staging: lustre: uapi: move lu_fid, ost_id funcs out of lustre_idl.h (071277d9) · Commits · e / devices / android_kernel_teracube_emerald

drivers/staging/lustre/include/uapi/linux/lustre/lustre_fid.h

0 → 100644

+293 −0

Original line number	Diff line number	Diff line
		/*
		* 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 2016 Cray Inc, all rights reserved.
		* Author: Ben Evans.
		*
		* all fid manipulation functions go here
		*
		* FIDS are globally unique within a Lustre filessytem, and are made up
		* of three parts: sequence, Object ID, and version.
		*
		*/
		#ifndef _UAPI_LUSTRE_FID_H_
		#define _UAPI_LUSTRE_FID_H_

		#include "../../../../lustre/include/lustre/lustre_idl.h"

		/** returns fid object sequence */
		static inline __u64 fid_seq(const struct lu_fid *fid)
		{
		return fid->f_seq;
		}

		/** returns fid object id */
		static inline __u32 fid_oid(const struct lu_fid *fid)
		{
		return fid->f_oid;
		}

		/** returns fid object version */
		static inline __u32 fid_ver(const struct lu_fid *fid)
		{
		return fid->f_ver;
		}

		static inline void fid_zero(struct lu_fid *fid)
		{
		memset(fid, 0, sizeof(*fid));
		}

		static inline __u64 fid_ver_oid(const struct lu_fid *fid)
		{
		return (__u64)fid_ver(fid) << 32 \| fid_oid(fid);
		}

		static inline bool fid_seq_is_mdt0(__u64 seq)
		{
		return seq == FID_SEQ_OST_MDT0;
		}

		static inline bool fid_seq_is_mdt(__u64 seq)
		{
		return seq == FID_SEQ_OST_MDT0 \|\| seq >= FID_SEQ_NORMAL;
		};

		static inline bool fid_seq_is_echo(__u64 seq)
		{
		return seq == FID_SEQ_ECHO;
		}

		static inline bool fid_is_echo(const struct lu_fid *fid)
		{
		return fid_seq_is_echo(fid_seq(fid));
		}

		static inline bool fid_seq_is_llog(__u64 seq)
		{
		return seq == FID_SEQ_LLOG;
		}

		static inline bool fid_is_llog(const struct lu_fid *fid)
		{
		/* file with OID == 0 is not llog but contains last oid */
		return fid_seq_is_llog(fid_seq(fid)) && fid_oid(fid) > 0;
		}

		static inline bool fid_seq_is_rsvd(__u64 seq)
		{
		return seq > FID_SEQ_OST_MDT0 && seq <= FID_SEQ_RSVD;
		};

		static inline bool fid_seq_is_special(__u64 seq)
		{
		return seq == FID_SEQ_SPECIAL;
		};

		static inline bool fid_seq_is_local_file(__u64 seq)
		{
		return seq == FID_SEQ_LOCAL_FILE \|\|
		seq == FID_SEQ_LOCAL_NAME;
		};

		static inline bool fid_seq_is_root(__u64 seq)
		{
		return seq == FID_SEQ_ROOT;
		}

		static inline bool fid_seq_is_dot(__u64 seq)
		{
		return seq == FID_SEQ_DOT_LUSTRE;
		}

		static inline bool fid_seq_is_default(__u64 seq)
		{
		return seq == FID_SEQ_LOV_DEFAULT;
		}

		static inline bool fid_is_mdt0(const struct lu_fid *fid)
		{
		return fid_seq_is_mdt0(fid_seq(fid));
		}

		/**
		* Check if a fid is igif or not.
		* \param fid the fid to be tested.
		* \return true if the fid is an igif; otherwise false.
		*/
		static inline bool fid_seq_is_igif(__u64 seq)
		{
		return seq >= FID_SEQ_IGIF && seq <= FID_SEQ_IGIF_MAX;
		}

		static inline bool fid_is_igif(const struct lu_fid *fid)
		{
		return fid_seq_is_igif(fid_seq(fid));
		}

		/**
		* Check if a fid is idif or not.
		* \param fid the fid to be tested.
		* \return true if the fid is an idif; otherwise false.
		*/
		static inline bool fid_seq_is_idif(__u64 seq)
		{
		return seq >= FID_SEQ_IDIF && seq <= FID_SEQ_IDIF_MAX;
		}

		static inline bool fid_is_idif(const struct lu_fid *fid)
		{
		return fid_seq_is_idif(fid_seq(fid));
		}

		static inline bool fid_is_local_file(const struct lu_fid *fid)
		{
		return fid_seq_is_local_file(fid_seq(fid));
		}

		static inline bool fid_seq_is_norm(__u64 seq)
		{
		return (seq >= FID_SEQ_NORMAL);
		}

		static inline bool fid_is_norm(const struct lu_fid *fid)
		{
		return fid_seq_is_norm(fid_seq(fid));
		}

		/* convert an OST objid into an IDIF FID SEQ number */
		static inline __u64 fid_idif_seq(__u64 id, __u32 ost_idx)
		{
		return FID_SEQ_IDIF \| (ost_idx << 16) \| ((id >> 32) & 0xffff);
		}

		/* convert a packed IDIF FID into an OST objid */
		static inline __u64 fid_idif_id(__u64 seq, __u32 oid, __u32 ver)
		{
		return ((__u64)ver << 48) \| ((seq & 0xffff) << 32) \| oid;
		}

		static inline __u32 idif_ost_idx(__u64 seq)
		{
		return (seq >> 16) & 0xffff;
		}

		/* extract ost index from IDIF FID */
		static inline __u32 fid_idif_ost_idx(const struct lu_fid *fid)
		{
		return idif_ost_idx(fid_seq(fid));
		}

		/**
		* Get inode number from an igif.
		* \param fid an igif to get inode number from.
		* \return inode number for the igif.
		*/
		static inline ino_t lu_igif_ino(const struct lu_fid *fid)
		{
		return fid_seq(fid);
		}

		/**
		* Get inode generation from an igif.
		* \param fid an igif to get inode generation from.
		* \return inode generation for the igif.
		*/
		static inline __u32 lu_igif_gen(const struct lu_fid *fid)
		{
		return fid_oid(fid);
		}

		/**
		* Build igif from the inode number/generation.
		*/
		static inline void lu_igif_build(struct lu_fid *fid, __u32 ino, __u32 gen)
		{
		fid->f_seq = ino;
		fid->f_oid = gen;
		fid->f_ver = 0;
		}

		/*
		* Fids are transmitted across network (in the sender byte-ordering),
		* and stored on disk in big-endian order.
		*/
		static inline void fid_cpu_to_le(struct lu_fid dst, const struct lu_fid src)
		{
		dst->f_seq = __cpu_to_le64(fid_seq(src));
		dst->f_oid = __cpu_to_le32(fid_oid(src));
		dst->f_ver = __cpu_to_le32(fid_ver(src));
		}

		static inline void fid_le_to_cpu(struct lu_fid dst, const struct lu_fid src)
		{
		dst->f_seq = __le64_to_cpu(fid_seq(src));
		dst->f_oid = __le32_to_cpu(fid_oid(src));
		dst->f_ver = __le32_to_cpu(fid_ver(src));
		}

		static inline void fid_cpu_to_be(struct lu_fid dst, const struct lu_fid src)
		{
		dst->f_seq = __cpu_to_be64(fid_seq(src));
		dst->f_oid = __cpu_to_be32(fid_oid(src));
		dst->f_ver = __cpu_to_be32(fid_ver(src));
		}

		static inline void fid_be_to_cpu(struct lu_fid dst, const struct lu_fid src)
		{
		dst->f_seq = __be64_to_cpu(fid_seq(src));
		dst->f_oid = __be32_to_cpu(fid_oid(src));
		dst->f_ver = __be32_to_cpu(fid_ver(src));
		}

		static inline bool fid_is_sane(const struct lu_fid *fid)
		{
		return fid && ((fid_seq(fid) >= FID_SEQ_START && !fid_ver(fid)) \|\|
		fid_is_igif(fid) \|\| fid_is_idif(fid) \|\|
		fid_seq_is_rsvd(fid_seq(fid)));
		}

		static inline bool lu_fid_eq(const struct lu_fid f0, const struct lu_fid f1)
		{
		return !memcmp(f0, f1, sizeof(*f0));
		}

		static inline int lu_fid_cmp(const struct lu_fid *f0,
		const struct lu_fid *f1)
		{
		if (fid_seq(f0) != fid_seq(f1))
		return fid_seq(f0) > fid_seq(f1) ? 1 : -1;

		if (fid_oid(f0) != fid_oid(f1))
		return fid_oid(f0) > fid_oid(f1) ? 1 : -1;

		if (fid_ver(f0) != fid_ver(f1))
		return fid_ver(f0) > fid_ver(f1) ? 1 : -1;

		return 0;
		}
		#endif

drivers/staging/lustre/include/uapi/linux/lustre/lustre_ostid.h

0 → 100644

+237 −0

Original line number	Diff line number	Diff line
		/*
		* 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 "lustre_fid.h"
		#include "../../../../lustre/include/lustre/lustre_idl.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_ */

drivers/staging/lustre/lustre/include/lustre/lustre_idl.h

+4 −537

File changed.

Preview size limit exceeded, changes collapsed.

drivers/staging/lustre/lustre/include/lustre_fid.h

+48 −1

Original line number	Diff line number	Diff line
		@@ -149,8 +149,9 @@
		*/

		#include "../../include/linux/libcfs/libcfs.h"
		#include "../../include/uapi/linux/lustre/lustre_fid.h"
		#include "lustre/lustre_idl.h"
		#include "seq_range.h"
		#include "../../include/uapi/linux/lustre/lustre_ostid.h"

		struct lu_env;
		struct lu_site;
		@@ -494,6 +495,52 @@ static inline int ostid_res_name_eq(const struct ost_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)

drivers/staging/lustre/lustre/include/lustre_fld.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -40,6 +40,7 @@

		#include "lustre/lustre_idl.h"
		#include "../../include/linux/libcfs/libcfs.h"
		#include "seq_range.h"

		struct lu_client_fld;
		struct lu_server_fld;