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.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
27 * Copyright (c) 2011, 2014, Intel Corporation.
30 * This file is part of Lustre, http://www.lustre.org/
31 * Lustre is a trademark of Sun Microsystems, Inc.
33 * lustre/include/lustre_mdc.h
35 * MDS data structures.
36 * See also lustre_idl.h for wire formats of requests.
48 #include <linux/dcache.h>
49 #ifdef CONFIG_FS_POSIX_ACL
50 # include <linux/posix_acl_xattr.h>
51 #endif /* CONFIG_FS_POSIX_ACL */
52 #include <lustre_handles.h>
53 #include <lustre_intent.h>
54 #include <libcfs/libcfs.h>
55 #include <obd_class.h>
56 #include <uapi/linux/lustre/lustre_idl.h>
57 #include <lustre_lib.h>
58 #include <lustre_dlm.h>
59 #include <lustre_export.h>
63 struct ptlrpc_request;
66 static inline void mdc_get_mod_rpc_slot(struct ptlrpc_request *req,
67 struct lookup_intent *it)
69 struct client_obd *cli = &req->rq_import->imp_obd->u.cli;
73 opc = lustre_msg_get_opc(req->rq_reqmsg);
74 tag = obd_get_mod_rpc_slot(cli, opc, it);
75 lustre_msg_set_tag(req->rq_reqmsg, tag);
78 static inline void mdc_put_mod_rpc_slot(struct ptlrpc_request *req,
79 struct lookup_intent *it)
81 struct client_obd *cli = &req->rq_import->imp_obd->u.cli;
85 opc = lustre_msg_get_opc(req->rq_reqmsg);
86 tag = lustre_msg_get_tag(req->rq_reqmsg);
87 obd_put_mod_rpc_slot(cli, opc, it, tag);
92 * Update the maximum possible easize.
94 * This value is learned from ptlrpc replies sent by the MDT. The
95 * default easize is initialized to the minimum value but allowed to
96 * grow up to a single page in size if required to handle the common
99 * \see client_obd::cl_default_mds_easize
101 * \param[in] exp export for MDC device
102 * \param[in] body body of ptlrpc reply from MDT
105 static inline void mdc_update_max_ea_from_body(struct obd_export *exp,
106 struct mdt_body *body)
108 if (body->mbo_valid & OBD_MD_FLMODEASIZE) {
109 struct client_obd *cli = &exp->exp_obd->u.cli;
112 if (cli->cl_max_mds_easize < body->mbo_max_mdsize)
113 cli->cl_max_mds_easize = body->mbo_max_mdsize;
115 def_easize = min_t(__u32, body->mbo_max_mdsize,
116 OBD_MAX_DEFAULT_EA_SIZE);
117 cli->cl_default_mds_easize = def_easize;
122 /* mdc/mdc_locks.c */
123 int it_open_error(int phase, struct lookup_intent *it);
125 static inline bool cl_is_lov_delay_create(unsigned int flags)
127 return (flags & O_LOV_DELAY_CREATE_1_8) != 0 ||
128 (flags & O_LOV_DELAY_CREATE_MASK) == O_LOV_DELAY_CREATE_MASK;
131 static inline void cl_lov_delay_create_clear(unsigned int *flags)
133 if ((*flags & O_LOV_DELAY_CREATE_1_8) != 0)
134 *flags &= ~O_LOV_DELAY_CREATE_1_8;
135 if ((*flags & O_LOV_DELAY_CREATE_MASK) == O_LOV_DELAY_CREATE_MASK)
136 *flags &= ~O_LOV_DELAY_CREATE_MASK;