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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.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) inode: %p ",
70 atomic_read(&obj->vob_mmap_cnt),
73 lli = ll_i2info(inode);
74 (*p)(env, cookie, "%lu/%u %o %u %d %p "DFID,
75 inode->i_ino, inode->i_generation, inode->i_mode,
76 inode->i_nlink, atomic_read(&inode->i_count),
77 lli->lli_clob, PFID(&lli->lli_fid));
82 static int vvp_attr_get(const struct lu_env *env, struct cl_object *obj,
85 struct inode *inode = vvp_object_inode(obj);
88 * lov overwrites most of these fields in
89 * lov_attr_get()->...lov_merge_lvb_kms(), except when inode
90 * attributes are newer.
93 attr->cat_size = i_size_read(inode);
94 attr->cat_mtime = inode->i_mtime.tv_sec;
95 attr->cat_atime = inode->i_atime.tv_sec;
96 attr->cat_ctime = inode->i_ctime.tv_sec;
97 attr->cat_blocks = inode->i_blocks;
98 attr->cat_uid = from_kuid(&init_user_ns, inode->i_uid);
99 attr->cat_gid = from_kgid(&init_user_ns, inode->i_gid);
100 attr->cat_projid = ll_i2info(inode)->lli_projid;
101 /* KMS is not known by this layer */
102 return 0; /* layers below have to fill in the rest */
105 static int vvp_attr_update(const struct lu_env *env, struct cl_object *obj,
106 const struct cl_attr *attr, unsigned valid)
108 struct inode *inode = vvp_object_inode(obj);
111 inode->i_uid = make_kuid(&init_user_ns, attr->cat_uid);
113 inode->i_gid = make_kgid(&init_user_ns, attr->cat_gid);
114 if (valid & CAT_ATIME)
115 inode->i_atime.tv_sec = attr->cat_atime;
116 if (valid & CAT_MTIME)
117 inode->i_mtime.tv_sec = attr->cat_mtime;
118 if (valid & CAT_CTIME)
119 inode->i_ctime.tv_sec = attr->cat_ctime;
120 if (0 && valid & CAT_SIZE)
121 i_size_write(inode, attr->cat_size);
122 if (valid & CAT_PROJID)
123 ll_i2info(inode)->lli_projid = attr->cat_projid;
124 /* not currently necessary */
125 if (0 && valid & (CAT_UID|CAT_GID|CAT_SIZE|CAT_PROJID))
126 mark_inode_dirty(inode);
130 static int vvp_conf_set(const struct lu_env *env, struct cl_object *obj,
131 const struct cl_object_conf *conf)
133 struct ll_inode_info *lli = ll_i2info(conf->coc_inode);
135 if (conf->coc_opc == OBJECT_CONF_INVALIDATE) {
136 CDEBUG(D_VFSTRACE, DFID ": losing layout lock\n",
137 PFID(&lli->lli_fid));
139 ll_layout_version_set(lli, CL_LAYOUT_GEN_NONE);
141 /* Clean up page mmap for this inode.
142 * The reason for us to do this is that if the page has
143 * already been installed into memory space, the process
144 * can access it without interacting with lustre, so this
145 * page may be stale due to layout change, and the process
146 * will never be notified.
147 * This operation is expensive but mmap processes have to pay
148 * a price themselves. */
149 unmap_mapping_range(conf->coc_inode->i_mapping,
150 0, OBD_OBJECT_EOF, 0);
151 pcc_layout_invalidate(conf->coc_inode);
156 static int vvp_prune(const struct lu_env *env, struct cl_object *obj)
158 struct inode *inode = vvp_object_inode(obj);
162 rc = cl_sync_file_range(inode, 0, OBD_OBJECT_EOF, CL_FSYNC_LOCAL, 1);
164 CDEBUG(D_VFSTRACE, DFID ": writeback failed: %d\n",
165 PFID(lu_object_fid(&obj->co_lu)), rc);
169 ll_truncate_inode_pages_final(inode);
170 mapping_clear_exiting(inode->i_mapping);
175 static int vvp_object_glimpse(const struct lu_env *env,
176 const struct cl_object *obj, struct ost_lvb *lvb)
178 struct inode *inode = vvp_object_inode(obj);
181 lvb->lvb_mtime = inode->i_mtime.tv_sec;
182 lvb->lvb_atime = inode->i_atime.tv_sec;
183 lvb->lvb_ctime = inode->i_ctime.tv_sec;
186 * LU-417: Add dirty pages block count lest i_blocks reports 0, some
187 * "cp" or "tar" on remote node may think it's a completely sparse file
190 if (lvb->lvb_size > 0 && lvb->lvb_blocks == 0)
191 lvb->lvb_blocks = dirty_cnt(inode);
196 static void vvp_req_attr_set(const struct lu_env *env, struct cl_object *obj,
197 struct cl_req_attr *attr)
201 u64 valid_flags = OBD_MD_FLTYPE | OBD_MD_FLUID | OBD_MD_FLGID |
205 inode = vvp_object_inode(obj);
207 if (attr->cra_type == CRT_WRITE) {
208 valid_flags |= OBD_MD_FLMTIME | OBD_MD_FLCTIME;
209 obdo_set_o_projid(oa, ll_i2info(inode)->lli_projid);
210 } else if (attr->cra_type == CRT_READ) {
211 valid_flags |= OBD_MD_FLATIME;
213 obdo_from_inode(oa, inode, valid_flags & attr->cra_flags);
214 obdo_set_parent_fid(oa, &ll_i2info(inode)->lli_fid);
215 if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_INVALID_PFID))
217 memcpy(attr->cra_jobid, ll_i2info(inode)->lli_jobid,
218 sizeof(attr->cra_jobid));
221 static const struct cl_object_operations vvp_ops = {
222 .coo_page_init = vvp_page_init,
223 .coo_io_init = vvp_io_init,
224 .coo_attr_get = vvp_attr_get,
225 .coo_attr_update = vvp_attr_update,
226 .coo_conf_set = vvp_conf_set,
227 .coo_prune = vvp_prune,
228 .coo_glimpse = vvp_object_glimpse,
229 .coo_req_attr_set = vvp_req_attr_set
232 static int vvp_object_init0(const struct lu_env *env,
233 struct vvp_object *vob,
234 const struct cl_object_conf *conf)
236 vob->vob_inode = conf->coc_inode;
237 cl_object_page_init(&vob->vob_cl, sizeof(struct vvp_page));
241 static int vvp_object_init(const struct lu_env *env, struct lu_object *obj,
242 const struct lu_object_conf *conf)
244 struct vvp_device *dev = lu2vvp_dev(obj->lo_dev);
245 struct vvp_object *vob = lu2vvp(obj);
246 struct lu_object *below;
247 struct lu_device *under;
250 under = &dev->vdv_next->cd_lu_dev;
251 below = under->ld_ops->ldo_object_alloc(env, obj->lo_header, under);
253 const struct cl_object_conf *cconf;
255 cconf = lu2cl_conf(conf);
256 lu_object_add(obj, below);
257 result = vvp_object_init0(env, vob, cconf);
264 static void vvp_object_free_rcu(struct rcu_head *head)
266 struct vvp_object *vob = container_of(head, struct vvp_object,
267 vob_header.coh_lu.loh_rcu);
269 kmem_cache_free(vvp_object_kmem, vob);
272 static void vvp_object_free(const struct lu_env *env, struct lu_object *obj)
274 struct vvp_object *vob = lu2vvp(obj);
277 lu_object_header_fini(obj->lo_header);
278 OBD_FREE_PRE(vob, sizeof(*vob), "slab-freed");
279 call_rcu(&vob->vob_header.coh_lu.loh_rcu, vvp_object_free_rcu);
282 static const struct lu_object_operations vvp_lu_obj_ops = {
283 .loo_object_init = vvp_object_init,
284 .loo_object_free = vvp_object_free,
285 .loo_object_print = vvp_object_print,
288 struct vvp_object *cl_inode2vvp(struct inode *inode)
290 struct ll_inode_info *lli = ll_i2info(inode);
291 struct cl_object *obj = lli->lli_clob;
292 struct lu_object *lu;
294 LASSERT(obj != NULL);
295 lu = lu_object_locate(obj->co_lu.lo_header, &vvp_device_type);
301 struct lu_object *vvp_object_alloc(const struct lu_env *env,
302 const struct lu_object_header *unused,
303 struct lu_device *dev)
305 struct vvp_object *vob;
306 struct lu_object *obj;
308 OBD_SLAB_ALLOC_PTR_GFP(vob, vvp_object_kmem, GFP_NOFS);
310 struct cl_object_header *hdr;
312 obj = &vob->vob_cl.co_lu;
313 hdr = &vob->vob_header;
314 cl_object_header_init(hdr);
315 hdr->coh_page_bufsize = cfs_size_round(sizeof(struct cl_page));
317 lu_object_init(obj, &hdr->coh_lu, dev);
318 lu_object_add_top(&hdr->coh_lu, obj);
320 vob->vob_cl.co_ops = &vvp_ops;
321 obj->lo_ops = &vvp_lu_obj_ops;