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37#ifndef LLITE_INTERNAL_H
38#define LLITE_INTERNAL_H
39#include "../include/lustre_debug.h"
40#include "../include/lustre_ver.h"
41#include "../include/lustre_disk.h"
42#include "../include/lustre_eacl.h"
43
44
45#include "../include/cl_object.h"
46#include "../include/lclient.h"
47#include "../include/lustre_mdc.h"
48#include "../include/lustre_intent.h"
49#include <linux/compat.h>
50#include <linux/posix_acl_xattr.h>
51
52#ifndef FMODE_EXEC
53#define FMODE_EXEC 0
54#endif
55
56#ifndef VM_FAULT_RETRY
57#define VM_FAULT_RETRY 0
58#endif
59
60
61
62#ifndef LOOKUP_CONTINUE
63#define LOOKUP_CONTINUE LOOKUP_PARENT
64#endif
65
66
67#define LL_DIR_END_OFF 0x7fffffffffffffffULL
68#define LL_DIR_END_OFF_32BIT 0x7fffffffUL
69
70#define LL_IT2STR(it) ((it) ? ldlm_it2str((it)->it_op) : "0")
71#define LUSTRE_FPRIVATE(file) ((file)->private_data)
72
73struct ll_dentry_data {
74 struct lookup_intent *lld_it;
75 unsigned int lld_sa_generation;
76 unsigned int lld_invalid:1;
77 struct rcu_head lld_rcu_head;
78};
79
80#define ll_d2d(de) ((struct ll_dentry_data*)((de)->d_fsdata))
81
82#define LLI_INODE_MAGIC 0x111d0de5
83#define LLI_INODE_DEAD 0xdeadd00d
84
85
86#define REMOTE_PERM_HASHSIZE 16
87
88struct ll_getname_data {
89 struct dir_context ctx;
90 char *lgd_name;
91 struct lu_fid lgd_fid;
92 int lgd_found;
93};
94
95
96struct ll_remote_perm {
97 struct hlist_node lrp_list;
98 uid_t lrp_uid;
99 gid_t lrp_gid;
100 uid_t lrp_fsuid;
101 gid_t lrp_fsgid;
102 int lrp_access_perm;
103
104
105};
106
107enum lli_flags {
108
109 LLIF_MDS_SIZE_LOCK = (1 << 0),
110
111 LLIF_EPOCH_PENDING = (1 << 1),
112
113 LLIF_DONE_WRITING = (1 << 2),
114
115
116 LLIF_SOM_DIRTY = (1 << 3),
117
118 LLIF_DATA_MODIFIED = (1 << 4),
119
120 LLIF_FILE_RESTORING = (1 << 5),
121
122 LLIF_XATTR_CACHE = (1 << 6),
123};
124
125struct ll_inode_info {
126 __u32 lli_inode_magic;
127 __u32 lli_flags;
128 __u64 lli_ioepoch;
129
130 spinlock_t lli_lock;
131 struct posix_acl *lli_posix_acl;
132
133 struct hlist_head *lli_remote_perms;
134 struct mutex lli_rmtperm_mutex;
135
136
137 struct lu_fid lli_fid;
138
139
140 struct lu_fid lli_pfid;
141
142 struct list_head lli_close_list;
143 struct list_head lli_oss_capas;
144
145
146 atomic_t lli_open_count;
147 struct obd_capa *lli_mds_capa;
148 unsigned long lli_rmtperm_time;
149
150
151
152
153 struct obd_client_handle *lli_pending_och;
154
155
156
157 struct obd_client_handle *lli_mds_read_och;
158 struct obd_client_handle *lli_mds_write_och;
159 struct obd_client_handle *lli_mds_exec_och;
160 __u64 lli_open_fd_read_count;
161 __u64 lli_open_fd_write_count;
162 __u64 lli_open_fd_exec_count;
163
164 struct mutex lli_och_mutex;
165
166 struct inode lli_vfs_inode;
167
168
169 struct ost_lvb lli_lvb;
170 spinlock_t lli_agl_lock;
171
172
173
174 union {
175
176 struct {
177
178 struct mutex d_readdir_mutex;
179
180
181
182
183
184
185 void *d_opendir_key;
186 struct ll_statahead_info *d_sai;
187
188 spinlock_t d_sa_lock;
189
190
191 pid_t d_opendir_pid;
192 } d;
193
194#define lli_readdir_mutex u.d.d_readdir_mutex
195#define lli_opendir_key u.d.d_opendir_key
196#define lli_sai u.d.d_sai
197#define lli_sa_lock u.d.d_sa_lock
198#define lli_opendir_pid u.d.d_opendir_pid
199
200
201 struct {
202 struct mutex f_size_mutex;
203 char *f_symlink_name;
204 __u64 f_maxbytes;
205
206
207
208
209
210
211
212 struct rw_semaphore f_trunc_sem;
213 struct mutex f_write_mutex;
214
215 struct rw_semaphore f_glimpse_sem;
216 unsigned long f_glimpse_time;
217 struct list_head f_agl_list;
218 __u64 f_agl_index;
219
220
221 int f_async_rc;
222
223
224
225
226
227
228
229
230
231 char f_jobid[JOBSTATS_JOBID_SIZE];
232 } f;
233
234#define lli_size_mutex u.f.f_size_mutex
235#define lli_symlink_name u.f.f_symlink_name
236#define lli_maxbytes u.f.f_maxbytes
237#define lli_trunc_sem u.f.f_trunc_sem
238#define lli_write_mutex u.f.f_write_mutex
239#define lli_glimpse_sem u.f.f_glimpse_sem
240#define lli_glimpse_time u.f.f_glimpse_time
241#define lli_agl_list u.f.f_agl_list
242#define lli_agl_index u.f.f_agl_index
243#define lli_async_rc u.f.f_async_rc
244#define lli_jobid u.f.f_jobid
245
246 } u;
247
248
249
250
251
252
253
254
255
256
257
258 bool lli_has_smd;
259 struct cl_object *lli_clob;
260
261
262 struct mutex lli_layout_mutex;
263
264 __u32 lli_layout_gen;
265 spinlock_t lli_layout_lock;
266
267 struct rw_semaphore lli_xattrs_list_rwsem;
268 struct mutex lli_xattrs_enq_lock;
269 struct list_head lli_xattrs;
270};
271
272static inline __u32 ll_layout_version_get(struct ll_inode_info *lli)
273{
274 __u32 gen;
275
276 spin_lock(&lli->lli_layout_lock);
277 gen = lli->lli_layout_gen;
278 spin_unlock(&lli->lli_layout_lock);
279
280 return gen;
281}
282
283static inline void ll_layout_version_set(struct ll_inode_info *lli, __u32 gen)
284{
285 spin_lock(&lli->lli_layout_lock);
286 lli->lli_layout_gen = gen;
287 spin_unlock(&lli->lli_layout_lock);
288}
289
290int ll_xattr_cache_destroy(struct inode *inode);
291
292int ll_xattr_cache_get(struct inode *inode,
293 const char *name,
294 char *buffer,
295 size_t size,
296 __u64 valid);
297
298
299
300
301
302
303
304
305void ll_inode_size_lock(struct inode *inode);
306void ll_inode_size_unlock(struct inode *inode);
307
308
309
310static inline struct ll_inode_info *ll_i2info(struct inode *inode)
311{
312 return container_of(inode, struct ll_inode_info, lli_vfs_inode);
313}
314
315
316
317#define SBI_DEFAULT_READAHEAD_MAX (40UL << (20 - PAGE_CACHE_SHIFT))
318
319
320#define SBI_DEFAULT_READAHEAD_WHOLE_MAX (2UL << (20 - PAGE_CACHE_SHIFT))
321
322enum ra_stat {
323 RA_STAT_HIT = 0,
324 RA_STAT_MISS,
325 RA_STAT_DISTANT_READPAGE,
326 RA_STAT_MISS_IN_WINDOW,
327 RA_STAT_FAILED_GRAB_PAGE,
328 RA_STAT_FAILED_MATCH,
329 RA_STAT_DISCARDED,
330 RA_STAT_ZERO_LEN,
331 RA_STAT_ZERO_WINDOW,
332 RA_STAT_EOF,
333 RA_STAT_MAX_IN_FLIGHT,
334 RA_STAT_WRONG_GRAB_PAGE,
335 _NR_RA_STAT,
336};
337
338struct ll_ra_info {
339 atomic_t ra_cur_pages;
340 unsigned long ra_max_pages;
341 unsigned long ra_max_pages_per_file;
342 unsigned long ra_max_read_ahead_whole_pages;
343};
344
345
346
347
348
349
350struct ra_io_arg {
351 unsigned long ria_start;
352 unsigned long ria_end;
353
354
355
356 pgoff_t ria_stoff;
357
358
359
360 unsigned long ria_length;
361 unsigned long ria_pages;
362};
363
364
365#define LL_HIST_MAX 28
366#define LL_HIST_START 12
367#define LL_PROCESS_HIST_MAX 10
368struct per_process_info {
369 pid_t pid;
370 struct obd_histogram pp_r_hist;
371 struct obd_histogram pp_w_hist;
372};
373
374
375struct ll_rw_extents_info {
376 struct per_process_info pp_extents[LL_PROCESS_HIST_MAX + 1];
377};
378
379#define LL_OFFSET_HIST_MAX 100
380struct ll_rw_process_info {
381 pid_t rw_pid;
382 int rw_op;
383 loff_t rw_range_start;
384 loff_t rw_range_end;
385 loff_t rw_last_file_pos;
386 loff_t rw_offset;
387 size_t rw_smallest_extent;
388 size_t rw_largest_extent;
389 struct ll_file_data *rw_last_file;
390};
391
392enum stats_track_type {
393 STATS_TRACK_ALL = 0,
394 STATS_TRACK_PID,
395 STATS_TRACK_PPID,
396 STATS_TRACK_GID,
397 STATS_TRACK_LAST,
398};
399
400
401#define LL_SBI_NOLCK 0x01
402#define LL_SBI_CHECKSUM 0x02
403#define LL_SBI_FLOCK 0x04
404#define LL_SBI_USER_XATTR 0x08
405#define LL_SBI_ACL 0x10
406#define LL_SBI_RMT_CLIENT 0x40
407#define LL_SBI_MDS_CAPA 0x80
408#define LL_SBI_OSS_CAPA 0x100
409#define LL_SBI_LOCALFLOCK 0x200
410#define LL_SBI_LRU_RESIZE 0x400
411#define LL_SBI_LAZYSTATFS 0x800
412#define LL_SBI_SOM_PREVIEW 0x1000
413#define LL_SBI_32BIT_API 0x2000
414#define LL_SBI_64BIT_HASH 0x4000
415#define LL_SBI_AGL_ENABLED 0x8000
416#define LL_SBI_VERBOSE 0x10000
417#define LL_SBI_LAYOUT_LOCK 0x20000
418#define LL_SBI_USER_FID2PATH 0x40000
419#define LL_SBI_XATTR_CACHE 0x80000
420
421#define LL_SBI_FLAGS { \
422 "nolck", \
423 "checksum", \
424 "flock", \
425 "xattr", \
426 "acl", \
427 "???", \
428 "rmt_client", \
429 "mds_capa", \
430 "oss_capa", \
431 "flock", \
432 "lru_resize", \
433 "lazy_statfs", \
434 "som", \
435 "32bit_api", \
436 "64bit_hash", \
437 "agl", \
438 "verbose", \
439 "layout", \
440 "user_fid2path",\
441 "xattr", \
442}
443
444#define RCE_HASHES 32
445
446struct rmtacl_ctl_entry {
447 struct list_head rce_list;
448 pid_t rce_key;
449 int rce_ops;
450};
451
452struct rmtacl_ctl_table {
453 spinlock_t rct_lock;
454 struct list_head rct_entries[RCE_HASHES];
455};
456
457#define EE_HASHES 32
458
459struct eacl_table {
460 spinlock_t et_lock;
461 struct list_head et_entries[EE_HASHES];
462};
463
464struct ll_sb_info {
465 struct list_head ll_list;
466
467
468 spinlock_t ll_lock;
469 spinlock_t ll_pp_extent_lock;
470 spinlock_t ll_process_lock;
471 struct obd_uuid ll_sb_uuid;
472 struct obd_export *ll_md_exp;
473 struct obd_export *ll_dt_exp;
474 struct proc_dir_entry* ll_proc_root;
475 struct lu_fid ll_root_fid;
476
477 int ll_flags;
478 unsigned int ll_umounting:1,
479 ll_xattr_cache_enabled:1;
480 struct list_head ll_conn_chain;
481 struct lustre_client_ocd ll_lco;
482
483 struct list_head ll_orphan_dentry_list;
484 struct ll_close_queue *ll_lcq;
485
486 struct lprocfs_stats *ll_stats;
487
488 struct cl_client_cache ll_cache;
489
490 struct lprocfs_stats *ll_ra_stats;
491
492 struct ll_ra_info ll_ra_info;
493 unsigned int ll_namelen;
494 struct file_operations *ll_fop;
495
496
497
498 unsigned long ll_max_rw_chunk;
499 unsigned int ll_md_brw_size;
500
501 struct lu_site *ll_site;
502 struct cl_device *ll_cl;
503
504 struct ll_rw_extents_info ll_rw_extents_info;
505 int ll_extent_process_count;
506 struct ll_rw_process_info ll_rw_process_info[LL_PROCESS_HIST_MAX];
507 unsigned int ll_offset_process_count;
508 struct ll_rw_process_info ll_rw_offset_info[LL_OFFSET_HIST_MAX];
509 unsigned int ll_rw_offset_entry_count;
510 int ll_stats_track_id;
511 enum stats_track_type ll_stats_track_type;
512 int ll_rw_stats_on;
513
514
515 unsigned int ll_sa_max;
516 atomic_t ll_sa_total;
517
518 atomic_t ll_sa_wrong;
519
520 atomic_t ll_agl_total;
521
522 dev_t ll_sdev_orig;
523
524 struct rmtacl_ctl_table ll_rct;
525 struct eacl_table ll_et;
526 __kernel_fsid_t ll_fsid;
527};
528
529#define LL_DEFAULT_MAX_RW_CHUNK (32 * 1024 * 1024)
530
531struct ll_ra_read {
532 pgoff_t lrr_start;
533 pgoff_t lrr_count;
534 struct task_struct *lrr_reader;
535 struct list_head lrr_linkage;
536};
537
538
539
540
541struct ll_readahead_state {
542 spinlock_t ras_lock;
543
544
545
546
547
548
549
550 unsigned long ras_last_readpage;
551
552
553
554
555
556
557
558
559
560
561 unsigned long ras_consecutive_pages;
562
563
564
565
566
567 unsigned long ras_consecutive_requests;
568
569
570
571
572
573
574
575 unsigned long ras_window_start, ras_window_len;
576
577
578
579
580
581
582
583 unsigned long ras_next_readahead;
584
585
586
587
588
589 unsigned long ras_requests;
590
591
592
593
594 unsigned long ras_request_index;
595
596
597
598
599
600 struct list_head ras_read_beads;
601
602
603
604
605
606
607
608
609
610
611
612 unsigned long ras_stride_length;
613 unsigned long ras_stride_pages;
614 pgoff_t ras_stride_offset;
615
616
617
618
619
620
621 unsigned long ras_consecutive_stride_requests;
622};
623
624extern struct kmem_cache *ll_file_data_slab;
625struct lustre_handle;
626struct ll_file_data {
627 struct ll_readahead_state fd_ras;
628 struct ccc_grouplock fd_grouplock;
629 __u64 lfd_pos;
630 __u32 fd_flags;
631 fmode_t fd_omode;
632
633
634 struct obd_client_handle *fd_lease_och;
635 struct obd_client_handle *fd_och;
636 struct file *fd_file;
637
638
639
640 bool fd_write_failed;
641};
642
643struct lov_stripe_md;
644
645extern spinlock_t inode_lock;
646
647extern struct proc_dir_entry *proc_lustre_fs_root;
648
649static inline struct inode *ll_info2i(struct ll_inode_info *lli)
650{
651 return &lli->lli_vfs_inode;
652}
653
654__u32 ll_i2suppgid(struct inode *i);
655void ll_i2gids(__u32 *suppgids, struct inode *i1, struct inode *i2);
656
657static inline int ll_need_32bit_api(struct ll_sb_info *sbi)
658{
659#if BITS_PER_LONG == 32
660 return 1;
661#elif defined(CONFIG_COMPAT)
662 return unlikely(is_compat_task() || (sbi->ll_flags & LL_SBI_32BIT_API));
663#else
664 return unlikely(sbi->ll_flags & LL_SBI_32BIT_API);
665#endif
666}
667
668void ll_ra_read_in(struct file *f, struct ll_ra_read *rar);
669void ll_ra_read_ex(struct file *f, struct ll_ra_read *rar);
670struct ll_ra_read *ll_ra_read_get(struct file *f);
671
672
673#if defined (CONFIG_PROC_FS)
674int lprocfs_register_mountpoint(struct proc_dir_entry *parent,
675 struct super_block *sb, char *osc, char *mdc);
676void lprocfs_unregister_mountpoint(struct ll_sb_info *sbi);
677void ll_stats_ops_tally(struct ll_sb_info *sbi, int op, int count);
678void lprocfs_llite_init_vars(struct lprocfs_static_vars *lvars);
679void ll_rw_stats_tally(struct ll_sb_info *sbi, pid_t pid,
680 struct ll_file_data *file, loff_t pos,
681 size_t count, int rw);
682#else
683static inline int lprocfs_register_mountpoint(struct proc_dir_entry *parent,
684 struct super_block *sb, char *osc, char *mdc){return 0;}
685static inline void lprocfs_unregister_mountpoint(struct ll_sb_info *sbi) {}
686static inline
687void ll_stats_ops_tally(struct ll_sb_info *sbi, int op, int count) {}
688static inline void lprocfs_llite_init_vars(struct lprocfs_static_vars *lvars)
689{
690 memset(lvars, 0, sizeof(*lvars));
691}
692static inline void ll_rw_stats_tally(struct ll_sb_info *sbi, pid_t pid,
693 struct ll_file_data *file, loff_t pos,
694 size_t count, int rw) {}
695#endif
696
697
698
699void ll_release_page(struct page *page, int remove);
700extern const struct file_operations ll_dir_operations;
701extern const struct inode_operations ll_dir_inode_operations;
702struct page *ll_get_dir_page(struct inode *dir, __u64 hash,
703 struct ll_dir_chain *chain);
704int ll_dir_read(struct inode *inode, struct dir_context *ctx);
705
706int ll_get_mdt_idx(struct inode *inode);
707
708extern const struct inode_operations ll_special_inode_operations;
709
710int ll_objects_destroy(struct ptlrpc_request *request,
711 struct inode *dir);
712struct inode *ll_iget(struct super_block *sb, ino_t hash,
713 struct lustre_md *lic);
714int ll_md_blocking_ast(struct ldlm_lock *, struct ldlm_lock_desc *,
715 void *data, int flag);
716struct dentry *ll_splice_alias(struct inode *inode, struct dentry *de);
717int ll_rmdir_entry(struct inode *dir, char *name, int namelen);
718
719
720int ll_prepare_write(struct file *, struct page *, unsigned from, unsigned to);
721int ll_commit_write(struct file *, struct page *, unsigned from, unsigned to);
722int ll_writepage(struct page *page, struct writeback_control *wbc);
723int ll_writepages(struct address_space *, struct writeback_control *wbc);
724int ll_readpage(struct file *file, struct page *page);
725void ll_readahead_init(struct inode *inode, struct ll_readahead_state *ras);
726int ll_readahead(const struct lu_env *env, struct cl_io *io,
727 struct ll_readahead_state *ras, struct address_space *mapping,
728 struct cl_page_list *queue, int flags);
729
730#ifndef MS_HAS_NEW_AOPS
731extern const struct address_space_operations ll_aops;
732#else
733extern const struct address_space_operations_ext ll_aops;
734#endif
735
736
737extern struct file_operations ll_file_operations;
738extern struct file_operations ll_file_operations_flock;
739extern struct file_operations ll_file_operations_noflock;
740extern struct inode_operations ll_file_inode_operations;
741extern int ll_have_md_lock(struct inode *inode, __u64 *bits,
742 ldlm_mode_t l_req_mode);
743extern ldlm_mode_t ll_take_md_lock(struct inode *inode, __u64 bits,
744 struct lustre_handle *lockh, __u64 flags,
745 ldlm_mode_t mode);
746int ll_file_open(struct inode *inode, struct file *file);
747int ll_file_release(struct inode *inode, struct file *file);
748int ll_glimpse_ioctl(struct ll_sb_info *sbi,
749 struct lov_stripe_md *lsm, lstat_t *st);
750void ll_ioepoch_open(struct ll_inode_info *lli, __u64 ioepoch);
751int ll_release_openhandle(struct inode *, struct lookup_intent *);
752int ll_md_real_close(struct inode *inode, fmode_t fmode);
753void ll_ioepoch_close(struct inode *inode, struct md_op_data *op_data,
754 struct obd_client_handle **och, unsigned long flags);
755void ll_done_writing_attr(struct inode *inode, struct md_op_data *op_data);
756int ll_som_update(struct inode *inode, struct md_op_data *op_data);
757int ll_inode_getattr(struct inode *inode, struct obdo *obdo,
758 __u64 ioepoch, int sync);
759void ll_pack_inode2opdata(struct inode *inode, struct md_op_data *op_data,
760 struct lustre_handle *fh);
761int ll_getattr(struct vfsmount *mnt, struct dentry *de, struct kstat *stat);
762struct posix_acl *ll_get_acl(struct inode *inode, int type);
763
764int ll_inode_permission(struct inode *inode, int mask);
765
766int ll_lov_setstripe_ea_info(struct inode *inode, struct dentry *dentry,
767 int flags, struct lov_user_md *lum,
768 int lum_size);
769int ll_lov_getstripe_ea_info(struct inode *inode, const char *filename,
770 struct lov_mds_md **lmm, int *lmm_size,
771 struct ptlrpc_request **request);
772int ll_dir_setstripe(struct inode *inode, struct lov_user_md *lump,
773 int set_default);
774int ll_dir_getstripe(struct inode *inode, struct lov_mds_md **lmmp,
775 int *lmm_size, struct ptlrpc_request **request);
776int ll_fsync(struct file *file, loff_t start, loff_t end, int data);
777int ll_merge_lvb(const struct lu_env *env, struct inode *inode);
778int ll_fid2path(struct inode *inode, void __user *arg);
779int ll_data_version(struct inode *inode, __u64 *data_version, int extent_lock);
780int ll_hsm_release(struct inode *inode);
781
782
783
784int ll_d_init(struct dentry *de);
785extern const struct dentry_operations ll_d_ops;
786void ll_intent_drop_lock(struct lookup_intent *);
787void ll_intent_release(struct lookup_intent *);
788void ll_invalidate_aliases(struct inode *);
789void ll_lookup_finish_locks(struct lookup_intent *it, struct inode *inode);
790int ll_revalidate_it_finish(struct ptlrpc_request *request,
791 struct lookup_intent *it, struct inode *inode);
792
793
794extern struct super_operations lustre_super_operations;
795
796void ll_lli_init(struct ll_inode_info *lli);
797int ll_fill_super(struct super_block *sb, struct vfsmount *mnt);
798void ll_put_super(struct super_block *sb);
799void ll_kill_super(struct super_block *sb);
800struct inode *ll_inode_from_resource_lock(struct ldlm_lock *lock);
801void ll_clear_inode(struct inode *inode);
802int ll_setattr_raw(struct dentry *dentry, struct iattr *attr, bool hsm_import);
803int ll_setattr(struct dentry *de, struct iattr *attr);
804int ll_statfs(struct dentry *de, struct kstatfs *sfs);
805int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs,
806 __u64 max_age, __u32 flags);
807void ll_update_inode(struct inode *inode, struct lustre_md *md);
808void ll_read_inode2(struct inode *inode, void *opaque);
809void ll_delete_inode(struct inode *inode);
810int ll_iocontrol(struct inode *inode, struct file *file,
811 unsigned int cmd, unsigned long arg);
812int ll_flush_ctx(struct inode *inode);
813void ll_umount_begin(struct super_block *sb);
814int ll_remount_fs(struct super_block *sb, int *flags, char *data);
815int ll_show_options(struct seq_file *seq, struct dentry *dentry);
816void ll_dirty_page_discard_warn(struct page *page, int ioret);
817int ll_prep_inode(struct inode **inode, struct ptlrpc_request *req,
818 struct super_block *, struct lookup_intent *);
819int ll_obd_statfs(struct inode *inode, void *arg);
820int ll_get_max_mdsize(struct ll_sb_info *sbi, int *max_mdsize);
821int ll_get_default_mdsize(struct ll_sb_info *sbi, int *default_mdsize);
822int ll_get_max_cookiesize(struct ll_sb_info *sbi, int *max_cookiesize);
823int ll_get_default_cookiesize(struct ll_sb_info *sbi, int *default_cookiesize);
824int ll_process_config(struct lustre_cfg *lcfg);
825struct md_op_data *ll_prep_md_op_data(struct md_op_data *op_data,
826 struct inode *i1, struct inode *i2,
827 const char *name, int namelen,
828 int mode, __u32 opc, void *data);
829void ll_finish_md_op_data(struct md_op_data *op_data);
830int ll_get_obd_name(struct inode *inode, unsigned int cmd, unsigned long arg);
831char *ll_get_fsname(struct super_block *sb, char *buf, int buflen);
832
833
834extern struct export_operations lustre_export_operations;
835__u32 get_uuid2int(const char *name, int len);
836void get_uuid2fsid(const char *name, int len, __kernel_fsid_t *fsid);
837struct inode *search_inode_for_lustre(struct super_block *sb,
838 const struct lu_fid *fid);
839
840
841extern struct inode_operations ll_fast_symlink_inode_operations;
842
843
844struct ll_close_queue {
845 spinlock_t lcq_lock;
846 struct list_head lcq_head;
847 wait_queue_head_t lcq_waitq;
848 struct completion lcq_comp;
849 atomic_t lcq_stop;
850};
851
852struct ccc_object *cl_inode2ccc(struct inode *inode);
853
854
855void vvp_write_pending (struct ccc_object *club, struct ccc_page *page);
856void vvp_write_complete(struct ccc_object *club, struct ccc_page *page);
857
858
859enum vvp_io_subtype {
860
861 IO_NORMAL,
862
863 IO_SPLICE
864};
865
866
867struct vvp_io {
868
869 enum vvp_io_subtype cui_io_subtype;
870
871 union {
872 struct {
873 struct pipe_inode_info *cui_pipe;
874 unsigned int cui_flags;
875 } splice;
876 struct vvp_fault_io {
877
878
879
880
881 time_t ft_mtime;
882 struct vm_area_struct *ft_vma;
883
884
885
886 struct page *ft_vmpage;
887 struct vm_fault_api {
888
889
890
891 struct vm_fault *ft_vmf;
892
893
894
895 unsigned int ft_flags;
896
897
898
899 bool ft_flags_valid;
900 } fault;
901 } fault;
902 } u;
903
904
905
906 struct ll_ra_read cui_bead;
907
908
909
910 int cui_ra_window_set;
911};
912
913
914
915
916struct vvp_io_args {
917
918 enum vvp_io_subtype via_io_subtype;
919
920 union {
921 struct {
922 struct kiocb *via_iocb;
923 struct iov_iter *via_iter;
924 } normal;
925 struct {
926 struct pipe_inode_info *via_pipe;
927 unsigned int via_flags;
928 } splice;
929 } u;
930};
931
932struct ll_cl_context {
933 void *lcc_cookie;
934 struct cl_io *lcc_io;
935 struct cl_page *lcc_page;
936 struct lu_env *lcc_env;
937 int lcc_refcheck;
938};
939
940struct vvp_thread_info {
941 struct vvp_io_args vti_args;
942 struct ra_io_arg vti_ria;
943 struct ll_cl_context vti_io_ctx;
944};
945
946static inline struct vvp_thread_info *vvp_env_info(const struct lu_env *env)
947{
948 extern struct lu_context_key vvp_key;
949 struct vvp_thread_info *info;
950
951 info = lu_context_key_get(&env->le_ctx, &vvp_key);
952 LASSERT(info != NULL);
953 return info;
954}
955
956static inline struct vvp_io_args *vvp_env_args(const struct lu_env *env,
957 enum vvp_io_subtype type)
958{
959 struct vvp_io_args *ret = &vvp_env_info(env)->vti_args;
960
961 ret->via_io_subtype = type;
962
963 return ret;
964}
965
966struct vvp_session {
967 struct vvp_io vs_ios;
968};
969
970static inline struct vvp_session *vvp_env_session(const struct lu_env *env)
971{
972 extern struct lu_context_key vvp_session_key;
973 struct vvp_session *ses;
974
975 ses = lu_context_key_get(env->le_ses, &vvp_session_key);
976 LASSERT(ses != NULL);
977 return ses;
978}
979
980static inline struct vvp_io *vvp_env_io(const struct lu_env *env)
981{
982 return &vvp_env_session(env)->vs_ios;
983}
984
985int vvp_global_init(void);
986void vvp_global_fini(void);
987
988void ll_queue_done_writing(struct inode *inode, unsigned long flags);
989void ll_close_thread_shutdown(struct ll_close_queue *lcq);
990int ll_close_thread_start(struct ll_close_queue **lcq_ret);
991
992
993
994int ll_teardown_mmaps(struct address_space *mapping, __u64 first, __u64 last);
995int ll_file_mmap(struct file *file, struct vm_area_struct *vma);
996void policy_from_vma(ldlm_policy_data_t *policy,
997 struct vm_area_struct *vma, unsigned long addr, size_t count);
998struct vm_area_struct *our_vma(struct mm_struct *mm, unsigned long addr,
999 size_t count);
1000
1001static inline void ll_invalidate_page(struct page *vmpage)
1002{
1003 struct address_space *mapping = vmpage->mapping;
1004 loff_t offset = vmpage->index << PAGE_CACHE_SHIFT;
1005
1006 LASSERT(PageLocked(vmpage));
1007 if (mapping == NULL)
1008 return;
1009
1010 ll_teardown_mmaps(mapping, offset, offset + PAGE_CACHE_SIZE);
1011 truncate_complete_page(mapping, vmpage);
1012}
1013
1014#define ll_s2sbi(sb) (s2lsi(sb)->lsi_llsbi)
1015
1016
1017static inline struct obd_export *ll_s2dtexp(struct super_block *sb)
1018{
1019 return ll_s2sbi(sb)->ll_dt_exp;
1020}
1021
1022
1023static inline struct obd_export *ll_s2mdexp(struct super_block *sb)
1024{
1025 return ll_s2sbi(sb)->ll_md_exp;
1026}
1027
1028static inline struct client_obd *sbi2mdc(struct ll_sb_info *sbi)
1029{
1030 struct obd_device *obd = sbi->ll_md_exp->exp_obd;
1031 if (obd == NULL)
1032 LBUG();
1033 return &obd->u.cli;
1034}
1035
1036
1037static inline struct ll_sb_info *ll_i2sbi(struct inode *inode)
1038{
1039 return ll_s2sbi(inode->i_sb);
1040}
1041
1042static inline struct obd_export *ll_i2dtexp(struct inode *inode)
1043{
1044 return ll_s2dtexp(inode->i_sb);
1045}
1046
1047static inline struct obd_export *ll_i2mdexp(struct inode *inode)
1048{
1049 return ll_s2mdexp(inode->i_sb);
1050}
1051
1052static inline struct lu_fid *ll_inode2fid(struct inode *inode)
1053{
1054 struct lu_fid *fid;
1055
1056 LASSERT(inode != NULL);
1057 fid = &ll_i2info(inode)->lli_fid;
1058
1059 return fid;
1060}
1061
1062static inline __u64 ll_file_maxbytes(struct inode *inode)
1063{
1064 return ll_i2info(inode)->lli_maxbytes;
1065}
1066
1067
1068int ll_setxattr(struct dentry *dentry, const char *name,
1069 const void *value, size_t size, int flags);
1070ssize_t ll_getxattr(struct dentry *dentry, const char *name,
1071 void *buffer, size_t size);
1072ssize_t ll_listxattr(struct dentry *dentry, char *buffer, size_t size);
1073int ll_removexattr(struct dentry *dentry, const char *name);
1074
1075
1076extern struct kmem_cache *ll_remote_perm_cachep;
1077extern struct kmem_cache *ll_rmtperm_hash_cachep;
1078
1079void free_rmtperm_hash(struct hlist_head *hash);
1080int ll_update_remote_perm(struct inode *inode, struct mdt_remote_perm *perm);
1081int lustre_check_remote_perm(struct inode *inode, int mask);
1082
1083
1084extern struct timer_list ll_capa_timer;
1085
1086int ll_capa_thread_start(void);
1087void ll_capa_thread_stop(void);
1088void ll_capa_timer_callback(unsigned long unused);
1089
1090struct obd_capa *ll_add_capa(struct inode *inode, struct obd_capa *ocapa);
1091
1092void ll_capa_open(struct inode *inode);
1093void ll_capa_close(struct inode *inode);
1094
1095struct obd_capa *ll_mdscapa_get(struct inode *inode);
1096struct obd_capa *ll_osscapa_get(struct inode *inode, __u64 opc);
1097
1098void ll_truncate_free_capa(struct obd_capa *ocapa);
1099void ll_clear_inode_capas(struct inode *inode);
1100void ll_print_capa_stat(struct ll_sb_info *sbi);
1101
1102
1103extern struct lu_device_type vvp_device_type;
1104
1105
1106
1107
1108int cl_sb_init(struct super_block *sb);
1109int cl_sb_fini(struct super_block *sb);
1110void ll_io_init(struct cl_io *io, const struct file *file, int write);
1111
1112void ras_update(struct ll_sb_info *sbi, struct inode *inode,
1113 struct ll_readahead_state *ras, unsigned long index,
1114 unsigned hit);
1115void ll_ra_count_put(struct ll_sb_info *sbi, unsigned long len);
1116void ll_ra_stats_inc(struct address_space *mapping, enum ra_stat which);
1117
1118
1119#ifdef CONFIG_FS_POSIX_ACL
1120struct eacl_entry {
1121 struct list_head ee_list;
1122 pid_t ee_key;
1123 struct lu_fid ee_fid;
1124 int ee_type;
1125 ext_acl_xattr_header *ee_acl;
1126};
1127
1128u64 rce_ops2valid(int ops);
1129struct rmtacl_ctl_entry *rct_search(struct rmtacl_ctl_table *rct, pid_t key);
1130int rct_add(struct rmtacl_ctl_table *rct, pid_t key, int ops);
1131int rct_del(struct rmtacl_ctl_table *rct, pid_t key);
1132void rct_init(struct rmtacl_ctl_table *rct);
1133void rct_fini(struct rmtacl_ctl_table *rct);
1134
1135void ee_free(struct eacl_entry *ee);
1136int ee_add(struct eacl_table *et, pid_t key, struct lu_fid *fid, int type,
1137 ext_acl_xattr_header *header);
1138struct eacl_entry *et_search_del(struct eacl_table *et, pid_t key,
1139 struct lu_fid *fid, int type);
1140void et_search_free(struct eacl_table *et, pid_t key);
1141void et_init(struct eacl_table *et);
1142void et_fini(struct eacl_table *et);
1143#else
1144static inline u64 rce_ops2valid(int ops)
1145{
1146 return 0;
1147}
1148#endif
1149
1150
1151
1152#define LL_SA_RPC_MIN 2
1153#define LL_SA_RPC_DEF 32
1154#define LL_SA_RPC_MAX 8192
1155
1156#define LL_SA_CACHE_BIT 5
1157#define LL_SA_CACHE_SIZE (1 << LL_SA_CACHE_BIT)
1158#define LL_SA_CACHE_MASK (LL_SA_CACHE_SIZE - 1)
1159
1160
1161struct ll_statahead_info {
1162 struct inode *sai_inode;
1163 atomic_t sai_refcount;
1164
1165 unsigned int sai_generation;
1166 unsigned int sai_max;
1167 __u64 sai_sent;
1168 __u64 sai_replied;
1169
1170 __u64 sai_index;
1171 __u64 sai_index_wait;
1172
1173 __u64 sai_hit;
1174 __u64 sai_miss;
1175
1176
1177
1178
1179
1180
1181
1182 unsigned int sai_consecutive_miss;
1183 unsigned int sai_miss_hidden;
1184
1185 unsigned int sai_skip_hidden;
1186 unsigned int sai_ls_all:1,
1187
1188 sai_agl_valid:1;
1189 wait_queue_head_t sai_waitq;
1190 struct ptlrpc_thread sai_thread;
1191 struct ptlrpc_thread sai_agl_thread;
1192 struct list_head sai_entries;
1193 struct list_head sai_entries_received;
1194 struct list_head sai_entries_stated;
1195 struct list_head sai_entries_agl;
1196 struct list_head sai_cache[LL_SA_CACHE_SIZE];
1197 spinlock_t sai_cache_lock[LL_SA_CACHE_SIZE];
1198 atomic_t sai_cache_count;
1199};
1200
1201int do_statahead_enter(struct inode *dir, struct dentry **dentry,
1202 int only_unplug);
1203void ll_stop_statahead(struct inode *dir, void *key);
1204
1205static inline int ll_glimpse_size(struct inode *inode)
1206{
1207 struct ll_inode_info *lli = ll_i2info(inode);
1208 int rc;
1209
1210 down_read(&lli->lli_glimpse_sem);
1211 rc = cl_glimpse_size(inode);
1212 lli->lli_glimpse_time = cfs_time_current();
1213 up_read(&lli->lli_glimpse_sem);
1214 return rc;
1215}
1216
1217static inline void
1218ll_statahead_mark(struct inode *dir, struct dentry *dentry)
1219{
1220 struct ll_inode_info *lli = ll_i2info(dir);
1221 struct ll_statahead_info *sai = lli->lli_sai;
1222 struct ll_dentry_data *ldd = ll_d2d(dentry);
1223
1224
1225 if (lli->lli_opendir_pid != current_pid())
1226 return;
1227
1228 LASSERT(ldd != NULL);
1229 if (sai != NULL)
1230 ldd->lld_sa_generation = sai->sai_generation;
1231}
1232
1233static inline int
1234d_need_statahead(struct inode *dir, struct dentry *dentryp)
1235{
1236 struct ll_inode_info *lli;
1237 struct ll_dentry_data *ldd;
1238
1239 if (ll_i2sbi(dir)->ll_sa_max == 0)
1240 return -EAGAIN;
1241
1242 lli = ll_i2info(dir);
1243
1244 if (lli->lli_opendir_pid != current_pid())
1245 return -EAGAIN;
1246
1247
1248 if (lli->lli_opendir_key == NULL)
1249 return -EAGAIN;
1250
1251 ldd = ll_d2d(dentryp);
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267 if (ldd && lli->lli_sai &&
1268 ldd->lld_sa_generation == lli->lli_sai->sai_generation)
1269 return -EAGAIN;
1270
1271 return 1;
1272}
1273
1274static inline int
1275ll_statahead_enter(struct inode *dir, struct dentry **dentryp, int only_unplug)
1276{
1277 int ret;
1278
1279 ret = d_need_statahead(dir, *dentryp);
1280 if (ret <= 0)
1281 return ret;
1282
1283 return do_statahead_enter(dir, dentryp, only_unplug);
1284}
1285
1286
1287enum llioc_iter {
1288 LLIOC_CONT = 0,
1289 LLIOC_STOP
1290};
1291
1292#define LLIOC_MAX_CMD 256
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308typedef enum llioc_iter (*llioc_callback_t)(struct inode *inode,
1309 struct file *file, unsigned int cmd, unsigned long arg,
1310 void *magic, int *rcp);
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324void *ll_iocontrol_register(llioc_callback_t cb, int count, unsigned int *cmd);
1325void ll_iocontrol_unregister(void *magic);
1326
1327
1328
1329#define cl_inode_info ll_inode_info
1330#define cl_i2info(info) ll_i2info(info)
1331#define cl_inode_mode(inode) ((inode)->i_mode)
1332#define cl_i2sbi ll_i2sbi
1333
1334static inline struct ll_file_data *cl_iattr2fd(struct inode *inode,
1335 const struct iattr *attr)
1336{
1337 LASSERT(attr->ia_valid & ATTR_FILE);
1338 return LUSTRE_FPRIVATE(attr->ia_file);
1339}
1340
1341static inline void cl_isize_lock(struct inode *inode)
1342{
1343 ll_inode_size_lock(inode);
1344}
1345
1346static inline void cl_isize_unlock(struct inode *inode)
1347{
1348 ll_inode_size_unlock(inode);
1349}
1350
1351static inline void cl_isize_write_nolock(struct inode *inode, loff_t kms)
1352{
1353 LASSERT(mutex_is_locked(&ll_i2info(inode)->lli_size_mutex));
1354 i_size_write(inode, kms);
1355}
1356
1357static inline void cl_isize_write(struct inode *inode, loff_t kms)
1358{
1359 ll_inode_size_lock(inode);
1360 i_size_write(inode, kms);
1361 ll_inode_size_unlock(inode);
1362}
1363
1364#define cl_isize_read(inode) i_size_read(inode)
1365
1366static inline int cl_merge_lvb(const struct lu_env *env, struct inode *inode)
1367{
1368 return ll_merge_lvb(env, inode);
1369}
1370
1371#define cl_inode_atime(inode) LTIME_S((inode)->i_atime)
1372#define cl_inode_ctime(inode) LTIME_S((inode)->i_ctime)
1373#define cl_inode_mtime(inode) LTIME_S((inode)->i_mtime)
1374
1375struct obd_capa *cl_capa_lookup(struct inode *inode, enum cl_req_type crt);
1376
1377int cl_sync_file_range(struct inode *inode, loff_t start, loff_t end,
1378 enum cl_fsync_mode mode, int ignore_layout);
1379
1380
1381struct ll_dio_pages {
1382
1383
1384 struct page **ldp_pages;
1385
1386 loff_t *ldp_offsets;
1387
1388
1389
1390 loff_t ldp_start_offset;
1391
1392 size_t ldp_size;
1393
1394 int ldp_nr;
1395};
1396
1397static inline void cl_stats_tally(struct cl_device *dev, enum cl_req_type crt,
1398 int rc)
1399{
1400 int opc = (crt == CRT_READ) ? LPROC_LL_OSC_READ :
1401 LPROC_LL_OSC_WRITE;
1402
1403 ll_stats_ops_tally(ll_s2sbi(cl2ccc_dev(dev)->cdv_sb), opc, rc);
1404}
1405
1406extern ssize_t ll_direct_rw_pages(const struct lu_env *env, struct cl_io *io,
1407 int rw, struct inode *inode,
1408 struct ll_dio_pages *pv);
1409
1410static inline int ll_file_nolock(const struct file *file)
1411{
1412 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
1413 struct inode *inode = file_inode(file);
1414
1415 LASSERT(fd != NULL);
1416 return ((fd->fd_flags & LL_FILE_IGNORE_LOCK) ||
1417 (ll_i2sbi(inode)->ll_flags & LL_SBI_NOLCK));
1418}
1419
1420static inline void ll_set_lock_data(struct obd_export *exp, struct inode *inode,
1421 struct lookup_intent *it, __u64 *bits)
1422{
1423 if (!it->d.lustre.it_lock_set) {
1424 struct lustre_handle handle;
1425
1426
1427
1428
1429
1430
1431
1432
1433 if (it->d.lustre.it_remote_lock_mode) {
1434 handle.cookie = it->d.lustre.it_remote_lock_handle;
1435 CDEBUG(D_DLMTRACE, "setting l_data to inode %p(%lu/%u) for remote lock %#llx\n",
1436 inode,
1437 inode->i_ino, inode->i_generation,
1438 handle.cookie);
1439 md_set_lock_data(exp, &handle.cookie, inode, NULL);
1440 }
1441
1442 handle.cookie = it->d.lustre.it_lock_handle;
1443
1444 CDEBUG(D_DLMTRACE, "setting l_data to inode %p (%lu/%u) for lock %#llx\n",
1445 inode, inode->i_ino,
1446 inode->i_generation, handle.cookie);
1447
1448 md_set_lock_data(exp, &handle.cookie, inode,
1449 &it->d.lustre.it_lock_bits);
1450 it->d.lustre.it_lock_set = 1;
1451 }
1452
1453 if (bits != NULL)
1454 *bits = it->d.lustre.it_lock_bits;
1455}
1456
1457static inline void ll_lock_dcache(struct inode *inode)
1458{
1459 spin_lock(&inode->i_lock);
1460}
1461
1462static inline void ll_unlock_dcache(struct inode *inode)
1463{
1464 spin_unlock(&inode->i_lock);
1465}
1466
1467static inline int d_lustre_invalid(const struct dentry *dentry)
1468{
1469 struct ll_dentry_data *lld = ll_d2d(dentry);
1470
1471 return (lld == NULL) || lld->lld_invalid;
1472}
1473
1474static inline void __d_lustre_invalidate(struct dentry *dentry)
1475{
1476 struct ll_dentry_data *lld = ll_d2d(dentry);
1477
1478 if (lld != NULL)
1479 lld->lld_invalid = 1;
1480}
1481
1482
1483
1484
1485
1486
1487static inline void d_lustre_invalidate(struct dentry *dentry, int nested)
1488{
1489 CDEBUG(D_DENTRY, "invalidate dentry %pd (%p) parent %p inode %p refc %d\n",
1490 dentry, dentry,
1491 dentry->d_parent, d_inode(dentry), d_count(dentry));
1492
1493 spin_lock_nested(&dentry->d_lock,
1494 nested ? DENTRY_D_LOCK_NESTED : DENTRY_D_LOCK_NORMAL);
1495 __d_lustre_invalidate(dentry);
1496 if (d_count(dentry) == 0)
1497 __d_drop(dentry);
1498 spin_unlock(&dentry->d_lock);
1499}
1500
1501static inline void d_lustre_revalidate(struct dentry *dentry)
1502{
1503 spin_lock(&dentry->d_lock);
1504 LASSERT(ll_d2d(dentry) != NULL);
1505 ll_d2d(dentry)->lld_invalid = 0;
1506 spin_unlock(&dentry->d_lock);
1507}
1508
1509enum {
1510 LL_LAYOUT_GEN_NONE = ((__u32)-2),
1511 LL_LAYOUT_GEN_EMPTY = ((__u32)-1)
1512};
1513
1514int ll_layout_conf(struct inode *inode, const struct cl_object_conf *conf);
1515int ll_layout_refresh(struct inode *inode, __u32 *gen);
1516int ll_layout_restore(struct inode *inode);
1517
1518int ll_xattr_init(void);
1519void ll_xattr_fini(void);
1520
1521#endif
1522