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Diffstat (limited to 'drivers/staging/lustre/lustre/include/lustre_fid.h')
| -rw-r--r-- | drivers/staging/lustre/lustre/include/lustre_fid.h | 676 |
1 files changed, 0 insertions, 676 deletions
diff --git a/drivers/staging/lustre/lustre/include/lustre_fid.h b/drivers/staging/lustre/lustre/include/lustre_fid.h deleted file mode 100644 index 094ad282de2c..000000000000 --- a/drivers/staging/lustre/lustre/include/lustre_fid.h +++ /dev/null @@ -1,676 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * 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.gnu.org/licenses/gpl-2.0.html - * - * 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. - * - * lustre/include/lustre_fid.h - * - * Author: Yury Umanets <umka@clusterfs.com> - */ - -#ifndef __LUSTRE_FID_H -#define __LUSTRE_FID_H - -/** \defgroup fid fid - * - * @{ - * - * http://wiki.lustre.org/index.php/Architecture_-_Interoperability_fids_zfs - * describes the FID namespace and interoperability requirements for FIDs. - * The important parts of that document are included here for reference. - * - * FID - * File IDentifier generated by client from range allocated by the SEQuence - * service and stored in struct lu_fid. The FID is composed of three parts: - * SEQuence, ObjectID, and VERsion. The SEQ component is a filesystem - * unique 64-bit integer, and only one client is ever assigned any SEQ value. - * The first 0x400 FID_SEQ_NORMAL [2^33, 2^33 + 0x400] values are reserved - * for system use. The OID component is a 32-bit value generated by the - * client on a per-SEQ basis to allow creating many unique FIDs without - * communication with the server. The VER component is a 32-bit value that - * distinguishes between different FID instantiations, such as snapshots or - * separate subtrees within the filesystem. FIDs with the same VER field - * are considered part of the same namespace. - * - * OLD filesystems are those upgraded from Lustre 1.x that predate FIDs, and - * MDTs use 32-bit ldiskfs internal inode/generation numbers (IGIFs), while - * OSTs use 64-bit Lustre object IDs and generation numbers. - * - * NEW filesystems are those formatted since the introduction of FIDs. - * - * IGIF - * Inode and Generation In FID, a surrogate FID used to globally identify - * an existing object on OLD formatted MDT file system. This would only be - * used on MDT0 in a DNE filesystem, because there cannot be more than one - * MDT in an OLD formatted filesystem. Belongs to sequence in [12, 2^32 - 1] - * range, where inode number is stored in SEQ, and inode generation is in OID. - * NOTE: This assumes no more than 2^32-1 inodes exist in the MDT filesystem, - * which is the maximum possible for an ldiskfs backend. It also assumes - * that the reserved ext3/ext4/ldiskfs inode numbers [0-11] are never visible - * to clients, which has always been true. - * - * IDIF - * object ID In FID, a surrogate FID used to globally identify an existing - * OST object on OLD formatted OST file system. Belongs to a sequence in - * [2^32, 2^33 - 1]. Sequence number is calculated as: - * - * 1 << 32 | (ost_index << 16) | ((objid >> 32) & 0xffff) - * - * that is, SEQ consists of 16-bit OST index, and higher 16 bits of object - * ID. The generation of unique SEQ values per OST allows the IDIF FIDs to - * be identified in the FLD correctly. The OID field is calculated as: - * - * objid & 0xffffffff - * - * that is, it consists of lower 32 bits of object ID. For objects within - * the IDIF range, object ID extraction will be: - * - * o_id = (fid->f_seq & 0x7fff) << 16 | fid->f_oid; - * o_seq = 0; // formerly group number - * - * NOTE: This assumes that no more than 2^48-1 objects have ever been created - * on any OST, and that no more than 65535 OSTs are in use. Both are very - * reasonable assumptions, i.e. an IDIF can uniquely map all objects assuming - * a maximum creation rate of 1M objects per second for a maximum of 9 years, - * or combinations thereof. - * - * OST_MDT0 - * Surrogate FID used to identify an existing object on OLD formatted OST - * filesystem. Belongs to the reserved SEQuence 0, and is used prior to - * the introduction of FID-on-OST, at which point IDIF will be used to - * identify objects as residing on a specific OST. - * - * LLOG - * For Lustre Log objects the object sequence 1 is used. This is compatible - * with both OLD and NEW namespaces, as this SEQ number is in the - * ext3/ldiskfs reserved inode range and does not conflict with IGIF - * sequence numbers. - * - * ECHO - * For testing OST IO performance the object sequence 2 is used. This is - * compatible with both OLD and NEW namespaces, as this SEQ number is in - * the ext3/ldiskfs reserved inode range and does not conflict with IGIF - * sequence numbers. - * - * OST_MDT1 .. OST_MAX - * For testing with multiple MDTs the object sequence 3 through 9 is used, - * allowing direct mapping of MDTs 1 through 7 respectively, for a total - * of 8 MDTs including OST_MDT0. This matches the legacy CMD project "group" - * mappings. However, this SEQ range is only for testing prior to any - * production DNE release, as the objects in this range conflict across all - * OSTs, as the OST index is not part of the FID. For production DNE usage, - * OST objects created by MDT1+ will use FID_SEQ_NORMAL FIDs. - * - * DLM OST objid to IDIF mapping - * For compatibility with existing OLD OST network protocol structures, the - * FID must map onto the o_id and o_seq in a manner that ensures existing - * objects are identified consistently for IO, as well as onto the LDLM - * namespace to ensure IDIFs there is only a single resource name for any - * object in the DLM. The OLD OST object DLM resource mapping is: - * - * resource[] = {o_id, o_seq, 0, 0}; // o_seq == 0 for production releases - * - * The NEW OST object DLM resource mapping is the same for both MDT and OST: - * - * resource[] = {SEQ, OID, VER, HASH}; - * - * NOTE: for mapping IDIF values to DLM resource names the o_id may be - * larger than the 2^33 reserved sequence numbers for IDIF, so it is possible - * for the o_id numbers to overlap FID SEQ numbers in the resource. However, - * in all production releases the OLD o_seq field is always zero, and all - * valid FID OID values are non-zero, so the lock resources will not collide. - * Even so, the MDT and OST resources are also in different LDLM namespaces. - */ - -#include <linux/libcfs/libcfs.h> -#include <uapi/linux/lustre/lustre_fid.h> -#include <uapi/linux/lustre/lustre_idl.h> -#include <uapi/linux/lustre/lustre_ostid.h> - -struct lu_env; -struct lu_site; -struct lu_context; -struct obd_device; -struct obd_export; - -/* Whole sequences space range and zero range definitions */ -extern const struct lu_seq_range LUSTRE_SEQ_SPACE_RANGE; -extern const struct lu_seq_range LUSTRE_SEQ_ZERO_RANGE; -extern const struct lu_fid LUSTRE_BFL_FID; -extern const struct lu_fid LU_OBF_FID; -extern const struct lu_fid LU_DOT_LUSTRE_FID; - -enum { - /* - * This is how may metadata FIDs may be allocated in one sequence(128k) - */ - LUSTRE_METADATA_SEQ_MAX_WIDTH = 0x0000000000020000ULL, - - /* - * This is how many data FIDs could be allocated in one sequence(4B - 1) - */ - LUSTRE_DATA_SEQ_MAX_WIDTH = 0x00000000FFFFFFFFULL, - - /* - * How many sequences to allocate to a client at once. - */ - LUSTRE_SEQ_META_WIDTH = 0x0000000000000001ULL, - - /* - * seq allocation pool size. - */ - LUSTRE_SEQ_BATCH_WIDTH = LUSTRE_SEQ_META_WIDTH * 1000, - - /* - * This is how many sequences may be in one super-sequence allocated to - * MDTs. - */ - LUSTRE_SEQ_SUPER_WIDTH = ((1ULL << 30ULL) * LUSTRE_SEQ_META_WIDTH) -}; - -enum { - /** 2^6 FIDs for OI containers */ - OSD_OI_FID_OID_BITS = 6, - /** reserve enough FIDs in case we want more in the future */ - OSD_OI_FID_OID_BITS_MAX = 10, -}; - -/** special OID for local objects */ -enum local_oid { - /** \see fld_mod_init */ - FLD_INDEX_OID = 3UL, - /** \see fid_mod_init */ - FID_SEQ_CTL_OID = 4UL, - FID_SEQ_SRV_OID = 5UL, - /** \see mdd_mod_init */ - MDD_ROOT_INDEX_OID = 6UL, /* deprecated in 2.4 */ - MDD_ORPHAN_OID = 7UL, /* deprecated in 2.4 */ - MDD_LOV_OBJ_OID = 8UL, - MDD_CAPA_KEYS_OID = 9UL, - /** \see mdt_mod_init */ - LAST_RECV_OID = 11UL, - OSD_FS_ROOT_OID = 13UL, - ACCT_USER_OID = 15UL, - ACCT_GROUP_OID = 16UL, - LFSCK_BOOKMARK_OID = 17UL, - OTABLE_IT_OID = 18UL, - /* These two definitions are obsolete - * OFD_GROUP0_LAST_OID = 20UL, - * OFD_GROUP4K_LAST_OID = 20UL+4096, - */ - OFD_LAST_GROUP_OID = 4117UL, - LLOG_CATALOGS_OID = 4118UL, - MGS_CONFIGS_OID = 4119UL, - OFD_HEALTH_CHECK_OID = 4120UL, - MDD_LOV_OBJ_OSEQ = 4121UL, - LFSCK_NAMESPACE_OID = 4122UL, - REMOTE_PARENT_DIR_OID = 4123UL, - SLAVE_LLOG_CATALOGS_OID = 4124UL, -}; - -static inline void lu_local_obj_fid(struct lu_fid *fid, __u32 oid) -{ - fid->f_seq = FID_SEQ_LOCAL_FILE; - fid->f_oid = oid; - fid->f_ver = 0; -} - -static inline void lu_local_name_obj_fid(struct lu_fid *fid, __u32 oid) -{ - fid->f_seq = FID_SEQ_LOCAL_NAME; - fid->f_oid = oid; - fid->f_ver = 0; -} - -/* For new FS (>= 2.4), the root FID will be changed to - * [FID_SEQ_ROOT:1:0], for existing FS, (upgraded to 2.4), - * the root FID will still be IGIF - */ -static inline int fid_is_root(const struct lu_fid *fid) -{ - return unlikely((fid_seq(fid) == FID_SEQ_ROOT && - fid_oid(fid) == 1)); -} - -static inline int fid_is_dot_lustre(const struct lu_fid *fid) -{ - return unlikely(fid_seq(fid) == FID_SEQ_DOT_LUSTRE && - fid_oid(fid) == FID_OID_DOT_LUSTRE); -} - -static inline int fid_is_obf(const struct lu_fid *fid) -{ - return unlikely(fid_seq(fid) == FID_SEQ_DOT_LUSTRE && - fid_oid(fid) == FID_OID_DOT_LUSTRE_OBF); -} - -static inline int fid_is_otable_it(const struct lu_fid *fid) -{ - return unlikely(fid_seq(fid) == FID_SEQ_LOCAL_FILE && - fid_oid(fid) == OTABLE_IT_OID); -} - -static inline int fid_is_acct(const struct lu_fid *fid) -{ - return fid_seq(fid) == FID_SEQ_LOCAL_FILE && - (fid_oid(fid) == ACCT_USER_OID || - fid_oid(fid) == ACCT_GROUP_OID); -} - -static inline int fid_is_quota(const struct lu_fid *fid) -{ - return fid_seq(fid) == FID_SEQ_QUOTA || - fid_seq(fid) == FID_SEQ_QUOTA_GLB; -} - -static inline int fid_seq_in_fldb(__u64 seq) -{ - return fid_seq_is_igif(seq) || fid_seq_is_norm(seq) || - fid_seq_is_root(seq) || fid_seq_is_dot(seq); -} - -static inline void lu_last_id_fid(struct lu_fid *fid, __u64 seq, __u32 ost_idx) -{ - if (fid_seq_is_mdt0(seq)) { - fid->f_seq = fid_idif_seq(0, ost_idx); - } else { - LASSERTF(fid_seq_is_norm(seq) || fid_seq_is_echo(seq) || - fid_seq_is_idif(seq), "%#llx\n", seq); - fid->f_seq = seq; - } - fid->f_oid = 0; - fid->f_ver = 0; -} - -/* seq client type */ -enum lu_cli_type { - LUSTRE_SEQ_METADATA = 1, - LUSTRE_SEQ_DATA -}; - -enum lu_mgr_type { - LUSTRE_SEQ_SERVER, - LUSTRE_SEQ_CONTROLLER -}; - -/* Client sequence manager interface. */ -struct lu_client_seq { - /* Sequence-controller export. */ - struct obd_export *lcs_exp; - spinlock_t lcs_lock; - - /* - * Range of allowed for allocation sequences. When using lu_client_seq on - * clients, this contains meta-sequence range. And for servers this - * contains super-sequence range. - */ - struct lu_seq_range lcs_space; - - /* Seq related proc */ - struct dentry *lcs_debugfs_entry; - - /* This holds last allocated fid in last obtained seq */ - struct lu_fid lcs_fid; - - /* LUSTRE_SEQ_METADATA or LUSTRE_SEQ_DATA */ - enum lu_cli_type lcs_type; - - /* - * Service uuid, passed from MDT + seq name to form unique seq name to - * use it with procfs. - */ - char lcs_name[LUSTRE_MDT_MAXNAMELEN]; - - /* - * Sequence width, that is how many objects may be allocated in one - * sequence. Default value for it is LUSTRE_SEQ_MAX_WIDTH. - */ - __u64 lcs_width; - - /* wait queue for fid allocation and update indicator */ - wait_queue_head_t lcs_waitq; - int lcs_update; -}; - -/* Client methods */ -void seq_client_flush(struct lu_client_seq *seq); - -int seq_client_alloc_fid(const struct lu_env *env, struct lu_client_seq *seq, - struct lu_fid *fid); -/* Fids common stuff */ -int fid_is_local(const struct lu_env *env, - struct lu_site *site, const struct lu_fid *fid); - -enum lu_cli_type; -int client_fid_init(struct obd_device *obd, struct obd_export *exp, - enum lu_cli_type type); -int client_fid_fini(struct obd_device *obd); - -/* fid locking */ - -struct ldlm_namespace; - -/* - * Build (DLM) resource name from FID. - * - * NOTE: until Lustre 1.8.7/2.1.1 the fid_ver() was packed into name[2], - * but was moved into name[1] along with the OID to avoid consuming the - * renaming name[2,3] fields that need to be used for the quota identifier. - */ -static inline void -fid_build_reg_res_name(const struct lu_fid *fid, struct ldlm_res_id *res) -{ - memset(res, 0, sizeof(*res)); - res->name[LUSTRE_RES_ID_SEQ_OFF] = fid_seq(fid); - res->name[LUSTRE_RES_ID_VER_OID_OFF] = fid_ver_oid(fid); -} - -/* - * Return true if resource is for object identified by FID. - */ -static inline bool fid_res_name_eq(const struct lu_fid *fid, - const struct ldlm_res_id *res) -{ - return res->name[LUSTRE_RES_ID_SEQ_OFF] == fid_seq(fid) && - res->name[LUSTRE_RES_ID_VER_OID_OFF] == fid_ver_oid(fid); -} - -/* - * Extract FID from LDLM resource. Reverse of fid_build_reg_res_name(). - */ -static inline void -fid_extract_from_res_name(struct lu_fid *fid, const struct ldlm_res_id *res) -{ - fid->f_seq = res->name[LUSTRE_RES_ID_SEQ_OFF]; - fid->f_oid = (__u32)(res->name[LUSTRE_RES_ID_VER_OID_OFF]); - fid->f_ver = (__u32)(res->name[LUSTRE_RES_ID_VER_OID_OFF] >> 32); - LASSERT(fid_res_name_eq(fid, res)); -} - -/* - * Build (DLM) resource identifier from global quota FID and quota ID. - */ -static inline void -fid_build_quota_res_name(const struct lu_fid *glb_fid, union lquota_id *qid, - struct ldlm_res_id *res) -{ - fid_build_reg_res_name(glb_fid, res); - res->name[LUSTRE_RES_ID_QUOTA_SEQ_OFF] = fid_seq(&qid->qid_fid); - res->name[LUSTRE_RES_ID_QUOTA_VER_OID_OFF] = fid_ver_oid(&qid->qid_fid); -} - -/* - * Extract global FID and quota ID from resource name - */ -static inline void fid_extract_from_quota_res(struct lu_fid *glb_fid, - union lquota_id *qid, - const struct ldlm_res_id *res) -{ - fid_extract_from_res_name(glb_fid, res); - qid->qid_fid.f_seq = res->name[LUSTRE_RES_ID_QUOTA_SEQ_OFF]; - qid->qid_fid.f_oid = (__u32)res->name[LUSTRE_RES_ID_QUOTA_VER_OID_OFF]; - qid->qid_fid.f_ver = - (__u32)(res->name[LUSTRE_RES_ID_QUOTA_VER_OID_OFF] >> 32); -} - -static inline void -fid_build_pdo_res_name(const struct lu_fid *fid, unsigned int hash, - struct ldlm_res_id *res) -{ - fid_build_reg_res_name(fid, res); - res->name[LUSTRE_RES_ID_HSH_OFF] = hash; -} - -/** - * Build DLM resource name from object id & seq, which will be removed - * finally, when we replace ost_id with FID in data stack. - * - * Currently, resid from the old client, whose res[0] = object_id, - * res[1] = object_seq, is just opposite with Metatdata - * resid, where, res[0] = fid->f_seq, res[1] = fid->f_oid. - * To unify the resid identification, we will reverse the data - * resid to keep it same with Metadata resid, i.e. - * - * For resid from the old client, - * res[0] = objid, res[1] = 0, still keep the original order, - * for compatibility. - * - * For new resid - * res will be built from normal FID directly, i.e. res[0] = f_seq, - * res[1] = f_oid + f_ver. - */ -static inline void ostid_build_res_name(const struct ost_id *oi, - struct ldlm_res_id *name) -{ - memset(name, 0, sizeof(*name)); - if (fid_seq_is_mdt0(ostid_seq(oi))) { - name->name[LUSTRE_RES_ID_SEQ_OFF] = ostid_id(oi); - name->name[LUSTRE_RES_ID_VER_OID_OFF] = ostid_seq(oi); - } else { - fid_build_reg_res_name(&oi->oi_fid, name); - } -} - -/** - * Return true if the resource is for the object identified by this id & group. - */ -static inline int ostid_res_name_eq(const struct ost_id *oi, - const struct ldlm_res_id *name) -{ - /* Note: it is just a trick here to save some effort, probably the - * correct way would be turn them into the FID and compare - */ - if (fid_seq_is_mdt0(ostid_seq(oi))) { - return name->name[LUSTRE_RES_ID_SEQ_OFF] == ostid_id(oi) && - name->name[LUSTRE_RES_ID_VER_OID_OFF] == ostid_seq(oi); - } else { - return name->name[LUSTRE_RES_ID_SEQ_OFF] == ostid_seq(oi) && - name->name[LUSTRE_RES_ID_VER_OID_OFF] == ostid_id(oi); - } -} - -/** - * Note: we need check oi_seq to decide where to set oi_id, - * so oi_seq should always be set ahead of oi_id. - */ -static inline int ostid_set_id(struct ost_id *oi, __u64 oid) -{ - if (fid_seq_is_mdt0(oi->oi.oi_seq)) { - if (oid >= IDIF_MAX_OID) - return -E2BIG; - oi->oi.oi_id = oid; - } else if (fid_is_idif(&oi->oi_fid)) { - if (oid >= IDIF_MAX_OID) - return -E2BIG; - oi->oi_fid.f_seq = fid_idif_seq(oid, - fid_idif_ost_idx(&oi->oi_fid)); - oi->oi_fid.f_oid = oid; - oi->oi_fid.f_ver = oid >> 48; - } else { - if (oid >= OBIF_MAX_OID) - return -E2BIG; - oi->oi_fid.f_oid = oid; - } - return 0; -} - -/* pack any OST FID into an ostid (id/seq) for the wire/disk */ -static inline int fid_to_ostid(const struct lu_fid *fid, struct ost_id *ostid) -{ - int rc = 0; - - if (fid_seq_is_igif(fid->f_seq)) - return -EBADF; - - if (fid_is_idif(fid)) { - u64 objid = fid_idif_id(fid_seq(fid), fid_oid(fid), - fid_ver(fid)); - - ostid_set_seq_mdt0(ostid); - rc = ostid_set_id(ostid, objid); - } else { - ostid->oi_fid = *fid; - } - - return rc; -} - -/* The same as osc_build_res_name() */ -static inline void ost_fid_build_resid(const struct lu_fid *fid, - struct ldlm_res_id *resname) -{ - if (fid_is_mdt0(fid) || fid_is_idif(fid)) { - struct ost_id oi; - - oi.oi.oi_id = 0; /* gcc 4.7.2 complains otherwise */ - if (fid_to_ostid(fid, &oi) != 0) - return; - ostid_build_res_name(&oi, resname); - } else { - fid_build_reg_res_name(fid, resname); - } -} - -/** - * Flatten 128-bit FID values into a 64-bit value for use as an inode number. - * For non-IGIF FIDs this starts just over 2^32, and continues without - * conflict until 2^64, at which point we wrap the high 24 bits of the SEQ - * into the range where there may not be many OID values in use, to minimize - * the risk of conflict. - * - * Suppose LUSTRE_SEQ_MAX_WIDTH less than (1 << 24) which is currently true, - * the time between re-used inode numbers is very long - 2^40 SEQ numbers, - * or about 2^40 client mounts, if clients create less than 2^24 files/mount. - */ -static inline __u64 fid_flatten(const struct lu_fid *fid) -{ - __u64 ino; - __u64 seq; - - if (fid_is_igif(fid)) { - ino = lu_igif_ino(fid); - return ino; - } - - seq = fid_seq(fid); - - ino = (seq << 24) + ((seq >> 24) & 0xffffff0000ULL) + fid_oid(fid); - - return ino ? ino : fid_oid(fid); -} - -static inline __u32 fid_hash(const struct lu_fid *f, int bits) -{ - /* all objects with same id and different versions will belong to same - * collisions list. - */ - return hash_long(fid_flatten(f), bits); -} - -/** - * map fid to 32 bit value for ino on 32bit systems. - */ -static inline __u32 fid_flatten32(const struct lu_fid *fid) -{ - __u32 ino; - __u64 seq; - - if (fid_is_igif(fid)) { - ino = lu_igif_ino(fid); - return ino; - } - - seq = fid_seq(fid) - FID_SEQ_START; - - /* Map the high bits of the OID into higher bits of the inode number so - * that inodes generated at about the same time have a reduced chance - * of collisions. This will give a period of 2^12 = 1024 unique clients - * (from SEQ) and up to min(LUSTRE_SEQ_MAX_WIDTH, 2^20) = 128k objects - * (from OID), or up to 128M inodes without collisions for new files. - */ - ino = ((seq & 0x000fffffULL) << 12) + ((seq >> 8) & 0xfffff000) + - (seq >> (64 - (40 - 8)) & 0xffffff00) + - (fid_oid(fid) & 0xff000fff) + ((fid_oid(fid) & 0x00fff000) << 8); - - return ino ? ino : fid_oid(fid); -} - -static inline int lu_fid_diff(const struct lu_fid *fid1, - const struct lu_fid *fid2) -{ - LASSERTF(fid_seq(fid1) == fid_seq(fid2), "fid1:" DFID ", fid2:" DFID "\n", - PFID(fid1), PFID(fid2)); - - if (fid_is_idif(fid1) && fid_is_idif(fid2)) - return fid_idif_id(fid1->f_seq, fid1->f_oid, fid1->f_ver) - - fid_idif_id(fid2->f_seq, fid2->f_oid, fid2->f_ver); - - return fid_oid(fid1) - fid_oid(fid2); -} - -#define LUSTRE_SEQ_SRV_NAME "seq_srv" -#define LUSTRE_SEQ_CTL_NAME "seq_ctl" - -/* Range common stuff */ -static inline void range_cpu_to_le(struct lu_seq_range *dst, const struct lu_seq_range *src) -{ - dst->lsr_start = cpu_to_le64(src->lsr_start); - dst->lsr_end = cpu_to_le64(src->lsr_end); - dst->lsr_index = cpu_to_le32(src->lsr_index); - dst->lsr_flags = cpu_to_le32(src->lsr_flags); -} - -static inline void range_le_to_cpu(struct lu_seq_range *dst, const struct lu_seq_range *src) -{ - dst->lsr_start = le64_to_cpu(src->lsr_start); - dst->lsr_end = le64_to_cpu(src->lsr_end); - dst->lsr_index = le32_to_cpu(src->lsr_index); - dst->lsr_flags = le32_to_cpu(src->lsr_flags); -} - -static inline void range_cpu_to_be(struct lu_seq_range *dst, const struct lu_seq_range *src) -{ - dst->lsr_start = cpu_to_be64(src->lsr_start); - dst->lsr_end = cpu_to_be64(src->lsr_end); - dst->lsr_index = cpu_to_be32(src->lsr_index); - dst->lsr_flags = cpu_to_be32(src->lsr_flags); -} - -static inline void range_be_to_cpu(struct lu_seq_range *dst, const struct lu_seq_range *src) -{ - dst->lsr_start = be64_to_cpu(src->lsr_start); - dst->lsr_end = be64_to_cpu(src->lsr_end); - dst->lsr_index = be32_to_cpu(src->lsr_index); - dst->lsr_flags = be32_to_cpu(src->lsr_flags); -} - -/** @} fid */ - -#endif /* __LUSTRE_FID_H */ |