diff options
Diffstat (limited to 'drivers/staging/lustre/lustre/osc/osc_internal.h')
| -rw-r--r-- | drivers/staging/lustre/lustre/osc/osc_internal.h | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/drivers/staging/lustre/lustre/osc/osc_internal.h b/drivers/staging/lustre/lustre/osc/osc_internal.h new file mode 100644 index 000000000000..efc5db47c260 --- /dev/null +++ b/drivers/staging/lustre/lustre/osc/osc_internal.h @@ -0,0 +1,208 @@ +/* + * 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; + + obd_off 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 <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, + int *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); + +#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 || 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; + obd_uid 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[], + obd_flag valid, obd_flag 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 */ |