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c14dd9d5 | 1 | // SPDX-License-Identifier: GPL-2.0 |
d7e09d03 PT |
2 | /* |
3 | * GPL HEADER START | |
4 | * | |
5 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 only, | |
9 | * as published by the Free Software Foundation. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * General Public License version 2 for more details (a copy is included | |
15 | * in the LICENSE file that accompanied this code). | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * version 2 along with this program; If not, see | |
6a5b99a4 | 19 | * http://www.gnu.org/licenses/gpl-2.0.html |
d7e09d03 | 20 | * |
d7e09d03 PT |
21 | * GPL HEADER END |
22 | */ | |
23 | /* | |
24 | * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved. | |
25 | * Use is subject to license terms. | |
26 | * | |
27 | * Copyright (c) 2011, 2012, Intel Corporation. | |
28 | */ | |
29 | /* | |
30 | * This file is part of Lustre, http://www.lustre.org/ | |
31 | * Lustre is a trademark of Sun Microsystems, Inc. | |
32 | * | |
33 | * cl code shared between vvp and liblustre (and other Lustre clients in the | |
34 | * future). | |
35 | * | |
36 | */ | |
d49ae438 | 37 | #define DEBUG_SUBSYSTEM S_LLITE |
b2e475b1 JS |
38 | #include <obd_class.h> |
39 | #include <obd_support.h> | |
40 | #include <obd.h> | |
41 | #include <cl_object.h> | |
d7e09d03 | 42 | |
98eae5e7 | 43 | #include "llite_internal.h" |
d7e09d03 | 44 | |
d7e09d03 PT |
45 | /* Initialize the default and maximum LOV EA and cookie sizes. This allows |
46 | * us to make MDS RPCs with large enough reply buffers to hold the | |
47 | * maximum-sized (= maximum striped) EA and cookie without having to | |
ec9a1ac2 OD |
48 | * calculate this (via a call into the LOV + OSCs) each time we make an RPC. |
49 | */ | |
d7e09d03 PT |
50 | int cl_init_ea_size(struct obd_export *md_exp, struct obd_export *dt_exp) |
51 | { | |
f648eed6 JH |
52 | u32 val_size, max_easize, def_easize; |
53 | int rc; | |
d7e09d03 | 54 | |
f648eed6 JH |
55 | val_size = sizeof(max_easize); |
56 | rc = obd_get_info(NULL, dt_exp, sizeof(KEY_MAX_EASIZE), KEY_MAX_EASIZE, | |
57 | &val_size, &max_easize); | |
d7e09d03 | 58 | if (rc) |
0a3bdb00 | 59 | return rc; |
d7e09d03 | 60 | |
f648eed6 JH |
61 | val_size = sizeof(def_easize); |
62 | rc = obd_get_info(NULL, dt_exp, sizeof(KEY_DEFAULT_EASIZE), | |
63 | KEY_DEFAULT_EASIZE, &val_size, &def_easize); | |
64 | if (rc) | |
65 | return rc; | |
d7e09d03 | 66 | |
f648eed6 JH |
67 | /* |
68 | * default cookiesize is 0 because from 2.4 server doesn't send | |
69 | * llog cookies to client. | |
70 | */ | |
71 | CDEBUG(D_HA, "updating def/max_easize: %d/%d\n", | |
72 | def_easize, max_easize); | |
d7e09d03 | 73 | |
f648eed6 | 74 | rc = md_init_ea_size(md_exp, max_easize, def_easize); |
0a3bdb00 | 75 | return rc; |
d7e09d03 PT |
76 | } |
77 | ||
78 | /** | |
79 | * This function is used as an upcall-callback hooked by liblustre and llite | |
80 | * clients into obd_notify() listeners chain to handle notifications about | |
81 | * change of import connect_flags. See llu_fsswop_mount() and | |
82 | * lustre_common_fill_super(). | |
83 | */ | |
84 | int cl_ocd_update(struct obd_device *host, | |
85 | struct obd_device *watched, | |
86 | enum obd_notify_event ev, void *owner, void *data) | |
87 | { | |
88 | struct lustre_client_ocd *lco; | |
89 | struct client_obd *cli; | |
90 | __u64 flags; | |
91 | int result; | |
92 | ||
2323d6d8 YS |
93 | if (!strcmp(watched->obd_type->typ_name, LUSTRE_OSC_NAME) && |
94 | watched->obd_set_up && !watched->obd_stopping) { | |
d7e09d03 PT |
95 | cli = &watched->u.cli; |
96 | lco = owner; | |
97 | flags = cli->cl_import->imp_connect_data.ocd_connect_flags; | |
55f5a824 | 98 | CDEBUG(D_SUPER, "Changing connect_flags: %#llx -> %#llx\n", |
d7e09d03 PT |
99 | lco->lco_flags, flags); |
100 | mutex_lock(&lco->lco_lock); | |
101 | lco->lco_flags &= flags; | |
102 | /* for each osc event update ea size */ | |
103 | if (lco->lco_dt_exp) | |
104 | cl_init_ea_size(lco->lco_md_exp, lco->lco_dt_exp); | |
105 | ||
106 | mutex_unlock(&lco->lco_lock); | |
107 | result = 0; | |
108 | } else { | |
2323d6d8 | 109 | CERROR("unexpected notification from %s %s (setup:%d,stopping:%d)!\n", |
d7e09d03 | 110 | watched->obd_type->typ_name, |
2323d6d8 YS |
111 | watched->obd_name, watched->obd_set_up, |
112 | watched->obd_stopping); | |
d7e09d03 PT |
113 | result = -EINVAL; |
114 | } | |
0a3bdb00 | 115 | return result; |
d7e09d03 PT |
116 | } |
117 | ||
118 | #define GROUPLOCK_SCOPE "grouplock" | |
119 | ||
120 | int cl_get_grouplock(struct cl_object *obj, unsigned long gid, int nonblock, | |
98eae5e7 | 121 | struct ll_grouplock *cg) |
d7e09d03 PT |
122 | { |
123 | struct lu_env *env; | |
124 | struct cl_io *io; | |
125 | struct cl_lock *lock; | |
126 | struct cl_lock_descr *descr; | |
127 | __u32 enqflags; | |
3ee45c7e | 128 | u16 refcheck; |
d7e09d03 PT |
129 | int rc; |
130 | ||
131 | env = cl_env_get(&refcheck); | |
132 | if (IS_ERR(env)) | |
133 | return PTR_ERR(env); | |
134 | ||
9acc4500 | 135 | io = vvp_env_thread_io(env); |
d7e09d03 | 136 | io->ci_obj = obj; |
d7e09d03 PT |
137 | |
138 | rc = cl_io_init(env, io, CIT_MISC, io->ci_obj); | |
06563b56 | 139 | if (rc != 0) { |
26f98e82 JX |
140 | cl_io_fini(env, io); |
141 | cl_env_put(env, &refcheck); | |
48d23e61 JX |
142 | /* Does not make sense to take GL for released layout */ |
143 | if (rc > 0) | |
144 | rc = -ENOTSUPP; | |
d7e09d03 PT |
145 | return rc; |
146 | } | |
147 | ||
9acc4500 | 148 | lock = vvp_env_lock(env); |
06563b56 | 149 | descr = &lock->cll_descr; |
d7e09d03 PT |
150 | descr->cld_obj = obj; |
151 | descr->cld_start = 0; | |
152 | descr->cld_end = CL_PAGE_EOF; | |
153 | descr->cld_gid = gid; | |
154 | descr->cld_mode = CLM_GROUP; | |
155 | ||
156 | enqflags = CEF_MUST | (nonblock ? CEF_NONBLOCK : 0); | |
157 | descr->cld_enq_flags = enqflags; | |
158 | ||
06563b56 JX |
159 | rc = cl_lock_request(env, io, lock); |
160 | if (rc < 0) { | |
d7e09d03 PT |
161 | cl_io_fini(env, io); |
162 | cl_env_put(env, &refcheck); | |
06563b56 | 163 | return rc; |
d7e09d03 PT |
164 | } |
165 | ||
a763e916 | 166 | cg->lg_env = env; |
98eae5e7 JH |
167 | cg->lg_io = io; |
168 | cg->lg_lock = lock; | |
169 | cg->lg_gid = gid; | |
d7e09d03 | 170 | |
d7e09d03 PT |
171 | return 0; |
172 | } | |
173 | ||
98eae5e7 | 174 | void cl_put_grouplock(struct ll_grouplock *cg) |
d7e09d03 | 175 | { |
98eae5e7 JH |
176 | struct lu_env *env = cg->lg_env; |
177 | struct cl_io *io = cg->lg_io; | |
178 | struct cl_lock *lock = cg->lg_lock; | |
d7e09d03 | 179 | |
98eae5e7 JH |
180 | LASSERT(cg->lg_env); |
181 | LASSERT(cg->lg_gid); | |
d7e09d03 | 182 | |
06563b56 | 183 | cl_lock_release(env, lock); |
d7e09d03 PT |
184 | cl_io_fini(env, io); |
185 | cl_env_put(env, NULL); | |
186 | } |