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 memcpy(&buf->f_fsid, &ORANGEFS_SB(sb)->fs_id, sizeof(buf->f_fsid));
205 buf->f_bsize = new_op->downcall.resp.statfs.block_size;
206 buf->f_namelen = ORANGEFS_NAME_MAX;
207
208 buf->f_blocks = (sector_t) new_op->downcall.resp.statfs.blocks_total;
209 buf->f_bfree = (sector_t) new_op->downcall.resp.statfs.blocks_avail;
210 buf->f_bavail = (sector_t) new_op->downcall.resp.statfs.blocks_avail;
211 buf->f_files = (sector_t) new_op->downcall.resp.statfs.files_total;
212 buf->f_ffree = (sector_t) new_op->downcall.resp.statfs.files_avail;
213 buf->f_frsize = 0;
214
215 out_op_release:
216 op_release(new_op);
217 gossip_debug(GOSSIP_SUPER_DEBUG, "%s: returning %d\n", __func__, ret);
218 return ret;
219 }
220
221 /*
222 * Remount as initiated by VFS layer. We just need to reparse the mount
223 * options, no need to signal pvfs2-client-core about it.
224 */
orangefs_remount_fs(struct super_block * sb,int * flags,char * data)225 static int orangefs_remount_fs(struct super_block *sb, int *flags, char *data)
226 {
227 gossip_debug(GOSSIP_SUPER_DEBUG, "orangefs_remount_fs: called\n");
228 return parse_mount_options(sb, data, 1);
229 }
230
231 /*
232 * Remount as initiated by pvfs2-client-core on restart. This is used to
233 * repopulate mount information left from previous pvfs2-client-core.
234 *
235 * the idea here is that given a valid superblock, we're
236 * re-initializing the user space client with the initial mount
237 * information specified when the super block was first initialized.
238 * this is very different than the first initialization/creation of a
239 * superblock. we use the special service_priority_operation to make
240 * sure that the mount gets ahead of any other pending operation that
241 * is waiting for servicing. this means that the pvfs2-client won't
242 * fail to start several times for all other pending operations before
243 * the client regains all of the mount information from us.
244 * NOTE: this function assumes that the request_mutex is already acquired!
245 */
orangefs_remount(struct orangefs_sb_info_s * orangefs_sb)246 int orangefs_remount(struct orangefs_sb_info_s *orangefs_sb)
247 {
248 struct orangefs_kernel_op_s *new_op;
249 int ret = -EINVAL;
250
251 gossip_debug(GOSSIP_SUPER_DEBUG, "orangefs_remount: called\n");
252
253 new_op = op_alloc(ORANGEFS_VFS_OP_FS_MOUNT);
254 if (!new_op)
255 return -ENOMEM;
256 strncpy(new_op->upcall.req.fs_mount.orangefs_config_server,
257 orangefs_sb->devname,
258 ORANGEFS_MAX_SERVER_ADDR_LEN);
259
260 gossip_debug(GOSSIP_SUPER_DEBUG,
261 "Attempting ORANGEFS Remount via host %s\n",
262 new_op->upcall.req.fs_mount.orangefs_config_server);
263
264 /*
265 * we assume that the calling function has already acquired the
266 * request_mutex to prevent other operations from bypassing
267 * this one
268 */
269 ret = service_operation(new_op, "orangefs_remount",
270 ORANGEFS_OP_PRIORITY | ORANGEFS_OP_NO_MUTEX);
271 gossip_debug(GOSSIP_SUPER_DEBUG,
272 "orangefs_remount: mount got return value of %d\n",
273 ret);
274 if (ret == 0) {
275 /*
276 * store the id assigned to this sb -- it's just a
277 * short-lived mapping that the system interface uses
278 * to map this superblock to a particular mount entry
279 */
280 orangefs_sb->id = new_op->downcall.resp.fs_mount.id;
281 orangefs_sb->mount_pending = 0;
282 }
283
284 op_release(new_op);
285
286 if (orangefs_userspace_version >= 20906) {
287 new_op = op_alloc(ORANGEFS_VFS_OP_FEATURES);
288 if (!new_op)
289 return -ENOMEM;
290 new_op->upcall.req.features.features = 0;
291 ret = service_operation(new_op, "orangefs_features",
292 ORANGEFS_OP_PRIORITY | ORANGEFS_OP_NO_MUTEX);
293 if (!ret)
294 orangefs_features =
295 new_op->downcall.resp.features.features;
296 else
297 orangefs_features = 0;
298 op_release(new_op);
299 } else {
300 orangefs_features = 0;
301 }
302
303 return ret;
304 }
305
fsid_key_table_initialize(void)306 int fsid_key_table_initialize(void)
307 {
308 return 0;
309 }
310
fsid_key_table_finalize(void)311 void fsid_key_table_finalize(void)
312 {
313 }
314
315 static const struct super_operations orangefs_s_ops = {
316 .alloc_inode = orangefs_alloc_inode,
317 .free_inode = orangefs_free_inode,
318 .destroy_inode = orangefs_destroy_inode,
319 .write_inode = orangefs_write_inode,
320 .drop_inode = generic_delete_inode,
321 .statfs = orangefs_statfs,
322 .remount_fs = orangefs_remount_fs,
323 .show_options = orangefs_show_options,
324 };
325
orangefs_fh_to_dentry(struct super_block * sb,struct fid * fid,int fh_len,int fh_type)326 static struct dentry *orangefs_fh_to_dentry(struct super_block *sb,
327 struct fid *fid,
328 int fh_len,
329 int fh_type)
330 {
331 struct orangefs_object_kref refn;
332
333 if (fh_len < 5 || fh_type > 2)
334 return NULL;
335
336 ORANGEFS_khandle_from(&(refn.khandle), fid->raw, 16);
337 refn.fs_id = (u32) fid->raw[4];
338 gossip_debug(GOSSIP_SUPER_DEBUG,
339 "fh_to_dentry: handle %pU, fs_id %d\n",
340 &refn.khandle,
341 refn.fs_id);
342
343 return d_obtain_alias(orangefs_iget(sb, &refn));
344 }
345
orangefs_encode_fh(struct inode * inode,__u32 * fh,int * max_len,struct inode * parent)346 static int orangefs_encode_fh(struct inode *inode,
347 __u32 *fh,
348 int *max_len,
349 struct inode *parent)
350 {
351 int len = parent ? 10 : 5;
352 int type = 1;
353 struct orangefs_object_kref refn;
354
355 if (*max_len < len) {
356 gossip_err("fh buffer is too small for encoding\n");
357 *max_len = len;
358 type = 255;
359 goto out;
360 }
361
362 refn = ORANGEFS_I(inode)->refn;
363 ORANGEFS_khandle_to(&refn.khandle, fh, 16);
364 fh[4] = refn.fs_id;
365
366 gossip_debug(GOSSIP_SUPER_DEBUG,
367 "Encoding fh: handle %pU, fsid %u\n",
368 &refn.khandle,
369 refn.fs_id);
370
371
372 if (parent) {
373 refn = ORANGEFS_I(parent)->refn;
374 ORANGEFS_khandle_to(&refn.khandle, (char *) fh + 20, 16);
375 fh[9] = refn.fs_id;
376
377 type = 2;
378 gossip_debug(GOSSIP_SUPER_DEBUG,
379 "Encoding parent: handle %pU, fsid %u\n",
380 &refn.khandle,
381 refn.fs_id);
382 }
383 *max_len = len;
384
385 out:
386 return type;
387 }
388
389 static const struct export_operations orangefs_export_ops = {
390 .encode_fh = orangefs_encode_fh,
391 .fh_to_dentry = orangefs_fh_to_dentry,
392 };
393
orangefs_unmount(int id,__s32 fs_id,const char * devname)394 static int orangefs_unmount(int id, __s32 fs_id, const char *devname)
395 {
396 struct orangefs_kernel_op_s *op;
397 int r;
398 op = op_alloc(ORANGEFS_VFS_OP_FS_UMOUNT);
399 if (!op)
400 return -ENOMEM;
401 op->upcall.req.fs_umount.id = id;
402 op->upcall.req.fs_umount.fs_id = fs_id;
403 strncpy(op->upcall.req.fs_umount.orangefs_config_server,
404 devname, ORANGEFS_MAX_SERVER_ADDR_LEN - 1);
405 r = service_operation(op, "orangefs_fs_umount", 0);
406 /* Not much to do about an error here. */
407 if (r)
408 gossip_err("orangefs_unmount: service_operation %d\n", r);
409 op_release(op);
410 return r;
411 }
412
orangefs_fill_sb(struct super_block * sb,struct orangefs_fs_mount_response * fs_mount,void * data,int silent)413 static int orangefs_fill_sb(struct super_block *sb,
414 struct orangefs_fs_mount_response *fs_mount,
415 void *data, int silent)
416 {
417 int ret;
418 struct inode *root;
419 struct dentry *root_dentry;
420 struct orangefs_object_kref root_object;
421
422 ORANGEFS_SB(sb)->sb = sb;
423
424 ORANGEFS_SB(sb)->root_khandle = fs_mount->root_khandle;
425 ORANGEFS_SB(sb)->fs_id = fs_mount->fs_id;
426 ORANGEFS_SB(sb)->id = fs_mount->id;
427
428 if (data) {
429 ret = parse_mount_options(sb, data, silent);
430 if (ret)
431 return ret;
432 }
433
434 /* Hang the xattr handlers off the superblock */
435 sb->s_xattr = orangefs_xattr_handlers;
436 sb->s_magic = ORANGEFS_SUPER_MAGIC;
437 sb->s_op = &orangefs_s_ops;
438 sb->s_d_op = &orangefs_dentry_operations;
439
440 sb->s_blocksize = PAGE_SIZE;
441 sb->s_blocksize_bits = PAGE_SHIFT;
442 sb->s_maxbytes = MAX_LFS_FILESIZE;
443
444 ret = super_setup_bdi(sb);
445 if (ret)
446 return ret;
447
448 root_object.khandle = ORANGEFS_SB(sb)->root_khandle;
449 root_object.fs_id = ORANGEFS_SB(sb)->fs_id;
450 gossip_debug(GOSSIP_SUPER_DEBUG,
451 "get inode %pU, fsid %d\n",
452 &root_object.khandle,
453 root_object.fs_id);
454
455 root = orangefs_iget(sb, &root_object);
456 if (IS_ERR(root))
457 return PTR_ERR(root);
458
459 gossip_debug(GOSSIP_SUPER_DEBUG,
460 "Allocated root inode [%p] with mode %x\n",
461 root,
462 root->i_mode);
463
464 /* allocates and places root dentry in dcache */
465 root_dentry = d_make_root(root);
466 if (!root_dentry)
467 return -ENOMEM;
468
469 sb->s_export_op = &orangefs_export_ops;
470 sb->s_root = root_dentry;
471 return 0;
472 }
473
orangefs_mount(struct file_system_type * fst,int flags,const char * devname,void * data)474 struct dentry *orangefs_mount(struct file_system_type *fst,
475 int flags,
476 const char *devname,
477 void *data)
478 {
479 int ret;
480 struct super_block *sb = ERR_PTR(-EINVAL);
481 struct orangefs_kernel_op_s *new_op;
482 struct dentry *d = ERR_PTR(-EINVAL);
483
484 gossip_debug(GOSSIP_SUPER_DEBUG,
485 "orangefs_mount: called with devname %s\n",
486 devname);
487
488 if (!devname) {
489 gossip_err("ERROR: device name not specified.\n");
490 return ERR_PTR(-EINVAL);
491 }
492
493 new_op = op_alloc(ORANGEFS_VFS_OP_FS_MOUNT);
494 if (!new_op)
495 return ERR_PTR(-ENOMEM);
496
497 strncpy(new_op->upcall.req.fs_mount.orangefs_config_server,
498 devname,
499 ORANGEFS_MAX_SERVER_ADDR_LEN - 1);
500
501 gossip_debug(GOSSIP_SUPER_DEBUG,
502 "Attempting ORANGEFS Mount via host %s\n",
503 new_op->upcall.req.fs_mount.orangefs_config_server);
504
505 ret = service_operation(new_op, "orangefs_mount", 0);
506 gossip_debug(GOSSIP_SUPER_DEBUG,
507 "orangefs_mount: mount got return value of %d\n", ret);
508 if (ret)
509 goto free_op;
510
511 if (new_op->downcall.resp.fs_mount.fs_id == ORANGEFS_FS_ID_NULL) {
512 gossip_err("ERROR: Retrieved null fs_id\n");
513 ret = -EINVAL;
514 goto free_op;
515 }
516
517 sb = sget(fst, NULL, set_anon_super, flags, NULL);
518
519 if (IS_ERR(sb)) {
520 d = ERR_CAST(sb);
521 orangefs_unmount(new_op->downcall.resp.fs_mount.id,
522 new_op->downcall.resp.fs_mount.fs_id, devname);
523 goto free_op;
524 }
525
526 /* alloc and init our private orangefs sb info */
527 sb->s_fs_info = kzalloc(sizeof(struct orangefs_sb_info_s), GFP_KERNEL);
528 if (!ORANGEFS_SB(sb)) {
529 d = ERR_PTR(-ENOMEM);
530 goto free_op;
531 }
532
533 ret = orangefs_fill_sb(sb,
534 &new_op->downcall.resp.fs_mount, data,
535 flags & SB_SILENT ? 1 : 0);
536
537 if (ret) {
538 d = ERR_PTR(ret);
539 goto free_sb_and_op;
540 }
541
542 /*
543 * on successful mount, store the devname and data
544 * used
545 */
546 strncpy(ORANGEFS_SB(sb)->devname,
547 devname,
548 ORANGEFS_MAX_SERVER_ADDR_LEN - 1);
549
550 /* mount_pending must be cleared */
551 ORANGEFS_SB(sb)->mount_pending = 0;
552
553 /*
554 * finally, add this sb to our list of known orangefs
555 * sb's
556 */
557 gossip_debug(GOSSIP_SUPER_DEBUG,
558 "Adding SB %p to orangefs superblocks\n",
559 ORANGEFS_SB(sb));
560 spin_lock(&orangefs_superblocks_lock);
561 list_add_tail(&ORANGEFS_SB(sb)->list, &orangefs_superblocks);
562 spin_unlock(&orangefs_superblocks_lock);
563 op_release(new_op);
564
565 /* Must be removed from the list now. */
566 ORANGEFS_SB(sb)->no_list = 0;
567
568 if (orangefs_userspace_version >= 20906) {
569 new_op = op_alloc(ORANGEFS_VFS_OP_FEATURES);
570 if (!new_op)
571 return ERR_PTR(-ENOMEM);
572 new_op->upcall.req.features.features = 0;
573 ret = service_operation(new_op, "orangefs_features", 0);
574 orangefs_features = new_op->downcall.resp.features.features;
575 op_release(new_op);
576 } else {
577 orangefs_features = 0;
578 }
579
580 return dget(sb->s_root);
581
582 free_sb_and_op:
583 /* Will call orangefs_kill_sb with sb not in list. */
584 ORANGEFS_SB(sb)->no_list = 1;
585 /* ORANGEFS_VFS_OP_FS_UMOUNT is done by orangefs_kill_sb. */
586 deactivate_locked_super(sb);
587 free_op:
588 gossip_err("orangefs_mount: mount request failed with %d\n", ret);
589 if (ret == -EINVAL) {
590 gossip_err("Ensure that all orangefs-servers have the same FS configuration files\n");
591 gossip_err("Look at pvfs2-client-core log file (typically /tmp/pvfs2-client.log) for more details\n");
592 }
593
594 op_release(new_op);
595
596 return d;
597 }
598
orangefs_kill_sb(struct super_block * sb)599 void orangefs_kill_sb(struct super_block *sb)
600 {
601 int r;
602 gossip_debug(GOSSIP_SUPER_DEBUG, "orangefs_kill_sb: called\n");
603
604 /* provided sb cleanup */
605 kill_anon_super(sb);
606
607 if (!ORANGEFS_SB(sb)) {
608 mutex_lock(&orangefs_request_mutex);
609 mutex_unlock(&orangefs_request_mutex);
610 return;
611 }
612 /*
613 * issue the unmount to userspace to tell it to remove the
614 * dynamic mount info it has for this superblock
615 */
616 r = orangefs_unmount(ORANGEFS_SB(sb)->id, ORANGEFS_SB(sb)->fs_id,
617 ORANGEFS_SB(sb)->devname);
618 if (!r)
619 ORANGEFS_SB(sb)->mount_pending = 1;
620
621 if (!ORANGEFS_SB(sb)->no_list) {
622 /* remove the sb from our list of orangefs specific sb's */
623 spin_lock(&orangefs_superblocks_lock);
624 /* not list_del_init */
625 __list_del_entry(&ORANGEFS_SB(sb)->list);
626 ORANGEFS_SB(sb)->list.prev = NULL;
627 spin_unlock(&orangefs_superblocks_lock);
628 }
629
630 /*
631 * make sure that ORANGEFS_DEV_REMOUNT_ALL loop that might've seen us
632 * gets completed before we free the dang thing.
633 */
634 mutex_lock(&orangefs_request_mutex);
635 mutex_unlock(&orangefs_request_mutex);
636
637 /* free the orangefs superblock private data */
638 kfree(ORANGEFS_SB(sb));
639 }
640
orangefs_inode_cache_initialize(void)641 int orangefs_inode_cache_initialize(void)
642 {
643 orangefs_inode_cache = kmem_cache_create_usercopy(
644 "orangefs_inode_cache",
645 sizeof(struct orangefs_inode_s),
646 0,
647 ORANGEFS_CACHE_CREATE_FLAGS,
648 offsetof(struct orangefs_inode_s,
649 link_target),
650 sizeof_field(struct orangefs_inode_s,
651 link_target),
652 orangefs_inode_cache_ctor);
653
654 if (!orangefs_inode_cache) {
655 gossip_err("Cannot create orangefs_inode_cache\n");
656 return -ENOMEM;
657 }
658 return 0;
659 }
660
orangefs_inode_cache_finalize(void)661 int orangefs_inode_cache_finalize(void)
662 {
663 kmem_cache_destroy(orangefs_inode_cache);
664 return 0;
665 }
666