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 /* If there is no FMODE_EXEC defined, make it to match nothing */
29 #define LL_IT2STR(it) ((it) ? ldlm_it2str((it)->it_op) : "0")
30 #define LUSTRE_FPRIVATE(file) ((file)->private_data)
32 #ifdef LUSTRE_KERNEL_VERSION
33 static inline struct lookup_intent *ll_nd2it(struct nameidata *nd)
35 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
43 struct ll_dentry_data {
46 struct obd_client_handle lld_cwd_och;
47 struct obd_client_handle lld_mnt_och;
48 #ifndef LUSTRE_KERNEL_VERSION
49 struct lookup_intent *lld_it;
53 #define ll_d2d(de) ((struct ll_dentry_data*) de->d_fsdata)
55 extern struct file_operations ll_pgcache_seq_fops;
57 #define LLI_INODE_MAGIC 0x111d0de5
58 #define LLI_INODE_DEAD 0xdeadd00d
60 /* remote client permission cache */
61 #define REMOTE_PERM_HASHSIZE 16
63 /* llite setxid/access permission for user on remote client */
64 struct ll_remote_perm {
65 struct hlist_node lrp_list;
70 int lrp_access_perm; /* MAY_READ/WRITE/EXEC, this
71 is access permission with
72 lrp_fsuid/lrp_fsgid. */
76 /* MDS has an authority for the Size-on-MDS attributes. */
77 LLIF_MDS_SIZE_LOCK = (1 << 0),
78 /* Epoch close is postponed. */
79 LLIF_EPOCH_PENDING = (1 << 1),
80 /* DONE WRITING is allowed. */
81 LLIF_DONE_WRITING = (1 << 2),
82 /* Sizeon-on-MDS attributes are changed. An attribute update needs to
84 LLIF_SOM_DIRTY = (1 << 3),
87 struct ll_inode_info {
89 struct semaphore lli_size_sem;
90 void *lli_size_sem_owner;
91 struct semaphore lli_open_sem;
92 struct semaphore lli_write_sem;
93 char *lli_symlink_name;
96 unsigned long lli_flags;
98 /* this lock protects posix_acl, pending_write_llaps, mmap_cnt */
100 struct list_head lli_pending_write_llaps;
101 struct list_head lli_close_list;
102 /* handle is to be sent to MDS later on done_writing and setattr.
103 * Open handle data are needed for the recovery to reconstruct
104 * the inode state on the MDS. XXX: recovery is not ready yet. */
105 struct obd_client_handle *lli_pending_och;
107 atomic_t lli_mmap_cnt;
109 /* for writepage() only to communicate to fsync */
112 struct posix_acl *lli_posix_acl;
114 /* remote permission hash */
115 struct hlist_head *lli_remote_perms;
116 unsigned long lli_rmtperm_utime;
117 struct semaphore lli_rmtperm_sem;
119 struct list_head lli_dead_list;
121 struct semaphore lli_och_sem; /* Protects access to och pointers
122 and their usage counters */
123 /* We need all three because every inode may be opened in different
125 struct obd_client_handle *lli_mds_read_och;
126 __u64 lli_open_fd_read_count;
127 struct obd_client_handle *lli_mds_write_och;
128 __u64 lli_open_fd_write_count;
129 struct obd_client_handle *lli_mds_exec_och;
130 __u64 lli_open_fd_exec_count;
132 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
133 struct inode lli_vfs_inode;
136 /* identifying fields for both metadata and data stacks. */
137 struct lu_fid lli_fid;
138 struct lov_stripe_md *lli_smd;
141 /* open count currently used by capability only, indicate whether
142 * capability needs renewal */
143 atomic_t lli_open_count;
144 struct obd_capa *lli_mds_capa;
145 struct list_head lli_oss_capas;
149 * Locking to guarantee consistency of non-atomic updates to long long i_size,
150 * consistency between file size and KMS, and consistency within
151 * ->lli_smd->lsm_oinfo[]'s.
153 * Implemented by ->lli_size_sem and ->lsm_sem, nested in that order.
156 void ll_inode_size_lock(struct inode *inode, int lock_lsm);
157 void ll_inode_size_unlock(struct inode *inode, int unlock_lsm);
159 // FIXME: replace the name of this with LL_I to conform to kernel stuff
160 // static inline struct ll_inode_info *LL_I(struct inode *inode)
161 static inline struct ll_inode_info *ll_i2info(struct inode *inode)
163 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
164 return container_of(inode, struct ll_inode_info, lli_vfs_inode);
166 return (struct ll_inode_info *)&(inode->u.generic_ip);
170 /* default to about 40meg of readahead on a given system. That much tied
171 * up in 512k readahead requests serviced at 40ms each is about 1GB/s. */
172 #define SBI_DEFAULT_READAHEAD_MAX (40UL << (20 - PAGE_CACHE_SHIFT))
174 /* default to read-ahead full files smaller than 2MB on the second read */
175 #define SBI_DEFAULT_READAHEAD_WHOLE_MAX (2UL << (20 - PAGE_CACHE_SHIFT))
180 RA_STAT_DISTANT_READPAGE,
181 RA_STAT_MISS_IN_WINDOW,
182 RA_STAT_FAILED_GRAB_PAGE,
183 RA_STAT_FAILED_MATCH,
188 RA_STAT_MAX_IN_FLIGHT,
189 RA_STAT_WRONG_GRAB_PAGE,
194 unsigned long ra_cur_pages;
195 unsigned long ra_max_pages;
196 unsigned long ra_max_read_ahead_whole_pages;
197 unsigned long ra_stats[_NR_RA_STAT];
200 /* LL_HIST_MAX=32 causes an overflow */
201 #define LL_HIST_MAX 28
202 #define LL_HIST_START 12 /* buckets start at 2^12 = 4k */
203 #define LL_PROCESS_HIST_MAX 10
204 struct per_process_info {
206 struct obd_histogram pp_r_hist;
207 struct obd_histogram pp_w_hist;
210 /* pp_extents[LL_PROCESS_HIST_MAX] will hold the combined process info */
211 struct ll_rw_extents_info {
212 struct per_process_info pp_extents[LL_PROCESS_HIST_MAX + 1];
215 #define LL_OFFSET_HIST_MAX 100
216 struct ll_rw_process_info {
219 loff_t rw_range_start;
221 loff_t rw_last_file_pos;
223 size_t rw_smallest_extent;
224 size_t rw_largest_extent;
225 struct file *rw_last_file;
228 /* flags for sbi->ll_flags */
229 #define LL_SBI_NOLCK 0x01 /* DLM locking disabled (directio-only) */
230 #define LL_SBI_CHECKSUM 0x02 /* checksum each page as it's written */
231 #define LL_SBI_FLOCK 0x04
232 #define LL_SBI_USER_XATTR 0x08 /* support user xattr */
233 #define LL_SBI_ACL 0x10 /* support ACL */
234 #define LL_SBI_JOIN 0x20 /* support JOIN */
235 #define LL_SBI_RMT_CLIENT 0x40 /* remote client */
236 #define LL_SBI_MDS_CAPA 0x80 /* support mds capa */
237 #define LL_SBI_OSS_CAPA 0x100 /* support oss capa */
240 struct list_head ll_list;
241 /* this protects pglist and ra_info. It isn't safe to
242 * grab from interrupt contexts */
244 struct obd_uuid ll_sb_uuid;
245 struct obd_export *ll_md_exp;
246 struct obd_export *ll_dt_exp;
247 struct proc_dir_entry* ll_proc_root;
248 struct lu_fid ll_root_fid; /* root object fid */
251 struct list_head ll_conn_chain; /* per-conn chain of SBs */
252 struct lustre_client_ocd ll_lco;
254 struct list_head ll_orphan_dentry_list; /*please don't ask -p*/
255 struct ll_close_queue *ll_lcq;
257 struct lprocfs_stats *ll_stats; /* lprocfs stats counter */
259 unsigned long ll_async_page_max;
260 unsigned long ll_async_page_count;
261 unsigned long ll_pglist_gen;
262 struct list_head ll_pglist; /* all pages (llap_pglist_item) */
264 struct ll_ra_info ll_ra_info;
265 unsigned int ll_namelen;
266 struct file_operations *ll_fop;
268 struct list_head ll_deathrow; /* inodes to be destroyed (b1443) */
269 spinlock_t ll_deathrow_lock;
270 /* =0 - hold lock over whole read/write
271 * >0 - max. chunk to be read/written w/o lock re-acquiring */
272 unsigned long ll_max_rw_chunk;
273 struct ll_rw_extents_info ll_rw_extents_info;
274 int ll_extent_process_count;
275 struct ll_rw_process_info ll_rw_process_info[LL_PROCESS_HIST_MAX];
276 unsigned int ll_offset_process_count;
277 struct ll_rw_process_info ll_rw_offset_info[LL_OFFSET_HIST_MAX];
278 unsigned int ll_rw_offset_entry_count;
281 #define LL_DEFAULT_MAX_RW_CHUNK (32 * 1024 * 1024)
286 struct task_struct *lrr_reader;
287 struct list_head lrr_linkage;
291 * per file-descriptor read-ahead data.
293 struct ll_readahead_state {
296 * index of the last page that read(2) needed and that wasn't in the
297 * cache. Used by ras_update() to detect seeks.
299 * XXX nikita: if access seeks into cached region, Lustre doesn't see
302 unsigned long ras_last_readpage;
304 * number of pages read after last read-ahead window reset. As window
305 * is reset on each seek, this is effectively a number of consecutive
306 * accesses. Maybe ->ras_accessed_in_window is better name.
308 * XXX nikita: window is also reset (by ras_update()) when Lustre
309 * believes that memory pressure evicts read-ahead pages. In that
310 * case, it probably doesn't make sense to expand window to
311 * PTLRPC_MAX_BRW_PAGES on the third access.
313 unsigned long ras_consecutive_pages;
315 * number of read requests after the last read-ahead window reset
316 * As window is reset on each seek, this is effectively the number
317 * on consecutive read request and is used to trigger read-ahead.
319 unsigned long ras_consecutive_requests;
321 * Parameters of current read-ahead window. Handled by
322 * ras_update(). On the initial access to the file or after a seek,
323 * window is reset to 0. After 3 consecutive accesses, window is
324 * expanded to PTLRPC_MAX_BRW_PAGES. Afterwards, window is enlarged by
325 * PTLRPC_MAX_BRW_PAGES chunks up to ->ra_max_pages.
327 unsigned long ras_window_start, ras_window_len;
329 * Where next read-ahead should start at. This lies within read-ahead
330 * window. Read-ahead window is read in pieces rather than at once
331 * because: 1. lustre limits total number of pages under read-ahead by
332 * ->ra_max_pages (see ll_ra_count_get()), 2. client cannot read pages
333 * not covered by DLM lock.
335 unsigned long ras_next_readahead;
337 * Total number of ll_file_read requests issued, reads originating
338 * due to mmap are not counted in this total. This value is used to
339 * trigger full file read-ahead after multiple reads to a small file.
341 unsigned long ras_requests;
343 * Page index with respect to the current request, these value
344 * will not be accurate when dealing with reads issued via mmap.
346 unsigned long ras_request_index;
348 * list of struct ll_ra_read's one per read(2) call current in
349 * progress against this file descriptor. Used by read-ahead code,
350 * protected by ->ras_lock.
352 struct list_head ras_read_beads;
358 extern kmem_cache_t *ll_file_data_slab;
359 struct lustre_handle;
360 struct ll_file_data {
361 struct ll_readahead_state fd_ras;
363 struct lustre_handle fd_cwlockh;
364 unsigned long fd_gid;
365 struct ll_file_dir fd_dir;
369 struct lov_stripe_md;
371 extern spinlock_t inode_lock;
373 extern struct proc_dir_entry *proc_lustre_fs_root;
375 static inline struct inode *ll_info2i(struct ll_inode_info *lli)
377 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
378 return &lli->lli_vfs_inode;
380 return list_entry(lli, struct inode, u.generic_ip);
385 struct inode *icbd_parent;
386 struct dentry **icbd_childp;
390 void ll_i2gids(__u32 *suppgids, struct inode *i1,struct inode *i2);
392 #define LLAP_MAGIC 98764321
394 extern kmem_cache_t *ll_async_page_slab;
395 extern size_t ll_async_page_slab_size;
396 struct ll_async_page {
398 /* only trust these if the page lock is providing exclusion */
399 unsigned int llap_write_queued:1,
400 llap_defer_uptodate:1,
405 struct page *llap_page;
406 struct list_head llap_pending_write;
407 struct list_head llap_pglist_item;
408 /* checksum for paranoid I/O debugging */
413 * enumeration of llap_from_page() call-sites. Used to export statistics in
414 * /proc/fs/lustre/llite/fsN/dump_page_cache.
417 LLAP_ORIGIN_UNKNOWN = 0,
418 LLAP_ORIGIN_READPAGE,
419 LLAP_ORIGIN_READAHEAD,
420 LLAP_ORIGIN_COMMIT_WRITE,
421 LLAP_ORIGIN_WRITEPAGE,
422 LLAP_ORIGIN_REMOVEPAGE,
425 extern char *llap_origins[];
427 #ifdef HAVE_REGISTER_CACHE
428 #define ll_register_cache(cache) register_cache(cache)
429 #define ll_unregister_cache(cache) unregister_cache(cache)
431 #define ll_register_cache(cache) do {} while (0)
432 #define ll_unregister_cache(cache) do {} while (0)
435 void ll_ra_read_in(struct file *f, struct ll_ra_read *rar);
436 void ll_ra_read_ex(struct file *f, struct ll_ra_read *rar);
437 struct ll_ra_read *ll_ra_read_get(struct file *f);
439 /* llite/lproc_llite.c */
441 int lprocfs_register_mountpoint(struct proc_dir_entry *parent,
442 struct super_block *sb, char *osc, char *mdc);
443 void lprocfs_unregister_mountpoint(struct ll_sb_info *sbi);
445 static inline int lprocfs_register_mountpoint(struct proc_dir_entry *parent,
446 struct super_block *sb, char *osc, char *mdc){return 0;}
447 static inline void lprocfs_unregister_mountpoint(struct ll_sb_info *sbi) {}
452 extern struct file_operations ll_dir_operations;
453 extern struct inode_operations ll_dir_inode_operations;
456 int ll_objects_destroy(struct ptlrpc_request *request, struct inode *dir);
457 struct inode *ll_iget(struct super_block *sb, ino_t hash,
458 struct lustre_md *lic);
459 struct dentry *ll_find_alias(struct inode *, struct dentry *);
460 int ll_md_blocking_ast(struct ldlm_lock *, struct ldlm_lock_desc *,
461 void *data, int flag);
462 int ll_md_cancel_unused(struct lustre_handle *, struct inode *, int flags,
464 #ifndef LUSTRE_KERNEL_VERSION
465 struct lookup_intent *ll_convert_intent(struct open_intent *oit,
470 int ll_prepare_write(struct file *, struct page *, unsigned from, unsigned to);
471 int ll_commit_write(struct file *, struct page *, unsigned from, unsigned to);
472 int ll_writepage(struct page *page);
473 void ll_inode_fill_obdo(struct inode *inode, int cmd, struct obdo *oa);
474 int ll_ap_completion(void *data, int cmd, struct obdo *oa, int rc);
475 int llap_shrink_cache(struct ll_sb_info *sbi, int shrink_fraction);
476 struct ll_async_page *llap_from_page(struct page *page, unsigned origin);
477 extern struct cache_definition ll_cache_definition;
478 void ll_removepage(struct page *page);
479 int ll_readpage(struct file *file, struct page *page);
480 struct ll_async_page *llap_from_cookie(void *cookie);
481 struct ll_async_page *llap_cast_private(struct page *page);
482 void ll_readahead_init(struct inode *inode, struct ll_readahead_state *ras);
483 void ll_ra_accounting(struct ll_async_page *llap,struct address_space *mapping);
484 void ll_truncate(struct inode *inode);
487 extern struct file_operations ll_file_operations;
488 extern struct file_operations ll_file_operations_flock;
489 extern struct inode_operations ll_file_inode_operations;
490 extern int ll_inode_revalidate_it(struct dentry *, struct lookup_intent *);
491 extern int ll_have_md_lock(struct inode *inode, __u64 bits);
492 int ll_extent_lock(struct ll_file_data *, struct inode *,
493 struct lov_stripe_md *, int mode, ldlm_policy_data_t *,
494 struct lustre_handle *, int ast_flags);
495 int ll_extent_unlock(struct ll_file_data *, struct inode *,
496 struct lov_stripe_md *, int mode, struct lustre_handle *);
497 int ll_file_open(struct inode *inode, struct file *file);
498 int ll_file_release(struct inode *inode, struct file *file);
499 int ll_lsm_getattr(struct obd_export *, struct lov_stripe_md *, struct obdo *);
500 int ll_local_size(struct inode *inode);
501 int ll_glimpse_ioctl(struct ll_sb_info *sbi,
502 struct lov_stripe_md *lsm, lstat_t *st);
503 int ll_glimpse_size(struct inode *inode, int ast_flags);
504 int ll_local_open(struct file *file,
505 struct lookup_intent *it, struct ll_file_data *fd,
506 struct obd_client_handle *och);
507 int ll_release_openhandle(struct dentry *, struct lookup_intent *);
508 int ll_md_close(struct obd_export *md_exp, struct inode *inode,
510 int ll_md_real_close(struct inode *inode, int flags);
511 void ll_epoch_close(struct inode *inode, struct md_op_data *op_data,
512 struct obd_client_handle **och, unsigned long flags);
513 int ll_sizeonmds_update(struct inode *inode, struct lustre_handle *fh);
514 int ll_inode_getattr(struct inode *inode, struct obdo *obdo);
515 int ll_md_setattr(struct inode *inode, struct md_op_data *op_data);
516 void ll_pack_inode2opdata(struct inode *inode, struct md_op_data *op_data,
517 struct lustre_handle *fh);
518 extern void ll_rw_stats_tally(struct ll_sb_info *sbi, pid_t pid, struct file
519 *file, size_t count, int rw);
520 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
521 int ll_getattr_it(struct vfsmount *mnt, struct dentry *de,
522 struct lookup_intent *it, struct kstat *stat);
523 int ll_getattr(struct vfsmount *mnt, struct dentry *de, struct kstat *stat);
525 struct ll_file_data *ll_file_data_get(void);
526 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
527 int ll_inode_permission(struct inode *inode, int mask, struct nameidata *nd);
529 int ll_inode_permission(struct inode *inode, int mask);
533 void ll_intent_drop_lock(struct lookup_intent *);
534 void ll_intent_release(struct lookup_intent *);
535 int ll_drop_dentry(struct dentry *dentry);
536 extern void ll_set_dd(struct dentry *de);
537 int ll_drop_dentry(struct dentry *dentry);
538 void ll_unhash_aliases(struct inode *);
539 void ll_frob_intent(struct lookup_intent **itp, struct lookup_intent *deft);
540 void ll_lookup_finish_locks(struct lookup_intent *it, struct dentry *dentry);
541 int ll_dcompare(struct dentry *parent, struct qstr *d_name, struct qstr *name);
542 int ll_revalidate_it_finish(struct ptlrpc_request *request, int offset,
543 struct lookup_intent *it, struct dentry *de);
545 /* llite/llite_lib.c */
546 extern struct super_operations lustre_super_operations;
548 char *ll_read_opt(const char *opt, char *data);
549 void ll_lli_init(struct ll_inode_info *lli);
550 int ll_fill_super(struct super_block *sb);
551 void ll_put_super(struct super_block *sb);
552 struct inode *ll_inode_from_lock(struct ldlm_lock *lock);
553 void ll_clear_inode(struct inode *inode);
554 int ll_setattr_raw(struct inode *inode, struct iattr *attr);
555 int ll_setattr(struct dentry *de, struct iattr *attr);
556 int ll_statfs(struct super_block *sb, struct kstatfs *sfs);
557 int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs,
559 void ll_update_inode(struct inode *inode, struct lustre_md *md);
560 void ll_read_inode2(struct inode *inode, void *opaque);
561 void ll_delete_inode(struct inode *inode);
562 int ll_iocontrol(struct inode *inode, struct file *file,
563 unsigned int cmd, unsigned long arg);
564 int ll_flush_ctx(struct inode *inode);
565 void ll_umount_begin(struct super_block *sb);
566 int ll_remount_fs(struct super_block *sb, int *flags, char *data);
567 int ll_prep_inode(struct inode **inode, struct ptlrpc_request *req,
568 int offset, struct super_block *);
569 void lustre_dump_dentry(struct dentry *, int recur);
570 void lustre_dump_inode(struct inode *);
571 struct ll_async_page *llite_pglist_next_llap(struct ll_sb_info *sbi,
572 struct list_head *list);
573 int ll_obd_statfs(struct inode *inode, void *arg);
574 int ll_get_max_mdsize(struct ll_sb_info *sbi, int *max_mdsize);
575 int ll_process_config(struct lustre_cfg *lcfg);
576 int ll_ioctl_getfacl(struct inode *inode, struct rmtacl_ioctl_data *ioc);
577 int ll_ioctl_setfacl(struct inode *inode, struct rmtacl_ioctl_data *ioc);
578 struct md_op_data *ll_prep_md_op_data(struct md_op_data *op_data,
579 struct inode *i1, struct inode *i2,
580 const char *name, int namelen,
582 void ll_finish_md_op_data(struct md_op_data *op_data);
584 /* llite/llite_nfs.c */
585 extern struct export_operations lustre_export_operations;
586 __u32 get_uuid2int(const char *name, int len);
587 struct dentry *ll_fh_to_dentry(struct super_block *sb, __u32 *data, int len,
588 int fhtype, int parent);
589 int ll_dentry_to_fh(struct dentry *, __u32 *datap, int *lenp, int need_parent);
591 /* llite/special.c */
592 extern struct inode_operations ll_special_inode_operations;
593 extern struct file_operations ll_special_chr_inode_fops;
594 extern struct file_operations ll_special_chr_file_fops;
595 extern struct file_operations ll_special_blk_inode_fops;
596 extern struct file_operations ll_special_fifo_inode_fops;
597 extern struct file_operations ll_special_fifo_file_fops;
598 extern struct file_operations ll_special_sock_inode_fops;
600 /* llite/symlink.c */
601 extern struct inode_operations ll_fast_symlink_inode_operations;
603 /* llite/llite_close.c */
604 struct ll_close_queue {
606 struct list_head lcq_head;
607 wait_queue_head_t lcq_waitq;
608 struct completion lcq_comp;
612 void llap_write_pending(struct inode *inode, struct ll_async_page *llap);
613 int llap_write_complete(struct inode *inode, struct ll_async_page *llap);
614 int ll_inode_dirty(struct inode *inode, unsigned long flags);
615 void ll_queue_done_writing(struct inode *inode, unsigned long flags);
616 void ll_close_thread_shutdown(struct ll_close_queue *lcq);
617 int ll_close_thread_start(struct ll_close_queue **lcq_ret);
619 /* llite/llite_mmap.c */
620 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
621 typedef struct rb_root rb_root_t;
622 typedef struct rb_node rb_node_t;
625 struct ll_lock_tree_node;
626 struct ll_lock_tree {
628 struct list_head lt_locked_list;
629 struct ll_file_data *lt_fd;
632 int ll_teardown_mmaps(struct address_space *mapping, __u64 first, __u64 last);
633 int ll_file_mmap(struct file * file, struct vm_area_struct * vma);
634 struct ll_lock_tree_node * ll_node_from_inode(struct inode *inode, __u64 start,
635 __u64 end, ldlm_mode_t mode);
636 int ll_tree_lock(struct ll_lock_tree *tree,
637 struct ll_lock_tree_node *first_node,
638 const char *buf, size_t count, int ast_flags);
639 int ll_tree_unlock(struct ll_lock_tree *tree);
642 #define LL_MAX_BLKSIZE (4UL * 1024 * 1024)
644 #define ll_s2sbi(sb) (s2lsi(sb)->lsi_llsbi)
646 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
647 void __d_rehash(struct dentry * entry, int lock);
648 static inline __u64 ll_ts2u64(struct timespec *time)
650 __u64 t = time->tv_sec;
654 static inline __u64 ll_ts2u64(time_t *time)
660 /* don't need an addref as the sb_info should be holding one */
661 static inline struct obd_export *ll_s2dtexp(struct super_block *sb)
663 return ll_s2sbi(sb)->ll_dt_exp;
666 /* don't need an addref as the sb_info should be holding one */
667 static inline struct obd_export *ll_s2mdexp(struct super_block *sb)
669 return ll_s2sbi(sb)->ll_md_exp;
672 static inline struct client_obd *sbi2mdc(struct ll_sb_info *sbi)
674 struct obd_device *obd = sbi->ll_md_exp->exp_obd;
680 // FIXME: replace the name of this with LL_SB to conform to kernel stuff
681 static inline struct ll_sb_info *ll_i2sbi(struct inode *inode)
683 return ll_s2sbi(inode->i_sb);
686 static inline struct obd_export *ll_i2dtexp(struct inode *inode)
688 return ll_s2dtexp(inode->i_sb);
691 static inline struct obd_export *ll_i2mdexp(struct inode *inode)
693 return ll_s2mdexp(inode->i_sb);
696 static inline struct lu_fid *ll_inode2fid(struct inode *inode)
698 LASSERT(inode != NULL);
699 return &ll_i2info(inode)->lli_fid;
702 static inline int ll_mds_max_easize(struct super_block *sb)
704 return sbi2mdc(ll_s2sbi(sb))->cl_max_mds_easize;
707 static inline __u64 ll_file_maxbytes(struct inode *inode)
709 return ll_i2info(inode)->lli_maxbytes;
713 int ll_setxattr(struct dentry *dentry, const char *name,
714 const void *value, size_t size, int flags);
715 ssize_t ll_getxattr(struct dentry *dentry, const char *name,
716 void *buffer, size_t size);
717 ssize_t ll_listxattr(struct dentry *dentry, char *buffer, size_t size);
718 int ll_removexattr(struct dentry *dentry, const char *name);
720 /* llite/remote_perm.c */
721 extern kmem_cache_t *ll_remote_perm_cachep;
722 extern kmem_cache_t *ll_rmtperm_hash_cachep;
724 struct hlist_head *alloc_rmtperm_hash(void);
725 void free_rmtperm_hash(struct hlist_head *hash);
726 int ll_update_remote_perm(struct inode *inode, struct mdt_remote_perm *perm);
727 int lustre_check_remote_perm(struct inode *inode, int mask);
729 /* llite/llite_fid.c */
730 int ll_fid_md_alloc(struct ll_sb_info *sbi, struct lu_fid *fid,
731 struct lu_placement_hint *hint);
733 int ll_fid_dt_alloc(struct ll_sb_info *sbi, struct lu_fid *fid,
734 struct lu_placement_hint *hint);
736 ino_t ll_fid_build_ino(struct ll_sb_info *sbi, struct lu_fid *fid);
738 /* llite/llite_capa.c */
739 extern cfs_timer_t ll_capa_timer;
741 int ll_capa_thread_start(void);
742 void ll_capa_thread_stop(void);
743 void ll_capa_timer_callback(unsigned long unused);
745 struct obd_capa *ll_add_capa(struct inode *inode, struct obd_capa *ocapa);
746 int ll_update_capa(struct obd_capa *ocapa, struct lustre_capa *capa);
748 void ll_capa_open(struct inode *inode);
749 void ll_capa_close(struct inode *inode);
751 struct obd_capa *ll_mdscapa_get(struct inode *inode);
752 struct obd_capa *ll_osscapa_get(struct inode *inode, __u64 opc);
754 void ll_truncate_free_capa(struct obd_capa *ocapa);
755 void ll_clear_inode_capas(struct inode *inode);
757 #endif /* LLITE_INTERNAL_H */