4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License version 2 for more details. A copy is
14 * included in the COPYING file that accompanied this code.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 * Copyright (c) 2013, Intel Corporation.
26 * lustre/include/lustre_lmv.h
28 * Lustre LMV structures and functions.
30 * Author: Di Wang <di.wang@intel.com>
35 #include <lustre/lustre_idl.h>
38 struct lu_fid lmo_fid;
40 struct inode *lmo_root;
43 struct lmv_stripe_md {
45 __u32 lsm_md_stripe_count;
46 __u32 lsm_md_master_mdt_index;
47 __u32 lsm_md_hash_type;
48 __u32 lsm_md_layout_version;
49 __u32 lsm_md_default_count;
50 __u32 lsm_md_default_index;
51 struct lu_fid lsm_md_master_fid;
52 char lsm_md_pool_name[LOV_MAXPOOLNAME];
53 struct lmv_oinfo lsm_md_oinfo[0];
57 lsm_md_eq(const struct lmv_stripe_md *lsm1, const struct lmv_stripe_md *lsm2)
61 if (lsm1->lsm_md_magic != lsm2->lsm_md_magic ||
62 lsm1->lsm_md_stripe_count != lsm2->lsm_md_stripe_count ||
63 lsm1->lsm_md_master_mdt_index !=
64 lsm2->lsm_md_master_mdt_index ||
65 lsm1->lsm_md_hash_type != lsm2->lsm_md_hash_type ||
66 lsm1->lsm_md_layout_version !=
67 lsm2->lsm_md_layout_version ||
68 strcmp(lsm1->lsm_md_pool_name,
69 lsm2->lsm_md_pool_name) != 0)
72 for (idx = 0; idx < lsm1->lsm_md_stripe_count; idx++) {
73 if (!lu_fid_eq(&lsm1->lsm_md_oinfo[idx].lmo_fid,
74 &lsm2->lsm_md_oinfo[idx].lmo_fid))
82 int lmv_pack_md(union lmv_mds_md **lmmp, const struct lmv_stripe_md *lsm,
84 int lmv_alloc_md(union lmv_mds_md **lmmp, int stripe_count);
85 void lmv_free_md(union lmv_mds_md *lmm);
86 int lmv_alloc_memmd(struct lmv_stripe_md **lsmp, int stripe_count);
87 void lmv_free_memmd(struct lmv_stripe_md *lsm);
89 static inline void lmv1_cpu_to_le(struct lmv_mds_md_v1 *lmv_dst,
90 const struct lmv_mds_md_v1 *lmv_src)
94 lmv_dst->lmv_magic = cpu_to_le32(lmv_src->lmv_magic);
95 lmv_dst->lmv_stripe_count = cpu_to_le32(lmv_src->lmv_stripe_count);
96 lmv_dst->lmv_master_mdt_index =
97 cpu_to_le32(lmv_src->lmv_master_mdt_index);
98 lmv_dst->lmv_hash_type = cpu_to_le32(lmv_src->lmv_hash_type);
99 lmv_dst->lmv_layout_version = cpu_to_le32(lmv_src->lmv_layout_version);
100 for (i = 0; i < lmv_src->lmv_stripe_count; i++)
101 fid_cpu_to_le(&lmv_dst->lmv_stripe_fids[i],
102 &lmv_src->lmv_stripe_fids[i]);
105 static inline void lmv1_le_to_cpu(struct lmv_mds_md_v1 *lmv_dst,
106 const struct lmv_mds_md_v1 *lmv_src)
110 lmv_dst->lmv_magic = le32_to_cpu(lmv_src->lmv_magic);
111 lmv_dst->lmv_stripe_count = le32_to_cpu(lmv_src->lmv_stripe_count);
112 lmv_dst->lmv_master_mdt_index =
113 le32_to_cpu(lmv_src->lmv_master_mdt_index);
114 lmv_dst->lmv_hash_type = le32_to_cpu(lmv_src->lmv_hash_type);
115 lmv_dst->lmv_layout_version = le32_to_cpu(lmv_src->lmv_layout_version);
116 for (i = 0; i < lmv_src->lmv_stripe_count; i++)
117 fid_le_to_cpu(&lmv_dst->lmv_stripe_fids[i],
118 &lmv_src->lmv_stripe_fids[i]);
121 static inline void lmv_cpu_to_le(union lmv_mds_md *lmv_dst,
122 const union lmv_mds_md *lmv_src)
124 switch (lmv_src->lmv_magic) {
126 lmv1_cpu_to_le(&lmv_dst->lmv_md_v1, &lmv_src->lmv_md_v1);
133 static inline void lmv_le_to_cpu(union lmv_mds_md *lmv_dst,
134 const union lmv_mds_md *lmv_src)
136 switch (le32_to_cpu(lmv_src->lmv_magic)) {
138 lmv1_le_to_cpu(&lmv_dst->lmv_md_v1, &lmv_src->lmv_md_v1);