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, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2015, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * cl code shared between vvp and liblustre (and other Lustre clients in the
40 #define DEBUG_SUBSYSTEM S_LLITE
41 #include <obd_class.h>
42 #include <obd_support.h>
44 #include <cl_object.h>
46 #include "llite_internal.h"
48 /* Initialize the default and maximum LOV EA and cookie sizes. This allows
49 * us to make MDS RPCs with large enough reply buffers to hold the
50 * maximum-sized (= maximum striped) EA and cookie without having to
51 * calculate this (via a call into the LOV + OSCs) each time we make an RPC. */
52 static int cl_init_ea_size(struct obd_export *md_exp, struct obd_export *dt_exp)
60 val_size = sizeof(max_easize);
61 rc = obd_get_info(NULL, dt_exp, sizeof(KEY_MAX_EASIZE), KEY_MAX_EASIZE,
62 &val_size, &max_easize);
66 val_size = sizeof(def_easize);
67 rc = obd_get_info(NULL, dt_exp, sizeof(KEY_DEFAULT_EASIZE),
68 KEY_DEFAULT_EASIZE, &val_size, &def_easize);
72 /* default cookiesize is 0 because from 2.4 server doesn't send
73 * llog cookies to client. */
74 CDEBUG(D_HA, "updating def/max_easize: %d/%d\n",
75 def_easize, max_easize);
77 rc = md_init_ea_size(md_exp, max_easize, def_easize);
82 * This function is used as an upcall-callback hooked by liblustre and llite
83 * clients into obd_notify() listeners chain to handle notifications about
84 * change of import connect_flags. See llu_fsswop_mount() and
85 * lustre_common_fill_super().
87 int cl_ocd_update(struct obd_device *host,
88 struct obd_device *watched,
89 enum obd_notify_event ev, void *owner, void *data)
91 struct lustre_client_ocd *lco;
92 struct client_obd *cli;
97 if (!strcmp(watched->obd_type->typ_name, LUSTRE_OSC_NAME) &&
98 watched->obd_set_up && !watched->obd_stopping) {
99 cli = &watched->u.cli;
101 flags = cli->cl_import->imp_connect_data.ocd_connect_flags;
102 CDEBUG(D_SUPER, "Changing connect_flags: "LPX64" -> "LPX64"\n",
103 lco->lco_flags, flags);
104 mutex_lock(&lco->lco_lock);
105 lco->lco_flags &= flags;
106 /* for each osc event update ea size */
108 cl_init_ea_size(lco->lco_md_exp, lco->lco_dt_exp);
110 mutex_unlock(&lco->lco_lock);
113 CERROR("unexpected notification from %s %s"
114 "(setup:%d,stopping:%d)!\n",
115 watched->obd_type->typ_name,
116 watched->obd_name, watched->obd_set_up,
117 watched->obd_stopping);
123 #define GROUPLOCK_SCOPE "grouplock"
125 int cl_get_grouplock(struct cl_object *obj, unsigned long gid, int nonblock,
126 struct ll_grouplock *lg)
130 struct cl_lock *lock;
131 struct cl_lock_descr *descr;
136 env = cl_env_get(&refcheck);
140 io = vvp_env_thread_io(env);
143 rc = cl_io_init(env, io, CIT_MISC, io->ci_obj);
146 cl_env_put(env, &refcheck);
147 /* Does not make sense to take GL for released layout */
153 lock = vvp_env_lock(env);
154 descr = &lock->cll_descr;
155 descr->cld_obj = obj;
156 descr->cld_start = 0;
157 descr->cld_end = CL_PAGE_EOF;
158 descr->cld_gid = gid;
159 descr->cld_mode = CLM_GROUP;
161 enqflags = CEF_MUST | (nonblock ? CEF_NONBLOCK : 0);
162 descr->cld_enq_flags = enqflags;
164 rc = cl_lock_request(env, io, lock);
167 cl_env_put(env, &refcheck);
179 void cl_put_grouplock(struct ll_grouplock *lg)
181 struct lu_env *env = lg->lg_env;
182 struct cl_io *io = lg->lg_io;
183 struct cl_lock *lock = lg->lg_lock;
185 LASSERT(lg->lg_env != NULL);
186 LASSERT(lg->lg_gid != 0);
188 cl_lock_release(env, lock);
190 cl_env_put(env, NULL);