X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=blobdiff_plain;f=lustre%2Fosc%2Fosc_internal.h;h=9b11a9dbb65802d9702e15605e6f01d9a4d04bc4;hp=30dae54217756bd9e43f1c0ea51a8bb842f0176b;hb=9f3f665577797660984bc1b6cbd443111dceef49;hpb=5e54279d5d30d14d6499152741df9db55597722f diff --git a/lustre/osc/osc_internal.h b/lustre/osc/osc_internal.h index 30dae54..9b11a9d 100644 --- a/lustre/osc/osc_internal.h +++ b/lustre/osc/osc_internal.h @@ -1,66 +1,227 @@ /* -*- 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 (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. */ #ifndef OSC_INTERNAL_H #define OSC_INTERNAL_H -#include /* for PTL_MTU and PTL_MD_MAX_PAGES */ +#define OAP_MAGIC 8675309 -/* bug 1578: negotiate BRW_MAX_SIZE with the OST, instead of hard-coding it */ -#define OSC_BRW_MAX_SIZE PTL_MTU -#define OSC_BRW_MAX_IOV PTL_MD_MAX_PAGES +struct lu_env; -#define OAP_MAGIC 8675309 +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; - 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; + unsigned short oap_cmd; + unsigned short oap_interrupted:1; + + cfs_list_t oap_pending_item; + cfs_list_t oap_urgent_item; + cfs_list_t oap_rpc_item; obd_off oap_obj_off; - obd_off oap_page_off; - int oap_count; - obd_flag oap_brw_flags; + unsigned oap_page_off; enum async_flags oap_async_flags; - struct obd_sync_io_container *oap_osic; + 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; + cfs_list_t oap_page_list; + struct ldlm_lock *oap_ldlm_lock; + cfs_spinlock_t oap_lock; }; -#define OSCC_FLAG_RECOVERING 1 -#define OSCC_FLAG_CREATING 2 -#define OSCC_FLAG_NOSPC 4 /* can't create more objects on this OST */ +#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 { + cfs_list_t ocw_entry; + cfs_waitq_t ocw_waitq; + struct osc_async_page *ocw_oap; + int ocw_rc; +}; +#define OSCC_FLAG_RECOVERING 0x01 +#define OSCC_FLAG_CREATING 0x02 +#define OSCC_FLAG_NOSPC 0x04 /* can't create more objects on OST */ +#define OSCC_FLAG_SYNC_IN_PROGRESS 0x08 /* only allow one thread to sync */ +#define OSCC_FLAG_LOW 0x10 +#define OSCC_FLAG_EXITING 0x20 +#define OSCC_FLAG_DEGRADED 0x40 +#define OSCC_FLAG_RDONLY 0x80 +#define OSCC_FLAG_NOSPC_BLK 0x100 /* no more block space on OST */ + +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_create_async(struct obd_export *exp, struct obd_info *oinfo, + 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 oscc_init(struct obd_export *exp); -void osc_adjust_cache(struct client_obd *cli); - -#ifdef __KERNEL__ + 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 + +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); + +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_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, + struct osc_async_page *oap, int cmd, int 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, struct osc_async_page *oap); +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 cfs_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 lproc_osc_hist(struct osc_histogram *oh, unsigned int value); -void lproc_osc_hist_pow2(struct osc_histogram *oh, unsigned int value); +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 -#else /* !__KERNEL__ */ +extern struct lu_device_type osc_device_type; -#define lproc_osc_attach_seqstat(dev) (0) -#define lproc_osc_hist(o,v) do{}while(0) -#define lproc_osc_hist_pow2(o, v) do{}while(0) +static inline int osc_recoverable_error(int rc) +{ + return (rc == -EIO || rc == -EROFS || rc == -ENOMEM || rc == -EAGAIN); +} +#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); + #endif /* OSC_INTERNAL_H */