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) 2012, 2013, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * cl_object implementation for VVP layer.
38 * Author: Nikita Danilov <nikita.danilov@sun.com>
41 #define DEBUG_SUBSYSTEM S_LLITE
44 #include <libcfs/libcfs.h>
47 #include "llite_internal.h"
48 #include "vvp_internal.h"
50 /*****************************************************************************
56 static int vvp_object_print(const struct lu_env *env, void *cookie,
57 lu_printer_t p, const struct lu_object *o)
59 struct ccc_object *obj = lu2ccc(o);
60 struct inode *inode = obj->cob_inode;
61 struct ll_inode_info *lli;
63 (*p)(env, cookie, "(%s %d %d) inode: %p ",
64 list_empty(&obj->cob_pending_list) ? "-" : "+",
65 atomic_read(&obj->cob_transient_pages),
66 atomic_read(&obj->cob_mmap_cnt),
69 lli = ll_i2info(inode);
70 (*p)(env, cookie, "%lu/%u %o %u %d %p "DFID,
71 inode->i_ino, inode->i_generation, inode->i_mode,
72 inode->i_nlink, atomic_read(&inode->i_count),
73 lli->lli_clob, PFID(&lli->lli_fid));
78 static int vvp_attr_get(const struct lu_env *env, struct cl_object *obj,
81 struct inode *inode = ccc_object_inode(obj);
84 * lov overwrites most of these fields in
85 * lov_attr_get()->...lov_merge_lvb_kms(), except when inode
86 * attributes are newer.
89 attr->cat_size = i_size_read(inode);
90 attr->cat_mtime = LTIME_S(inode->i_mtime);
91 attr->cat_atime = LTIME_S(inode->i_atime);
92 attr->cat_ctime = LTIME_S(inode->i_ctime);
93 attr->cat_blocks = inode->i_blocks;
94 attr->cat_uid = from_kuid(&init_user_ns, inode->i_uid);
95 attr->cat_gid = from_kgid(&init_user_ns, inode->i_gid);
96 /* KMS is not known by this layer */
97 return 0; /* layers below have to fill in the rest */
100 static int vvp_attr_set(const struct lu_env *env, struct cl_object *obj,
101 const struct cl_attr *attr, unsigned valid)
103 struct inode *inode = ccc_object_inode(obj);
106 inode->i_uid = make_kuid(&init_user_ns, attr->cat_uid);
108 inode->i_gid = make_kgid(&init_user_ns, attr->cat_gid);
109 if (valid & CAT_ATIME)
110 LTIME_S(inode->i_atime) = attr->cat_atime;
111 if (valid & CAT_MTIME)
112 LTIME_S(inode->i_mtime) = attr->cat_mtime;
113 if (valid & CAT_CTIME)
114 LTIME_S(inode->i_ctime) = attr->cat_ctime;
115 if (0 && valid & CAT_SIZE)
116 cl_isize_write_nolock(inode, attr->cat_size);
117 /* not currently necessary */
118 if (0 && valid & (CAT_UID|CAT_GID|CAT_SIZE))
119 mark_inode_dirty(inode);
123 static int vvp_conf_set(const struct lu_env *env, struct cl_object *obj,
124 const struct cl_object_conf *conf)
126 struct ll_inode_info *lli = ll_i2info(conf->coc_inode);
128 if (conf->coc_opc == OBJECT_CONF_INVALIDATE) {
129 CDEBUG(D_VFSTRACE, DFID ": losing layout lock\n",
130 PFID(&lli->lli_fid));
132 ll_layout_version_set(lli, LL_LAYOUT_GEN_NONE);
134 /* Clean up page mmap for this inode.
135 * The reason for us to do this is that if the page has
136 * already been installed into memory space, the process
137 * can access it without interacting with lustre, so this
138 * page may be stale due to layout change, and the process
139 * will never be notified.
140 * This operation is expensive but mmap processes have to pay
141 * a price themselves. */
142 unmap_mapping_range(conf->coc_inode->i_mapping,
143 0, OBD_OBJECT_EOF, 0);
148 static int vvp_prune(const struct lu_env *env, struct cl_object *obj)
150 struct inode *inode = ccc_object_inode(obj);
154 rc = cl_sync_file_range(inode, 0, OBD_OBJECT_EOF, CL_FSYNC_LOCAL, 1);
156 CDEBUG(D_VFSTRACE, DFID ": writeback failed: %d\n",
157 PFID(lu_object_fid(&obj->co_lu)), rc);
161 truncate_inode_pages(inode->i_mapping, 0);
165 static const struct cl_object_operations vvp_ops = {
166 .coo_page_init = vvp_page_init,
167 .coo_lock_init = vvp_lock_init,
168 .coo_io_init = vvp_io_init,
169 .coo_attr_get = vvp_attr_get,
170 .coo_attr_set = vvp_attr_set,
171 .coo_conf_set = vvp_conf_set,
172 .coo_prune = vvp_prune,
173 .coo_glimpse = ccc_object_glimpse
176 static const struct lu_object_operations vvp_lu_obj_ops = {
177 .loo_object_init = ccc_object_init,
178 .loo_object_free = ccc_object_free,
179 .loo_object_print = vvp_object_print
182 struct ccc_object *cl_inode2ccc(struct inode *inode)
184 struct cl_inode_info *lli = cl_i2info(inode);
185 struct cl_object *obj = lli->lli_clob;
186 struct lu_object *lu;
188 LASSERT(obj != NULL);
189 lu = lu_object_locate(obj->co_lu.lo_header, &vvp_device_type);
194 struct lu_object *vvp_object_alloc(const struct lu_env *env,
195 const struct lu_object_header *hdr,
196 struct lu_device *dev)
198 return ccc_object_alloc(env, hdr, dev, &vvp_ops, &vvp_lu_obj_ops);