1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * (C) 2001 Clemson University and The University of Chicago
4 *
5 * See COPYING in top-level directory.
6 */
7
8 #include "protocol.h"
9 #include "orangefs-kernel.h"
10 #include "orangefs-bufmap.h"
11
12 #include <linux/parser.h>
13 #include <linux/hashtable.h>
14 #include <linux/seq_file.h>
15
16 /* a cache for orangefs-inode objects (i.e. orangefs inode private data) */
17 static struct kmem_cache *orangefs_inode_cache;
18
19 /* list for storing orangefs specific superblocks in use */
20 LIST_HEAD(orangefs_superblocks);
21
22 DEFINE_SPINLOCK(orangefs_superblocks_lock);
23
24 enum {
25 Opt_intr,
26 Opt_acl,
27 Opt_local_lock,
28
29 Opt_err
30 };
31
32 static const match_table_t tokens = {
33 { Opt_acl, "acl" },
34 { Opt_intr, "intr" },
35 { Opt_local_lock, "local_lock" },
36 { Opt_err, NULL }
37 };
38
39 uint64_t orangefs_features;
40
orangefs_show_options(struct seq_file * m,struct dentry * root)41 static int orangefs_show_options(struct seq_file *m, struct dentry *root)
42 {
43 struct orangefs_sb_info_s *orangefs_sb = ORANGEFS_SB(root->d_sb);
44
45 if (root->d_sb->s_flags & SB_POSIXACL)
46 seq_puts(m, ",acl");
47 if (orangefs_sb->flags & ORANGEFS_OPT_INTR)
48 seq_puts(m, ",intr");
49 if (orangefs_sb->flags & ORANGEFS_OPT_LOCAL_LOCK)
50 seq_puts(m, ",local_lock");
51 return 0;
52 }
53
parse_mount_options(struct super_block * sb,char * options,int silent)54 static int parse_mount_options(struct super_block *sb, char *options,
55 int silent)
56 {
57 struct orangefs_sb_info_s *orangefs_sb = ORANGEFS_SB(sb);
58 substring_t args[MAX_OPT_ARGS];
59 char *p;
60
61 /*
62 * Force any potential flags that might be set from the mount
63 * to zero, ie, initialize to unset.
64 */
65 sb->s_flags &= ~SB_POSIXACL;
66 orangefs_sb->flags &= ~ORANGEFS_OPT_INTR;
67 orangefs_sb->flags &= ~ORANGEFS_OPT_LOCAL_LOCK;
68
69 while ((p = strsep(&options, ",")) != NULL) {
70 int token;
71
72 if (!*p)
73 continue;
74
75 token = match_token(p, tokens, args);
76 switch (token) {
77 case Opt_acl:
78 sb->s_flags |= SB_POSIXACL;
79 break;
80 case Opt_intr:
81 orangefs_sb->flags |= ORANGEFS_OPT_INTR;
82 break;
83 case Opt_local_lock:
84 orangefs_sb->flags |= ORANGEFS_OPT_LOCAL_LOCK;
85 break;
86 default:
87 goto fail;
88 }
89 }
90
91 return 0;
92 fail:
93 if (!silent)
94 gossip_err("Error: mount option [%s] is not supported.\n", p);
95 return -EINVAL;
96 }
97
orangefs_inode_cache_ctor(void * req)98 static void orangefs_inode_cache_ctor(void *req)
99 {
100 struct orangefs_inode_s *orangefs_inode = req;
101
102 inode_init_once(&orangefs_inode->vfs_inode);
103 init_rwsem(&orangefs_inode->xattr_sem);
104 }
105
orangefs_alloc_inode(struct super_block * sb)106 static struct inode *orangefs_alloc_inode(struct super_block *sb)
107 {
108 struct orangefs_inode_s *orangefs_inode;
109
110 orangefs_inode = alloc_inode_sb(sb, orangefs_inode_cache, GFP_KERNEL);
111 if (!orangefs_inode)
112 return NULL;
113
114 /*
115 * We want to clear everything except for rw_semaphore and the
116 * vfs_inode.
117 */
118 memset(&orangefs_inode->refn.khandle, 0, 16);
119 orangefs_inode->refn.fs_id = ORANGEFS_FS_ID_NULL;
120 orangefs_inode->last_failed_block_index_read = 0;
121 memset(orangefs_inode->link_target, 0, sizeof(orangefs_inode->link_target));
122
123 gossip_debug(GOSSIP_SUPER_DEBUG,
124 "orangefs_alloc_inode: allocated %p\n",
125 &orangefs_inode->vfs_inode);
126 return &orangefs_inode->vfs_inode;
127 }
128
orangefs_free_inode(struct inode * inode)129 static void orangefs_free_inode(struct inode *inode)
130 {
131 struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
132 struct orangefs_cached_xattr *cx;
133 struct hlist_node *tmp;
134 int i;
135
136 hash_for_each_safe(orangefs_inode->xattr_cache, i, tmp, cx, node) {
137 hlist_del(&cx->node);
138 kfree(cx);
139 }
140
141 kmem_cache_free(orangefs_inode_cache, orangefs_inode);
142 }
143
orangefs_destroy_inode(struct inode * inode)144 static void orangefs_destroy_inode(struct inode *inode)
145 {
146 struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
147
148 gossip_debug(GOSSIP_SUPER_DEBUG,
149 "%s: deallocated %p destroying inode %pU\n",
150 __func__, orangefs_inode, get_khandle_from_ino(inode));
151 }
152
orangefs_write_inode(struct inode * inode,struct writeback_control * wbc)153 static int orangefs_write_inode(struct inode *inode,
154 struct writeback_control *wbc)
155 {
156 gossip_debug(GOSSIP_SUPER_DEBUG, "orangefs_write_inode\n");
157 return orangefs_inode_setattr(inode);
158 }
159
160 /*
161 * NOTE: information filled in here is typically reflected in the
162 * output of the system command 'df'
163 */
orangefs_statfs(struct dentry * dentry,struct kstatfs * buf)164 static int orangefs_statfs(struct dentry *dentry, struct kstatfs *buf)
165 {
166 int ret = -ENOMEM;
167 struct orangefs_kernel_op_s *new_op = NULL;
168 int flags = 0;
169 struct super_block *sb = NULL;
170
171 sb = dentry->d_sb;
172
173 gossip_debug(GOSSIP_SUPER_DEBUG,
174 "%s: called on sb %p (fs_id is %d)\n",
175 __func__,
176 sb,
177 (int)(ORANGEFS_SB(sb)->fs_id));
178
179 new_op = op_alloc(ORANGEFS_VFS_OP_STATFS);
180 if (!new_op)
181 return ret;
182 new_op->upcall.req.statfs.fs_id = ORANGEFS_SB(sb)->fs_id;
183
184 if (ORANGEFS_SB(sb)->flags & ORANGEFS_OPT_INTR)
185 flags = ORANGEFS_OP_INTERRUPTIBLE;
186
187 ret = service_operation(new_op, "orangefs_statfs", flags);
188
189 if (new_op->downcall.status < 0)
190 goto out_op_release;
191
192 gossip_debug(GOSSIP_SUPER_DEBUG,
193 "%s: got %ld blocks available | "
194 "%ld blocks total | %ld block size | "
195 "%ld files total | %ld files avail\n",
196 __func__,
197 (long)new_op->downcall.resp.statfs.blocks_avail,
198 (long)new_op->downcall.resp.statfs.blocks_total,
199 (long)new_op->downcall.resp.statfs.block_size,
200 (long)new_op->downcall.resp.statfs.files_total,
201 (long)new_op->downcall.resp.statfs.files_avail);
202
203 buf->f_type = sb->s_magic;
204 buf->f_fsid.val[0] = ORANGEFS_SB(sb)->fs_id;
205 buf->f_fsid.val[1] = ORANGEFS_SB(sb)->id;
206 buf->f_bsize = new_op->downcall.resp.statfs.block_size;
207 buf->f_namelen = ORANGEFS_NAME_MAX;
208
209 buf->f_blocks = (sector_t) new_op->downcall.resp.statfs.blocks_total;
210 buf->f_bfree = (sector_t) new_op->downcall.resp.statfs.blocks_avail;
211 buf->f_bavail = (sector_t) new_op->downcall.resp.statfs.blocks_avail;
212 buf->f_files = (sector_t) new_op->downcall.resp.statfs.files_total;
213 buf->f_ffree = (sector_t) new_op->downcall.resp.statfs.files_avail;
214 buf->f_frsize = 0;
215
216 out_op_release:
217 op_release(new_op);
218 gossip_debug(GOSSIP_SUPER_DEBUG, "%s: returning %d\n", __func__, ret);
219 return ret;
220 }
221
222 /*
223 * Remount as initiated by VFS layer. We just need to reparse the mount
224 * options, no need to signal pvfs2-client-core about it.
225 */
orangefs_remount_fs(struct super_block * sb,int * flags,char * data)226 static int orangefs_remount_fs(struct super_block *sb, int *flags, char *data)
227 {
228 gossip_debug(GOSSIP_SUPER_DEBUG, "orangefs_remount_fs: called\n");
229 return parse_mount_options(sb, data, 1);
230 }
231
232 /*
233 * Remount as initiated by pvfs2-client-core on restart. This is used to
234 * repopulate mount information left from previous pvfs2-client-core.
235 *
236 * the idea here is that given a valid superblock, we're
237 * re-initializing the user space client with the initial mount
238 * information specified when the super block was first initialized.
239 * this is very different than the first initialization/creation of a
240 * superblock. we use the special service_priority_operation to make
241 * sure that the mount gets ahead of any other pending operation that
242 * is waiting for servicing. this means that the pvfs2-client won't
243 * fail to start several times for all other pending operations before
244 * the client regains all of the mount information from us.
245 * NOTE: this function assumes that the request_mutex is already acquired!
246 */
orangefs_remount(struct orangefs_sb_info_s * orangefs_sb)247 int orangefs_remount(struct orangefs_sb_info_s *orangefs_sb)
248 {
249 struct orangefs_kernel_op_s *new_op;
250 int ret = -EINVAL;
251
252 gossip_debug(GOSSIP_SUPER_DEBUG, "orangefs_remount: called\n");
253
254 new_op = op_alloc(ORANGEFS_VFS_OP_FS_MOUNT);
255 if (!new_op)
256 return -ENOMEM;
257 strncpy(new_op->upcall.req.fs_mount.orangefs_config_server,
258 orangefs_sb->devname,
259 ORANGEFS_MAX_SERVER_ADDR_LEN);
260
261 gossip_debug(GOSSIP_SUPER_DEBUG,
262 "Attempting ORANGEFS Remount via host %s\n",
263 new_op->upcall.req.fs_mount.orangefs_config_server);
264
265 /*
266 * we assume that the calling function has already acquired the
267 * request_mutex to prevent other operations from bypassing
268 * this one
269 */
270 ret = service_operation(new_op, "orangefs_remount",
271 ORANGEFS_OP_PRIORITY | ORANGEFS_OP_NO_MUTEX);
272 gossip_debug(GOSSIP_SUPER_DEBUG,
273 "orangefs_remount: mount got return value of %d\n",
274 ret);
275 if (ret == 0) {
276 /*
277 * store the id assigned to this sb -- it's just a
278 * short-lived mapping that the system interface uses
279 * to map this superblock to a particular mount entry
280 */
281 orangefs_sb->id = new_op->downcall.resp.fs_mount.id;
282 orangefs_sb->mount_pending = 0;
283 }
284
285 op_release(new_op);
286
287 if (orangefs_userspace_version >= 20906) {
288 new_op = op_alloc(ORANGEFS_VFS_OP_FEATURES);
289 if (!new_op)
290 return -ENOMEM;
291 new_op->upcall.req.features.features = 0;
292 ret = service_operation(new_op, "orangefs_features",
293 ORANGEFS_OP_PRIORITY | ORANGEFS_OP_NO_MUTEX);
294 if (!ret)
295 orangefs_features =
296 new_op->downcall.resp.features.features;
297 else
298 orangefs_features = 0;
299 op_release(new_op);
300 } else {
301 orangefs_features = 0;
302 }
303
304 return ret;
305 }
306
fsid_key_table_initialize(void)307 int fsid_key_table_initialize(void)
308 {
309 return 0;
310 }
311
fsid_key_table_finalize(void)312 void fsid_key_table_finalize(void)
313 {
314 }
315
316 static const struct super_operations orangefs_s_ops = {
317 .alloc_inode = orangefs_alloc_inode,
318 .free_inode = orangefs_free_inode,
319 .destroy_inode = orangefs_destroy_inode,
320 .write_inode = orangefs_write_inode,
321 .drop_inode = generic_delete_inode,
322 .statfs = orangefs_statfs,
323 .remount_fs = orangefs_remount_fs,
324 .show_options = orangefs_show_options,
325 };
326
orangefs_fh_to_dentry(struct super_block * sb,struct fid * fid,int fh_len,int fh_type)327 static struct dentry *orangefs_fh_to_dentry(struct super_block *sb,
328 struct fid *fid,
329 int fh_len,
330 int fh_type)
331 {
332 struct orangefs_object_kref refn;
333
334 if (fh_len < 5 || fh_type > 2)
335 return NULL;
336
337 ORANGEFS_khandle_from(&(refn.khandle), fid->raw, 16);
338 refn.fs_id = (u32) fid->raw[4];
339 gossip_debug(GOSSIP_SUPER_DEBUG,
340 "fh_to_dentry: handle %pU, fs_id %d\n",
341 &refn.khandle,
342 refn.fs_id);
343
344 return d_obtain_alias(orangefs_iget(sb, &refn));
345 }
346
orangefs_encode_fh(struct inode * inode,__u32 * fh,int * max_len,struct inode * parent)347 static int orangefs_encode_fh(struct inode *inode,
348 __u32 *fh,
349 int *max_len,
350 struct inode *parent)
351 {
352 int len = parent ? 10 : 5;
353 int type = 1;
354 struct orangefs_object_kref refn;
355
356 if (*max_len < len) {
357 gossip_err("fh buffer is too small for encoding\n");
358 *max_len = len;
359 type = 255;
360 goto out;
361 }
362
363 refn = ORANGEFS_I(inode)->refn;
364 ORANGEFS_khandle_to(&refn.khandle, fh, 16);
365 fh[4] = refn.fs_id;
366
367 gossip_debug(GOSSIP_SUPER_DEBUG,
368 "Encoding fh: handle %pU, fsid %u\n",
369 &refn.khandle,
370 refn.fs_id);
371
372
373 if (parent) {
374 refn = ORANGEFS_I(parent)->refn;
375 ORANGEFS_khandle_to(&refn.khandle, (char *) fh + 20, 16);
376 fh[9] = refn.fs_id;
377
378 type = 2;
379 gossip_debug(GOSSIP_SUPER_DEBUG,
380 "Encoding parent: handle %pU, fsid %u\n",
381 &refn.khandle,
382 refn.fs_id);
383 }
384 *max_len = len;
385
386 out:
387 return type;
388 }
389
390 static const struct export_operations orangefs_export_ops = {
391 .encode_fh = orangefs_encode_fh,
392 .fh_to_dentry = orangefs_fh_to_dentry,
393 };
394
orangefs_unmount(int id,__s32 fs_id,const char * devname)395 static int orangefs_unmount(int id, __s32 fs_id, const char *devname)
396 {
397 struct orangefs_kernel_op_s *op;
398 int r;
399 op = op_alloc(ORANGEFS_VFS_OP_FS_UMOUNT);
400 if (!op)
401 return -ENOMEM;
402 op->upcall.req.fs_umount.id = id;
403 op->upcall.req.fs_umount.fs_id = fs_id;
404 strncpy(op->upcall.req.fs_umount.orangefs_config_server,
405 devname, ORANGEFS_MAX_SERVER_ADDR_LEN - 1);
406 r = service_operation(op, "orangefs_fs_umount", 0);
407 /* Not much to do about an error here. */
408 if (r)
409 gossip_err("orangefs_unmount: service_operation %d\n", r);
410 op_release(op);
411 return r;
412 }
413
orangefs_fill_sb(struct super_block * sb,struct orangefs_fs_mount_response * fs_mount,void * data,int silent)414 static int orangefs_fill_sb(struct super_block *sb,
415 struct orangefs_fs_mount_response *fs_mount,
416 void *data, int silent)
417 {
418 int ret;
419 struct inode *root;
420 struct dentry *root_dentry;
421 struct orangefs_object_kref root_object;
422
423 ORANGEFS_SB(sb)->sb = sb;
424
425 ORANGEFS_SB(sb)->root_khandle = fs_mount->root_khandle;
426 ORANGEFS_SB(sb)->fs_id = fs_mount->fs_id;
427 ORANGEFS_SB(sb)->id = fs_mount->id;
428
429 if (data) {
430 ret = parse_mount_options(sb, data, silent);
431 if (ret)
432 return ret;
433 }
434
435 /* Hang the xattr handlers off the superblock */
436 sb->s_xattr = orangefs_xattr_handlers;
437 sb->s_magic = ORANGEFS_SUPER_MAGIC;
438 sb->s_op = &orangefs_s_ops;
439 sb->s_d_op = &orangefs_dentry_operations;
440
441 sb->s_blocksize = PAGE_SIZE;
442 sb->s_blocksize_bits = PAGE_SHIFT;
443 sb->s_maxbytes = MAX_LFS_FILESIZE;
444
445 ret = super_setup_bdi(sb);
446 if (ret)
447 return ret;
448
449 root_object.khandle = ORANGEFS_SB(sb)->root_khandle;
450 root_object.fs_id = ORANGEFS_SB(sb)->fs_id;
451 gossip_debug(GOSSIP_SUPER_DEBUG,
452 "get inode %pU, fsid %d\n",
453 &root_object.khandle,
454 root_object.fs_id);
455
456 root = orangefs_iget(sb, &root_object);
457 if (IS_ERR(root))
458 return PTR_ERR(root);
459
460 gossip_debug(GOSSIP_SUPER_DEBUG,
461 "Allocated root inode [%p] with mode %x\n",
462 root,
463 root->i_mode);
464
465 /* allocates and places root dentry in dcache */
466 root_dentry = d_make_root(root);
467 if (!root_dentry)
468 return -ENOMEM;
469
470 sb->s_export_op = &orangefs_export_ops;
471 sb->s_root = root_dentry;
472 return 0;
473 }
474
orangefs_mount(struct file_system_type * fst,int flags,const char * devname,void * data)475 struct dentry *orangefs_mount(struct file_system_type *fst,
476 int flags,
477 const char *devname,
478 void *data)
479 {
480 int ret;
481 struct super_block *sb = ERR_PTR(-EINVAL);
482 struct orangefs_kernel_op_s *new_op;
483 struct dentry *d = ERR_PTR(-EINVAL);
484
485 gossip_debug(GOSSIP_SUPER_DEBUG,
486 "orangefs_mount: called with devname %s\n",
487 devname);
488
489 if (!devname) {
490 gossip_err("ERROR: device name not specified.\n");
491 return ERR_PTR(-EINVAL);
492 }
493
494 new_op = op_alloc(ORANGEFS_VFS_OP_FS_MOUNT);
495 if (!new_op)
496 return ERR_PTR(-ENOMEM);
497
498 strncpy(new_op->upcall.req.fs_mount.orangefs_config_server,
499 devname,
500 ORANGEFS_MAX_SERVER_ADDR_LEN - 1);
501
502 gossip_debug(GOSSIP_SUPER_DEBUG,
503 "Attempting ORANGEFS Mount via host %s\n",
504 new_op->upcall.req.fs_mount.orangefs_config_server);
505
506 ret = service_operation(new_op, "orangefs_mount", 0);
507 gossip_debug(GOSSIP_SUPER_DEBUG,
508 "orangefs_mount: mount got return value of %d\n", ret);
509 if (ret)
510 goto free_op;
511
512 if (new_op->downcall.resp.fs_mount.fs_id == ORANGEFS_FS_ID_NULL) {
513 gossip_err("ERROR: Retrieved null fs_id\n");
514 ret = -EINVAL;
515 goto free_op;
516 }
517
518 sb = sget(fst, NULL, set_anon_super, flags, NULL);
519
520 if (IS_ERR(sb)) {
521 d = ERR_CAST(sb);
522 orangefs_unmount(new_op->downcall.resp.fs_mount.id,
523 new_op->downcall.resp.fs_mount.fs_id, devname);
524 goto free_op;
525 }
526
527 /* alloc and init our private orangefs sb info */
528 sb->s_fs_info = kzalloc(sizeof(struct orangefs_sb_info_s), GFP_KERNEL);
529 if (!ORANGEFS_SB(sb)) {
530 d = ERR_PTR(-ENOMEM);
531 goto free_op;
532 }
533
534 ret = orangefs_fill_sb(sb,
535 &new_op->downcall.resp.fs_mount, data,
536 flags & SB_SILENT ? 1 : 0);
537
538 if (ret) {
539 d = ERR_PTR(ret);
540 goto free_sb_and_op;
541 }
542
543 /*
544 * on successful mount, store the devname and data
545 * used
546 */
547 strncpy(ORANGEFS_SB(sb)->devname,
548 devname,
549 ORANGEFS_MAX_SERVER_ADDR_LEN - 1);
550
551 /* mount_pending must be cleared */
552 ORANGEFS_SB(sb)->mount_pending = 0;
553
554 /*
555 * finally, add this sb to our list of known orangefs
556 * sb's
557 */
558 gossip_debug(GOSSIP_SUPER_DEBUG,
559 "Adding SB %p to orangefs superblocks\n",
560 ORANGEFS_SB(sb));
561 spin_lock(&orangefs_superblocks_lock);
562 list_add_tail(&ORANGEFS_SB(sb)->list, &orangefs_superblocks);
563 spin_unlock(&orangefs_superblocks_lock);
564 op_release(new_op);
565
566 /* Must be removed from the list now. */
567 ORANGEFS_SB(sb)->no_list = 0;
568
569 if (orangefs_userspace_version >= 20906) {
570 new_op = op_alloc(ORANGEFS_VFS_OP_FEATURES);
571 if (!new_op)
572 return ERR_PTR(-ENOMEM);
573 new_op->upcall.req.features.features = 0;
574 ret = service_operation(new_op, "orangefs_features", 0);
575 orangefs_features = new_op->downcall.resp.features.features;
576 op_release(new_op);
577 } else {
578 orangefs_features = 0;
579 }
580
581 return dget(sb->s_root);
582
583 free_sb_and_op:
584 /* Will call orangefs_kill_sb with sb not in list. */
585 ORANGEFS_SB(sb)->no_list = 1;
586 /* ORANGEFS_VFS_OP_FS_UMOUNT is done by orangefs_kill_sb. */
587 deactivate_locked_super(sb);
588 free_op:
589 gossip_err("orangefs_mount: mount request failed with %d\n", ret);
590 if (ret == -EINVAL) {
591 gossip_err("Ensure that all orangefs-servers have the same FS configuration files\n");
592 gossip_err("Look at pvfs2-client-core log file (typically /tmp/pvfs2-client.log) for more details\n");
593 }
594
595 op_release(new_op);
596
597 return d;
598 }
599
orangefs_kill_sb(struct super_block * sb)600 void orangefs_kill_sb(struct super_block *sb)
601 {
602 int r;
603 gossip_debug(GOSSIP_SUPER_DEBUG, "orangefs_kill_sb: called\n");
604
605 /* provided sb cleanup */
606 kill_anon_super(sb);
607
608 if (!ORANGEFS_SB(sb)) {
609 mutex_lock(&orangefs_request_mutex);
610 mutex_unlock(&orangefs_request_mutex);
611 return;
612 }
613 /*
614 * issue the unmount to userspace to tell it to remove the
615 * dynamic mount info it has for this superblock
616 */
617 r = orangefs_unmount(ORANGEFS_SB(sb)->id, ORANGEFS_SB(sb)->fs_id,
618 ORANGEFS_SB(sb)->devname);
619 if (!r)
620 ORANGEFS_SB(sb)->mount_pending = 1;
621
622 if (!ORANGEFS_SB(sb)->no_list) {
623 /* remove the sb from our list of orangefs specific sb's */
624 spin_lock(&orangefs_superblocks_lock);
625 /* not list_del_init */
626 __list_del_entry(&ORANGEFS_SB(sb)->list);
627 ORANGEFS_SB(sb)->list.prev = NULL;
628 spin_unlock(&orangefs_superblocks_lock);
629 }
630
631 /*
632 * make sure that ORANGEFS_DEV_REMOUNT_ALL loop that might've seen us
633 * gets completed before we free the dang thing.
634 */
635 mutex_lock(&orangefs_request_mutex);
636 mutex_unlock(&orangefs_request_mutex);
637
638 /* free the orangefs superblock private data */
639 kfree(ORANGEFS_SB(sb));
640 }
641
orangefs_inode_cache_initialize(void)642 int orangefs_inode_cache_initialize(void)
643 {
644 orangefs_inode_cache = kmem_cache_create_usercopy(
645 "orangefs_inode_cache",
646 sizeof(struct orangefs_inode_s),
647 0,
648 ORANGEFS_CACHE_CREATE_FLAGS,
649 offsetof(struct orangefs_inode_s,
650 link_target),
651 sizeof_field(struct orangefs_inode_s,
652 link_target),
653 orangefs_inode_cache_ctor);
654
655 if (!orangefs_inode_cache) {
656 gossip_err("Cannot create orangefs_inode_cache\n");
657 return -ENOMEM;
658 }
659 return 0;
660 }
661
orangefs_inode_cache_finalize(void)662 int orangefs_inode_cache_finalize(void)
663 {
664 kmem_cache_destroy(orangefs_inode_cache);
665 return 0;
666 }
667