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11 * WITHOUT ANY WARRANTY; without even the implied warranty of
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13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
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18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
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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 "vvp_internal.h"
49 /*****************************************************************************
55 static int vvp_object_print(const struct lu_env *env, void *cookie,
56 lu_printer_t p, const struct lu_object *o)
58 struct ccc_object *obj = lu2ccc(o);
59 struct inode *inode = obj->cob_inode;
60 struct ll_inode_info *lli;
62 (*p)(env, cookie, "(%s %d %d) inode: %p ",
63 list_empty(&obj->cob_pending_list) ? "-" : "+",
64 obj->cob_transient_pages, atomic_read(&obj->cob_mmap_cnt),
67 lli = ll_i2info(inode);
68 (*p)(env, cookie, "%lu/%u %o %u %d %p "DFID,
69 inode->i_ino, inode->i_generation, inode->i_mode,
70 inode->i_nlink, atomic_read(&inode->i_count),
71 lli->lli_clob, PFID(&lli->lli_fid));
76 static int vvp_attr_get(const struct lu_env *env, struct cl_object *obj,
79 struct inode *inode = ccc_object_inode(obj);
82 * lov overwrites most of these fields in
83 * lov_attr_get()->...lov_merge_lvb_kms(), except when inode
84 * attributes are newer.
87 attr->cat_size = i_size_read(inode);
88 attr->cat_mtime = LTIME_S(inode->i_mtime);
89 attr->cat_atime = LTIME_S(inode->i_atime);
90 attr->cat_ctime = LTIME_S(inode->i_ctime);
91 attr->cat_blocks = inode->i_blocks;
92 attr->cat_uid = from_kuid(&init_user_ns, inode->i_uid);
93 attr->cat_gid = from_kgid(&init_user_ns, inode->i_gid);
94 /* KMS is not known by this layer */
95 return 0; /* layers below have to fill in the rest */
98 static int vvp_attr_set(const struct lu_env *env, struct cl_object *obj,
99 const struct cl_attr *attr, unsigned valid)
101 struct inode *inode = ccc_object_inode(obj);
104 inode->i_uid = make_kuid(&init_user_ns, attr->cat_uid);
106 inode->i_gid = make_kgid(&init_user_ns, attr->cat_gid);
107 if (valid & CAT_ATIME)
108 LTIME_S(inode->i_atime) = attr->cat_atime;
109 if (valid & CAT_MTIME)
110 LTIME_S(inode->i_mtime) = attr->cat_mtime;
111 if (valid & CAT_CTIME)
112 LTIME_S(inode->i_ctime) = attr->cat_ctime;
113 if (0 && valid & CAT_SIZE)
114 cl_isize_write_nolock(inode, attr->cat_size);
115 /* not currently necessary */
116 if (0 && valid & (CAT_UID|CAT_GID|CAT_SIZE))
117 mark_inode_dirty(inode);
121 static int vvp_conf_set(const struct lu_env *env, struct cl_object *obj,
122 const struct cl_object_conf *conf)
124 struct ll_inode_info *lli = ll_i2info(conf->coc_inode);
126 if (conf->coc_opc == OBJECT_CONF_INVALIDATE) {
127 CDEBUG(D_VFSTRACE, DFID ": losing layout lock\n",
128 PFID(&lli->lli_fid));
130 ll_layout_version_set(lli, LL_LAYOUT_GEN_NONE);
132 /* Clean up page mmap for this inode.
133 * The reason for us to do this is that if the page has
134 * already been installed into memory space, the process
135 * can access it without interacting with lustre, so this
136 * page may be stale due to layout change, and the process
137 * will never be notified.
138 * This operation is expensive but mmap processes have to pay
139 * a price themselves. */
140 unmap_mapping_range(conf->coc_inode->i_mapping,
141 0, OBD_OBJECT_EOF, 0);
146 static int vvp_prune(const struct lu_env *env, struct cl_object *obj)
148 struct inode *inode = ccc_object_inode(obj);
152 rc = cl_sync_file_range(inode, 0, OBD_OBJECT_EOF, CL_FSYNC_ALL, 1);
154 truncate_inode_pages(inode->i_mapping, 0);
159 static const struct cl_object_operations vvp_ops = {
160 .coo_page_init = vvp_page_init,
161 .coo_lock_init = vvp_lock_init,
162 .coo_io_init = vvp_io_init,
163 .coo_attr_get = vvp_attr_get,
164 .coo_attr_set = vvp_attr_set,
165 .coo_conf_set = vvp_conf_set,
166 .coo_prune = vvp_prune,
167 .coo_glimpse = ccc_object_glimpse
170 static const struct lu_object_operations vvp_lu_obj_ops = {
171 .loo_object_init = ccc_object_init,
172 .loo_object_free = ccc_object_free,
173 .loo_object_print = vvp_object_print
176 struct ccc_object *cl_inode2ccc(struct inode *inode)
178 struct cl_inode_info *lli = cl_i2info(inode);
179 struct cl_object *obj = lli->lli_clob;
180 struct lu_object *lu;
182 LASSERT(obj != NULL);
183 lu = lu_object_locate(obj->co_lu.lo_header, &vvp_device_type);
188 struct lu_object *vvp_object_alloc(const struct lu_env *env,
189 const struct lu_object_header *hdr,
190 struct lu_device *dev)
192 return ccc_object_alloc(env, hdr, dev, &vvp_ops, &vvp_lu_obj_ops);