| /* |
| * 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) 2007, 2010, Oracle and/or its affiliates. All rights reserved. |
| * Use is subject to license terms. |
| * |
| * Copyright (c) 2011, 2015, Intel Corporation. |
| */ |
| /* |
| * This file is part of Lustre, http://www.lustre.org/ |
| * Lustre is a trademark of Sun Microsystems, Inc. |
| */ |
| |
| #ifndef __OBD_H |
| #define __OBD_H |
| |
| #include <linux/spinlock.h> |
| |
| #define IOC_OSC_TYPE 'h' |
| #define IOC_OSC_MIN_NR 20 |
| #define IOC_OSC_SET_ACTIVE _IOWR(IOC_OSC_TYPE, 21, struct obd_device *) |
| #define IOC_OSC_MAX_NR 50 |
| |
| #define IOC_MDC_TYPE 'i' |
| #define IOC_MDC_MIN_NR 20 |
| #define IOC_MDC_MAX_NR 50 |
| |
| #include "lustre/lustre_idl.h" |
| #include "lustre_lib.h" |
| #include "lu_ref.h" |
| #include "lustre_export.h" |
| #include "lustre_fid.h" |
| #include "lustre_fld.h" |
| #include "lustre_intent.h" |
| |
| #define MAX_OBD_DEVICES 8192 |
| |
| struct osc_async_rc { |
| int ar_rc; |
| int ar_force_sync; |
| __u64 ar_min_xid; |
| }; |
| |
| struct lov_oinfo { /* per-stripe data structure */ |
| struct ost_id loi_oi; /* object ID/Sequence on the target OST */ |
| int loi_ost_idx; /* OST stripe index in lov_tgt_desc->tgts */ |
| int loi_ost_gen; /* generation of this loi_ost_idx */ |
| |
| unsigned long loi_kms_valid:1; |
| __u64 loi_kms; /* known minimum size */ |
| struct ost_lvb loi_lvb; |
| struct osc_async_rc loi_ar; |
| }; |
| |
| static inline void loi_kms_set(struct lov_oinfo *oinfo, __u64 kms) |
| { |
| oinfo->loi_kms = kms; |
| oinfo->loi_kms_valid = 1; |
| } |
| |
| static inline void loi_init(struct lov_oinfo *loi) |
| { |
| } |
| |
| struct lov_stripe_md { |
| atomic_t lsm_refc; |
| spinlock_t lsm_lock; |
| pid_t lsm_lock_owner; /* debugging */ |
| |
| /* maximum possible file size, might change as OSTs status changes, |
| * e.g. disconnected, deactivated |
| */ |
| __u64 lsm_maxbytes; |
| struct { |
| /* Public members. */ |
| struct ost_id lw_object_oi; /* lov object id/seq */ |
| |
| /* LOV-private members start here -- only for use in lov/. */ |
| __u32 lw_magic; |
| __u32 lw_stripe_size; /* size of the stripe */ |
| __u32 lw_pattern; /* striping pattern (RAID0, RAID1) */ |
| __u16 lw_stripe_count; /* number of objects being striped over */ |
| __u16 lw_layout_gen; /* generation of the layout */ |
| char lw_pool_name[LOV_MAXPOOLNAME]; /* pool name */ |
| } lsm_wire; |
| |
| struct lov_oinfo *lsm_oinfo[0]; |
| }; |
| |
| #define lsm_oi lsm_wire.lw_object_oi |
| #define lsm_magic lsm_wire.lw_magic |
| #define lsm_layout_gen lsm_wire.lw_layout_gen |
| #define lsm_stripe_size lsm_wire.lw_stripe_size |
| #define lsm_pattern lsm_wire.lw_pattern |
| #define lsm_stripe_count lsm_wire.lw_stripe_count |
| #define lsm_pool_name lsm_wire.lw_pool_name |
| |
| static inline bool lsm_is_released(struct lov_stripe_md *lsm) |
| { |
| return !!(lsm->lsm_pattern & LOV_PATTERN_F_RELEASED); |
| } |
| |
| static inline bool lsm_has_objects(struct lov_stripe_md *lsm) |
| { |
| if (!lsm) |
| return false; |
| if (lsm_is_released(lsm)) |
| return false; |
| return true; |
| } |
| |
| static inline int lov_stripe_md_size(unsigned int stripe_count) |
| { |
| struct lov_stripe_md lsm; |
| |
| return sizeof(lsm) + stripe_count * sizeof(lsm.lsm_oinfo[0]); |
| } |
| |
| struct obd_info; |
| |
| typedef int (*obd_enqueue_update_f)(void *cookie, int rc); |
| |
| /* obd info for a particular level (lov, osc). */ |
| struct obd_info { |
| /* Flags used for set request specific flags: |
| - while lock handling, the flags obtained on the enqueue |
| request are set here. |
| - while stats, the flags used for control delay/resend. |
| - while setattr, the flags used for distinguish punch operation |
| */ |
| __u64 oi_flags; |
| /* lsm data specific for every OSC. */ |
| struct lov_stripe_md *oi_md; |
| /* obdo data specific for every OSC, if needed at all. */ |
| struct obdo *oi_oa; |
| /* statfs data specific for every OSC, if needed at all. */ |
| struct obd_statfs *oi_osfs; |
| /* An update callback which is called to update some data on upper |
| * level. E.g. it is used for update lsm->lsm_oinfo at every received |
| * request in osc level for enqueue requests. It is also possible to |
| * update some caller data from LOV layer if needed. |
| */ |
| obd_enqueue_update_f oi_cb_up; |
| }; |
| |
| struct obd_type { |
| struct list_head typ_chain; |
| struct obd_ops *typ_dt_ops; |
| struct md_ops *typ_md_ops; |
| struct dentry *typ_debugfs_entry; |
| char *typ_name; |
| int typ_refcnt; |
| struct lu_device_type *typ_lu; |
| spinlock_t obd_type_lock; |
| struct kobject *typ_kobj; |
| }; |
| |
| struct brw_page { |
| u64 off; |
| struct page *pg; |
| int count; |
| u32 flag; |
| }; |
| |
| /* llog contexts */ |
| enum llog_ctxt_id { |
| LLOG_CONFIG_ORIG_CTXT = 0, |
| LLOG_CONFIG_REPL_CTXT, |
| LLOG_MDS_OST_ORIG_CTXT, |
| LLOG_MDS_OST_REPL_CTXT, |
| LLOG_SIZE_ORIG_CTXT, |
| LLOG_SIZE_REPL_CTXT, |
| LLOG_RD1_ORIG_CTXT, |
| LLOG_RD1_REPL_CTXT, |
| LLOG_TEST_ORIG_CTXT, |
| LLOG_TEST_REPL_CTXT, |
| LLOG_LOVEA_ORIG_CTXT, |
| LLOG_LOVEA_REPL_CTXT, |
| LLOG_CHANGELOG_ORIG_CTXT, /**< changelog generation on mdd */ |
| LLOG_CHANGELOG_REPL_CTXT, /**< changelog access on clients */ |
| LLOG_CHANGELOG_USER_ORIG_CTXT, /**< for multiple changelog consumers */ |
| LLOG_AGENT_ORIG_CTXT, /**< agent requests generation on cdt */ |
| LLOG_MAX_CTXTS |
| }; |
| |
| struct timeout_item { |
| enum timeout_event ti_event; |
| unsigned long ti_timeout; |
| timeout_cb_t ti_cb; |
| void *ti_cb_data; |
| struct list_head ti_obd_list; |
| struct list_head ti_chain; |
| }; |
| |
| #define OSC_MAX_RIF_DEFAULT 8 |
| #define OSC_MAX_RIF_MAX 256 |
| #define OSC_MAX_DIRTY_DEFAULT (OSC_MAX_RIF_DEFAULT * 4) |
| #define OSC_MAX_DIRTY_MB_MAX 2048 /* arbitrary, but < MAX_LONG bytes */ |
| #define OSC_DEFAULT_RESENDS 10 |
| |
| /* possible values for fo_sync_lock_cancel */ |
| enum { |
| NEVER_SYNC_ON_CANCEL = 0, |
| BLOCKING_SYNC_ON_CANCEL = 1, |
| ALWAYS_SYNC_ON_CANCEL = 2, |
| NUM_SYNC_ON_CANCEL_STATES |
| }; |
| |
| #define MDC_MAX_RIF_DEFAULT 8 |
| #define MDC_MAX_RIF_MAX 512 |
| |
| struct mdc_rpc_lock; |
| struct obd_import; |
| struct client_obd { |
| struct rw_semaphore cl_sem; |
| struct obd_uuid cl_target_uuid; |
| struct obd_import *cl_import; /* ptlrpc connection state */ |
| int cl_conn_count; |
| /* max_mds_easize is purely a performance thing so we don't have to |
| * call obd_size_diskmd() all the time. |
| */ |
| int cl_default_mds_easize; |
| int cl_max_mds_easize; |
| int cl_default_mds_cookiesize; |
| int cl_max_mds_cookiesize; |
| |
| enum lustre_sec_part cl_sp_me; |
| enum lustre_sec_part cl_sp_to; |
| struct sptlrpc_flavor cl_flvr_mgc; /* fixed flavor of mgc->mgs */ |
| |
| /* the grant values are protected by loi_list_lock below */ |
| long cl_dirty; /* all _dirty_ in bytes */ |
| long cl_dirty_max; /* allowed w/o rpc */ |
| long cl_dirty_transit; /* dirty synchronous */ |
| long cl_avail_grant; /* bytes of credit for ost */ |
| long cl_lost_grant; /* lost credits (trunc) */ |
| |
| /* since we allocate grant by blocks, we don't know how many grant will |
| * be used to add a page into cache. As a solution, we reserve maximum |
| * grant before trying to dirty a page and unreserve the rest. |
| * See osc_{reserve|unreserve}_grant for details. |
| */ |
| long cl_reserved_grant; |
| struct list_head cl_cache_waiters; /* waiting for cache/grant */ |
| unsigned long cl_next_shrink_grant; /* jiffies */ |
| struct list_head cl_grant_shrink_list; /* Timeout event list */ |
| int cl_grant_shrink_interval; /* seconds */ |
| |
| /* A chunk is an optimal size used by osc_extent to determine |
| * the extent size. A chunk is max(PAGE_SIZE, OST block size) |
| */ |
| int cl_chunkbits; |
| int cl_chunk; |
| int cl_extent_tax; /* extent overhead, by bytes */ |
| |
| /* keep track of objects that have lois that contain pages which |
| * have been queued for async brw. this lock also protects the |
| * lists of osc_client_pages that hang off of the loi |
| */ |
| /* |
| * ->cl_loi_list_lock protects consistency of |
| * ->cl_loi_{ready,read,write}_list. ->ap_make_ready() and |
| * ->ap_completion() call-backs are executed under this lock. As we |
| * cannot guarantee that these call-backs never block on all platforms |
| * (as a matter of fact they do block on Mac OS X), type of |
| * ->cl_loi_list_lock is platform dependent: it's a spin-lock on Linux |
| * and blocking mutex on Mac OS X. (Alternative is to make this lock |
| * blocking everywhere, but we don't want to slow down fast-path of |
| * our main platform.) |
| * |
| * NB by Jinshan: though field names are still _loi_, but actually |
| * osc_object{}s are in the list. |
| */ |
| spinlock_t cl_loi_list_lock; |
| struct list_head cl_loi_ready_list; |
| struct list_head cl_loi_hp_ready_list; |
| struct list_head cl_loi_write_list; |
| struct list_head cl_loi_read_list; |
| int cl_r_in_flight; |
| int cl_w_in_flight; |
| /* just a sum of the loi/lop pending numbers to be exported by sysfs */ |
| atomic_t cl_pending_w_pages; |
| atomic_t cl_pending_r_pages; |
| __u32 cl_max_pages_per_rpc; |
| int cl_max_rpcs_in_flight; |
| struct obd_histogram cl_read_rpc_hist; |
| struct obd_histogram cl_write_rpc_hist; |
| struct obd_histogram cl_read_page_hist; |
| struct obd_histogram cl_write_page_hist; |
| struct obd_histogram cl_read_offset_hist; |
| struct obd_histogram cl_write_offset_hist; |
| |
| /* lru for osc caching pages */ |
| struct cl_client_cache *cl_cache; |
| struct list_head cl_lru_osc; /* member of cl_cache->ccc_lru */ |
| atomic_t *cl_lru_left; |
| atomic_t cl_lru_busy; |
| atomic_t cl_lru_shrinkers; |
| atomic_t cl_lru_in_list; |
| struct list_head cl_lru_list; /* lru page list */ |
| spinlock_t cl_lru_list_lock; /* page list protector */ |
| atomic_t cl_unstable_count; |
| |
| /* number of in flight destroy rpcs is limited to max_rpcs_in_flight */ |
| atomic_t cl_destroy_in_flight; |
| wait_queue_head_t cl_destroy_waitq; |
| |
| struct mdc_rpc_lock *cl_rpc_lock; |
| struct mdc_rpc_lock *cl_close_lock; |
| |
| /* mgc datastruct */ |
| atomic_t cl_mgc_refcount; |
| struct obd_export *cl_mgc_mgsexp; |
| |
| /* checksumming for data sent over the network */ |
| unsigned int cl_checksum:1; /* 0 = disabled, 1 = enabled */ |
| /* supported checksum types that are worked out at connect time */ |
| __u32 cl_supp_cksum_types; |
| /* checksum algorithm to be used */ |
| enum cksum_type cl_cksum_type; |
| |
| /* also protected by the poorly named _loi_list_lock lock above */ |
| struct osc_async_rc cl_ar; |
| |
| /* used by quotacheck when the servers are older than 2.4 */ |
| int cl_qchk_stat; /* quotacheck stat of the peer */ |
| #define CL_NOT_QUOTACHECKED 1 /* client->cl_qchk_stat init value */ |
| #if LUSTRE_VERSION_CODE >= OBD_OCD_VERSION(2, 7, 50, 0) |
| #warning "please consider removing quotacheck compatibility code" |
| #endif |
| |
| /* sequence manager */ |
| struct lu_client_seq *cl_seq; |
| |
| atomic_t cl_resends; /* resend count */ |
| |
| /* ptlrpc work for writeback in ptlrpcd context */ |
| void *cl_writeback_work; |
| void *cl_lru_work; |
| /* hash tables for osc_quota_info */ |
| struct cfs_hash *cl_quota_hash[MAXQUOTAS]; |
| }; |
| |
| #define obd2cli_tgt(obd) ((char *)(obd)->u.cli.cl_target_uuid.uuid) |
| |
| struct obd_id_info { |
| __u32 idx; |
| u64 *data; |
| }; |
| |
| struct echo_client_obd { |
| struct obd_export *ec_exp; /* the local connection to osc/lov */ |
| spinlock_t ec_lock; |
| struct list_head ec_objects; |
| struct list_head ec_locks; |
| __u64 ec_unique; |
| }; |
| |
| /* Generic subset of OSTs */ |
| struct ost_pool { |
| __u32 *op_array; /* array of index of lov_obd->lov_tgts */ |
| unsigned int op_count; /* number of OSTs in the array */ |
| unsigned int op_size; /* allocated size of lp_array */ |
| struct rw_semaphore op_rw_sem; /* to protect ost_pool use */ |
| }; |
| |
| /* allow statfs data caching for 1 second */ |
| #define OBD_STATFS_CACHE_SECONDS 1 |
| |
| struct lov_tgt_desc { |
| struct list_head ltd_kill; |
| struct obd_uuid ltd_uuid; |
| struct obd_device *ltd_obd; |
| struct obd_export *ltd_exp; |
| __u32 ltd_gen; |
| __u32 ltd_index; /* index in lov_obd->tgts */ |
| unsigned long ltd_active:1,/* is this target up for requests */ |
| ltd_activate:1,/* should target be activated */ |
| ltd_reap:1; /* should this target be deleted */ |
| }; |
| |
| struct lov_obd { |
| struct lov_desc desc; |
| struct lov_tgt_desc **lov_tgts; /* sparse array */ |
| struct ost_pool lov_packed; /* all OSTs in a packed array */ |
| struct mutex lov_lock; |
| struct obd_connect_data lov_ocd; |
| atomic_t lov_refcount; |
| __u32 lov_death_row;/* tgts scheduled to be deleted */ |
| __u32 lov_tgt_size; /* size of tgts array */ |
| int lov_connects; |
| int lov_pool_count; |
| struct cfs_hash *lov_pools_hash_body; /* used for key access */ |
| struct list_head lov_pool_list; /* used for sequential access */ |
| struct dentry *lov_pool_debugfs_entry; |
| enum lustre_sec_part lov_sp_me; |
| |
| /* Cached LRU and unstable data from upper layer */ |
| void *lov_cache; |
| |
| struct rw_semaphore lov_notify_lock; |
| |
| struct kobject *lov_tgts_kobj; |
| }; |
| |
| struct lmv_tgt_desc { |
| struct obd_uuid ltd_uuid; |
| struct obd_export *ltd_exp; |
| int ltd_idx; |
| struct mutex ltd_fid_mutex; |
| unsigned long ltd_active:1; /* target up for requests */ |
| }; |
| |
| enum placement_policy { |
| PLACEMENT_CHAR_POLICY = 0, |
| PLACEMENT_NID_POLICY = 1, |
| PLACEMENT_INVAL_POLICY = 2, |
| PLACEMENT_MAX_POLICY |
| }; |
| |
| struct lmv_obd { |
| int refcount; |
| struct lu_client_fld lmv_fld; |
| spinlock_t lmv_lock; |
| enum placement_policy lmv_placement; |
| struct lmv_desc desc; |
| struct obd_uuid cluuid; |
| struct obd_export *exp; |
| |
| struct mutex lmv_init_mutex; |
| int connected; |
| int max_easize; |
| int max_def_easize; |
| int max_cookiesize; |
| int max_def_cookiesize; |
| int server_timeout; |
| |
| int tgts_size; /* size of tgts array */ |
| struct lmv_tgt_desc **tgts; |
| |
| struct obd_connect_data conn_data; |
| struct kobject *lmv_tgts_kobj; |
| }; |
| |
| struct niobuf_local { |
| __u64 lnb_file_offset; |
| __u32 lnb_page_offset; |
| __u32 len; |
| __u32 flags; |
| struct page *page; |
| struct dentry *dentry; |
| int lnb_grant_used; |
| int rc; |
| }; |
| |
| #define LUSTRE_FLD_NAME "fld" |
| #define LUSTRE_SEQ_NAME "seq" |
| |
| #define LUSTRE_MDD_NAME "mdd" |
| #define LUSTRE_OSD_LDISKFS_NAME "osd-ldiskfs" |
| #define LUSTRE_OSD_ZFS_NAME "osd-zfs" |
| #define LUSTRE_VVP_NAME "vvp" |
| #define LUSTRE_LMV_NAME "lmv" |
| #define LUSTRE_SLP_NAME "slp" |
| #define LUSTRE_LOD_NAME "lod" |
| #define LUSTRE_OSP_NAME "osp" |
| #define LUSTRE_LWP_NAME "lwp" |
| |
| /* obd device type names */ |
| /* FIXME all the references to LUSTRE_MDS_NAME should be swapped with LUSTRE_MDT_NAME */ |
| #define LUSTRE_MDS_NAME "mds" |
| #define LUSTRE_MDT_NAME "mdt" |
| #define LUSTRE_MDC_NAME "mdc" |
| #define LUSTRE_OSS_NAME "ost" /* FIXME change name to oss */ |
| #define LUSTRE_OST_NAME "obdfilter" /* FIXME change name to ost */ |
| #define LUSTRE_OSC_NAME "osc" |
| #define LUSTRE_LOV_NAME "lov" |
| #define LUSTRE_MGS_NAME "mgs" |
| #define LUSTRE_MGC_NAME "mgc" |
| |
| #define LUSTRE_ECHO_NAME "obdecho" |
| #define LUSTRE_ECHO_CLIENT_NAME "echo_client" |
| #define LUSTRE_QMT_NAME "qmt" |
| |
| /* Constant obd names (post-rename) */ |
| #define LUSTRE_MDS_OBDNAME "MDS" |
| #define LUSTRE_OSS_OBDNAME "OSS" |
| #define LUSTRE_MGS_OBDNAME "MGS" |
| #define LUSTRE_MGC_OBDNAME "MGC" |
| |
| /* Don't conflict with on-wire flags OBD_BRW_WRITE, etc */ |
| #define N_LOCAL_TEMP_PAGE 0x10000000 |
| |
| struct obd_trans_info { |
| __u64 oti_transno; |
| __u64 oti_xid; |
| /* Only used on the server side for tracking acks. */ |
| struct oti_req_ack_lock { |
| struct lustre_handle lock; |
| __u32 mode; |
| } oti_ack_locks[4]; |
| void *oti_handle; |
| struct llog_cookie oti_onecookie; |
| struct llog_cookie *oti_logcookies; |
| int oti_numcookies; |
| /** synchronous write is needed */ |
| unsigned long oti_sync_write:1; |
| |
| /* initial thread handling transaction */ |
| struct ptlrpc_thread *oti_thread; |
| __u32 oti_conn_cnt; |
| /** VBR: versions */ |
| __u64 oti_pre_version; |
| /** JobID */ |
| char *oti_jobid; |
| |
| struct obd_uuid *oti_ost_uuid; |
| }; |
| |
| static inline void oti_alloc_cookies(struct obd_trans_info *oti, |
| int num_cookies) |
| { |
| if (!oti) |
| return; |
| |
| if (num_cookies == 1) |
| oti->oti_logcookies = &oti->oti_onecookie; |
| else |
| oti->oti_logcookies = libcfs_kvzalloc(num_cookies * sizeof(oti->oti_onecookie), |
| GFP_NOFS); |
| |
| oti->oti_numcookies = num_cookies; |
| } |
| |
| static inline void oti_free_cookies(struct obd_trans_info *oti) |
| { |
| if (!oti || !oti->oti_logcookies) |
| return; |
| |
| if (oti->oti_logcookies == &oti->oti_onecookie) |
| LASSERT(oti->oti_numcookies == 1); |
| else |
| kvfree(oti->oti_logcookies); |
| |
| oti->oti_logcookies = NULL; |
| oti->oti_numcookies = 0; |
| } |
| |
| /* |
| * Events signalled through obd_notify() upcall-chain. |
| */ |
| enum obd_notify_event { |
| /* target added */ |
| OBD_NOTIFY_CREATE, |
| /* Device connect start */ |
| OBD_NOTIFY_CONNECT, |
| /* Device activated */ |
| OBD_NOTIFY_ACTIVE, |
| /* Device deactivated */ |
| OBD_NOTIFY_INACTIVE, |
| /* Device disconnected */ |
| OBD_NOTIFY_DISCON, |
| /* Connect data for import were changed */ |
| OBD_NOTIFY_OCD, |
| /* Sync request */ |
| OBD_NOTIFY_SYNC_NONBLOCK, |
| OBD_NOTIFY_SYNC, |
| /* Configuration event */ |
| OBD_NOTIFY_CONFIG, |
| /* Administratively deactivate/activate event */ |
| OBD_NOTIFY_DEACTIVATE, |
| OBD_NOTIFY_ACTIVATE |
| }; |
| |
| /* |
| * Data structure used to pass obd_notify()-event to non-obd listeners (llite |
| * being main example). |
| */ |
| struct obd_notify_upcall { |
| int (*onu_upcall)(struct obd_device *host, struct obd_device *watched, |
| enum obd_notify_event ev, void *owner, void *data); |
| /* Opaque datum supplied by upper layer listener */ |
| void *onu_owner; |
| }; |
| |
| struct target_recovery_data { |
| svc_handler_t trd_recovery_handler; |
| pid_t trd_processing_task; |
| struct completion trd_starting; |
| struct completion trd_finishing; |
| }; |
| |
| struct obd_llog_group { |
| int olg_seq; |
| struct llog_ctxt *olg_ctxts[LLOG_MAX_CTXTS]; |
| wait_queue_head_t olg_waitq; |
| spinlock_t olg_lock; |
| struct mutex olg_cat_processing; |
| }; |
| |
| /* corresponds to one of the obd's */ |
| #define OBD_DEVICE_MAGIC 0XAB5CD6EF |
| #define OBD_DEV_BY_DEVNAME 0xffffd0de |
| |
| struct lvfs_run_ctxt { |
| struct dt_device *dt; |
| }; |
| |
| struct obd_device { |
| struct obd_type *obd_type; |
| __u32 obd_magic; |
| |
| /* common and UUID name of this device */ |
| char obd_name[MAX_OBD_NAME]; |
| struct obd_uuid obd_uuid; |
| |
| struct lu_device *obd_lu_dev; |
| |
| int obd_minor; |
| /* bitfield modification is protected by obd_dev_lock */ |
| unsigned long obd_attached:1, /* finished attach */ |
| obd_set_up:1, /* finished setup */ |
| obd_version_recov:1, /* obd uses version checking */ |
| obd_replayable:1,/* recovery is enabled; inform clients */ |
| obd_no_transno:1, /* no committed-transno notification */ |
| obd_no_recov:1, /* fail instead of retry messages */ |
| obd_stopping:1, /* started cleanup */ |
| obd_starting:1, /* started setup */ |
| obd_force:1, /* cleanup with > 0 obd refcount */ |
| obd_fail:1, /* cleanup with failover */ |
| obd_async_recov:1, /* allow asynchronous orphan cleanup */ |
| obd_no_conn:1, /* deny new connections */ |
| obd_inactive:1, /* device active/inactive |
| * (for sysfs status only!!) |
| */ |
| obd_no_ir:1, /* no imperative recovery. */ |
| obd_process_conf:1; /* device is processing mgs config */ |
| /* use separate field as it is set in interrupt to don't mess with |
| * protection of other bits using _bh lock |
| */ |
| unsigned long obd_recovery_expired:1; |
| /* uuid-export hash body */ |
| struct cfs_hash *obd_uuid_hash; |
| atomic_t obd_refcount; |
| wait_queue_head_t obd_refcount_waitq; |
| struct list_head obd_exports; |
| struct list_head obd_unlinked_exports; |
| struct list_head obd_delayed_exports; |
| int obd_num_exports; |
| spinlock_t obd_nid_lock; |
| struct ldlm_namespace *obd_namespace; |
| struct ptlrpc_client obd_ldlm_client; /* XXX OST/MDS only */ |
| /* a spinlock is OK for what we do now, may need a semaphore later */ |
| spinlock_t obd_dev_lock; /* protect OBD bitfield above */ |
| struct mutex obd_dev_mutex; |
| __u64 obd_last_committed; |
| spinlock_t obd_osfs_lock; |
| struct obd_statfs obd_osfs; /* locked by obd_osfs_lock */ |
| __u64 obd_osfs_age; |
| struct lvfs_run_ctxt obd_lvfs_ctxt; |
| struct obd_llog_group obd_olg; /* default llog group */ |
| struct obd_device *obd_observer; |
| struct rw_semaphore obd_observer_link_sem; |
| struct obd_notify_upcall obd_upcall; |
| struct obd_export *obd_self_export; |
| |
| union { |
| struct client_obd cli; |
| struct echo_client_obd echo_client; |
| struct lov_obd lov; |
| struct lmv_obd lmv; |
| } u; |
| /* Fields used by LProcFS */ |
| unsigned int obd_cntr_base; |
| struct lprocfs_stats *obd_stats; |
| |
| unsigned int md_cntr_base; |
| struct lprocfs_stats *md_stats; |
| |
| struct dentry *obd_debugfs_entry; |
| struct dentry *obd_svc_debugfs_entry; |
| struct lprocfs_stats *obd_svc_stats; |
| atomic_t obd_evict_inprogress; |
| wait_queue_head_t obd_evict_inprogress_waitq; |
| struct list_head obd_evict_list; /* protected with pet_lock */ |
| |
| /** |
| * Ldlm pool part. Save last calculated SLV and Limit. |
| */ |
| rwlock_t obd_pool_lock; |
| int obd_pool_limit; |
| __u64 obd_pool_slv; |
| |
| /** |
| * A list of outstanding class_incref()'s against this obd. For |
| * debugging. |
| */ |
| struct lu_ref obd_reference; |
| |
| int obd_conn_inprogress; |
| |
| struct kobject obd_kobj; /* sysfs object */ |
| struct completion obd_kobj_unregister; |
| }; |
| |
| #define OBD_LLOG_FL_SENDNOW 0x0001 |
| #define OBD_LLOG_FL_EXIT 0x0002 |
| |
| enum obd_cleanup_stage { |
| /* Special case hack for MDS LOVs */ |
| OBD_CLEANUP_EARLY, |
| /* can be directly mapped to .ldto_device_fini() */ |
| OBD_CLEANUP_EXPORTS, |
| }; |
| |
| /* get/set_info keys */ |
| #define KEY_ASYNC "async" |
| #define KEY_BLOCKSIZE_BITS "blocksize_bits" |
| #define KEY_BLOCKSIZE "blocksize" |
| #define KEY_CHANGELOG_CLEAR "changelog_clear" |
| #define KEY_FID2PATH "fid2path" |
| #define KEY_CHECKSUM "checksum" |
| #define KEY_CLEAR_FS "clear_fs" |
| #define KEY_CONN_DATA "conn_data" |
| #define KEY_EVICT_BY_NID "evict_by_nid" |
| #define KEY_FIEMAP "fiemap" |
| #define KEY_FLUSH_CTX "flush_ctx" |
| #define KEY_GRANT_SHRINK "grant_shrink" |
| #define KEY_HSM_COPYTOOL_SEND "hsm_send" |
| #define KEY_INIT_RECOV_BACKUP "init_recov_bk" |
| #define KEY_INIT_RECOV "initial_recov" |
| #define KEY_INTERMDS "inter_mds" |
| #define KEY_LAST_ID "last_id" |
| #define KEY_LAST_FID "last_fid" |
| #define KEY_LOCK_TO_STRIPE "lock_to_stripe" |
| #define KEY_LOVDESC "lovdesc" |
| #define KEY_LOV_IDX "lov_idx" |
| #define KEY_MAX_EASIZE "max_easize" |
| #define KEY_DEFAULT_EASIZE "default_easize" |
| #define KEY_MDS_CONN "mds_conn" |
| #define KEY_MGSSEC "mgssec" |
| #define KEY_NEXT_ID "next_id" |
| #define KEY_READ_ONLY "read-only" |
| #define KEY_REGISTER_TARGET "register_target" |
| #define KEY_SET_FS "set_fs" |
| #define KEY_TGT_COUNT "tgt_count" |
| /* KEY_SET_INFO in lustre_idl.h */ |
| #define KEY_SPTLRPC_CONF "sptlrpc_conf" |
| #define KEY_CONNECT_FLAG "connect_flags" |
| #define KEY_SYNC_LOCK_CANCEL "sync_lock_cancel" |
| |
| #define KEY_CACHE_SET "cache_set" |
| #define KEY_CACHE_LRU_SHRINK "cache_lru_shrink" |
| #define KEY_CHANGELOG_INDEX "changelog_index" |
| |
| struct lu_context; |
| |
| /* /!\ must be coherent with include/linux/namei.h on patched kernel */ |
| #define IT_OPEN (1 << 0) |
| #define IT_CREAT (1 << 1) |
| #define IT_READDIR (1 << 2) |
| #define IT_GETATTR (1 << 3) |
| #define IT_LOOKUP (1 << 4) |
| #define IT_UNLINK (1 << 5) |
| #define IT_TRUNC (1 << 6) |
| #define IT_GETXATTR (1 << 7) |
| #define IT_EXEC (1 << 8) |
| #define IT_PIN (1 << 9) |
| #define IT_LAYOUT (1 << 10) |
| #define IT_QUOTA_DQACQ (1 << 11) |
| #define IT_QUOTA_CONN (1 << 12) |
| #define IT_SETXATTR (1 << 13) |
| |
| static inline int it_to_lock_mode(struct lookup_intent *it) |
| { |
| /* CREAT needs to be tested before open (both could be set) */ |
| if (it->it_op & IT_CREAT) |
| return LCK_CW; |
| else if (it->it_op & (IT_READDIR | IT_GETATTR | IT_OPEN | IT_LOOKUP | |
| IT_LAYOUT)) |
| return LCK_CR; |
| else if (it->it_op & IT_GETXATTR) |
| return LCK_PR; |
| else if (it->it_op & IT_SETXATTR) |
| return LCK_PW; |
| |
| LASSERTF(0, "Invalid it_op: %d\n", it->it_op); |
| return -EINVAL; |
| } |
| |
| struct md_op_data { |
| struct lu_fid op_fid1; /* operation fid1 (usually parent) */ |
| struct lu_fid op_fid2; /* operation fid2 (usually child) */ |
| struct lu_fid op_fid3; /* 2 extra fids to find conflicting */ |
| struct lu_fid op_fid4; /* to the operation locks. */ |
| u32 op_mds; /* what mds server open will go to */ |
| struct lustre_handle op_handle; |
| s64 op_mod_time; |
| const char *op_name; |
| int op_namelen; |
| __u32 op_mode; |
| struct lmv_stripe_md *op_mea1; |
| struct lmv_stripe_md *op_mea2; |
| __u32 op_suppgids[2]; |
| __u32 op_fsuid; |
| __u32 op_fsgid; |
| cfs_cap_t op_cap; |
| void *op_data; |
| |
| /* iattr fields and blocks. */ |
| struct iattr op_attr; |
| unsigned int op_attr_flags; |
| __u64 op_valid; |
| loff_t op_attr_blocks; |
| |
| /* Size-on-MDS epoch and flags. */ |
| __u64 op_ioepoch; |
| __u32 op_flags; |
| |
| /* Various operation flags. */ |
| enum mds_op_bias op_bias; |
| |
| /* Operation type */ |
| __u32 op_opc; |
| |
| /* Used by readdir */ |
| __u64 op_offset; |
| |
| /* Used by readdir */ |
| __u32 op_npages; |
| |
| /* used to transfer info between the stacks of MD client |
| * see enum op_cli_flags |
| */ |
| __u32 op_cli_flags; |
| |
| /* File object data version for HSM release, on client */ |
| __u64 op_data_version; |
| struct lustre_handle op_lease_handle; |
| }; |
| |
| enum op_cli_flags { |
| CLI_SET_MEA = 1 << 0, |
| CLI_RM_ENTRY = 1 << 1, |
| }; |
| |
| struct md_enqueue_info; |
| /* metadata stat-ahead */ |
| |
| struct md_enqueue_info { |
| struct md_op_data mi_data; |
| struct lookup_intent mi_it; |
| struct lustre_handle mi_lockh; |
| struct inode *mi_dir; |
| int (*mi_cb)(struct ptlrpc_request *req, |
| struct md_enqueue_info *minfo, int rc); |
| __u64 mi_cbdata; |
| unsigned int mi_generation; |
| }; |
| |
| struct obd_ops { |
| struct module *owner; |
| int (*iocontrol)(unsigned int cmd, struct obd_export *exp, int len, |
| void *karg, void __user *uarg); |
| int (*get_info)(const struct lu_env *env, struct obd_export *, |
| __u32 keylen, void *key, __u32 *vallen, void *val, |
| struct lov_stripe_md *lsm); |
| int (*set_info_async)(const struct lu_env *, struct obd_export *, |
| __u32 keylen, void *key, |
| __u32 vallen, void *val, |
| struct ptlrpc_request_set *set); |
| int (*attach)(struct obd_device *dev, u32 len, void *data); |
| int (*detach)(struct obd_device *dev); |
| int (*setup)(struct obd_device *dev, struct lustre_cfg *cfg); |
| int (*precleanup)(struct obd_device *dev, |
| enum obd_cleanup_stage cleanup_stage); |
| int (*cleanup)(struct obd_device *dev); |
| int (*process_config)(struct obd_device *dev, u32 len, void *data); |
| int (*postrecov)(struct obd_device *dev); |
| int (*add_conn)(struct obd_import *imp, struct obd_uuid *uuid, |
| int priority); |
| int (*del_conn)(struct obd_import *imp, struct obd_uuid *uuid); |
| /* connect to the target device with given connection |
| * data. @ocd->ocd_connect_flags is modified to reflect flags actually |
| * granted by the target, which are guaranteed to be a subset of flags |
| * asked for. If @ocd == NULL, use default parameters. |
| */ |
| int (*connect)(const struct lu_env *env, |
| struct obd_export **exp, struct obd_device *src, |
| struct obd_uuid *cluuid, struct obd_connect_data *ocd, |
| void *localdata); |
| int (*reconnect)(const struct lu_env *env, |
| struct obd_export *exp, struct obd_device *src, |
| struct obd_uuid *cluuid, |
| struct obd_connect_data *ocd, |
| void *localdata); |
| int (*disconnect)(struct obd_export *exp); |
| |
| /* Initialize/finalize fids infrastructure. */ |
| int (*fid_init)(struct obd_device *obd, |
| struct obd_export *exp, enum lu_cli_type type); |
| int (*fid_fini)(struct obd_device *obd); |
| |
| /* Allocate new fid according to passed @hint. */ |
| int (*fid_alloc)(struct obd_export *exp, struct lu_fid *fid, |
| struct md_op_data *op_data); |
| |
| /* |
| * Object with @fid is getting deleted, we may want to do something |
| * about this. |
| */ |
| int (*statfs)(const struct lu_env *, struct obd_export *exp, |
| struct obd_statfs *osfs, __u64 max_age, __u32 flags); |
| int (*statfs_async)(struct obd_export *exp, struct obd_info *oinfo, |
| __u64 max_age, struct ptlrpc_request_set *set); |
| int (*packmd)(struct obd_export *exp, struct lov_mds_md **disk_tgt, |
| struct lov_stripe_md *mem_src); |
| int (*unpackmd)(struct obd_export *exp, |
| struct lov_stripe_md **mem_tgt, |
| struct lov_mds_md *disk_src, int disk_len); |
| int (*preallocate)(struct lustre_handle *, u32 *req, u64 *ids); |
| int (*create)(const struct lu_env *env, struct obd_export *exp, |
| struct obdo *oa, struct lov_stripe_md **ea, |
| struct obd_trans_info *oti); |
| int (*destroy)(const struct lu_env *env, struct obd_export *exp, |
| struct obdo *oa, struct lov_stripe_md *ea, |
| struct obd_trans_info *oti, struct obd_export *md_exp); |
| int (*setattr)(const struct lu_env *, struct obd_export *exp, |
| struct obd_info *oinfo, struct obd_trans_info *oti); |
| int (*setattr_async)(struct obd_export *exp, struct obd_info *oinfo, |
| struct obd_trans_info *oti, |
| struct ptlrpc_request_set *rqset); |
| int (*getattr)(const struct lu_env *env, struct obd_export *exp, |
| struct obd_info *oinfo); |
| int (*getattr_async)(struct obd_export *exp, struct obd_info *oinfo, |
| struct ptlrpc_request_set *set); |
| int (*adjust_kms)(struct obd_export *exp, struct lov_stripe_md *lsm, |
| u64 size, int shrink); |
| int (*preprw)(const struct lu_env *env, int cmd, |
| struct obd_export *exp, struct obdo *oa, int objcount, |
| struct obd_ioobj *obj, struct niobuf_remote *remote, |
| int *nr_pages, struct niobuf_local *local, |
| struct obd_trans_info *oti); |
| int (*commitrw)(const struct lu_env *env, int cmd, |
| struct obd_export *exp, struct obdo *oa, |
| int objcount, struct obd_ioobj *obj, |
| struct niobuf_remote *remote, int pages, |
| struct niobuf_local *local, |
| struct obd_trans_info *oti, int rc); |
| int (*find_cbdata)(struct obd_export *, struct lov_stripe_md *, |
| ldlm_iterator_t it, void *data); |
| int (*init_export)(struct obd_export *exp); |
| int (*destroy_export)(struct obd_export *exp); |
| |
| /* metadata-only methods */ |
| int (*import_event)(struct obd_device *, struct obd_import *, |
| enum obd_import_event); |
| |
| int (*notify)(struct obd_device *obd, struct obd_device *watched, |
| enum obd_notify_event ev, void *data); |
| |
| int (*health_check)(const struct lu_env *env, struct obd_device *); |
| struct obd_uuid *(*get_uuid)(struct obd_export *exp); |
| |
| /* quota methods */ |
| int (*quotacheck)(struct obd_device *, struct obd_export *, |
| struct obd_quotactl *); |
| int (*quotactl)(struct obd_device *, struct obd_export *, |
| struct obd_quotactl *); |
| |
| /* pools methods */ |
| int (*pool_new)(struct obd_device *obd, char *poolname); |
| int (*pool_del)(struct obd_device *obd, char *poolname); |
| int (*pool_add)(struct obd_device *obd, char *poolname, |
| char *ostname); |
| int (*pool_rem)(struct obd_device *obd, char *poolname, |
| char *ostname); |
| void (*getref)(struct obd_device *obd); |
| void (*putref)(struct obd_device *obd); |
| /* |
| * NOTE: If adding ops, add another LPROCFS_OBD_OP_INIT() line |
| * to lprocfs_alloc_obd_stats() in obdclass/lprocfs_status.c. |
| * Also, add a wrapper function in include/linux/obd_class.h. |
| */ |
| }; |
| |
| enum { |
| LUSTRE_OPC_MKDIR = (1 << 0), |
| LUSTRE_OPC_SYMLINK = (1 << 1), |
| LUSTRE_OPC_MKNOD = (1 << 2), |
| LUSTRE_OPC_CREATE = (1 << 3), |
| LUSTRE_OPC_ANY = (1 << 4) |
| }; |
| |
| /* lmv structures */ |
| #define MEA_MAGIC_LAST_CHAR 0xb2221ca1 |
| #define MEA_MAGIC_ALL_CHARS 0xb222a11c |
| #define MEA_MAGIC_HASH_SEGMENT 0xb222a11b |
| |
| #define MAX_HASH_SIZE_32 0x7fffffffUL |
| #define MAX_HASH_SIZE 0x7fffffffffffffffULL |
| #define MAX_HASH_HIGHEST_BIT 0x1000000000000000ULL |
| |
| struct lustre_md { |
| struct mdt_body *body; |
| struct lov_stripe_md *lsm; |
| struct lmv_stripe_md *mea; |
| #ifdef CONFIG_FS_POSIX_ACL |
| struct posix_acl *posix_acl; |
| #endif |
| struct mdt_remote_perm *remote_perm; |
| }; |
| |
| struct md_open_data { |
| struct obd_client_handle *mod_och; |
| struct ptlrpc_request *mod_open_req; |
| struct ptlrpc_request *mod_close_req; |
| atomic_t mod_refcount; |
| bool mod_is_create; |
| }; |
| |
| struct lookup_intent; |
| |
| struct md_ops { |
| int (*getstatus)(struct obd_export *, struct lu_fid *); |
| int (*null_inode)(struct obd_export *, const struct lu_fid *); |
| int (*find_cbdata)(struct obd_export *, const struct lu_fid *, |
| ldlm_iterator_t, void *); |
| int (*close)(struct obd_export *, struct md_op_data *, |
| struct md_open_data *, struct ptlrpc_request **); |
| int (*create)(struct obd_export *, struct md_op_data *, |
| const void *, int, int, __u32, __u32, cfs_cap_t, |
| __u64, struct ptlrpc_request **); |
| int (*done_writing)(struct obd_export *, struct md_op_data *, |
| struct md_open_data *); |
| int (*enqueue)(struct obd_export *, struct ldlm_enqueue_info *, |
| struct lookup_intent *, struct md_op_data *, |
| struct lustre_handle *, void *, int, |
| struct ptlrpc_request **, __u64); |
| int (*getattr)(struct obd_export *, struct md_op_data *, |
| struct ptlrpc_request **); |
| int (*getattr_name)(struct obd_export *, struct md_op_data *, |
| struct ptlrpc_request **); |
| int (*intent_lock)(struct obd_export *, struct md_op_data *, |
| void *, int, struct lookup_intent *, int, |
| struct ptlrpc_request **, |
| ldlm_blocking_callback, __u64); |
| int (*link)(struct obd_export *, struct md_op_data *, |
| struct ptlrpc_request **); |
| int (*rename)(struct obd_export *, struct md_op_data *, |
| const char *, int, const char *, int, |
| struct ptlrpc_request **); |
| int (*is_subdir)(struct obd_export *, const struct lu_fid *, |
| const struct lu_fid *, |
| struct ptlrpc_request **); |
| int (*setattr)(struct obd_export *, struct md_op_data *, void *, |
| int, void *, int, struct ptlrpc_request **, |
| struct md_open_data **mod); |
| int (*sync)(struct obd_export *, const struct lu_fid *, |
| struct ptlrpc_request **); |
| int (*readpage)(struct obd_export *, struct md_op_data *, |
| struct page **, struct ptlrpc_request **); |
| |
| int (*unlink)(struct obd_export *, struct md_op_data *, |
| struct ptlrpc_request **); |
| |
| int (*setxattr)(struct obd_export *, const struct lu_fid *, |
| u64, const char *, const char *, int, int, int, __u32, |
| struct ptlrpc_request **); |
| |
| int (*getxattr)(struct obd_export *, const struct lu_fid *, |
| u64, const char *, const char *, int, int, int, |
| struct ptlrpc_request **); |
| |
| int (*init_ea_size)(struct obd_export *, int, int, int, int); |
| |
| int (*get_lustre_md)(struct obd_export *, struct ptlrpc_request *, |
| struct obd_export *, struct obd_export *, |
| struct lustre_md *); |
| |
| int (*free_lustre_md)(struct obd_export *, struct lustre_md *); |
| |
| int (*set_open_replay_data)(struct obd_export *, |
| struct obd_client_handle *, |
| struct lookup_intent *); |
| int (*clear_open_replay_data)(struct obd_export *, |
| struct obd_client_handle *); |
| int (*set_lock_data)(struct obd_export *, __u64 *, void *, __u64 *); |
| |
| enum ldlm_mode (*lock_match)(struct obd_export *, __u64, |
| const struct lu_fid *, enum ldlm_type, |
| ldlm_policy_data_t *, enum ldlm_mode, |
| struct lustre_handle *); |
| |
| int (*cancel_unused)(struct obd_export *, const struct lu_fid *, |
| ldlm_policy_data_t *, enum ldlm_mode, |
| enum ldlm_cancel_flags flags, void *opaque); |
| |
| int (*get_remote_perm)(struct obd_export *, const struct lu_fid *, |
| __u32, struct ptlrpc_request **); |
| |
| int (*intent_getattr_async)(struct obd_export *, |
| struct md_enqueue_info *, |
| struct ldlm_enqueue_info *); |
| |
| int (*revalidate_lock)(struct obd_export *, struct lookup_intent *, |
| struct lu_fid *, __u64 *bits); |
| |
| /* |
| * NOTE: If adding ops, add another LPROCFS_MD_OP_INIT() line to |
| * lprocfs_alloc_md_stats() in obdclass/lprocfs_status.c. Also, add a |
| * wrapper function in include/linux/obd_class.h. |
| */ |
| }; |
| |
| struct lsm_operations { |
| void (*lsm_free)(struct lov_stripe_md *); |
| int (*lsm_destroy)(struct lov_stripe_md *, struct obdo *oa, |
| struct obd_export *md_exp); |
| void (*lsm_stripe_by_index)(struct lov_stripe_md *, int *, u64 *, |
| u64 *); |
| void (*lsm_stripe_by_offset)(struct lov_stripe_md *, int *, u64 *, |
| u64 *); |
| int (*lsm_lmm_verify)(struct lov_mds_md *lmm, int lmm_bytes, |
| __u16 *stripe_count); |
| int (*lsm_unpackmd)(struct lov_obd *lov, struct lov_stripe_md *lsm, |
| struct lov_mds_md *lmm); |
| }; |
| |
| extern const struct lsm_operations lsm_v1_ops; |
| extern const struct lsm_operations lsm_v3_ops; |
| static inline const struct lsm_operations *lsm_op_find(int magic) |
| { |
| switch (magic) { |
| case LOV_MAGIC_V1: |
| return &lsm_v1_ops; |
| case LOV_MAGIC_V3: |
| return &lsm_v3_ops; |
| default: |
| CERROR("Cannot recognize lsm_magic %08x\n", magic); |
| return NULL; |
| } |
| } |
| |
| /* Requests for obd_extent_calc() */ |
| #define OBD_CALC_STRIPE_START 1 |
| #define OBD_CALC_STRIPE_END 2 |
| |
| static inline struct md_open_data *obd_mod_alloc(void) |
| { |
| struct md_open_data *mod; |
| |
| mod = kzalloc(sizeof(*mod), GFP_NOFS); |
| if (!mod) |
| return NULL; |
| atomic_set(&mod->mod_refcount, 1); |
| return mod; |
| } |
| |
| #define obd_mod_get(mod) atomic_inc(&(mod)->mod_refcount) |
| #define obd_mod_put(mod) \ |
| ({ \ |
| if (atomic_dec_and_test(&(mod)->mod_refcount)) { \ |
| if ((mod)->mod_open_req) \ |
| ptlrpc_req_finished((mod)->mod_open_req); \ |
| kfree(mod); \ |
| } \ |
| }) |
| |
| void obdo_from_inode(struct obdo *dst, struct inode *src, u32 valid); |
| void obdo_set_parent_fid(struct obdo *dst, const struct lu_fid *parent); |
| |
| /* return 1 if client should be resend request */ |
| static inline int client_should_resend(int resend, struct client_obd *cli) |
| { |
| return atomic_read(&cli->cl_resends) ? |
| atomic_read(&cli->cl_resends) > resend : 1; |
| } |
| |
| /** |
| * Return device name for this device |
| * |
| * XXX: lu_device is declared before obd_device, while a pointer pointing |
| * back to obd_device in lu_device, so this helper function defines here |
| * instead of in lu_object.h |
| */ |
| static inline const char *lu_dev_name(const struct lu_device *lu_dev) |
| { |
| return lu_dev->ld_obd->obd_name; |
| } |
| |
| static inline bool filename_is_volatile(const char *name, int namelen, int *idx) |
| { |
| const char *start; |
| char *end; |
| |
| if (strncmp(name, LUSTRE_VOLATILE_HDR, LUSTRE_VOLATILE_HDR_LEN) != 0) |
| return false; |
| |
| /* caller does not care of idx */ |
| if (!idx) |
| return true; |
| |
| /* volatile file, the MDT can be set from name */ |
| /* name format is LUSTRE_VOLATILE_HDR:[idx]: */ |
| /* if no MDT is specified, use std way */ |
| if (namelen < LUSTRE_VOLATILE_HDR_LEN + 2) |
| goto bad_format; |
| /* test for no MDT idx case */ |
| if ((*(name + LUSTRE_VOLATILE_HDR_LEN) == ':') && |
| (*(name + LUSTRE_VOLATILE_HDR_LEN + 1) == ':')) { |
| *idx = -1; |
| return true; |
| } |
| /* we have an idx, read it */ |
| start = name + LUSTRE_VOLATILE_HDR_LEN + 1; |
| *idx = simple_strtoul(start, &end, 0); |
| /* error cases: |
| * no digit, no trailing :, negative value |
| */ |
| if (((*idx == 0) && (end == start)) || |
| (*end != ':') || (*idx < 0)) |
| goto bad_format; |
| |
| return true; |
| bad_format: |
| /* bad format of mdt idx, we cannot return an error |
| * to caller so we use hash algo |
| */ |
| CERROR("Bad volatile file name format: %s\n", |
| name + LUSTRE_VOLATILE_HDR_LEN); |
| return false; |
| } |
| |
| static inline int cli_brw_size(struct obd_device *obd) |
| { |
| return obd->u.cli.cl_max_pages_per_rpc << PAGE_SHIFT; |
| } |
| |
| #endif /* __OBD_H */ |