diff options
Diffstat (limited to 'drivers/staging/lustre/include/uapi/linux/lustre/lustre_ostid.h')
| -rw-r--r-- | drivers/staging/lustre/include/uapi/linux/lustre/lustre_ostid.h | 236 |
1 files changed, 0 insertions, 236 deletions
diff --git a/drivers/staging/lustre/include/uapi/linux/lustre/lustre_ostid.h b/drivers/staging/lustre/include/uapi/linux/lustre/lustre_ostid.h deleted file mode 100644 index 3343b602219b..000000000000 --- a/drivers/staging/lustre/include/uapi/linux/lustre/lustre_ostid.h +++ /dev/null @@ -1,236 +0,0 @@ -/* - * 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, 2014, Intel Corporation. - * - * Copyright 2015 Cray Inc, all rights reserved. - * Author: Ben Evans. - * - * Define ost_id associated functions - */ - -#ifndef _UAPI_LUSTRE_OSTID_H_ -#define _UAPI_LUSTRE_OSTID_H_ - -#include <linux/errno.h> -#include <uapi/linux/lustre/lustre_fid.h> - -static inline __u64 lmm_oi_id(const struct ost_id *oi) -{ - return oi->oi.oi_id; -} - -static inline __u64 lmm_oi_seq(const struct ost_id *oi) -{ - return oi->oi.oi_seq; -} - -static inline void lmm_oi_set_seq(struct ost_id *oi, __u64 seq) -{ - oi->oi.oi_seq = seq; -} - -static inline void lmm_oi_set_id(struct ost_id *oi, __u64 oid) -{ - oi->oi.oi_id = oid; -} - -static inline void lmm_oi_le_to_cpu(struct ost_id *dst_oi, - const struct ost_id *src_oi) -{ - dst_oi->oi.oi_id = __le64_to_cpu(src_oi->oi.oi_id); - dst_oi->oi.oi_seq = __le64_to_cpu(src_oi->oi.oi_seq); -} - -static inline void lmm_oi_cpu_to_le(struct ost_id *dst_oi, - const struct ost_id *src_oi) -{ - dst_oi->oi.oi_id = __cpu_to_le64(src_oi->oi.oi_id); - dst_oi->oi.oi_seq = __cpu_to_le64(src_oi->oi.oi_seq); -} - -/* extract OST sequence (group) from a wire ost_id (id/seq) pair */ -static inline __u64 ostid_seq(const struct ost_id *ostid) -{ - if (fid_seq_is_mdt0(ostid->oi.oi_seq)) - return FID_SEQ_OST_MDT0; - - if (fid_seq_is_default(ostid->oi.oi_seq)) - return FID_SEQ_LOV_DEFAULT; - - if (fid_is_idif(&ostid->oi_fid)) - return FID_SEQ_OST_MDT0; - - return fid_seq(&ostid->oi_fid); -} - -/* extract OST objid from a wire ost_id (id/seq) pair */ -static inline __u64 ostid_id(const struct ost_id *ostid) -{ - if (fid_seq_is_mdt0(ostid->oi.oi_seq)) - return ostid->oi.oi_id & IDIF_OID_MASK; - - if (fid_seq_is_default(ostid->oi.oi_seq)) - return ostid->oi.oi_id; - - if (fid_is_idif(&ostid->oi_fid)) - return fid_idif_id(fid_seq(&ostid->oi_fid), - fid_oid(&ostid->oi_fid), 0); - - return fid_oid(&ostid->oi_fid); -} - -static inline void ostid_set_seq(struct ost_id *oi, __u64 seq) -{ - if (fid_seq_is_mdt0(seq) || fid_seq_is_default(seq)) { - oi->oi.oi_seq = seq; - } else { - oi->oi_fid.f_seq = seq; - /* - * Note: if f_oid + f_ver is zero, we need init it - * to be 1, otherwise, ostid_seq will treat this - * as old ostid (oi_seq == 0) - */ - if (!oi->oi_fid.f_oid && !oi->oi_fid.f_ver) - oi->oi_fid.f_oid = LUSTRE_FID_INIT_OID; - } -} - -static inline void ostid_set_seq_mdt0(struct ost_id *oi) -{ - ostid_set_seq(oi, FID_SEQ_OST_MDT0); -} - -static inline void ostid_set_seq_echo(struct ost_id *oi) -{ - ostid_set_seq(oi, FID_SEQ_ECHO); -} - -static inline void ostid_set_seq_llog(struct ost_id *oi) -{ - ostid_set_seq(oi, FID_SEQ_LLOG); -} - -static inline void ostid_cpu_to_le(const struct ost_id *src_oi, - struct ost_id *dst_oi) -{ - if (fid_seq_is_mdt0(src_oi->oi.oi_seq)) { - dst_oi->oi.oi_id = __cpu_to_le64(src_oi->oi.oi_id); - dst_oi->oi.oi_seq = __cpu_to_le64(src_oi->oi.oi_seq); - } else { - fid_cpu_to_le(&dst_oi->oi_fid, &src_oi->oi_fid); - } -} - -static inline void ostid_le_to_cpu(const struct ost_id *src_oi, - struct ost_id *dst_oi) -{ - if (fid_seq_is_mdt0(src_oi->oi.oi_seq)) { - dst_oi->oi.oi_id = __le64_to_cpu(src_oi->oi.oi_id); - dst_oi->oi.oi_seq = __le64_to_cpu(src_oi->oi.oi_seq); - } else { - fid_le_to_cpu(&dst_oi->oi_fid, &src_oi->oi_fid); - } -} - -/** - * Sigh, because pre-2.4 uses - * struct lov_mds_md_v1 { - * ........ - * __u64 lmm_object_id; - * __u64 lmm_object_seq; - * ...... - * } - * to identify the LOV(MDT) object, and lmm_object_seq will - * be normal_fid, which make it hard to combine these conversion - * to ostid_to FID. so we will do lmm_oi/fid conversion separately - * - * We can tell the lmm_oi by this way, - * 1.8: lmm_object_id = {inode}, lmm_object_gr = 0 - * 2.1: lmm_object_id = {oid < 128k}, lmm_object_seq = FID_SEQ_NORMAL - * 2.4: lmm_oi.f_seq = FID_SEQ_NORMAL, lmm_oi.f_oid = {oid < 128k}, - * lmm_oi.f_ver = 0 - * - * But currently lmm_oi/lsm_oi does not have any "real" usages, - * except for printing some information, and the user can always - * get the real FID from LMA, besides this multiple case check might - * make swab more complicate. So we will keep using id/seq for lmm_oi. - */ - -static inline void fid_to_lmm_oi(const struct lu_fid *fid, - struct ost_id *oi) -{ - oi->oi.oi_id = fid_oid(fid); - oi->oi.oi_seq = fid_seq(fid); -} - -/** - * Unpack an OST object id/seq (group) into a FID. This is needed for - * converting all obdo, lmm, lsm, etc. 64-bit id/seq pairs into proper - * FIDs. Note that if an id/seq is already in FID/IDIF format it will - * be passed through unchanged. Only legacy OST objects in "group 0" - * will be mapped into the IDIF namespace so that they can fit into the - * struct lu_fid fields without loss. - */ -static inline int ostid_to_fid(struct lu_fid *fid, const struct ost_id *ostid, - __u32 ost_idx) -{ - __u64 seq = ostid_seq(ostid); - - if (ost_idx > 0xffff) - return -EBADF; - - if (fid_seq_is_mdt0(seq)) { - __u64 oid = ostid_id(ostid); - - /* This is a "legacy" (old 1.x/2.early) OST object in "group 0" - * that we map into the IDIF namespace. It allows up to 2^48 - * objects per OST, as this is the object namespace that has - * been in production for years. This can handle create rates - * of 1M objects/s/OST for 9 years, or combinations thereof. - */ - if (oid >= IDIF_MAX_OID) - return -EBADF; - - fid->f_seq = fid_idif_seq(oid, ost_idx); - /* truncate to 32 bits by assignment */ - fid->f_oid = oid; - /* in theory, not currently used */ - fid->f_ver = oid >> 48; - } else if (!fid_seq_is_default(seq)) { - /* This is either an IDIF object, which identifies objects - * across all OSTs, or a regular FID. The IDIF namespace - * maps legacy OST objects into the FID namespace. In both - * cases, we just pass the FID through, no conversion needed. - */ - if (ostid->oi_fid.f_ver) - return -EBADF; - - *fid = ostid->oi_fid; - } - - return 0; -} -#endif /* _UAPI_LUSTRE_OSTID_H_ */ |