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/hashtable.h>
13 #include <linux/seq_file.h>
14
15 /* a cache for orangefs-inode objects (i.e. orangefs inode private data) */
16 static struct kmem_cache *orangefs_inode_cache;
17
18 /* list for storing orangefs specific superblocks in use */
19 LIST_HEAD(orangefs_superblocks);
20
21 DEFINE_SPINLOCK(orangefs_superblocks_lock);
22
23 enum {
24 Opt_acl,
25 Opt_intr,
26 Opt_local_lock,
27 };
28
29 const struct fs_parameter_spec orangefs_fs_param_spec[] = {
30 fsparam_flag ("acl", Opt_acl),
31 fsparam_flag ("intr", Opt_intr),
32 fsparam_flag ("local_lock", Opt_local_lock),
33 {}
34 };
35
36 uint64_t orangefs_features;
37
orangefs_show_options(struct seq_file * m,struct dentry * root)38 static int orangefs_show_options(struct seq_file *m, struct dentry *root)
39 {
40 struct orangefs_sb_info_s *orangefs_sb = ORANGEFS_SB(root->d_sb);
41
42 if (root->d_sb->s_flags & SB_POSIXACL)
43 seq_puts(m, ",acl");
44 if (orangefs_sb->flags & ORANGEFS_OPT_INTR)
45 seq_puts(m, ",intr");
46 if (orangefs_sb->flags & ORANGEFS_OPT_LOCAL_LOCK)
47 seq_puts(m, ",local_lock");
48 return 0;
49 }
50
orangefs_parse_param(struct fs_context * fc,struct fs_parameter * param)51 static int orangefs_parse_param(struct fs_context *fc,
52 struct fs_parameter *param)
53 {
54 struct orangefs_sb_info_s *orangefs_sb = fc->s_fs_info;
55 struct fs_parse_result result;
56 int opt;
57
58 opt = fs_parse(fc, orangefs_fs_param_spec, param, &result);
59 if (opt < 0)
60 return opt;
61
62 switch (opt) {
63 case Opt_acl:
64 fc->sb_flags |= SB_POSIXACL;
65 break;
66 case Opt_intr:
67 orangefs_sb->flags |= ORANGEFS_OPT_INTR;
68 break;
69 case Opt_local_lock:
70 orangefs_sb->flags |= ORANGEFS_OPT_LOCAL_LOCK;
71 break;
72 }
73
74 return 0;
75 }
76
orangefs_inode_cache_ctor(void * req)77 static void orangefs_inode_cache_ctor(void *req)
78 {
79 struct orangefs_inode_s *orangefs_inode = req;
80
81 inode_init_once(&orangefs_inode->vfs_inode);
82 init_rwsem(&orangefs_inode->xattr_sem);
83 }
84
orangefs_alloc_inode(struct super_block * sb)85 static struct inode *orangefs_alloc_inode(struct super_block *sb)
86 {
87 struct orangefs_inode_s *orangefs_inode;
88
89 orangefs_inode = alloc_inode_sb(sb, orangefs_inode_cache, GFP_KERNEL);
90 if (!orangefs_inode)
91 return NULL;
92
93 /*
94 * We want to clear everything except for rw_semaphore and the
95 * vfs_inode.
96 */
97 memset(&orangefs_inode->refn.khandle, 0, 16);
98 orangefs_inode->refn.fs_id = ORANGEFS_FS_ID_NULL;
99 orangefs_inode->last_failed_block_index_read = 0;
100 memset(orangefs_inode->link_target, 0, sizeof(orangefs_inode->link_target));
101
102 gossip_debug(GOSSIP_SUPER_DEBUG,
103 "orangefs_alloc_inode: allocated %p\n",
104 &orangefs_inode->vfs_inode);
105 return &orangefs_inode->vfs_inode;
106 }
107
orangefs_free_inode(struct inode * inode)108 static void orangefs_free_inode(struct inode *inode)
109 {
110 struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
111 struct orangefs_cached_xattr *cx;
112 struct hlist_node *tmp;
113 int i;
114
115 hash_for_each_safe(orangefs_inode->xattr_cache, i, tmp, cx, node) {
116 hlist_del(&cx->node);
117 kfree(cx);
118 }
119
120 kmem_cache_free(orangefs_inode_cache, orangefs_inode);
121 }
122
orangefs_destroy_inode(struct inode * inode)123 static void orangefs_destroy_inode(struct inode *inode)
124 {
125 struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
126
127 gossip_debug(GOSSIP_SUPER_DEBUG,
128 "%s: deallocated %p destroying inode %pU\n",
129 __func__, orangefs_inode, get_khandle_from_ino(inode));
130 }
131
orangefs_write_inode(struct inode * inode,struct writeback_control * wbc)132 static int orangefs_write_inode(struct inode *inode,
133 struct writeback_control *wbc)
134 {
135 gossip_debug(GOSSIP_SUPER_DEBUG, "orangefs_write_inode\n");
136 return orangefs_inode_setattr(inode);
137 }
138
139 /*
140 * NOTE: information filled in here is typically reflected in the
141 * output of the system command 'df'
142 */
orangefs_statfs(struct dentry * dentry,struct kstatfs * buf)143 static int orangefs_statfs(struct dentry *dentry, struct kstatfs *buf)
144 {
145 int ret = -ENOMEM;
146 struct orangefs_kernel_op_s *new_op = NULL;
147 int flags = 0;
148 struct super_block *sb = NULL;
149
150 sb = dentry->d_sb;
151
152 gossip_debug(GOSSIP_SUPER_DEBUG,
153 "%s: called on sb %p (fs_id is %d)\n",
154 __func__,
155 sb,
156 (int)(ORANGEFS_SB(sb)->fs_id));
157
158 new_op = op_alloc(ORANGEFS_VFS_OP_STATFS);
159 if (!new_op)
160 return ret;
161 new_op->upcall.req.statfs.fs_id = ORANGEFS_SB(sb)->fs_id;
162
163 if (ORANGEFS_SB(sb)->flags & ORANGEFS_OPT_INTR)
164 flags = ORANGEFS_OP_INTERRUPTIBLE;
165
166 ret = service_operation(new_op, "orangefs_statfs", flags);
167
168 if (new_op->downcall.status < 0)
169 goto out_op_release;
170
171 gossip_debug(GOSSIP_SUPER_DEBUG,
172 "%s: got %ld blocks available | "
173 "%ld blocks total | %ld block size | "
174 "%ld files total | %ld files avail\n",
175 __func__,
176 (long)new_op->downcall.resp.statfs.blocks_avail,
177 (long)new_op->downcall.resp.statfs.blocks_total,
178 (long)new_op->downcall.resp.statfs.block_size,
179 (long)new_op->downcall.resp.statfs.files_total,
180 (long)new_op->downcall.resp.statfs.files_avail);
181
182 buf->f_type = sb->s_magic;
183 buf->f_fsid.val[0] = ORANGEFS_SB(sb)->fs_id;
184 buf->f_fsid.val[1] = ORANGEFS_SB(sb)->id;
185 buf->f_bsize = new_op->downcall.resp.statfs.block_size;
186 buf->f_namelen = ORANGEFS_NAME_MAX;
187
188 buf->f_blocks = (sector_t) new_op->downcall.resp.statfs.blocks_total;
189 buf->f_bfree = (sector_t) new_op->downcall.resp.statfs.blocks_avail;
190 buf->f_bavail = (sector_t) new_op->downcall.resp.statfs.blocks_avail;
191 buf->f_files = (sector_t) new_op->downcall.resp.statfs.files_total;
192 buf->f_ffree = (sector_t) new_op->downcall.resp.statfs.files_avail;
193 buf->f_frsize = 0;
194
195 out_op_release:
196 op_release(new_op);
197 gossip_debug(GOSSIP_SUPER_DEBUG, "%s: returning %d\n", __func__, ret);
198 return ret;
199 }
200
201 /*
202 * Remount as initiated by VFS layer. We just need to reparse the mount
203 * options, no need to signal pvfs2-client-core about it.
204 */
orangefs_reconfigure(struct fs_context * fc)205 static int orangefs_reconfigure(struct fs_context *fc)
206 {
207 struct super_block *sb = fc->root->d_sb;
208 struct orangefs_sb_info_s *orangefs_sb = ORANGEFS_SB(sb);
209 struct orangefs_sb_info_s *revised = fc->s_fs_info;
210 unsigned int flags;
211
212 flags = orangefs_sb->flags;
213 flags &= ~(ORANGEFS_OPT_INTR | ORANGEFS_OPT_LOCAL_LOCK);
214 flags |= revised->flags;
215 WRITE_ONCE(orangefs_sb->flags, flags);
216
217 gossip_debug(GOSSIP_SUPER_DEBUG, "orangefs_reconfigure: called\n");
218 return 0;
219 }
220
221 /*
222 * Remount as initiated by pvfs2-client-core on restart. This is used to
223 * repopulate mount information left from previous pvfs2-client-core.
224 *
225 * the idea here is that given a valid superblock, we're
226 * re-initializing the user space client with the initial mount
227 * information specified when the super block was first initialized.
228 * this is very different than the first initialization/creation of a
229 * superblock. we use the special service_priority_operation to make
230 * sure that the mount gets ahead of any other pending operation that
231 * is waiting for servicing. this means that the pvfs2-client won't
232 * fail to start several times for all other pending operations before
233 * the client regains all of the mount information from us.
234 * NOTE: this function assumes that the request_mutex is already acquired!
235 */
orangefs_remount(struct orangefs_sb_info_s * orangefs_sb)236 int orangefs_remount(struct orangefs_sb_info_s *orangefs_sb)
237 {
238 struct orangefs_kernel_op_s *new_op;
239 int ret = -EINVAL;
240
241 gossip_debug(GOSSIP_SUPER_DEBUG, "orangefs_remount: called\n");
242
243 new_op = op_alloc(ORANGEFS_VFS_OP_FS_MOUNT);
244 if (!new_op)
245 return -ENOMEM;
246 strscpy(new_op->upcall.req.fs_mount.orangefs_config_server,
247 orangefs_sb->devname);
248
249 gossip_debug(GOSSIP_SUPER_DEBUG,
250 "Attempting ORANGEFS Remount via host %s\n",
251 new_op->upcall.req.fs_mount.orangefs_config_server);
252
253 /*
254 * we assume that the calling function has already acquired the
255 * request_mutex to prevent other operations from bypassing
256 * this one
257 */
258 ret = service_operation(new_op, "orangefs_remount",
259 ORANGEFS_OP_PRIORITY | ORANGEFS_OP_NO_MUTEX);
260 gossip_debug(GOSSIP_SUPER_DEBUG,
261 "orangefs_remount: mount got return value of %d\n",
262 ret);
263 if (ret == 0) {
264 /*
265 * store the id assigned to this sb -- it's just a
266 * short-lived mapping that the system interface uses
267 * to map this superblock to a particular mount entry
268 */
269 orangefs_sb->id = new_op->downcall.resp.fs_mount.id;
270 orangefs_sb->mount_pending = 0;
271 }
272
273 op_release(new_op);
274
275 if (orangefs_userspace_version >= 20906) {
276 new_op = op_alloc(ORANGEFS_VFS_OP_FEATURES);
277 if (!new_op)
278 return -ENOMEM;
279 new_op->upcall.req.features.features = 0;
280 ret = service_operation(new_op, "orangefs_features",
281 ORANGEFS_OP_PRIORITY | ORANGEFS_OP_NO_MUTEX);
282 if (!ret)
283 orangefs_features =
284 new_op->downcall.resp.features.features;
285 else
286 orangefs_features = 0;
287 op_release(new_op);
288 } else {
289 orangefs_features = 0;
290 }
291
292 return ret;
293 }
294
fsid_key_table_initialize(void)295 int fsid_key_table_initialize(void)
296 {
297 return 0;
298 }
299
fsid_key_table_finalize(void)300 void fsid_key_table_finalize(void)
301 {
302 }
303
304 static const struct super_operations orangefs_s_ops = {
305 .alloc_inode = orangefs_alloc_inode,
306 .free_inode = orangefs_free_inode,
307 .destroy_inode = orangefs_destroy_inode,
308 .write_inode = orangefs_write_inode,
309 .drop_inode = inode_just_drop,
310 .statfs = orangefs_statfs,
311 .show_options = orangefs_show_options,
312 };
313
orangefs_fh_to_dentry(struct super_block * sb,struct fid * fid,int fh_len,int fh_type)314 static struct dentry *orangefs_fh_to_dentry(struct super_block *sb,
315 struct fid *fid,
316 int fh_len,
317 int fh_type)
318 {
319 struct orangefs_object_kref refn;
320
321 if (fh_len < 5 || fh_type > 2)
322 return NULL;
323
324 ORANGEFS_khandle_from(&(refn.khandle), fid->raw, 16);
325 refn.fs_id = (u32) fid->raw[4];
326 gossip_debug(GOSSIP_SUPER_DEBUG,
327 "fh_to_dentry: handle %pU, fs_id %d\n",
328 &refn.khandle,
329 refn.fs_id);
330
331 return d_obtain_alias(orangefs_iget(sb, &refn));
332 }
333
orangefs_encode_fh(struct inode * inode,__u32 * fh,int * max_len,struct inode * parent)334 static int orangefs_encode_fh(struct inode *inode,
335 __u32 *fh,
336 int *max_len,
337 struct inode *parent)
338 {
339 int len = parent ? 10 : 5;
340 int type = 1;
341 struct orangefs_object_kref refn;
342
343 if (*max_len < len) {
344 gossip_err("fh buffer is too small for encoding\n");
345 *max_len = len;
346 type = 255;
347 goto out;
348 }
349
350 refn = ORANGEFS_I(inode)->refn;
351 ORANGEFS_khandle_to(&refn.khandle, fh, 16);
352 fh[4] = refn.fs_id;
353
354 gossip_debug(GOSSIP_SUPER_DEBUG,
355 "Encoding fh: handle %pU, fsid %u\n",
356 &refn.khandle,
357 refn.fs_id);
358
359
360 if (parent) {
361 refn = ORANGEFS_I(parent)->refn;
362 ORANGEFS_khandle_to(&refn.khandle, (char *) fh + 20, 16);
363 fh[9] = refn.fs_id;
364
365 type = 2;
366 gossip_debug(GOSSIP_SUPER_DEBUG,
367 "Encoding parent: handle %pU, fsid %u\n",
368 &refn.khandle,
369 refn.fs_id);
370 }
371 *max_len = len;
372
373 out:
374 return type;
375 }
376
377 static const struct export_operations orangefs_export_ops = {
378 .encode_fh = orangefs_encode_fh,
379 .fh_to_dentry = orangefs_fh_to_dentry,
380 };
381
orangefs_unmount(int id,__s32 fs_id,const char * devname)382 static int orangefs_unmount(int id, __s32 fs_id, const char *devname)
383 {
384 struct orangefs_kernel_op_s *op;
385 int r;
386
387 /*
388 * If someone reboots linux without unmounting orangefs first,
389 * don't bother firing off an unmount service operation that
390 * will never complete, or the whole system shutdown
391 * stalls for ORANGEFS_DEFAULT_OP_TIMEOUT_SECS.
392 */
393
394 if (!__is_daemon_in_service() ||
395 system_state == SYSTEM_HALT ||
396 system_state == SYSTEM_POWER_OFF ||
397 system_state == SYSTEM_RESTART) {
398 gossip_debug(GOSSIP_SUPER_DEBUG,
399 "%s: dirty unmount.\n",
400 __func__);
401 return 0;
402 }
403
404 op = op_alloc(ORANGEFS_VFS_OP_FS_UMOUNT);
405 if (!op)
406 return -ENOMEM;
407 op->upcall.req.fs_umount.id = id;
408 op->upcall.req.fs_umount.fs_id = fs_id;
409 strscpy(op->upcall.req.fs_umount.orangefs_config_server, devname);
410 r = service_operation(op, "orangefs_fs_umount", 0);
411 /* Not much to do about an error here. */
412 if (r)
413 gossip_err("orangefs_unmount: service_operation %d\n", r);
414 op_release(op);
415 return r;
416 }
417
orangefs_fill_sb(struct super_block * sb,struct fs_context * fc,struct orangefs_fs_mount_response * fs_mount)418 static int orangefs_fill_sb(struct super_block *sb,
419 struct fs_context *fc,
420 struct orangefs_fs_mount_response *fs_mount)
421 {
422 int ret;
423 struct inode *root;
424 struct dentry *root_dentry;
425 struct orangefs_object_kref root_object;
426
427 ORANGEFS_SB(sb)->sb = sb;
428
429 ORANGEFS_SB(sb)->root_khandle = fs_mount->root_khandle;
430 ORANGEFS_SB(sb)->fs_id = fs_mount->fs_id;
431 ORANGEFS_SB(sb)->id = fs_mount->id;
432
433 /* Hang the xattr handlers off the superblock */
434 sb->s_xattr = orangefs_xattr_handlers;
435 sb->s_magic = ORANGEFS_SUPER_MAGIC;
436 sb->s_op = &orangefs_s_ops;
437 set_default_d_op(sb, &orangefs_dentry_operations);
438
439 sb->s_blocksize = PAGE_SIZE;
440 sb->s_blocksize_bits = PAGE_SHIFT;
441 sb->s_maxbytes = MAX_LFS_FILESIZE;
442
443 ret = super_setup_bdi(sb);
444 if (ret)
445 return ret;
446
447 root_object.khandle = ORANGEFS_SB(sb)->root_khandle;
448 root_object.fs_id = ORANGEFS_SB(sb)->fs_id;
449 gossip_debug(GOSSIP_SUPER_DEBUG,
450 "get inode %pU, fsid %d\n",
451 &root_object.khandle,
452 root_object.fs_id);
453
454 root = orangefs_iget(sb, &root_object);
455 if (IS_ERR(root))
456 return PTR_ERR(root);
457
458 gossip_debug(GOSSIP_SUPER_DEBUG,
459 "Allocated root inode [%p] with mode %x\n",
460 root,
461 root->i_mode);
462
463 /* allocates and places root dentry in dcache */
464 root_dentry = d_make_root(root);
465 if (!root_dentry)
466 return -ENOMEM;
467
468 sb->s_export_op = &orangefs_export_ops;
469 sb->s_root = root_dentry;
470 return 0;
471 }
472
orangefs_get_tree(struct fs_context * fc)473 static int orangefs_get_tree(struct fs_context *fc)
474 {
475 int ret;
476 struct super_block *sb = ERR_PTR(-EINVAL);
477 struct orangefs_kernel_op_s *new_op;
478
479 if (!fc->source)
480 return invalf(fc, "Device name not specified.\n");
481
482 gossip_debug(GOSSIP_SUPER_DEBUG,
483 "orangefs_mount: called with devname %s\n",
484 fc->source);
485
486 new_op = op_alloc(ORANGEFS_VFS_OP_FS_MOUNT);
487 if (!new_op)
488 return -ENOMEM;
489
490 strscpy(new_op->upcall.req.fs_mount.orangefs_config_server, fc->source);
491
492 gossip_debug(GOSSIP_SUPER_DEBUG,
493 "Attempting ORANGEFS Mount via host %s\n",
494 new_op->upcall.req.fs_mount.orangefs_config_server);
495
496 ret = service_operation(new_op, "orangefs_mount", 0);
497 gossip_debug(GOSSIP_SUPER_DEBUG,
498 "orangefs_mount: mount got return value of %d\n", ret);
499 if (ret)
500 goto free_op;
501
502 if (new_op->downcall.resp.fs_mount.fs_id == ORANGEFS_FS_ID_NULL) {
503 gossip_err("ERROR: Retrieved null fs_id\n");
504 ret = -EINVAL;
505 goto free_op;
506 }
507
508 sb = sget_fc(fc, NULL, set_anon_super_fc);
509
510 if (IS_ERR(sb)) {
511 ret = PTR_ERR(sb);
512 orangefs_unmount(new_op->downcall.resp.fs_mount.id,
513 new_op->downcall.resp.fs_mount.fs_id,
514 fc->source);
515 goto free_op;
516 }
517
518 /* init our private orangefs sb info */
519 ret = orangefs_fill_sb(sb, fc, &new_op->downcall.resp.fs_mount);
520
521 if (ret)
522 goto free_sb_and_op;
523
524 /*
525 * on successful mount, store the devname and data
526 * used
527 */
528 strscpy(ORANGEFS_SB(sb)->devname, fc->source);
529
530 /* mount_pending must be cleared */
531 ORANGEFS_SB(sb)->mount_pending = 0;
532
533 /*
534 * finally, add this sb to our list of known orangefs
535 * sb's
536 */
537 gossip_debug(GOSSIP_SUPER_DEBUG,
538 "Adding SB %p to orangefs superblocks\n",
539 ORANGEFS_SB(sb));
540 spin_lock(&orangefs_superblocks_lock);
541 list_add_tail(&ORANGEFS_SB(sb)->list, &orangefs_superblocks);
542 spin_unlock(&orangefs_superblocks_lock);
543 op_release(new_op);
544
545 /* Must be removed from the list now. */
546 ORANGEFS_SB(sb)->no_list = 0;
547
548 if (orangefs_userspace_version >= 20906) {
549 new_op = op_alloc(ORANGEFS_VFS_OP_FEATURES);
550 if (!new_op)
551 return -ENOMEM;
552 new_op->upcall.req.features.features = 0;
553 ret = service_operation(new_op, "orangefs_features", 0);
554 orangefs_features = new_op->downcall.resp.features.features;
555 op_release(new_op);
556 } else {
557 orangefs_features = 0;
558 }
559
560 fc->root = dget(sb->s_root);
561 return 0;
562
563 free_sb_and_op:
564 /* Will call orangefs_kill_sb with sb not in list. */
565 ORANGEFS_SB(sb)->no_list = 1;
566 /* ORANGEFS_VFS_OP_FS_UMOUNT is done by orangefs_kill_sb. */
567 deactivate_locked_super(sb);
568 free_op:
569 gossip_err("orangefs_mount: mount request failed with %d\n", ret);
570 if (ret == -EINVAL) {
571 gossip_err("Ensure that all orangefs-servers have the same FS configuration files\n");
572 gossip_err("Look at pvfs2-client-core log file (typically /tmp/pvfs2-client.log) for more details\n");
573 }
574
575 op_release(new_op);
576
577 return ret;
578 }
579
orangefs_free_fc(struct fs_context * fc)580 static void orangefs_free_fc(struct fs_context *fc)
581 {
582 kfree(fc->s_fs_info);
583 }
584
585 static const struct fs_context_operations orangefs_context_ops = {
586 .free = orangefs_free_fc,
587 .parse_param = orangefs_parse_param,
588 .get_tree = orangefs_get_tree,
589 .reconfigure = orangefs_reconfigure,
590 };
591
592 /*
593 * Set up the filesystem mount context.
594 */
orangefs_init_fs_context(struct fs_context * fc)595 int orangefs_init_fs_context(struct fs_context *fc)
596 {
597 struct orangefs_sb_info_s *osi;
598
599 osi = kzalloc_obj(struct orangefs_sb_info_s);
600 if (!osi)
601 return -ENOMEM;
602
603 /*
604 * Force any potential flags that might be set from the mount
605 * to zero, ie, initialize to unset.
606 */
607 fc->sb_flags_mask &= ~SB_POSIXACL;
608 osi->flags &= ~ORANGEFS_OPT_INTR;
609 osi->flags &= ~ORANGEFS_OPT_LOCAL_LOCK;
610
611 fc->s_fs_info = osi;
612 fc->ops = &orangefs_context_ops;
613 return 0;
614 }
615
orangefs_kill_sb(struct super_block * sb)616 void orangefs_kill_sb(struct super_block *sb)
617 {
618 int r;
619 gossip_debug(GOSSIP_SUPER_DEBUG, "orangefs_kill_sb: called\n");
620
621 /* provided sb cleanup */
622 kill_anon_super(sb);
623
624 if (!ORANGEFS_SB(sb)) {
625 mutex_lock(&orangefs_request_mutex);
626 mutex_unlock(&orangefs_request_mutex);
627 return;
628 }
629 /*
630 * issue the unmount to userspace to tell it to remove the
631 * dynamic mount info it has for this superblock
632 */
633 r = orangefs_unmount(ORANGEFS_SB(sb)->id, ORANGEFS_SB(sb)->fs_id,
634 ORANGEFS_SB(sb)->devname);
635 if (!r)
636 ORANGEFS_SB(sb)->mount_pending = 1;
637
638 if (!ORANGEFS_SB(sb)->no_list) {
639 /* remove the sb from our list of orangefs specific sb's */
640 spin_lock(&orangefs_superblocks_lock);
641 /* not list_del_init */
642 __list_del_entry(&ORANGEFS_SB(sb)->list);
643 ORANGEFS_SB(sb)->list.prev = NULL;
644 spin_unlock(&orangefs_superblocks_lock);
645 }
646
647 /*
648 * make sure that ORANGEFS_DEV_REMOUNT_ALL loop that might've seen us
649 * gets completed before we free the dang thing.
650 */
651 mutex_lock(&orangefs_request_mutex);
652 mutex_unlock(&orangefs_request_mutex);
653
654 /* free the orangefs superblock private data */
655 kfree(ORANGEFS_SB(sb));
656 }
657
orangefs_inode_cache_initialize(void)658 int orangefs_inode_cache_initialize(void)
659 {
660 orangefs_inode_cache = kmem_cache_create_usercopy(
661 "orangefs_inode_cache",
662 sizeof(struct orangefs_inode_s),
663 0,
664 0,
665 offsetof(struct orangefs_inode_s,
666 link_target),
667 sizeof_field(struct orangefs_inode_s,
668 link_target),
669 orangefs_inode_cache_ctor);
670
671 if (!orangefs_inode_cache) {
672 gossip_err("Cannot create orangefs_inode_cache\n");
673 return -ENOMEM;
674 }
675 return 0;
676 }
677
orangefs_inode_cache_finalize(void)678 int orangefs_inode_cache_finalize(void)
679 {
680 kmem_cache_destroy(orangefs_inode_cache);
681 return 0;
682 }
683