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) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2012, 2015, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 * cl_object implementation for VVP layer.
34 * Author: Nikita Danilov <nikita.danilov@sun.com>
37 #define DEBUG_SUBSYSTEM S_LLITE
39 #include "../../include/linux/libcfs/libcfs.h"
41 #include "../include/obd.h"
43 #include "llite_internal.h"
44 #include "vvp_internal.h"
46 /*****************************************************************************
52 int vvp_object_invariant(const struct cl_object *obj)
54 struct inode *inode = vvp_object_inode(obj);
55 struct ll_inode_info *lli = ll_i2info(inode);
57 return (S_ISREG(inode->i_mode) || inode->i_mode == 0) &&
61 static int vvp_object_print(const struct lu_env *env, void *cookie,
62 lu_printer_t p, const struct lu_object *o)
64 struct vvp_object *obj = lu2vvp(o);
65 struct inode *inode = obj->vob_inode;
66 struct ll_inode_info *lli;
68 (*p)(env, cookie, "(%d %d) inode: %p ",
69 atomic_read(&obj->vob_transient_pages),
70 atomic_read(&obj->vob_mmap_cnt), inode);
72 lli = ll_i2info(inode);
73 (*p)(env, cookie, "%lu/%u %o %u %d %p " DFID,
74 inode->i_ino, inode->i_generation, inode->i_mode,
75 inode->i_nlink, atomic_read(&inode->i_count),
76 lli->lli_clob, PFID(&lli->lli_fid));
81 static int vvp_attr_get(const struct lu_env *env, struct cl_object *obj,
84 struct inode *inode = vvp_object_inode(obj);
87 * lov overwrites most of these fields in
88 * lov_attr_get()->...lov_merge_lvb_kms(), except when inode
89 * attributes are newer.
92 attr->cat_size = i_size_read(inode);
93 attr->cat_mtime = inode->i_mtime.tv_sec;
94 attr->cat_atime = inode->i_atime.tv_sec;
95 attr->cat_ctime = inode->i_ctime.tv_sec;
96 attr->cat_blocks = inode->i_blocks;
97 attr->cat_uid = from_kuid(&init_user_ns, inode->i_uid);
98 attr->cat_gid = from_kgid(&init_user_ns, inode->i_gid);
99 /* KMS is not known by this layer */
100 return 0; /* layers below have to fill in the rest */
103 static int vvp_attr_update(const struct lu_env *env, struct cl_object *obj,
104 const struct cl_attr *attr, unsigned int valid)
106 struct inode *inode = vvp_object_inode(obj);
109 inode->i_uid = make_kuid(&init_user_ns, attr->cat_uid);
111 inode->i_gid = make_kgid(&init_user_ns, attr->cat_gid);
112 if (valid & CAT_ATIME)
113 inode->i_atime.tv_sec = attr->cat_atime;
114 if (valid & CAT_MTIME)
115 inode->i_mtime.tv_sec = attr->cat_mtime;
116 if (valid & CAT_CTIME)
117 inode->i_ctime.tv_sec = attr->cat_ctime;
118 if (0 && valid & CAT_SIZE)
119 i_size_write(inode, attr->cat_size);
120 /* not currently necessary */
121 if (0 && valid & (CAT_UID | CAT_GID | CAT_SIZE))
122 mark_inode_dirty(inode);
126 static int vvp_conf_set(const struct lu_env *env, struct cl_object *obj,
127 const struct cl_object_conf *conf)
129 struct ll_inode_info *lli = ll_i2info(conf->coc_inode);
131 if (conf->coc_opc == OBJECT_CONF_INVALIDATE) {
132 CDEBUG(D_VFSTRACE, DFID ": losing layout lock\n",
133 PFID(&lli->lli_fid));
135 ll_layout_version_set(lli, CL_LAYOUT_GEN_NONE);
137 /* Clean up page mmap for this inode.
138 * The reason for us to do this is that if the page has
139 * already been installed into memory space, the process
140 * can access it without interacting with lustre, so this
141 * page may be stale due to layout change, and the process
142 * will never be notified.
143 * This operation is expensive but mmap processes have to pay
144 * a price themselves.
146 unmap_mapping_range(conf->coc_inode->i_mapping,
147 0, OBD_OBJECT_EOF, 0);
153 static int vvp_prune(const struct lu_env *env, struct cl_object *obj)
155 struct inode *inode = vvp_object_inode(obj);
158 rc = cl_sync_file_range(inode, 0, OBD_OBJECT_EOF, CL_FSYNC_LOCAL, 1);
160 CDEBUG(D_VFSTRACE, DFID ": writeback failed: %d\n",
161 PFID(lu_object_fid(&obj->co_lu)), rc);
165 truncate_inode_pages(inode->i_mapping, 0);
169 static int vvp_object_glimpse(const struct lu_env *env,
170 const struct cl_object *obj, struct ost_lvb *lvb)
172 struct inode *inode = vvp_object_inode(obj);
174 lvb->lvb_mtime = LTIME_S(inode->i_mtime);
175 lvb->lvb_atime = LTIME_S(inode->i_atime);
176 lvb->lvb_ctime = LTIME_S(inode->i_ctime);
178 * LU-417: Add dirty pages block count lest i_blocks reports 0, some
179 * "cp" or "tar" on remote node may think it's a completely sparse file
182 if (lvb->lvb_size > 0 && lvb->lvb_blocks == 0)
183 lvb->lvb_blocks = dirty_cnt(inode);
187 static void vvp_req_attr_set(const struct lu_env *env, struct cl_object *obj,
188 struct cl_req_attr *attr)
190 u64 valid_flags = OBD_MD_FLTYPE;
195 inode = vvp_object_inode(obj);
197 if (attr->cra_type == CRT_WRITE)
198 valid_flags |= OBD_MD_FLMTIME | OBD_MD_FLCTIME |
199 OBD_MD_FLUID | OBD_MD_FLGID;
200 obdo_from_inode(oa, inode, valid_flags & attr->cra_flags);
201 obdo_set_parent_fid(oa, &ll_i2info(inode)->lli_fid);
202 if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_INVALID_PFID))
204 memcpy(attr->cra_jobid, ll_i2info(inode)->lli_jobid, LUSTRE_JOBID_SIZE);
207 static const struct cl_object_operations vvp_ops = {
208 .coo_page_init = vvp_page_init,
209 .coo_lock_init = vvp_lock_init,
210 .coo_io_init = vvp_io_init,
211 .coo_attr_get = vvp_attr_get,
212 .coo_attr_update = vvp_attr_update,
213 .coo_conf_set = vvp_conf_set,
214 .coo_prune = vvp_prune,
215 .coo_glimpse = vvp_object_glimpse,
216 .coo_req_attr_set = vvp_req_attr_set
219 static int vvp_object_init0(const struct lu_env *env,
220 struct vvp_object *vob,
221 const struct cl_object_conf *conf)
223 vob->vob_inode = conf->coc_inode;
224 atomic_set(&vob->vob_transient_pages, 0);
225 cl_object_page_init(&vob->vob_cl, sizeof(struct vvp_page));
229 static int vvp_object_init(const struct lu_env *env, struct lu_object *obj,
230 const struct lu_object_conf *conf)
232 struct vvp_device *dev = lu2vvp_dev(obj->lo_dev);
233 struct vvp_object *vob = lu2vvp(obj);
234 struct lu_object *below;
235 struct lu_device *under;
238 under = &dev->vdv_next->cd_lu_dev;
239 below = under->ld_ops->ldo_object_alloc(env, obj->lo_header, under);
241 const struct cl_object_conf *cconf;
243 cconf = lu2cl_conf(conf);
244 lu_object_add(obj, below);
245 result = vvp_object_init0(env, vob, cconf);
253 static void vvp_object_free(const struct lu_env *env, struct lu_object *obj)
255 struct vvp_object *vob = lu2vvp(obj);
258 lu_object_header_fini(obj->lo_header);
259 kmem_cache_free(vvp_object_kmem, vob);
262 static const struct lu_object_operations vvp_lu_obj_ops = {
263 .loo_object_init = vvp_object_init,
264 .loo_object_free = vvp_object_free,
265 .loo_object_print = vvp_object_print,
268 struct vvp_object *cl_inode2vvp(struct inode *inode)
270 struct ll_inode_info *lli = ll_i2info(inode);
271 struct cl_object *obj = lli->lli_clob;
272 struct lu_object *lu;
274 lu = lu_object_locate(obj->co_lu.lo_header, &vvp_device_type);
279 struct lu_object *vvp_object_alloc(const struct lu_env *env,
280 const struct lu_object_header *unused,
281 struct lu_device *dev)
283 struct vvp_object *vob;
284 struct lu_object *obj;
286 vob = kmem_cache_zalloc(vvp_object_kmem, GFP_NOFS);
288 struct cl_object_header *hdr;
290 obj = &vob->vob_cl.co_lu;
291 hdr = &vob->vob_header;
292 cl_object_header_init(hdr);
293 hdr->coh_page_bufsize = cfs_size_round(sizeof(struct cl_page));
295 lu_object_init(obj, &hdr->coh_lu, dev);
296 lu_object_add_top(&hdr->coh_lu, obj);
298 vob->vob_cl.co_ops = &vvp_ops;
299 obj->lo_ops = &vvp_lu_obj_ops;