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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).
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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, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
31 * cl_object implementation for VVP layer.
33 * Author: Nikita Danilov <nikita.danilov@sun.com>
36 #define DEBUG_SUBSYSTEM S_LLITE
38 #include <linux/user_namespace.h>
39 #include <linux/uidgid.h>
41 #include <libcfs/libcfs.h>
44 #include "llite_internal.h"
45 #include "vvp_internal.h"
47 /*****************************************************************************
53 int vvp_object_invariant(const struct cl_object *obj)
55 struct inode *inode = vvp_object_inode(obj);
56 struct ll_inode_info *lli = ll_i2info(inode);
58 return (S_ISREG(inode->i_mode) || inode->i_mode == 0) &&
62 static int vvp_object_print(const struct lu_env *env, void *cookie,
63 lu_printer_t p, const struct lu_object *o)
65 struct vvp_object *obj = lu2vvp(o);
66 struct inode *inode = obj->vob_inode;
67 struct ll_inode_info *lli;
69 (*p)(env, cookie, "(%d %d) inode: %p ",
70 atomic_read(&obj->vob_transient_pages),
71 atomic_read(&obj->vob_mmap_cnt),
74 lli = ll_i2info(inode);
75 (*p)(env, cookie, "%lu/%u %o %u %d %p "DFID,
76 inode->i_ino, inode->i_generation, inode->i_mode,
77 inode->i_nlink, atomic_read(&inode->i_count),
78 lli->lli_clob, PFID(&lli->lli_fid));
83 static int vvp_attr_get(const struct lu_env *env, struct cl_object *obj,
86 struct inode *inode = vvp_object_inode(obj);
89 * lov overwrites most of these fields in
90 * lov_attr_get()->...lov_merge_lvb_kms(), except when inode
91 * attributes are newer.
94 attr->cat_size = i_size_read(inode);
95 attr->cat_mtime = inode->i_mtime.tv_sec;
96 attr->cat_atime = inode->i_atime.tv_sec;
97 attr->cat_ctime = inode->i_ctime.tv_sec;
98 attr->cat_blocks = inode->i_blocks;
99 attr->cat_uid = from_kuid(&init_user_ns, inode->i_uid);
100 attr->cat_gid = from_kgid(&init_user_ns, inode->i_gid);
101 attr->cat_projid = ll_i2info(inode)->lli_projid;
102 /* KMS is not known by this layer */
103 return 0; /* layers below have to fill in the rest */
106 static int vvp_attr_update(const struct lu_env *env, struct cl_object *obj,
107 const struct cl_attr *attr, unsigned valid)
109 struct inode *inode = vvp_object_inode(obj);
112 inode->i_uid = make_kuid(&init_user_ns, attr->cat_uid);
114 inode->i_gid = make_kgid(&init_user_ns, attr->cat_gid);
115 if (valid & CAT_ATIME)
116 inode->i_atime.tv_sec = attr->cat_atime;
117 if (valid & CAT_MTIME)
118 inode->i_mtime.tv_sec = attr->cat_mtime;
119 if (valid & CAT_CTIME)
120 inode->i_ctime.tv_sec = attr->cat_ctime;
121 if (0 && valid & CAT_SIZE)
122 i_size_write(inode, attr->cat_size);
123 if (valid & CAT_PROJID)
124 ll_i2info(inode)->lli_projid = attr->cat_projid;
125 /* not currently necessary */
126 if (0 && valid & (CAT_UID|CAT_GID|CAT_SIZE|CAT_PROJID))
127 mark_inode_dirty(inode);
131 static int vvp_conf_set(const struct lu_env *env, struct cl_object *obj,
132 const struct cl_object_conf *conf)
134 struct ll_inode_info *lli = ll_i2info(conf->coc_inode);
136 if (conf->coc_opc == OBJECT_CONF_INVALIDATE) {
137 CDEBUG(D_VFSTRACE, DFID ": losing layout lock\n",
138 PFID(&lli->lli_fid));
140 ll_layout_version_set(lli, CL_LAYOUT_GEN_NONE);
142 /* Clean up page mmap for this inode.
143 * The reason for us to do this is that if the page has
144 * already been installed into memory space, the process
145 * can access it without interacting with lustre, so this
146 * page may be stale due to layout change, and the process
147 * will never be notified.
148 * This operation is expensive but mmap processes have to pay
149 * a price themselves. */
150 unmap_mapping_range(conf->coc_inode->i_mapping,
151 0, OBD_OBJECT_EOF, 0);
152 pcc_layout_invalidate(conf->coc_inode);
157 static int vvp_prune(const struct lu_env *env, struct cl_object *obj)
159 struct inode *inode = vvp_object_inode(obj);
163 rc = cl_sync_file_range(inode, 0, OBD_OBJECT_EOF, CL_FSYNC_LOCAL, 1);
165 CDEBUG(D_VFSTRACE, DFID ": writeback failed: %d\n",
166 PFID(lu_object_fid(&obj->co_lu)), rc);
170 truncate_inode_pages(inode->i_mapping, 0);
171 if (inode->i_mapping->nrpages) {
172 CDEBUG(D_VFSTRACE, DFID ": still has %lu pages remaining\n",
173 PFID(lu_object_fid(&obj->co_lu)),
174 inode->i_mapping->nrpages);
181 static int vvp_object_glimpse(const struct lu_env *env,
182 const struct cl_object *obj, struct ost_lvb *lvb)
184 struct inode *inode = vvp_object_inode(obj);
187 lvb->lvb_mtime = inode->i_mtime.tv_sec;
188 lvb->lvb_atime = inode->i_atime.tv_sec;
189 lvb->lvb_ctime = inode->i_ctime.tv_sec;
192 * LU-417: Add dirty pages block count lest i_blocks reports 0, some
193 * "cp" or "tar" on remote node may think it's a completely sparse file
196 if (lvb->lvb_size > 0 && lvb->lvb_blocks == 0)
197 lvb->lvb_blocks = dirty_cnt(inode);
202 static void vvp_req_attr_set(const struct lu_env *env, struct cl_object *obj,
203 struct cl_req_attr *attr)
207 u64 valid_flags = OBD_MD_FLTYPE | OBD_MD_FLUID | OBD_MD_FLGID;
210 inode = vvp_object_inode(obj);
212 if (attr->cra_type == CRT_WRITE) {
213 valid_flags |= OBD_MD_FLMTIME | OBD_MD_FLCTIME;
214 obdo_set_o_projid(oa, ll_i2info(inode)->lli_projid);
215 } else if (attr->cra_type == CRT_READ) {
216 valid_flags |= OBD_MD_FLATIME;
218 obdo_from_inode(oa, inode, valid_flags & attr->cra_flags);
219 obdo_set_parent_fid(oa, &ll_i2info(inode)->lli_fid);
220 if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_INVALID_PFID))
222 memcpy(attr->cra_jobid, ll_i2info(inode)->lli_jobid,
223 sizeof(attr->cra_jobid));
226 static const struct cl_object_operations vvp_ops = {
227 .coo_page_init = vvp_page_init,
228 .coo_io_init = vvp_io_init,
229 .coo_attr_get = vvp_attr_get,
230 .coo_attr_update = vvp_attr_update,
231 .coo_conf_set = vvp_conf_set,
232 .coo_prune = vvp_prune,
233 .coo_glimpse = vvp_object_glimpse,
234 .coo_req_attr_set = vvp_req_attr_set
237 static int vvp_object_init0(const struct lu_env *env,
238 struct vvp_object *vob,
239 const struct cl_object_conf *conf)
241 vob->vob_inode = conf->coc_inode;
242 atomic_set(&vob->vob_transient_pages, 0);
243 cl_object_page_init(&vob->vob_cl, sizeof(struct vvp_page));
247 static int vvp_object_init(const struct lu_env *env, struct lu_object *obj,
248 const struct lu_object_conf *conf)
250 struct vvp_device *dev = lu2vvp_dev(obj->lo_dev);
251 struct vvp_object *vob = lu2vvp(obj);
252 struct lu_object *below;
253 struct lu_device *under;
256 under = &dev->vdv_next->cd_lu_dev;
257 below = under->ld_ops->ldo_object_alloc(env, obj->lo_header, under);
259 const struct cl_object_conf *cconf;
261 cconf = lu2cl_conf(conf);
262 lu_object_add(obj, below);
263 result = vvp_object_init0(env, vob, cconf);
270 static void vvp_object_free_rcu(struct rcu_head *head)
272 struct vvp_object *vob = container_of(head, struct vvp_object,
273 vob_header.coh_lu.loh_rcu);
275 kmem_cache_free(vvp_object_kmem, vob);
278 static void vvp_object_free(const struct lu_env *env, struct lu_object *obj)
280 struct vvp_object *vob = lu2vvp(obj);
283 lu_object_header_fini(obj->lo_header);
284 OBD_FREE_PRE(vob, sizeof(*vob), "slab-freed");
285 call_rcu(&vob->vob_header.coh_lu.loh_rcu, vvp_object_free_rcu);
288 static const struct lu_object_operations vvp_lu_obj_ops = {
289 .loo_object_init = vvp_object_init,
290 .loo_object_free = vvp_object_free,
291 .loo_object_print = vvp_object_print,
294 struct vvp_object *cl_inode2vvp(struct inode *inode)
296 struct ll_inode_info *lli = ll_i2info(inode);
297 struct cl_object *obj = lli->lli_clob;
298 struct lu_object *lu;
300 LASSERT(obj != NULL);
301 lu = lu_object_locate(obj->co_lu.lo_header, &vvp_device_type);
307 struct lu_object *vvp_object_alloc(const struct lu_env *env,
308 const struct lu_object_header *unused,
309 struct lu_device *dev)
311 struct vvp_object *vob;
312 struct lu_object *obj;
314 OBD_SLAB_ALLOC_PTR_GFP(vob, vvp_object_kmem, GFP_NOFS);
316 struct cl_object_header *hdr;
318 obj = &vob->vob_cl.co_lu;
319 hdr = &vob->vob_header;
320 cl_object_header_init(hdr);
321 hdr->coh_page_bufsize = cfs_size_round(sizeof(struct cl_page));
323 lu_object_init(obj, &hdr->coh_lu, dev);
324 lu_object_add_top(&hdr->coh_lu, obj);
326 vob->vob_cl.co_ops = &vvp_ops;
327 obj->lo_ops = &vvp_lu_obj_ops;