1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
5 #ifndef LLITE_INTERNAL_H
6 #define LLITE_INTERNAL_H
8 # include <linux/lustre_acl.h>
10 #ifdef CONFIG_FS_POSIX_ACL
11 # include <linux/fs.h>
13 # include <linux/xattr_acl.h>
15 #ifdef HAVE_LINUX_POSIX_ACL_XATTR_H
16 # include <linux/posix_acl_xattr.h>
20 #include <lustre_debug.h>
21 #include <lustre_ver.h>
22 #include <lustre_disk.h> /* for s2sbi */
24 #define LL_IT2STR(it) ((it) ? ldlm_it2str((it)->it_op) : "0")
25 #define LUSTRE_FPRIVATE(file) ((file)->private_data)
27 #ifdef LUSTRE_KERNEL_VERSION
28 static inline struct lookup_intent *ll_nd2it(struct nameidata *nd)
30 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
38 struct ll_dentry_data {
41 struct obd_client_handle lld_cwd_och;
42 struct obd_client_handle lld_mnt_och;
43 #ifndef LUSTRE_KERNEL_VERSION
44 struct lookup_intent *lld_it;
48 #define ll_d2d(de) ((struct ll_dentry_data*) de->d_fsdata)
50 extern struct file_operations ll_pgcache_seq_fops;
52 #define LLI_INODE_MAGIC 0x111d0de5
53 #define LLI_INODE_DEAD 0xdeadd00d
55 /* remote client permission cache */
56 #define REMOTE_PERM_HASHSIZE 16
58 /* llite setxid/access permission for user on remote client */
59 struct ll_remote_perm {
60 struct hlist_node lrp_list;
65 int lrp_access_perm; /* MAY_READ/WRITE/EXEC, this
66 is access permission with
67 lrp_fsuid/lrp_fsgid. */
71 /* MDS has an authority for the Size-on-MDS attributes. */
72 LLIF_MDS_SIZE_LOCK = (1 << 0),
73 /* Epoch close is postponed. */
74 LLIF_EPOCH_PENDING = (1 << 1),
75 /* DONE WRITING is allowed. */
76 LLIF_DONE_WRITING = (1 << 2),
77 /* Sizeon-on-MDS attributes are changed. An attribute update needs to
79 LLIF_SOM_DIRTY = (1 << 3),
82 struct ll_inode_info {
84 struct semaphore lli_size_sem; /* protect open and change size */
85 void *lli_size_sem_owner;
86 struct semaphore lli_write_sem;
87 char *lli_symlink_name;
90 unsigned long lli_flags;
92 /* this lock protects posix_acl, pending_write_llaps, mmap_cnt */
94 struct list_head lli_pending_write_llaps;
95 struct list_head lli_close_list;
96 /* handle is to be sent to MDS later on done_writing and setattr.
97 * Open handle data are needed for the recovery to reconstruct
98 * the inode state on the MDS. XXX: recovery is not ready yet. */
99 struct obd_client_handle *lli_pending_och;
100 atomic_t lli_mmap_cnt;
102 /* for writepage() only to communicate to fsync */
105 struct posix_acl *lli_posix_acl;
107 /* remote permission hash */
108 struct hlist_head *lli_remote_perms;
109 unsigned long lli_rmtperm_utime;
110 struct semaphore lli_rmtperm_sem;
112 struct list_head lli_dead_list;
114 struct semaphore lli_och_sem; /* Protects access to och pointers
115 and their usage counters */
116 /* We need all three because every inode may be opened in different
118 struct obd_client_handle *lli_mds_read_och;
119 __u64 lli_open_fd_read_count;
120 struct obd_client_handle *lli_mds_write_och;
121 __u64 lli_open_fd_write_count;
122 struct obd_client_handle *lli_mds_exec_och;
123 __u64 lli_open_fd_exec_count;
125 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
126 struct inode lli_vfs_inode;
129 /* identifying fields for both metadata and data stacks. */
130 struct lu_fid lli_fid;
131 struct lov_stripe_md *lli_smd;
134 /* open count currently used by capability only, indicate whether
135 * capability needs renewal */
136 atomic_t lli_open_count;
137 struct obd_capa *lli_mds_capa;
138 struct list_head lli_oss_capas;
142 * Locking to guarantee consistency of non-atomic updates to long long i_size,
143 * consistency between file size and KMS, and consistency within
144 * ->lli_smd->lsm_oinfo[]'s.
146 * Implemented by ->lli_size_sem and ->lsm_sem, nested in that order.
149 void ll_inode_size_lock(struct inode *inode, int lock_lsm);
150 void ll_inode_size_unlock(struct inode *inode, int unlock_lsm);
152 // FIXME: replace the name of this with LL_I to conform to kernel stuff
153 // static inline struct ll_inode_info *LL_I(struct inode *inode)
154 static inline struct ll_inode_info *ll_i2info(struct inode *inode)
156 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
157 return container_of(inode, struct ll_inode_info, lli_vfs_inode);
159 CLASSERT(sizeof(inode->u) >= sizeof(struct ll_inode_info));
160 return (struct ll_inode_info *)&(inode->u.generic_ip);
164 /* default to about 40meg of readahead on a given system. That much tied
165 * up in 512k readahead requests serviced at 40ms each is about 1GB/s. */
166 #define SBI_DEFAULT_READAHEAD_MAX (40UL << (20 - CFS_PAGE_SHIFT))
168 /* default to read-ahead full files smaller than 2MB on the second read */
169 #define SBI_DEFAULT_READAHEAD_WHOLE_MAX (2UL << (20 - CFS_PAGE_SHIFT))
174 RA_STAT_DISTANT_READPAGE,
175 RA_STAT_MISS_IN_WINDOW,
176 RA_STAT_FAILED_GRAB_PAGE,
177 RA_STAT_FAILED_MATCH,
182 RA_STAT_MAX_IN_FLIGHT,
183 RA_STAT_WRONG_GRAB_PAGE,
188 unsigned long ra_cur_pages;
189 unsigned long ra_max_pages;
190 unsigned long ra_max_read_ahead_whole_pages;
191 unsigned long ra_stats[_NR_RA_STAT];
194 /* LL_HIST_MAX=32 causes an overflow */
195 #define LL_HIST_MAX 28
196 #define LL_HIST_START 12 /* buckets start at 2^12 = 4k */
197 #define LL_PROCESS_HIST_MAX 10
198 struct per_process_info {
200 struct obd_histogram pp_r_hist;
201 struct obd_histogram pp_w_hist;
204 /* pp_extents[LL_PROCESS_HIST_MAX] will hold the combined process info */
205 struct ll_rw_extents_info {
206 struct per_process_info pp_extents[LL_PROCESS_HIST_MAX + 1];
209 #define LL_OFFSET_HIST_MAX 100
210 struct ll_rw_process_info {
213 loff_t rw_range_start;
215 loff_t rw_last_file_pos;
217 size_t rw_smallest_extent;
218 size_t rw_largest_extent;
219 struct file *rw_last_file;
222 enum stats_track_type {
223 STATS_TRACK_ALL = 0, /* track all processes */
224 STATS_TRACK_PID, /* track process with this pid */
225 STATS_TRACK_PPID, /* track processes with this ppid */
226 STATS_TRACK_GID, /* track processes with this gid */
230 /* flags for sbi->ll_flags */
231 #define LL_SBI_NOLCK 0x01 /* DLM locking disabled (directio-only) */
232 #define LL_SBI_CHECKSUM 0x02 /* checksum each page as it's written */
233 #define LL_SBI_FLOCK 0x04
234 #define LL_SBI_USER_XATTR 0x08 /* support user xattr */
235 #define LL_SBI_ACL 0x10 /* support ACL */
236 #define LL_SBI_JOIN 0x20 /* support JOIN */
237 #define LL_SBI_RMT_CLIENT 0x40 /* remote client */
238 #define LL_SBI_MDS_CAPA 0x80 /* support mds capa */
239 #define LL_SBI_OSS_CAPA 0x100 /* support oss capa */
240 #define LL_SBI_LOCALFLOCK 0x200 /* Local flocks support by kernel */
243 struct list_head ll_list;
244 /* this protects pglist and ra_info. It isn't safe to
245 * grab from interrupt contexts */
247 spinlock_t ll_pp_extent_lock; /* Lock for pp_extent entries */
248 spinlock_t ll_process_lock; /* Lock for ll_rw_process_info */
249 struct obd_uuid ll_sb_uuid;
250 struct obd_export *ll_md_exp;
251 struct obd_export *ll_dt_exp;
252 struct proc_dir_entry* ll_proc_root;
253 struct lu_fid ll_root_fid; /* root object fid */
256 struct list_head ll_conn_chain; /* per-conn chain of SBs */
257 struct lustre_client_ocd ll_lco;
259 struct list_head ll_orphan_dentry_list; /*please don't ask -p*/
260 struct ll_close_queue *ll_lcq;
262 struct lprocfs_stats *ll_stats; /* lprocfs stats counter */
264 unsigned long ll_async_page_max;
265 unsigned long ll_async_page_count;
266 unsigned long ll_pglist_gen;
267 struct list_head ll_pglist; /* all pages (llap_pglist_item) */
269 struct ll_ra_info ll_ra_info;
270 unsigned int ll_namelen;
271 struct file_operations *ll_fop;
273 #ifdef HAVE_EXPORT___IGET
274 struct list_head ll_deathrow; /* inodes to be destroyed (b1443) */
275 spinlock_t ll_deathrow_lock;
277 /* =0 - hold lock over whole read/write
278 * >0 - max. chunk to be read/written w/o lock re-acquiring */
279 unsigned long ll_max_rw_chunk;
282 struct ll_rw_extents_info ll_rw_extents_info;
283 int ll_extent_process_count;
284 struct ll_rw_process_info ll_rw_process_info[LL_PROCESS_HIST_MAX];
285 unsigned int ll_offset_process_count;
286 struct ll_rw_process_info ll_rw_offset_info[LL_OFFSET_HIST_MAX];
287 unsigned int ll_rw_offset_entry_count;
288 enum stats_track_type ll_stats_track_type;
289 int ll_stats_track_id;
291 dev_t ll_sdev_orig; /* save s_dev before assign for clustred nfs*/
294 #define LL_DEFAULT_MAX_RW_CHUNK (32 * 1024 * 1024)
299 struct task_struct *lrr_reader;
300 struct list_head lrr_linkage;
304 * per file-descriptor read-ahead data.
306 struct ll_readahead_state {
309 * index of the last page that read(2) needed and that wasn't in the
310 * cache. Used by ras_update() to detect seeks.
312 * XXX nikita: if access seeks into cached region, Lustre doesn't see
315 unsigned long ras_last_readpage;
317 * number of pages read after last read-ahead window reset. As window
318 * is reset on each seek, this is effectively a number of consecutive
319 * accesses. Maybe ->ras_accessed_in_window is better name.
321 * XXX nikita: window is also reset (by ras_update()) when Lustre
322 * believes that memory pressure evicts read-ahead pages. In that
323 * case, it probably doesn't make sense to expand window to
324 * PTLRPC_MAX_BRW_PAGES on the third access.
326 unsigned long ras_consecutive_pages;
328 * number of read requests after the last read-ahead window reset
329 * As window is reset on each seek, this is effectively the number
330 * on consecutive read request and is used to trigger read-ahead.
332 unsigned long ras_consecutive_requests;
334 * Parameters of current read-ahead window. Handled by
335 * ras_update(). On the initial access to the file or after a seek,
336 * window is reset to 0. After 3 consecutive accesses, window is
337 * expanded to PTLRPC_MAX_BRW_PAGES. Afterwards, window is enlarged by
338 * PTLRPC_MAX_BRW_PAGES chunks up to ->ra_max_pages.
340 unsigned long ras_window_start, ras_window_len;
342 * Where next read-ahead should start at. This lies within read-ahead
343 * window. Read-ahead window is read in pieces rather than at once
344 * because: 1. lustre limits total number of pages under read-ahead by
345 * ->ra_max_pages (see ll_ra_count_get()), 2. client cannot read pages
346 * not covered by DLM lock.
348 unsigned long ras_next_readahead;
350 * Total number of ll_file_read requests issued, reads originating
351 * due to mmap are not counted in this total. This value is used to
352 * trigger full file read-ahead after multiple reads to a small file.
354 unsigned long ras_requests;
356 * Page index with respect to the current request, these value
357 * will not be accurate when dealing with reads issued via mmap.
359 unsigned long ras_request_index;
361 * list of struct ll_ra_read's one per read(2) call current in
362 * progress against this file descriptor. Used by read-ahead code,
363 * protected by ->ras_lock.
365 struct list_head ras_read_beads;
371 extern cfs_mem_cache_t *ll_file_data_slab;
372 struct lustre_handle;
373 struct ll_file_data {
374 struct ll_readahead_state fd_ras;
376 struct lustre_handle fd_cwlockh;
377 unsigned long fd_gid;
378 struct ll_file_dir fd_dir;
382 struct lov_stripe_md;
384 extern spinlock_t inode_lock;
386 extern struct proc_dir_entry *proc_lustre_fs_root;
388 static inline struct inode *ll_info2i(struct ll_inode_info *lli)
390 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
391 return &lli->lli_vfs_inode;
393 return list_entry(lli, struct inode, u.generic_ip);
398 struct inode *icbd_parent;
399 struct dentry **icbd_childp;
403 void ll_i2gids(__u32 *suppgids, struct inode *i1,struct inode *i2);
405 #define LLAP_MAGIC 98764321
407 extern cfs_mem_cache_t *ll_async_page_slab;
408 extern size_t ll_async_page_slab_size;
409 struct ll_async_page {
411 /* only trust these if the page lock is providing exclusion */
412 unsigned int llap_write_queued:1,
413 llap_defer_uptodate:1,
418 struct page *llap_page;
419 struct list_head llap_pending_write;
420 struct list_head llap_pglist_item;
421 /* checksum for paranoid I/O debugging */
426 * enumeration of llap_from_page() call-sites. Used to export statistics in
427 * /proc/fs/lustre/llite/fsN/dump_page_cache.
430 LLAP_ORIGIN_UNKNOWN = 0,
431 LLAP_ORIGIN_READPAGE,
432 LLAP_ORIGIN_READAHEAD,
433 LLAP_ORIGIN_COMMIT_WRITE,
434 LLAP_ORIGIN_WRITEPAGE,
435 LLAP_ORIGIN_REMOVEPAGE,
438 extern char *llap_origins[];
440 #ifdef HAVE_REGISTER_CACHE
441 #define ll_register_cache(cache) register_cache(cache)
442 #define ll_unregister_cache(cache) unregister_cache(cache)
444 #define ll_register_cache(cache) do {} while (0)
445 #define ll_unregister_cache(cache) do {} while (0)
448 void ll_ra_read_in(struct file *f, struct ll_ra_read *rar);
449 void ll_ra_read_ex(struct file *f, struct ll_ra_read *rar);
450 struct ll_ra_read *ll_ra_read_get(struct file *f);
452 /* llite/lproc_llite.c */
454 int lprocfs_register_mountpoint(struct proc_dir_entry *parent,
455 struct super_block *sb, char *osc, char *mdc);
456 void lprocfs_unregister_mountpoint(struct ll_sb_info *sbi);
457 void ll_stats_ops_tally(struct ll_sb_info *sbi, int op, int count);
459 static inline int lprocfs_register_mountpoint(struct proc_dir_entry *parent,
460 struct super_block *sb, char *osc, char *mdc){return 0;}
461 static inline void lprocfs_unregister_mountpoint(struct ll_sb_info *sbi) {}
462 static void ll_stats_ops_tally(struct ll_sb_info *sbi, int op, int count) {}
467 extern struct file_operations ll_dir_operations;
468 extern struct inode_operations ll_dir_inode_operations;
471 int ll_objects_destroy(struct ptlrpc_request *request, struct inode *dir);
472 struct inode *ll_iget(struct super_block *sb, ino_t hash,
473 struct lustre_md *lic);
474 struct dentry *ll_find_alias(struct inode *, struct dentry *);
475 int ll_md_blocking_ast(struct ldlm_lock *, struct ldlm_lock_desc *,
476 void *data, int flag);
477 #ifndef LUSTRE_KERNEL_VERSION
478 struct lookup_intent *ll_convert_intent(struct open_intent *oit,
483 int ll_prepare_write(struct file *, struct page *, unsigned from, unsigned to);
484 int ll_commit_write(struct file *, struct page *, unsigned from, unsigned to);
485 int ll_writepage(struct page *page);
486 void ll_inode_fill_obdo(struct inode *inode, int cmd, struct obdo *oa);
487 int ll_ap_completion(void *data, int cmd, struct obdo *oa, int rc);
488 int llap_shrink_cache(struct ll_sb_info *sbi, int shrink_fraction);
489 struct ll_async_page *llap_from_page(struct page *page, unsigned origin);
490 extern struct cache_definition ll_cache_definition;
491 void ll_removepage(struct page *page);
492 int ll_readpage(struct file *file, struct page *page);
493 struct ll_async_page *llap_cast_private(struct page *page);
494 void ll_readahead_init(struct inode *inode, struct ll_readahead_state *ras);
495 void ll_ra_accounting(struct ll_async_page *llap,struct address_space *mapping);
496 void ll_truncate(struct inode *inode);
497 int ll_sync_page_range(struct inode *, struct address_space *, loff_t, size_t);
500 extern struct file_operations ll_file_operations;
501 extern struct file_operations ll_file_operations_flock;
502 extern struct file_operations ll_file_operations_noflock;
503 extern struct inode_operations ll_file_inode_operations;
504 extern int ll_inode_revalidate_it(struct dentry *, struct lookup_intent *);
505 extern int ll_have_md_lock(struct inode *inode, __u64 bits);
506 int ll_extent_lock(struct ll_file_data *, struct inode *,
507 struct lov_stripe_md *, int mode, ldlm_policy_data_t *,
508 struct lustre_handle *, int ast_flags);
509 int ll_extent_unlock(struct ll_file_data *, struct inode *,
510 struct lov_stripe_md *, int mode, struct lustre_handle *);
511 int ll_file_open(struct inode *inode, struct file *file);
512 int ll_file_release(struct inode *inode, struct file *file);
513 int ll_lsm_getattr(struct obd_export *, struct lov_stripe_md *, struct obdo *);
514 int ll_local_size(struct inode *inode);
515 int ll_glimpse_ioctl(struct ll_sb_info *sbi,
516 struct lov_stripe_md *lsm, lstat_t *st);
517 int ll_glimpse_size(struct inode *inode, int ast_flags);
518 int ll_local_open(struct file *file,
519 struct lookup_intent *it, struct ll_file_data *fd,
520 struct obd_client_handle *och);
521 int ll_release_openhandle(struct dentry *, struct lookup_intent *);
522 int ll_md_close(struct obd_export *md_exp, struct inode *inode,
524 int ll_md_real_close(struct inode *inode, int flags);
525 void ll_epoch_close(struct inode *inode, struct md_op_data *op_data,
526 struct obd_client_handle **och, unsigned long flags);
527 int ll_sizeonmds_update(struct inode *inode, struct md_open_data *data,
528 struct lustre_handle *fh, __u64 ioepoch);
529 int ll_inode_getattr(struct inode *inode, struct obdo *obdo);
530 int ll_md_setattr(struct inode *inode, struct md_op_data *op_data,
531 struct md_open_data **mod);
532 void ll_pack_inode2opdata(struct inode *inode, struct md_op_data *op_data,
533 struct lustre_handle *fh);
534 extern void ll_rw_stats_tally(struct ll_sb_info *sbi, pid_t pid, struct file
535 *file, size_t count, int rw);
536 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
537 int ll_getattr_it(struct vfsmount *mnt, struct dentry *de,
538 struct lookup_intent *it, struct kstat *stat);
539 int ll_getattr(struct vfsmount *mnt, struct dentry *de, struct kstat *stat);
541 struct ll_file_data *ll_file_data_get(void);
542 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
543 int ll_inode_permission(struct inode *inode, int mask, struct nameidata *nd);
545 int ll_inode_permission(struct inode *inode, int mask);
547 int ll_lov_setstripe_ea_info(struct inode *inode, struct file *file,
548 int flags, struct lov_user_md *lum,
550 int ll_lov_getstripe_ea_info(struct inode *inode, const char *filename,
551 struct lov_mds_md **lmm, int *lmm_size,
552 struct ptlrpc_request **request);
553 int ll_dir_setstripe(struct inode *inode, struct lov_user_md *lump);
554 int ll_dir_getstripe(struct inode *inode, struct lov_mds_md **lmm,
555 int *lmm_size, struct ptlrpc_request **request);
558 void ll_intent_drop_lock(struct lookup_intent *);
559 void ll_intent_release(struct lookup_intent *);
560 int ll_drop_dentry(struct dentry *dentry);
561 extern void ll_set_dd(struct dentry *de);
562 int ll_drop_dentry(struct dentry *dentry);
563 void ll_unhash_aliases(struct inode *);
564 void ll_frob_intent(struct lookup_intent **itp, struct lookup_intent *deft);
565 void ll_lookup_finish_locks(struct lookup_intent *it, struct dentry *dentry);
566 int ll_dcompare(struct dentry *parent, struct qstr *d_name, struct qstr *name);
567 int ll_revalidate_it_finish(struct ptlrpc_request *request, int offset,
568 struct lookup_intent *it, struct dentry *de);
570 /* llite/llite_lib.c */
571 extern struct super_operations lustre_super_operations;
573 char *ll_read_opt(const char *opt, char *data);
574 void ll_lli_init(struct ll_inode_info *lli);
575 int ll_fill_super(struct super_block *sb);
576 void ll_put_super(struct super_block *sb);
577 void ll_kill_super(struct super_block *sb);
578 struct inode *ll_inode_from_lock(struct ldlm_lock *lock);
579 void ll_clear_inode(struct inode *inode);
580 int ll_setattr_raw(struct inode *inode, struct iattr *attr);
581 int ll_setattr(struct dentry *de, struct iattr *attr);
582 #ifndef HAVE_STATFS_DENTRY_PARAM
583 int ll_statfs(struct super_block *sb, struct kstatfs *sfs);
585 int ll_statfs(struct dentry *de, struct kstatfs *sfs);
587 int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs,
589 void ll_update_inode(struct inode *inode, struct lustre_md *md);
590 void ll_read_inode2(struct inode *inode, void *opaque);
591 void ll_delete_inode(struct inode *inode);
592 int ll_iocontrol(struct inode *inode, struct file *file,
593 unsigned int cmd, unsigned long arg);
594 int ll_flush_ctx(struct inode *inode);
595 #ifdef HAVE_UMOUNTBEGIN_VFSMOUNT
596 void ll_umount_begin(struct vfsmount *vfsmnt, int flags);
598 void ll_umount_begin(struct super_block *sb);
600 int ll_remount_fs(struct super_block *sb, int *flags, char *data);
601 int ll_prep_inode(struct inode **inode, struct ptlrpc_request *req,
602 int offset, struct super_block *);
603 void lustre_dump_dentry(struct dentry *, int recur);
604 void lustre_dump_inode(struct inode *);
605 struct ll_async_page *llite_pglist_next_llap(struct ll_sb_info *sbi,
606 struct list_head *list);
607 int ll_obd_statfs(struct inode *inode, void *arg);
608 int ll_get_max_mdsize(struct ll_sb_info *sbi, int *max_mdsize);
609 int ll_process_config(struct lustre_cfg *lcfg);
610 int ll_ioctl_getfacl(struct inode *inode, struct rmtacl_ioctl_data *ioc);
611 int ll_ioctl_setfacl(struct inode *inode, struct rmtacl_ioctl_data *ioc);
612 struct md_op_data *ll_prep_md_op_data(struct md_op_data *op_data,
613 struct inode *i1, struct inode *i2,
614 const char *name, int namelen,
615 int mode, __u32 opc, void *data);
616 void ll_finish_md_op_data(struct md_op_data *op_data);
618 /* llite/llite_nfs.c */
619 extern struct export_operations lustre_export_operations;
620 __u32 get_uuid2int(const char *name, int len);
621 struct dentry *ll_fh_to_dentry(struct super_block *sb, __u32 *data, int len,
622 int fhtype, int parent);
623 int ll_dentry_to_fh(struct dentry *, __u32 *datap, int *lenp, int need_parent);
625 /* llite/special.c */
626 extern struct inode_operations ll_special_inode_operations;
627 extern struct file_operations ll_special_chr_inode_fops;
628 extern struct file_operations ll_special_chr_file_fops;
629 extern struct file_operations ll_special_blk_inode_fops;
630 extern struct file_operations ll_special_fifo_inode_fops;
631 extern struct file_operations ll_special_fifo_file_fops;
632 extern struct file_operations ll_special_sock_inode_fops;
634 /* llite/symlink.c */
635 extern struct inode_operations ll_fast_symlink_inode_operations;
637 /* llite/llite_close.c */
638 struct ll_close_queue {
640 struct list_head lcq_head;
641 wait_queue_head_t lcq_waitq;
642 struct completion lcq_comp;
646 void llap_write_pending(struct inode *inode, struct ll_async_page *llap);
647 int llap_write_complete(struct inode *inode, struct ll_async_page *llap);
648 int ll_inode_dirty(struct inode *inode, unsigned long flags);
649 void ll_queue_done_writing(struct inode *inode, unsigned long flags);
650 void ll_close_thread_shutdown(struct ll_close_queue *lcq);
651 int ll_close_thread_start(struct ll_close_queue **lcq_ret);
653 /* llite/llite_mmap.c */
654 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
655 typedef struct rb_root rb_root_t;
656 typedef struct rb_node rb_node_t;
659 struct ll_lock_tree_node;
660 struct ll_lock_tree {
662 struct list_head lt_locked_list;
663 struct ll_file_data *lt_fd;
666 int ll_teardown_mmaps(struct address_space *mapping, __u64 first, __u64 last);
667 int ll_file_mmap(struct file * file, struct vm_area_struct * vma);
668 struct ll_lock_tree_node * ll_node_from_inode(struct inode *inode, __u64 start,
669 __u64 end, ldlm_mode_t mode);
670 int ll_tree_lock(struct ll_lock_tree *tree,
671 struct ll_lock_tree_node *first_node,
672 const char *buf, size_t count, int ast_flags);
673 int ll_tree_unlock(struct ll_lock_tree *tree);
675 #define ll_s2sbi(sb) (s2lsi(sb)->lsi_llsbi)
677 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
678 void __d_rehash(struct dentry * entry, int lock);
679 static inline __u64 ll_ts2u64(struct timespec *time)
681 __u64 t = time->tv_sec;
685 static inline __u64 ll_ts2u64(time_t *time)
691 /* don't need an addref as the sb_info should be holding one */
692 static inline struct obd_export *ll_s2dtexp(struct super_block *sb)
694 return ll_s2sbi(sb)->ll_dt_exp;
697 /* don't need an addref as the sb_info should be holding one */
698 static inline struct obd_export *ll_s2mdexp(struct super_block *sb)
700 return ll_s2sbi(sb)->ll_md_exp;
703 static inline struct client_obd *sbi2mdc(struct ll_sb_info *sbi)
705 struct obd_device *obd = sbi->ll_md_exp->exp_obd;
711 // FIXME: replace the name of this with LL_SB to conform to kernel stuff
712 static inline struct ll_sb_info *ll_i2sbi(struct inode *inode)
714 return ll_s2sbi(inode->i_sb);
717 static inline struct obd_export *ll_i2dtexp(struct inode *inode)
719 return ll_s2dtexp(inode->i_sb);
722 static inline struct obd_export *ll_i2mdexp(struct inode *inode)
724 return ll_s2mdexp(inode->i_sb);
727 static inline struct lu_fid *ll_inode2fid(struct inode *inode)
730 LASSERT(inode != NULL);
731 fid = &ll_i2info(inode)->lli_fid;
732 LASSERT(fid_is_igif(fid) || fid_ver(fid) == 0);
736 static inline int ll_mds_max_easize(struct super_block *sb)
738 return sbi2mdc(ll_s2sbi(sb))->cl_max_mds_easize;
741 static inline __u64 ll_file_maxbytes(struct inode *inode)
743 return ll_i2info(inode)->lli_maxbytes;
747 int ll_setxattr(struct dentry *dentry, const char *name,
748 const void *value, size_t size, int flags);
749 ssize_t ll_getxattr(struct dentry *dentry, const char *name,
750 void *buffer, size_t size);
751 ssize_t ll_listxattr(struct dentry *dentry, char *buffer, size_t size);
752 int ll_removexattr(struct dentry *dentry, const char *name);
754 /* llite/remote_perm.c */
755 extern cfs_mem_cache_t *ll_remote_perm_cachep;
756 extern cfs_mem_cache_t *ll_rmtperm_hash_cachep;
758 struct hlist_head *alloc_rmtperm_hash(void);
759 void free_rmtperm_hash(struct hlist_head *hash);
760 int ll_update_remote_perm(struct inode *inode, struct mdt_remote_perm *perm);
761 int lustre_check_remote_perm(struct inode *inode, int mask);
763 /* llite/llite_fid.c */
764 ino_t ll_fid_build_ino(struct ll_sb_info *sbi, struct lu_fid *fid);
766 /* llite/llite_capa.c */
767 extern cfs_timer_t ll_capa_timer;
769 int ll_capa_thread_start(void);
770 void ll_capa_thread_stop(void);
771 void ll_capa_timer_callback(unsigned long unused);
773 struct obd_capa *ll_add_capa(struct inode *inode, struct obd_capa *ocapa);
774 int ll_update_capa(struct obd_capa *ocapa, struct lustre_capa *capa);
776 void ll_capa_open(struct inode *inode);
777 void ll_capa_close(struct inode *inode);
779 struct obd_capa *ll_mdscapa_get(struct inode *inode);
780 struct obd_capa *ll_osscapa_get(struct inode *inode, __u64 opc);
782 void ll_truncate_free_capa(struct obd_capa *ocapa);
783 void ll_clear_inode_capas(struct inode *inode);
784 void ll_print_capa_stat(struct ll_sb_info *sbi);
786 #endif /* LLITE_INTERNAL_H */