFS
int lproc_osc_attach_seqstat(struct obd_device *dev);
+void lprocfs_osc_init_vars(struct lprocfs_static_vars *lvars);
#else
static inline int lproc_osc_attach_seqstat(struct obd_device *dev) {return 0;}
+static inline void lprocfs_osc_init_vars(struct lprocfs_static_vars *lvars)
+{
+ memset(lvars, 0, sizeof(*lvars));
+}
#endif
+extern struct lu_device_type osc_device_type;
+
+static inline int osc_recoverable_error(int rc)
+{
+ return (rc == -EIO || rc == -EROFS || rc == -ENOMEM || rc == -EAGAIN);
+}
+
+/* return 1 if osc should be resend request */
+static inline int osc_should_resend(int resend, struct client_obd *cli)
+{
+ return atomic_read(&cli->cl_resends) ?
+ atomic_read(&cli->cl_resends) > resend : 1;
+}
+
+#ifndef min_t
+#define min_t(type,x,y) \
+ ({ type __x = (x); type __y = (y); __x < __y ? __x: __y; })
+#endif
+
+struct osc_device {
+ struct cl_device od_cl;
+ struct obd_export *od_exp;
+
+ /* Write stats is actually protected by client_obd's lock. */
+ struct osc_stats {
+ uint64_t os_lockless_writes; /* by bytes */
+ uint64_t os_lockless_reads; /* by bytes */
+ uint64_t os_lockless_truncates; /* by times */
+ } od_stats;
+
+ /* configuration item(s) */
+ int od_contention_time;
+ int od_lockless_truncate;
+};
+
+static inline struct osc_device *obd2osc_dev(const struct obd_device *d)
+{
+ return container_of0(d->obd_lu_dev, struct osc_device, od_cl.cd_lu_dev);
+}
+
+
#endif /* OSC_INTERNAL_H */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff