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#include <linux/posix_acl.h>
17
18#include <linux/ceph/libceph.h>
19
20#ifdef CONFIG_CEPH_FSCACHE
21#include <linux/fscache.h>
22#endif
23
24
25#define CEPH_SUPER_MAGIC 0x00c36400
26
27
28
29#define CEPH_BLOCK_SHIFT 22
30#define CEPH_BLOCK (1 << CEPH_BLOCK_SHIFT)
31
32#define CEPH_MOUNT_OPT_DIRSTAT (1<<4)
33#define CEPH_MOUNT_OPT_RBYTES (1<<5)
34#define CEPH_MOUNT_OPT_NOASYNCREADDIR (1<<7)
35#define CEPH_MOUNT_OPT_INO32 (1<<8)
36#define CEPH_MOUNT_OPT_DCACHE (1<<9)
37#define CEPH_MOUNT_OPT_FSCACHE (1<<10)
38
39#define CEPH_MOUNT_OPT_DEFAULT (CEPH_MOUNT_OPT_RBYTES)
40
41#define ceph_set_mount_opt(fsc, opt) \
42 (fsc)->mount_options->flags |= CEPH_MOUNT_OPT_##opt;
43#define ceph_test_mount_opt(fsc, opt) \
44 (!!((fsc)->mount_options->flags & CEPH_MOUNT_OPT_##opt))
45
46#define CEPH_RSIZE_DEFAULT 0
47#define CEPH_RASIZE_DEFAULT (8192*1024)
48#define CEPH_MAX_READDIR_DEFAULT 1024
49#define CEPH_MAX_READDIR_BYTES_DEFAULT (512*1024)
50#define CEPH_SNAPDIRNAME_DEFAULT ".snap"
51
52struct ceph_mount_options {
53 int flags;
54 int sb_flags;
55
56 int wsize;
57 int rsize;
58 int rasize;
59 int congestion_kb;
60 int caps_wanted_delay_min, caps_wanted_delay_max;
61 int cap_release_safety;
62 int max_readdir;
63 int max_readdir_bytes;
64
65
66
67
68
69
70 char *snapdir_name;
71};
72
73struct ceph_fs_client {
74 struct super_block *sb;
75
76 struct ceph_mount_options *mount_options;
77 struct ceph_client *client;
78
79 unsigned long mount_state;
80 int min_caps;
81
82 struct ceph_mds_client *mdsc;
83
84
85 mempool_t *wb_pagevec_pool;
86 struct workqueue_struct *wb_wq;
87 struct workqueue_struct *pg_inv_wq;
88 struct workqueue_struct *trunc_wq;
89 atomic_long_t writeback_count;
90
91 struct backing_dev_info backing_dev_info;
92
93#ifdef CONFIG_DEBUG_FS
94 struct dentry *debugfs_dentry_lru, *debugfs_caps;
95 struct dentry *debugfs_congestion_kb;
96 struct dentry *debugfs_bdi;
97 struct dentry *debugfs_mdsc, *debugfs_mdsmap;
98#endif
99
100#ifdef CONFIG_CEPH_FSCACHE
101 struct fscache_cookie *fscache;
102 struct workqueue_struct *revalidate_wq;
103#endif
104};
105
106
107
108
109
110
111
112
113
114
115
116
117struct ceph_cap {
118 struct ceph_inode_info *ci;
119 struct rb_node ci_node;
120 struct ceph_mds_session *session;
121 struct list_head session_caps;
122 int mds;
123 u64 cap_id;
124 int issued;
125 int implemented;
126 int mds_wanted;
127 u32 seq, issue_seq, mseq;
128 u32 cap_gen;
129 unsigned long last_used;
130 struct list_head caps_item;
131};
132
133#define CHECK_CAPS_NODELAY 1
134#define CHECK_CAPS_AUTHONLY 2
135#define CHECK_CAPS_FLUSH 4
136
137
138
139
140
141
142struct ceph_cap_snap {
143 atomic_t nref;
144 struct ceph_inode_info *ci;
145 struct list_head ci_item, flushing_item;
146
147 u64 follows, flush_tid;
148 int issued, dirty;
149 struct ceph_snap_context *context;
150
151 umode_t mode;
152 kuid_t uid;
153 kgid_t gid;
154
155 struct ceph_buffer *xattr_blob;
156 u64 xattr_version;
157
158 u64 size;
159 struct timespec mtime, atime, ctime;
160 u64 time_warp_seq;
161 int writing;
162 int dirty_pages;
163};
164
165static inline void ceph_put_cap_snap(struct ceph_cap_snap *capsnap)
166{
167 if (atomic_dec_and_test(&capsnap->nref)) {
168 if (capsnap->xattr_blob)
169 ceph_buffer_put(capsnap->xattr_blob);
170 kfree(capsnap);
171 }
172}
173
174
175
176
177
178
179
180
181
182#define CEPH_MAX_DIRFRAG_REP 4
183
184struct ceph_inode_frag {
185 struct rb_node node;
186
187
188 u32 frag;
189 int split_by;
190
191
192 int mds;
193 int ndist;
194 int dist[CEPH_MAX_DIRFRAG_REP];
195};
196
197
198
199
200
201struct ceph_inode_xattr {
202 struct rb_node node;
203
204 const char *name;
205 int name_len;
206 const char *val;
207 int val_len;
208 int dirty;
209
210 int should_free_name;
211 int should_free_val;
212};
213
214
215
216
217struct ceph_dentry_info {
218 struct ceph_mds_session *lease_session;
219 u32 lease_gen, lease_shared_gen;
220 u32 lease_seq;
221 unsigned long lease_renew_after, lease_renew_from;
222 struct list_head lru;
223 struct dentry *dentry;
224 u64 time;
225 u64 offset;
226};
227
228struct ceph_inode_xattrs_info {
229
230
231
232
233
234
235
236 struct ceph_buffer *blob, *prealloc_blob;
237
238 struct rb_root index;
239 bool dirty;
240 int count;
241 int names_size;
242 int vals_size;
243 u64 version, index_version;
244};
245
246
247
248
249struct ceph_inode_info {
250 struct ceph_vino i_vino;
251
252 spinlock_t i_ceph_lock;
253
254 u64 i_version;
255 u32 i_time_warp_seq;
256
257 unsigned i_ceph_flags;
258 atomic_t i_release_count;
259 atomic_t i_complete_count;
260
261 struct ceph_dir_layout i_dir_layout;
262 struct ceph_file_layout i_layout;
263 char *i_symlink;
264
265
266 struct timespec i_rctime;
267 u64 i_rbytes, i_rfiles, i_rsubdirs;
268 u64 i_files, i_subdirs;
269 u64 i_max_offset;
270
271 struct rb_root i_fragtree;
272 struct mutex i_fragtree_mutex;
273
274 struct ceph_inode_xattrs_info i_xattrs;
275
276
277
278 struct rb_root i_caps;
279 struct ceph_cap *i_auth_cap;
280 unsigned i_dirty_caps, i_flushing_caps;
281 struct list_head i_dirty_item, i_flushing_item;
282 u64 i_cap_flush_seq;
283
284
285
286 u16 i_cap_flush_last_tid, i_cap_flush_tid[CEPH_CAP_BITS];
287 wait_queue_head_t i_cap_wq;
288 unsigned long i_hold_caps_min;
289 unsigned long i_hold_caps_max;
290 struct list_head i_cap_delay_list;
291 struct ceph_cap_reservation i_cap_migration_resv;
292 struct list_head i_cap_snaps;
293 struct ceph_snap_context *i_head_snapc;
294
295 unsigned i_snap_caps;
296 unsigned i_cap_exporting_issued;
297
298 int i_nr_by_mode[CEPH_FILE_MODE_NUM];
299
300 struct mutex i_truncate_mutex;
301 u32 i_truncate_seq;
302 u64 i_truncate_size;
303 int i_truncate_pending;
304
305 u64 i_max_size;
306 u64 i_reported_size;
307 u64 i_wanted_max_size;
308 u64 i_requested_max_size;
309
310
311 int i_pin_ref;
312 int i_rd_ref, i_rdcache_ref, i_wr_ref, i_wb_ref;
313 int i_wrbuffer_ref, i_wrbuffer_ref_head;
314 u32 i_shared_gen;
315 u32 i_rdcache_gen;
316 u32 i_rdcache_revoking;
317
318 struct list_head i_unsafe_writes;
319 struct list_head i_unsafe_dirops;
320 spinlock_t i_unsafe_lock;
321
322 struct ceph_snap_realm *i_snap_realm;
323 int i_snap_realm_counter;
324 struct list_head i_snap_realm_item;
325 struct list_head i_snap_flush_item;
326
327 struct work_struct i_wb_work;
328 struct work_struct i_pg_inv_work;
329
330 struct work_struct i_vmtruncate_work;
331
332#ifdef CONFIG_CEPH_FSCACHE
333 struct fscache_cookie *fscache;
334 u32 i_fscache_gen;
335 struct work_struct i_revalidate_work;
336#endif
337 struct inode vfs_inode;
338};
339
340static inline struct ceph_inode_info *ceph_inode(struct inode *inode)
341{
342 return container_of(inode, struct ceph_inode_info, vfs_inode);
343}
344
345static inline struct ceph_fs_client *ceph_inode_to_client(struct inode *inode)
346{
347 return (struct ceph_fs_client *)inode->i_sb->s_fs_info;
348}
349
350static inline struct ceph_fs_client *ceph_sb_to_client(struct super_block *sb)
351{
352 return (struct ceph_fs_client *)sb->s_fs_info;
353}
354
355static inline struct ceph_vino ceph_vino(struct inode *inode)
356{
357 return ceph_inode(inode)->i_vino;
358}
359
360
361
362
363
364
365
366
367
368static inline u32 ceph_ino_to_ino32(__u64 vino)
369{
370 u32 ino = vino & 0xffffffff;
371 ino ^= vino >> 32;
372 if (!ino)
373 ino = 2;
374 return ino;
375}
376
377
378
379
380static inline ino_t ceph_vino_to_ino(struct ceph_vino vino)
381{
382#if BITS_PER_LONG == 32
383 return ceph_ino_to_ino32(vino.ino);
384#else
385 return (ino_t)vino.ino;
386#endif
387}
388
389
390
391
392#if BITS_PER_LONG == 32
393static inline ino_t ceph_translate_ino(struct super_block *sb, ino_t ino)
394{
395 return ino;
396}
397#else
398static inline ino_t ceph_translate_ino(struct super_block *sb, ino_t ino)
399{
400 if (ceph_test_mount_opt(ceph_sb_to_client(sb), INO32))
401 ino = ceph_ino_to_ino32(ino);
402 return ino;
403}
404#endif
405
406
407
408#define ceph_vinop(i) ceph_inode(i)->i_vino.ino, ceph_inode(i)->i_vino.snap
409
410static inline u64 ceph_ino(struct inode *inode)
411{
412 return ceph_inode(inode)->i_vino.ino;
413}
414static inline u64 ceph_snap(struct inode *inode)
415{
416 return ceph_inode(inode)->i_vino.snap;
417}
418
419static inline int ceph_ino_compare(struct inode *inode, void *data)
420{
421 struct ceph_vino *pvino = (struct ceph_vino *)data;
422 struct ceph_inode_info *ci = ceph_inode(inode);
423 return ci->i_vino.ino == pvino->ino &&
424 ci->i_vino.snap == pvino->snap;
425}
426
427static inline struct inode *ceph_find_inode(struct super_block *sb,
428 struct ceph_vino vino)
429{
430 ino_t t = ceph_vino_to_ino(vino);
431 return ilookup5(sb, t, ceph_ino_compare, &vino);
432}
433
434
435
436
437
438#define CEPH_I_NODELAY 4
439#define CEPH_I_FLUSH 8
440#define CEPH_I_NOFLUSH 16
441
442static inline void __ceph_dir_set_complete(struct ceph_inode_info *ci,
443 int release_count)
444{
445 atomic_set(&ci->i_complete_count, release_count);
446}
447
448static inline void __ceph_dir_clear_complete(struct ceph_inode_info *ci)
449{
450 atomic_inc(&ci->i_release_count);
451}
452
453static inline bool __ceph_dir_is_complete(struct ceph_inode_info *ci)
454{
455 return atomic_read(&ci->i_complete_count) ==
456 atomic_read(&ci->i_release_count);
457}
458
459static inline void ceph_dir_clear_complete(struct inode *inode)
460{
461 __ceph_dir_clear_complete(ceph_inode(inode));
462}
463
464static inline bool ceph_dir_is_complete(struct inode *inode)
465{
466 return __ceph_dir_is_complete(ceph_inode(inode));
467}
468
469
470
471extern struct ceph_inode_frag *__ceph_find_frag(struct ceph_inode_info *ci,
472 u32 f);
473
474
475
476
477
478extern u32 ceph_choose_frag(struct ceph_inode_info *ci, u32 v,
479 struct ceph_inode_frag *pfrag,
480 int *found);
481
482static inline struct ceph_dentry_info *ceph_dentry(struct dentry *dentry)
483{
484 return (struct ceph_dentry_info *)dentry->d_fsdata;
485}
486
487static inline loff_t ceph_make_fpos(unsigned frag, unsigned off)
488{
489 return ((loff_t)frag << 32) | (loff_t)off;
490}
491
492
493
494
495static inline bool __ceph_is_any_real_caps(struct ceph_inode_info *ci)
496{
497 return !RB_EMPTY_ROOT(&ci->i_caps);
498}
499
500extern int __ceph_caps_issued(struct ceph_inode_info *ci, int *implemented);
501extern int __ceph_caps_issued_mask(struct ceph_inode_info *ci, int mask, int t);
502extern int __ceph_caps_issued_other(struct ceph_inode_info *ci,
503 struct ceph_cap *cap);
504
505static inline int ceph_caps_issued(struct ceph_inode_info *ci)
506{
507 int issued;
508 spin_lock(&ci->i_ceph_lock);
509 issued = __ceph_caps_issued(ci, NULL);
510 spin_unlock(&ci->i_ceph_lock);
511 return issued;
512}
513
514static inline int ceph_caps_issued_mask(struct ceph_inode_info *ci, int mask,
515 int touch)
516{
517 int r;
518 spin_lock(&ci->i_ceph_lock);
519 r = __ceph_caps_issued_mask(ci, mask, touch);
520 spin_unlock(&ci->i_ceph_lock);
521 return r;
522}
523
524static inline int __ceph_caps_dirty(struct ceph_inode_info *ci)
525{
526 return ci->i_dirty_caps | ci->i_flushing_caps;
527}
528extern int __ceph_mark_dirty_caps(struct ceph_inode_info *ci, int mask);
529
530extern int __ceph_caps_revoking_other(struct ceph_inode_info *ci,
531 struct ceph_cap *ocap, int mask);
532extern int ceph_caps_revoking(struct ceph_inode_info *ci, int mask);
533extern int __ceph_caps_used(struct ceph_inode_info *ci);
534
535extern int __ceph_caps_file_wanted(struct ceph_inode_info *ci);
536
537
538
539
540static inline int __ceph_caps_wanted(struct ceph_inode_info *ci)
541{
542 int w = __ceph_caps_file_wanted(ci) | __ceph_caps_used(ci);
543 if (w & CEPH_CAP_FILE_BUFFER)
544 w |= CEPH_CAP_FILE_EXCL;
545 return w;
546}
547
548
549extern int __ceph_caps_mds_wanted(struct ceph_inode_info *ci);
550
551extern void ceph_caps_init(struct ceph_mds_client *mdsc);
552extern void ceph_caps_finalize(struct ceph_mds_client *mdsc);
553extern void ceph_adjust_min_caps(struct ceph_mds_client *mdsc, int delta);
554extern void ceph_reserve_caps(struct ceph_mds_client *mdsc,
555 struct ceph_cap_reservation *ctx, int need);
556extern int ceph_unreserve_caps(struct ceph_mds_client *mdsc,
557 struct ceph_cap_reservation *ctx);
558extern void ceph_reservation_status(struct ceph_fs_client *client,
559 int *total, int *avail, int *used,
560 int *reserved, int *min);
561
562
563
564
565
566
567#define CEPH_F_SYNC 1
568#define CEPH_F_ATEND 2
569
570struct ceph_file_info {
571 short fmode;
572 short flags;
573
574
575 u32 frag;
576 struct ceph_mds_request *last_readdir;
577
578
579 unsigned offset;
580 u64 next_offset;
581 char *last_name;
582 struct dentry *dentry;
583 int dir_release_count;
584
585
586 char *dir_info;
587 int dir_info_len;
588};
589
590
591
592
593
594
595
596
597
598
599
600
601struct ceph_snap_realm {
602 u64 ino;
603 atomic_t nref;
604 struct rb_node node;
605
606 u64 created, seq;
607 u64 parent_ino;
608 u64 parent_since;
609
610 u64 *prior_parent_snaps;
611 u32 num_prior_parent_snaps;
612 u64 *snaps;
613 u32 num_snaps;
614
615 struct ceph_snap_realm *parent;
616 struct list_head children;
617 struct list_head child_item;
618
619 struct list_head empty_item;
620
621 struct list_head dirty_item;
622
623
624 struct ceph_snap_context *cached_context;
625
626 struct list_head inodes_with_caps;
627 spinlock_t inodes_with_caps_lock;
628};
629
630static inline int default_congestion_kb(void)
631{
632 int congestion_kb;
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652 congestion_kb = (16*int_sqrt(totalram_pages)) << (PAGE_SHIFT-10);
653 if (congestion_kb > 256*1024)
654 congestion_kb = 256*1024;
655
656 return congestion_kb;
657}
658
659
660
661
662struct ceph_snap_realm *ceph_lookup_snap_realm(struct ceph_mds_client *mdsc,
663 u64 ino);
664extern void ceph_get_snap_realm(struct ceph_mds_client *mdsc,
665 struct ceph_snap_realm *realm);
666extern void ceph_put_snap_realm(struct ceph_mds_client *mdsc,
667 struct ceph_snap_realm *realm);
668extern int ceph_update_snap_trace(struct ceph_mds_client *m,
669 void *p, void *e, bool deletion);
670extern void ceph_handle_snap(struct ceph_mds_client *mdsc,
671 struct ceph_mds_session *session,
672 struct ceph_msg *msg);
673extern void ceph_queue_cap_snap(struct ceph_inode_info *ci);
674extern int __ceph_finish_cap_snap(struct ceph_inode_info *ci,
675 struct ceph_cap_snap *capsnap);
676extern void ceph_cleanup_empty_realms(struct ceph_mds_client *mdsc);
677
678
679
680
681
682static inline bool __ceph_have_pending_cap_snap(struct ceph_inode_info *ci)
683{
684 return !list_empty(&ci->i_cap_snaps) &&
685 list_entry(ci->i_cap_snaps.prev, struct ceph_cap_snap,
686 ci_item)->writing;
687}
688
689
690extern const struct inode_operations ceph_file_iops;
691
692extern struct inode *ceph_alloc_inode(struct super_block *sb);
693extern void ceph_destroy_inode(struct inode *inode);
694extern int ceph_drop_inode(struct inode *inode);
695
696extern struct inode *ceph_get_inode(struct super_block *sb,
697 struct ceph_vino vino);
698extern struct inode *ceph_get_snapdir(struct inode *parent);
699extern int ceph_fill_file_size(struct inode *inode, int issued,
700 u32 truncate_seq, u64 truncate_size, u64 size);
701extern void ceph_fill_file_time(struct inode *inode, int issued,
702 u64 time_warp_seq, struct timespec *ctime,
703 struct timespec *mtime, struct timespec *atime);
704extern int ceph_fill_trace(struct super_block *sb,
705 struct ceph_mds_request *req,
706 struct ceph_mds_session *session);
707extern int ceph_readdir_prepopulate(struct ceph_mds_request *req,
708 struct ceph_mds_session *session);
709
710extern int ceph_inode_holds_cap(struct inode *inode, int mask);
711
712extern int ceph_inode_set_size(struct inode *inode, loff_t size);
713extern void __ceph_do_pending_vmtruncate(struct inode *inode);
714extern void ceph_queue_vmtruncate(struct inode *inode);
715
716extern void ceph_queue_invalidate(struct inode *inode);
717extern void ceph_queue_writeback(struct inode *inode);
718
719extern int ceph_do_getattr(struct inode *inode, int mask);
720extern int ceph_permission(struct inode *inode, int mask);
721extern int ceph_setattr(struct dentry *dentry, struct iattr *attr);
722extern int ceph_getattr(struct vfsmount *mnt, struct dentry *dentry,
723 struct kstat *stat);
724
725
726extern int ceph_setxattr(struct dentry *, const char *, const void *,
727 size_t, int);
728int __ceph_setxattr(struct dentry *, const char *, const void *, size_t, int);
729ssize_t __ceph_getxattr(struct inode *, const char *, void *, size_t);
730int __ceph_removexattr(struct dentry *, const char *);
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 struct xattr_handler *ceph_xattr_handlers[];
741
742#ifdef CONFIG_CEPH_FS_POSIX_ACL
743
744struct posix_acl *ceph_get_acl(struct inode *, int);
745int ceph_set_acl(struct inode *inode, struct posix_acl *acl, int type);
746int ceph_init_acl(struct dentry *, struct inode *, struct inode *);
747
748static inline void ceph_forget_all_cached_acls(struct inode *inode)
749{
750 forget_all_cached_acls(inode);
751}
752
753#else
754
755#define ceph_get_acl NULL
756#define ceph_set_acl NULL
757
758static inline int ceph_init_acl(struct dentry *dentry, struct inode *inode,
759 struct inode *dir)
760{
761 return 0;
762}
763
764static inline int ceph_acl_chmod(struct dentry *dentry, struct inode *inode)
765{
766 return 0;
767}
768
769static inline void ceph_forget_all_cached_acls(struct inode *inode)
770{
771}
772
773#endif
774
775
776extern const char *ceph_cap_string(int c);
777extern void ceph_handle_caps(struct ceph_mds_session *session,
778 struct ceph_msg *msg);
779extern int ceph_add_cap(struct inode *inode,
780 struct ceph_mds_session *session, u64 cap_id,
781 int fmode, unsigned issued, unsigned wanted,
782 unsigned cap, unsigned seq, u64 realmino, int flags,
783 struct ceph_cap_reservation *caps_reservation);
784extern void __ceph_remove_cap(struct ceph_cap *cap, bool queue_release);
785extern void ceph_put_cap(struct ceph_mds_client *mdsc,
786 struct ceph_cap *cap);
787extern int ceph_is_any_caps(struct inode *inode);
788
789extern void __queue_cap_release(struct ceph_mds_session *session, u64 ino,
790 u64 cap_id, u32 migrate_seq, u32 issue_seq);
791extern void ceph_queue_caps_release(struct inode *inode);
792extern int ceph_write_inode(struct inode *inode, struct writeback_control *wbc);
793extern int ceph_fsync(struct file *file, loff_t start, loff_t end,
794 int datasync);
795extern void ceph_kick_flushing_caps(struct ceph_mds_client *mdsc,
796 struct ceph_mds_session *session);
797extern struct ceph_cap *ceph_get_cap_for_mds(struct ceph_inode_info *ci,
798 int mds);
799extern int ceph_get_cap_mds(struct inode *inode);
800extern void ceph_get_cap_refs(struct ceph_inode_info *ci, int caps);
801extern void ceph_put_cap_refs(struct ceph_inode_info *ci, int had);
802extern void ceph_put_wrbuffer_cap_refs(struct ceph_inode_info *ci, int nr,
803 struct ceph_snap_context *snapc);
804extern void __ceph_flush_snaps(struct ceph_inode_info *ci,
805 struct ceph_mds_session **psession,
806 int again);
807extern void ceph_check_caps(struct ceph_inode_info *ci, int flags,
808 struct ceph_mds_session *session);
809extern void ceph_check_delayed_caps(struct ceph_mds_client *mdsc);
810extern void ceph_flush_dirty_caps(struct ceph_mds_client *mdsc);
811
812extern int ceph_encode_inode_release(void **p, struct inode *inode,
813 int mds, int drop, int unless, int force);
814extern int ceph_encode_dentry_release(void **p, struct dentry *dn,
815 int mds, int drop, int unless);
816
817extern int ceph_get_caps(struct ceph_inode_info *ci, int need, int want,
818 int *got, loff_t endoff);
819
820
821static inline void __ceph_get_fmode(struct ceph_inode_info *ci, int mode)
822{
823 ci->i_nr_by_mode[mode]++;
824}
825extern void ceph_put_fmode(struct ceph_inode_info *ci, int mode);
826
827
828extern const struct address_space_operations ceph_aops;
829extern int ceph_mmap(struct file *file, struct vm_area_struct *vma);
830
831
832extern const struct file_operations ceph_file_fops;
833extern const struct address_space_operations ceph_aops;
834
835extern int ceph_open(struct inode *inode, struct file *file);
836extern int ceph_atomic_open(struct inode *dir, struct dentry *dentry,
837 struct file *file, unsigned flags, umode_t mode,
838 int *opened);
839extern int ceph_release(struct inode *inode, struct file *filp);
840
841
842extern const struct file_operations ceph_dir_fops;
843extern const struct inode_operations ceph_dir_iops;
844extern const struct dentry_operations ceph_dentry_ops, ceph_snap_dentry_ops,
845 ceph_snapdir_dentry_ops;
846
847extern int ceph_handle_notrace_create(struct inode *dir, struct dentry *dentry);
848extern int ceph_handle_snapdir(struct ceph_mds_request *req,
849 struct dentry *dentry, int err);
850extern struct dentry *ceph_finish_lookup(struct ceph_mds_request *req,
851 struct dentry *dentry, int err);
852
853extern void ceph_dentry_lru_add(struct dentry *dn);
854extern void ceph_dentry_lru_touch(struct dentry *dn);
855extern void ceph_dentry_lru_del(struct dentry *dn);
856extern void ceph_invalidate_dentry_lease(struct dentry *dentry);
857extern unsigned ceph_dentry_hash(struct inode *dir, struct dentry *dn);
858extern struct inode *ceph_get_dentry_parent_inode(struct dentry *dentry);
859
860
861
862
863
864int ceph_init_dentry(struct dentry *dentry);
865
866
867
868extern long ceph_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
869
870
871extern const struct export_operations ceph_export_ops;
872
873
874extern int ceph_lock(struct file *file, int cmd, struct file_lock *fl);
875extern int ceph_flock(struct file *file, int cmd, struct file_lock *fl);
876extern void ceph_count_locks(struct inode *inode, int *p_num, int *f_num);
877extern int ceph_encode_locks_to_buffer(struct inode *inode,
878 struct ceph_filelock *flocks,
879 int num_fcntl_locks,
880 int num_flock_locks);
881extern int ceph_locks_to_pagelist(struct ceph_filelock *flocks,
882 struct ceph_pagelist *pagelist,
883 int num_fcntl_locks, int num_flock_locks);
884extern int lock_to_ceph_filelock(struct file_lock *fl, struct ceph_filelock *c);
885
886
887extern int ceph_fs_debugfs_init(struct ceph_fs_client *client);
888extern void ceph_fs_debugfs_cleanup(struct ceph_fs_client *client);
889
890#endif
891