| /* |
| * 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, 2012, Intel Corporation. |
| */ |
| /* |
| * This file is part of Lustre, http://www.lustre.org/ |
| * Lustre is a trademark of Sun Microsystems, Inc. |
| */ |
| |
| #ifndef OSC_INTERNAL_H |
| #define 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 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_rpc_item; |
| |
| u64 oap_obj_off; |
| unsigned oap_page_off; |
| enum async_flags oap_async_flags; |
| |
| struct brw_page oap_brw_page; |
| |
| struct ptlrpc_request *oap_request; |
| struct client_obd *oap_cli; |
| struct osc_object *oap_obj; |
| |
| struct ldlm_lock *oap_ldlm_lock; |
| spinlock_t oap_lock; |
| }; |
| |
| #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; |
| struct osc_async_page *ocw_oap; |
| int ocw_grant; |
| int ocw_rc; |
| }; |
| |
| int osc_create(const struct lu_env *env, struct obd_export *exp, |
| struct obdo *oa, 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); |
| void osc_wake_cache_waiters(struct client_obd *cli); |
| int osc_shrink_grant_to_target(struct client_obd *cli, __u64 target_bytes); |
| void osc_update_next_shrink(struct client_obd *cli); |
| |
| /* |
| * cl integration. |
| */ |
| #include "../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, |
| __u64 *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 agl); |
| int osc_cancel_base(struct lustre_handle *lockh, __u32 mode); |
| |
| int osc_match_base(struct obd_export *exp, struct ldlm_res_id *res_id, |
| __u32 type, ldlm_policy_data_t *policy, __u32 mode, |
| __u64 *flags, void *data, struct lustre_handle *lockh, |
| int unref); |
| |
| int osc_setattr_async_base(struct obd_export *exp, struct obd_info *oinfo, |
| struct obd_trans_info *oti, |
| obd_enqueue_update_f upcall, void *cookie, |
| struct ptlrpc_request_set *rqset); |
| int osc_punch_base(struct obd_export *exp, struct obd_info *oinfo, |
| obd_enqueue_update_f upcall, void *cookie, |
| struct ptlrpc_request_set *rqset); |
| int osc_sync_base(struct obd_export *exp, struct obd_info *oinfo, |
| obd_enqueue_update_f upcall, void *cookie, |
| struct ptlrpc_request_set *rqset); |
| |
| int osc_process_config_base(struct obd_device *obd, struct lustre_cfg *cfg); |
| int osc_build_rpc(const struct lu_env *env, struct client_obd *cli, |
| struct list_head *ext_list, int cmd, pdl_policy_t p); |
| int osc_lru_shrink(struct client_obd *cli, int target); |
| |
| extern spinlock_t osc_ast_guard; |
| |
| int osc_cleanup(struct obd_device *obd); |
| int osc_setup(struct obd_device *obd, struct lustre_cfg *lcfg); |
| |
| #if defined (CONFIG_PROC_FS) |
| 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 || rc == -EINPROGRESS); |
| } |
| |
| static inline unsigned long rpcs_in_flight(struct client_obd *cli) |
| { |
| return cli->cl_r_in_flight + cli->cl_w_in_flight; |
| } |
| |
| #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); |
| } |
| |
| int osc_dlm_lock_pageref(struct ldlm_lock *dlm); |
| |
| extern struct kmem_cache *osc_quota_kmem; |
| struct osc_quota_info { |
| /** linkage for quota hash table */ |
| struct hlist_node oqi_hash; |
| u32 oqi_id; |
| }; |
| int osc_quota_setup(struct obd_device *obd); |
| int osc_quota_cleanup(struct obd_device *obd); |
| int osc_quota_setdq(struct client_obd *cli, const unsigned int qid[], |
| u32 valid, u32 flags); |
| int osc_quota_chkdq(struct client_obd *cli, const unsigned int qid[]); |
| int osc_quotactl(struct obd_device *unused, struct obd_export *exp, |
| struct obd_quotactl *oqctl); |
| int osc_quotacheck(struct obd_device *unused, struct obd_export *exp, |
| struct obd_quotactl *oqctl); |
| int osc_quota_poll_check(struct obd_export *exp, struct if_quotacheck *qchk); |
| |
| #endif /* OSC_INTERNAL_H */ |