1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright 2008 Sun Microsystems, Inc. All rights reserved
30 * Use is subject to license terms.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/include/lustre_mdc.h
38 * MDS data structures.
39 * See also lustre_idl.h for wire formats of requests.
51 # include <linux/fs.h>
52 # include <linux/dcache.h>
53 # ifdef CONFIG_FS_POSIX_ACL
54 # ifdef HAVE_XATTR_ACL
55 # include <linux/xattr_acl.h>
56 # endif /*HAVE_XATTR_ACL */
57 # ifdef HAVE_LINUX_POSIX_ACL_XATTR_H
58 # include <linux/posix_acl_xattr.h>
59 # endif /* HAVE_LINUX_POSIX_ACL_XATTR_H */
60 # endif /* CONFIG_FS_POSIX_ACL */
61 # ifndef HAVE_VFS_INTENT_PATCHES
62 # include <linux/lustre_intent.h>
63 # endif /* HAVE_VFS_INTENT_PATCHES */
64 #endif /* __KERNEL__ */
65 #include <lustre_handles.h>
66 #include <libcfs/libcfs.h>
67 #include <lustre/lustre_idl.h>
68 #include <lustre_lib.h>
69 #include <lustre_dlm.h>
70 #include <lustre_log.h>
71 #include <lustre_export.h>
75 struct ptlrpc_request;
79 cfs_semaphore_t rpcl_sem;
80 struct lookup_intent *rpcl_it;
83 static inline void mdc_init_rpc_lock(struct mdc_rpc_lock *lck)
85 cfs_sema_init(&lck->rpcl_sem, 1);
89 static inline void mdc_get_rpc_lock(struct mdc_rpc_lock *lck,
90 struct lookup_intent *it)
93 if (!it || (it->it_op != IT_GETATTR && it->it_op != IT_LOOKUP)) {
94 cfs_down(&lck->rpcl_sem);
95 LASSERT(lck->rpcl_it == NULL);
100 static inline void mdc_put_rpc_lock(struct mdc_rpc_lock *lck,
101 struct lookup_intent *it)
103 if (!it || (it->it_op != IT_GETATTR && it->it_op != IT_LOOKUP)) {
104 LASSERT(it == lck->rpcl_it);
106 cfs_up(&lck->rpcl_sem);
111 static inline void mdc_update_max_ea_from_body(struct obd_export *exp,
112 struct mdt_body *body)
114 if (body->valid & OBD_MD_FLMODEASIZE) {
115 if (exp->exp_obd->u.cli.cl_max_mds_easize < body->max_mdsize)
116 exp->exp_obd->u.cli.cl_max_mds_easize =
118 if (exp->exp_obd->u.cli.cl_max_mds_cookiesize <
119 body->max_cookiesize)
120 exp->exp_obd->u.cli.cl_max_mds_cookiesize =
121 body->max_cookiesize;
126 struct mdc_cache_waiter {
127 cfs_list_t mcw_entry;
128 cfs_waitq_t mcw_waitq;
131 /* mdc/mdc_locks.c */
132 int it_disposition(struct lookup_intent *it, int flag);
133 void it_clear_disposition(struct lookup_intent *it, int flag);
134 void it_set_disposition(struct lookup_intent *it, int flag);
135 int it_open_error(int phase, struct lookup_intent *it);
136 #ifdef HAVE_SPLIT_SUPPORT
137 int mdc_sendpage(struct obd_export *exp, const struct lu_fid *fid,
138 const struct page *page, int offset);