1#ifndef _FS_CEPH_SUPER_H
2#define _FS_CEPH_SUPER_H
3
4#include <linux/ceph/ceph_debug.h>
5
6#include <asm/unaligned.h>
7#include <linux/backing-dev.h>
8#include <linux/completion.h>
9#include <linux/exportfs.h>
10#include <linux/fs.h>
11#include <linux/mempool.h>
12#include <linux/pagemap.h>
13#include <linux/wait.h>
14#include <linux/writeback.h>
15#include <linux/slab.h>
16
17#include <linux/ceph/libceph.h>
18
19
20#define CEPH_SUPER_MAGIC 0x00c36400
21
22
23
24#define CEPH_BLOCK_SHIFT 22
25#define CEPH_BLOCK (1 << CEPH_BLOCK_SHIFT)
26
27#define CEPH_MOUNT_OPT_DIRSTAT (1<<4)
28#define CEPH_MOUNT_OPT_RBYTES (1<<5)
29#define CEPH_MOUNT_OPT_NOASYNCREADDIR (1<<7)
30#define CEPH_MOUNT_OPT_INO32 (1<<8)
31#define CEPH_MOUNT_OPT_DCACHE (1<<9)
32
33#define CEPH_MOUNT_OPT_DEFAULT (CEPH_MOUNT_OPT_RBYTES)
34
35#define ceph_set_mount_opt(fsc, opt) \
36 (fsc)->mount_options->flags |= CEPH_MOUNT_OPT_##opt;
37#define ceph_test_mount_opt(fsc, opt) \
38 (!!((fsc)->mount_options->flags & CEPH_MOUNT_OPT_##opt))
39
40#define CEPH_RSIZE_DEFAULT 0
41#define CEPH_RASIZE_DEFAULT (8192*1024)
42#define CEPH_MAX_READDIR_DEFAULT 1024
43#define CEPH_MAX_READDIR_BYTES_DEFAULT (512*1024)
44#define CEPH_SNAPDIRNAME_DEFAULT ".snap"
45
46struct ceph_mount_options {
47 int flags;
48 int sb_flags;
49
50 int wsize;
51 int rsize;
52 int rasize;
53 int congestion_kb;
54 int caps_wanted_delay_min, caps_wanted_delay_max;
55 int cap_release_safety;
56 int max_readdir;
57 int max_readdir_bytes;
58
59
60
61
62
63
64 char *snapdir_name;
65};
66
67struct ceph_fs_client {
68 struct super_block *sb;
69
70 struct ceph_mount_options *mount_options;
71 struct ceph_client *client;
72
73 unsigned long mount_state;
74 int min_caps;
75
76 struct ceph_mds_client *mdsc;
77
78
79 mempool_t *wb_pagevec_pool;
80 struct workqueue_struct *wb_wq;
81 struct workqueue_struct *pg_inv_wq;
82 struct workqueue_struct *trunc_wq;
83 atomic_long_t writeback_count;
84
85 struct backing_dev_info backing_dev_info;
86
87#ifdef CONFIG_DEBUG_FS
88 struct dentry *debugfs_dentry_lru, *debugfs_caps;
89 struct dentry *debugfs_congestion_kb;
90 struct dentry *debugfs_bdi;
91 struct dentry *debugfs_mdsc, *debugfs_mdsmap;
92#endif
93};
94
95
96
97
98
99
100
101
102
103
104
105
106struct ceph_cap {
107 struct ceph_inode_info *ci;
108 struct rb_node ci_node;
109 struct ceph_mds_session *session;
110 struct list_head session_caps;
111 int mds;
112 u64 cap_id;
113 int issued;
114 int implemented;
115 int mds_wanted;
116 u32 seq, issue_seq, mseq;
117 u32 cap_gen;
118 unsigned long last_used;
119 struct list_head caps_item;
120};
121
122#define CHECK_CAPS_NODELAY 1
123#define CHECK_CAPS_AUTHONLY 2
124#define CHECK_CAPS_FLUSH 4
125
126
127
128
129
130
131struct ceph_cap_snap {
132 atomic_t nref;
133 struct ceph_inode_info *ci;
134 struct list_head ci_item, flushing_item;
135
136 u64 follows, flush_tid;
137 int issued, dirty;
138 struct ceph_snap_context *context;
139
140 umode_t mode;
141 kuid_t uid;
142 kgid_t gid;
143
144 struct ceph_buffer *xattr_blob;
145 u64 xattr_version;
146
147 u64 size;
148 struct timespec mtime, atime, ctime;
149 u64 time_warp_seq;
150 int writing;
151 int dirty_pages;
152};
153
154static inline void ceph_put_cap_snap(struct ceph_cap_snap *capsnap)
155{
156 if (atomic_dec_and_test(&capsnap->nref)) {
157 if (capsnap->xattr_blob)
158 ceph_buffer_put(capsnap->xattr_blob);
159 kfree(capsnap);
160 }
161}
162
163
164
165
166
167
168
169
170
171#define CEPH_MAX_DIRFRAG_REP 4
172
173struct ceph_inode_frag {
174 struct rb_node node;
175
176
177 u32 frag;
178 int split_by;
179
180
181 int mds;
182 int ndist;
183 int dist[CEPH_MAX_DIRFRAG_REP];
184};
185
186
187
188
189
190struct ceph_inode_xattr {
191 struct rb_node node;
192
193 const char *name;
194 int name_len;
195 const char *val;
196 int val_len;
197 int dirty;
198
199 int should_free_name;
200 int should_free_val;
201};
202
203
204
205
206struct ceph_dentry_info {
207 unsigned long flags;
208 struct ceph_mds_session *lease_session;
209 u32 lease_gen, lease_shared_gen;
210 u32 lease_seq;
211 unsigned long lease_renew_after, lease_renew_from;
212 struct list_head lru;
213 struct dentry *dentry;
214 u64 time;
215 u64 offset;
216};
217
218
219
220
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224
225
226
227
228#define CEPH_D_COMPLETE 1
229
230struct ceph_inode_xattrs_info {
231
232
233
234
235
236
237
238 struct ceph_buffer *blob, *prealloc_blob;
239
240 struct rb_root index;
241 bool dirty;
242 int count;
243 int names_size;
244 int vals_size;
245 u64 version, index_version;
246};
247
248
249
250
251struct ceph_inode_info {
252 struct ceph_vino i_vino;
253
254 spinlock_t i_ceph_lock;
255
256 u64 i_version;
257 u32 i_time_warp_seq;
258
259 unsigned i_ceph_flags;
260 unsigned long i_release_count;
261
262 struct ceph_dir_layout i_dir_layout;
263 struct ceph_file_layout i_layout;
264 char *i_symlink;
265
266
267 struct timespec i_rctime;
268 u64 i_rbytes, i_rfiles, i_rsubdirs;
269 u64 i_files, i_subdirs;
270 u64 i_max_offset;
271
272 struct rb_root i_fragtree;
273 struct mutex i_fragtree_mutex;
274
275 struct ceph_inode_xattrs_info i_xattrs;
276
277
278
279 struct rb_root i_caps;
280 struct ceph_cap *i_auth_cap;
281 unsigned i_dirty_caps, i_flushing_caps;
282 struct list_head i_dirty_item, i_flushing_item;
283 u64 i_cap_flush_seq;
284
285
286
287 u16 i_cap_flush_last_tid, i_cap_flush_tid[CEPH_CAP_BITS];
288 wait_queue_head_t i_cap_wq;
289 unsigned long i_hold_caps_min;
290 unsigned long i_hold_caps_max;
291 struct list_head i_cap_delay_list;
292 int i_cap_exporting_mds;
293 unsigned i_cap_exporting_mseq;
294 unsigned i_cap_exporting_issued;
295 struct ceph_cap_reservation i_cap_migration_resv;
296 struct list_head i_cap_snaps;
297 struct ceph_snap_context *i_head_snapc;
298
299 unsigned i_snap_caps;
300
301 int i_nr_by_mode[CEPH_FILE_MODE_NUM];
302
303 u32 i_truncate_seq;
304 u64 i_truncate_size;
305 int i_truncate_pending;
306
307 u64 i_max_size;
308 u64 i_reported_size;
309 u64 i_wanted_max_size;
310 u64 i_requested_max_size;
311
312
313 int i_pin_ref;
314 int i_rd_ref, i_rdcache_ref, i_wr_ref, i_wb_ref;
315 int i_wrbuffer_ref, i_wrbuffer_ref_head;
316 u32 i_shared_gen;
317 u32 i_rdcache_gen;
318 u32 i_rdcache_revoking;
319
320 struct list_head i_unsafe_writes;
321 struct list_head i_unsafe_dirops;
322 spinlock_t i_unsafe_lock;
323
324 struct ceph_snap_realm *i_snap_realm;
325 int i_snap_realm_counter;
326 struct list_head i_snap_realm_item;
327 struct list_head i_snap_flush_item;
328
329 struct work_struct i_wb_work;
330 struct work_struct i_pg_inv_work;
331
332 struct work_struct i_vmtruncate_work;
333
334 struct inode vfs_inode;
335};
336
337static inline struct ceph_inode_info *ceph_inode(struct inode *inode)
338{
339 return container_of(inode, struct ceph_inode_info, vfs_inode);
340}
341
342static inline struct ceph_fs_client *ceph_inode_to_client(struct inode *inode)
343{
344 return (struct ceph_fs_client *)inode->i_sb->s_fs_info;
345}
346
347static inline struct ceph_fs_client *ceph_sb_to_client(struct super_block *sb)
348{
349 return (struct ceph_fs_client *)sb->s_fs_info;
350}
351
352static inline struct ceph_vino ceph_vino(struct inode *inode)
353{
354 return ceph_inode(inode)->i_vino;
355}
356
357
358
359
360
361
362
363
364
365static inline u32 ceph_ino_to_ino32(__u64 vino)
366{
367 u32 ino = vino & 0xffffffff;
368 ino ^= vino >> 32;
369 if (!ino)
370 ino = 2;
371 return ino;
372}
373
374
375
376
377static inline ino_t ceph_vino_to_ino(struct ceph_vino vino)
378{
379#if BITS_PER_LONG == 32
380 return ceph_ino_to_ino32(vino.ino);
381#else
382 return (ino_t)vino.ino;
383#endif
384}
385
386
387
388
389#if BITS_PER_LONG == 32
390static inline ino_t ceph_translate_ino(struct super_block *sb, ino_t ino)
391{
392 return ino;
393}
394#else
395static inline ino_t ceph_translate_ino(struct super_block *sb, ino_t ino)
396{
397 if (ceph_test_mount_opt(ceph_sb_to_client(sb), INO32))
398 ino = ceph_ino_to_ino32(ino);
399 return ino;
400}
401#endif
402
403
404
405#define ceph_vinop(i) ceph_inode(i)->i_vino.ino, ceph_inode(i)->i_vino.snap
406
407static inline u64 ceph_ino(struct inode *inode)
408{
409 return ceph_inode(inode)->i_vino.ino;
410}
411static inline u64 ceph_snap(struct inode *inode)
412{
413 return ceph_inode(inode)->i_vino.snap;
414}
415
416static inline int ceph_ino_compare(struct inode *inode, void *data)
417{
418 struct ceph_vino *pvino = (struct ceph_vino *)data;
419 struct ceph_inode_info *ci = ceph_inode(inode);
420 return ci->i_vino.ino == pvino->ino &&
421 ci->i_vino.snap == pvino->snap;
422}
423
424static inline struct inode *ceph_find_inode(struct super_block *sb,
425 struct ceph_vino vino)
426{
427 ino_t t = ceph_vino_to_ino(vino);
428 return ilookup5(sb, t, ceph_ino_compare, &vino);
429}
430
431
432
433
434
435#define CEPH_I_NODELAY 4
436#define CEPH_I_FLUSH 8
437#define CEPH_I_NOFLUSH 16
438
439static inline void ceph_i_clear(struct inode *inode, unsigned mask)
440{
441 struct ceph_inode_info *ci = ceph_inode(inode);
442
443 spin_lock(&ci->i_ceph_lock);
444 ci->i_ceph_flags &= ~mask;
445 spin_unlock(&ci->i_ceph_lock);
446}
447
448static inline void ceph_i_set(struct inode *inode, unsigned mask)
449{
450 struct ceph_inode_info *ci = ceph_inode(inode);
451
452 spin_lock(&ci->i_ceph_lock);
453 ci->i_ceph_flags |= mask;
454 spin_unlock(&ci->i_ceph_lock);
455}
456
457static inline bool ceph_i_test(struct inode *inode, unsigned mask)
458{
459 struct ceph_inode_info *ci = ceph_inode(inode);
460 bool r;
461
462 spin_lock(&ci->i_ceph_lock);
463 r = (ci->i_ceph_flags & mask) == mask;
464 spin_unlock(&ci->i_ceph_lock);
465 return r;
466}
467
468
469
470extern struct ceph_inode_frag *__ceph_find_frag(struct ceph_inode_info *ci,
471 u32 f);
472
473
474
475
476
477extern u32 ceph_choose_frag(struct ceph_inode_info *ci, u32 v,
478 struct ceph_inode_frag *pfrag,
479 int *found);
480
481static inline struct ceph_dentry_info *ceph_dentry(struct dentry *dentry)
482{
483 return (struct ceph_dentry_info *)dentry->d_fsdata;
484}
485
486static inline loff_t ceph_make_fpos(unsigned frag, unsigned off)
487{
488 return ((loff_t)frag << 32) | (loff_t)off;
489}
490
491
492
493
494void ceph_dir_set_complete(struct inode *inode);
495void ceph_dir_clear_complete(struct inode *inode);
496bool ceph_dir_test_complete(struct inode *inode);
497
498
499
500
501static inline bool __ceph_is_any_real_caps(struct ceph_inode_info *ci)
502{
503 return !RB_EMPTY_ROOT(&ci->i_caps);
504}
505
506extern int __ceph_caps_issued(struct ceph_inode_info *ci, int *implemented);
507extern int __ceph_caps_issued_mask(struct ceph_inode_info *ci, int mask, int t);
508extern int __ceph_caps_issued_other(struct ceph_inode_info *ci,
509 struct ceph_cap *cap);
510
511static inline int ceph_caps_issued(struct ceph_inode_info *ci)
512{
513 int issued;
514 spin_lock(&ci->i_ceph_lock);
515 issued = __ceph_caps_issued(ci, NULL);
516 spin_unlock(&ci->i_ceph_lock);
517 return issued;
518}
519
520static inline int ceph_caps_issued_mask(struct ceph_inode_info *ci, int mask,
521 int touch)
522{
523 int r;
524 spin_lock(&ci->i_ceph_lock);
525 r = __ceph_caps_issued_mask(ci, mask, touch);
526 spin_unlock(&ci->i_ceph_lock);
527 return r;
528}
529
530static inline int __ceph_caps_dirty(struct ceph_inode_info *ci)
531{
532 return ci->i_dirty_caps | ci->i_flushing_caps;
533}
534extern int __ceph_mark_dirty_caps(struct ceph_inode_info *ci, int mask);
535
536extern int ceph_caps_revoking(struct ceph_inode_info *ci, int mask);
537extern int __ceph_caps_used(struct ceph_inode_info *ci);
538
539extern int __ceph_caps_file_wanted(struct ceph_inode_info *ci);
540
541
542
543
544static inline int __ceph_caps_wanted(struct ceph_inode_info *ci)
545{
546 int w = __ceph_caps_file_wanted(ci) | __ceph_caps_used(ci);
547 if (w & CEPH_CAP_FILE_BUFFER)
548 w |= CEPH_CAP_FILE_EXCL;
549 return w;
550}
551
552
553extern int __ceph_caps_mds_wanted(struct ceph_inode_info *ci);
554
555extern void ceph_caps_init(struct ceph_mds_client *mdsc);
556extern void ceph_caps_finalize(struct ceph_mds_client *mdsc);
557extern void ceph_adjust_min_caps(struct ceph_mds_client *mdsc, int delta);
558extern int ceph_reserve_caps(struct ceph_mds_client *mdsc,
559 struct ceph_cap_reservation *ctx, int need);
560extern int ceph_unreserve_caps(struct ceph_mds_client *mdsc,
561 struct ceph_cap_reservation *ctx);
562extern void ceph_reservation_status(struct ceph_fs_client *client,
563 int *total, int *avail, int *used,
564 int *reserved, int *min);
565
566
567
568
569
570
571#define CEPH_F_SYNC 1
572#define CEPH_F_ATEND 2
573
574struct ceph_file_info {
575 short fmode;
576 short flags;
577
578
579 u32 frag;
580 struct ceph_mds_request *last_readdir;
581
582
583 unsigned offset;
584 u64 next_offset;
585 char *last_name;
586 struct dentry *dentry;
587 unsigned long dir_release_count;
588
589
590 char *dir_info;
591 int dir_info_len;
592};
593
594
595
596
597
598
599
600
601
602
603
604
605struct ceph_snap_realm {
606 u64 ino;
607 atomic_t nref;
608 struct rb_node node;
609
610 u64 created, seq;
611 u64 parent_ino;
612 u64 parent_since;
613
614 u64 *prior_parent_snaps;
615 u32 num_prior_parent_snaps;
616 u64 *snaps;
617 u32 num_snaps;
618
619 struct ceph_snap_realm *parent;
620 struct list_head children;
621 struct list_head child_item;
622
623 struct list_head empty_item;
624
625 struct list_head dirty_item;
626
627
628 struct ceph_snap_context *cached_context;
629
630 struct list_head inodes_with_caps;
631 spinlock_t inodes_with_caps_lock;
632};
633
634static inline int default_congestion_kb(void)
635{
636 int congestion_kb;
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656 congestion_kb = (16*int_sqrt(totalram_pages)) << (PAGE_SHIFT-10);
657 if (congestion_kb > 256*1024)
658 congestion_kb = 256*1024;
659
660 return congestion_kb;
661}
662
663
664
665
666struct ceph_snap_realm *ceph_lookup_snap_realm(struct ceph_mds_client *mdsc,
667 u64 ino);
668extern void ceph_get_snap_realm(struct ceph_mds_client *mdsc,
669 struct ceph_snap_realm *realm);
670extern void ceph_put_snap_realm(struct ceph_mds_client *mdsc,
671 struct ceph_snap_realm *realm);
672extern int ceph_update_snap_trace(struct ceph_mds_client *m,
673 void *p, void *e, bool deletion);
674extern void ceph_handle_snap(struct ceph_mds_client *mdsc,
675 struct ceph_mds_session *session,
676 struct ceph_msg *msg);
677extern void ceph_queue_cap_snap(struct ceph_inode_info *ci);
678extern int __ceph_finish_cap_snap(struct ceph_inode_info *ci,
679 struct ceph_cap_snap *capsnap);
680extern void ceph_cleanup_empty_realms(struct ceph_mds_client *mdsc);
681
682
683
684
685
686static inline bool __ceph_have_pending_cap_snap(struct ceph_inode_info *ci)
687{
688 return !list_empty(&ci->i_cap_snaps) &&
689 list_entry(ci->i_cap_snaps.prev, struct ceph_cap_snap,
690 ci_item)->writing;
691}
692
693
694extern const struct inode_operations ceph_file_iops;
695
696extern struct inode *ceph_alloc_inode(struct super_block *sb);
697extern void ceph_destroy_inode(struct inode *inode);
698
699extern struct inode *ceph_get_inode(struct super_block *sb,
700 struct ceph_vino vino);
701extern struct inode *ceph_get_snapdir(struct inode *parent);
702extern int ceph_fill_file_size(struct inode *inode, int issued,
703 u32 truncate_seq, u64 truncate_size, u64 size);
704extern void ceph_fill_file_time(struct inode *inode, int issued,
705 u64 time_warp_seq, struct timespec *ctime,
706 struct timespec *mtime, struct timespec *atime);
707extern int ceph_fill_trace(struct super_block *sb,
708 struct ceph_mds_request *req,
709 struct ceph_mds_session *session);
710extern int ceph_readdir_prepopulate(struct ceph_mds_request *req,
711 struct ceph_mds_session *session);
712
713extern int ceph_inode_holds_cap(struct inode *inode, int mask);
714
715extern int ceph_inode_set_size(struct inode *inode, loff_t size);
716extern void __ceph_do_pending_vmtruncate(struct inode *inode);
717extern void ceph_queue_vmtruncate(struct inode *inode);
718
719extern void ceph_queue_invalidate(struct inode *inode);
720extern void ceph_queue_writeback(struct inode *inode);
721
722extern int ceph_do_getattr(struct inode *inode, int mask);
723extern int ceph_permission(struct inode *inode, int mask);
724extern int ceph_setattr(struct dentry *dentry, struct iattr *attr);
725extern int ceph_getattr(struct vfsmount *mnt, struct dentry *dentry,
726 struct kstat *stat);
727
728
729extern int ceph_setxattr(struct dentry *, const char *, const void *,
730 size_t, int);
731extern ssize_t ceph_getxattr(struct dentry *, const char *, void *, size_t);
732extern ssize_t ceph_listxattr(struct dentry *, char *, size_t);
733extern int ceph_removexattr(struct dentry *, const char *);
734extern void __ceph_build_xattrs_blob(struct ceph_inode_info *ci);
735extern void __ceph_destroy_xattrs(struct ceph_inode_info *ci);
736extern void __init ceph_xattr_init(void);
737extern void ceph_xattr_exit(void);
738
739
740extern const char *ceph_cap_string(int c);
741extern void ceph_handle_caps(struct ceph_mds_session *session,
742 struct ceph_msg *msg);
743extern int ceph_add_cap(struct inode *inode,
744 struct ceph_mds_session *session, u64 cap_id,
745 int fmode, unsigned issued, unsigned wanted,
746 unsigned cap, unsigned seq, u64 realmino, int flags,
747 struct ceph_cap_reservation *caps_reservation);
748extern void __ceph_remove_cap(struct ceph_cap *cap);
749static inline void ceph_remove_cap(struct ceph_cap *cap)
750{
751 spin_lock(&cap->ci->i_ceph_lock);
752 __ceph_remove_cap(cap);
753 spin_unlock(&cap->ci->i_ceph_lock);
754}
755extern void ceph_put_cap(struct ceph_mds_client *mdsc,
756 struct ceph_cap *cap);
757
758extern void ceph_queue_caps_release(struct inode *inode);
759extern int ceph_write_inode(struct inode *inode, struct writeback_control *wbc);
760extern int ceph_fsync(struct file *file, loff_t start, loff_t end,
761 int datasync);
762extern void ceph_kick_flushing_caps(struct ceph_mds_client *mdsc,
763 struct ceph_mds_session *session);
764extern struct ceph_cap *ceph_get_cap_for_mds(struct ceph_inode_info *ci,
765 int mds);
766extern int ceph_get_cap_mds(struct inode *inode);
767extern void ceph_get_cap_refs(struct ceph_inode_info *ci, int caps);
768extern void ceph_put_cap_refs(struct ceph_inode_info *ci, int had);
769extern void ceph_put_wrbuffer_cap_refs(struct ceph_inode_info *ci, int nr,
770 struct ceph_snap_context *snapc);
771extern void __ceph_flush_snaps(struct ceph_inode_info *ci,
772 struct ceph_mds_session **psession,
773 int again);
774extern void ceph_check_caps(struct ceph_inode_info *ci, int flags,
775 struct ceph_mds_session *session);
776extern void ceph_check_delayed_caps(struct ceph_mds_client *mdsc);
777extern void ceph_flush_dirty_caps(struct ceph_mds_client *mdsc);
778
779extern int ceph_encode_inode_release(void **p, struct inode *inode,
780 int mds, int drop, int unless, int force);
781extern int ceph_encode_dentry_release(void **p, struct dentry *dn,
782 int mds, int drop, int unless);
783
784extern int ceph_get_caps(struct ceph_inode_info *ci, int need, int want,
785 int *got, loff_t endoff);
786
787
788static inline void __ceph_get_fmode(struct ceph_inode_info *ci, int mode)
789{
790 ci->i_nr_by_mode[mode]++;
791}
792extern void ceph_put_fmode(struct ceph_inode_info *ci, int mode);
793
794
795extern const struct address_space_operations ceph_aops;
796extern int ceph_mmap(struct file *file, struct vm_area_struct *vma);
797
798
799extern const struct file_operations ceph_file_fops;
800extern const struct address_space_operations ceph_aops;
801
802extern int ceph_open(struct inode *inode, struct file *file);
803extern int ceph_atomic_open(struct inode *dir, struct dentry *dentry,
804 struct file *file, unsigned flags, umode_t mode,
805 int *opened);
806extern int ceph_release(struct inode *inode, struct file *filp);
807
808
809extern const struct file_operations ceph_dir_fops;
810extern const struct inode_operations ceph_dir_iops;
811extern const struct dentry_operations ceph_dentry_ops, ceph_snap_dentry_ops,
812 ceph_snapdir_dentry_ops;
813
814extern int ceph_handle_notrace_create(struct inode *dir, struct dentry *dentry);
815extern int ceph_handle_snapdir(struct ceph_mds_request *req,
816 struct dentry *dentry, int err);
817extern struct dentry *ceph_finish_lookup(struct ceph_mds_request *req,
818 struct dentry *dentry, int err);
819
820extern void ceph_dentry_lru_add(struct dentry *dn);
821extern void ceph_dentry_lru_touch(struct dentry *dn);
822extern void ceph_dentry_lru_del(struct dentry *dn);
823extern void ceph_invalidate_dentry_lease(struct dentry *dentry);
824extern unsigned ceph_dentry_hash(struct inode *dir, struct dentry *dn);
825extern struct inode *ceph_get_dentry_parent_inode(struct dentry *dentry);
826
827
828
829
830
831int ceph_init_dentry(struct dentry *dentry);
832
833
834
835extern long ceph_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
836
837
838extern const struct export_operations ceph_export_ops;
839
840
841extern int ceph_lock(struct file *file, int cmd, struct file_lock *fl);
842extern int ceph_flock(struct file *file, int cmd, struct file_lock *fl);
843extern void ceph_count_locks(struct inode *inode, int *p_num, int *f_num);
844extern int ceph_encode_locks(struct inode *i, struct ceph_pagelist *p,
845 int p_locks, int f_locks);
846extern int lock_to_ceph_filelock(struct file_lock *fl, struct ceph_filelock *c);
847
848
849extern int ceph_fs_debugfs_init(struct ceph_fs_client *client);
850extern void ceph_fs_debugfs_cleanup(struct ceph_fs_client *client);
851
852#endif
853