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)
34 struct ll_dentry_data {
37 struct obd_client_handle lld_cwd_och;
38 struct obd_client_handle lld_mnt_och;
39 #ifndef LUSTRE_KERNEL_VERSION
40 struct lookup_intent *lld_it;
44 #define ll_d2d(de) ((struct ll_dentry_data*) de->d_fsdata)
46 extern struct file_operations ll_pgcache_seq_fops;
48 #define LLI_INODE_MAGIC 0x111d0de5
49 #define LLI_INODE_DEAD 0xdeadd00d
51 /* remote client permission cache */
52 #define REMOTE_PERM_HASHSIZE 16
54 /* llite setxid/access permission for user on remote client */
55 struct ll_remote_perm {
56 struct hlist_node lrp_list;
61 int lrp_access_perm; /* MAY_READ/WRITE/EXEC, this
62 is access permission with
63 lrp_fsuid/lrp_fsgid. */
67 /* MDS has an authority for the Size-on-MDS attributes. */
68 LLIF_MDS_SIZE_LOCK = (1 << 0),
69 /* Epoch close is postponed. */
70 LLIF_EPOCH_PENDING = (1 << 1),
71 /* DONE WRITING is allowed. */
72 LLIF_DONE_WRITING = (1 << 2),
73 /* Sizeon-on-MDS attributes are changed. An attribute update needs to
75 LLIF_SOM_DIRTY = (1 << 3),
78 struct ll_inode_info {
80 struct semaphore lli_size_sem; /* protect open and change size */
81 void *lli_size_sem_owner;
82 struct semaphore lli_write_sem;
83 char *lli_symlink_name;
86 unsigned long lli_flags;
88 /* this lock protects posix_acl, pending_write_llaps, mmap_cnt */
90 struct list_head lli_pending_write_llaps;
91 struct list_head lli_close_list;
92 /* handle is to be sent to MDS later on done_writing and setattr.
93 * Open handle data are needed for the recovery to reconstruct
94 * the inode state on the MDS. XXX: recovery is not ready yet. */
95 struct obd_client_handle *lli_pending_och;
96 atomic_t lli_mmap_cnt;
98 /* for writepage() only to communicate to fsync */
101 struct posix_acl *lli_posix_acl;
103 /* remote permission hash */
104 struct hlist_head *lli_remote_perms;
105 unsigned long lli_rmtperm_utime;
106 struct semaphore lli_rmtperm_sem;
108 struct list_head lli_dead_list;
110 struct semaphore lli_och_sem; /* Protects access to och pointers
111 and their usage counters */
112 /* We need all three because every inode may be opened in different
114 struct obd_client_handle *lli_mds_read_och;
115 __u64 lli_open_fd_read_count;
116 struct obd_client_handle *lli_mds_write_och;
117 __u64 lli_open_fd_write_count;
118 struct obd_client_handle *lli_mds_exec_och;
119 __u64 lli_open_fd_exec_count;
121 struct inode lli_vfs_inode;
123 /* identifying fields for both metadata and data stacks. */
124 struct lu_fid lli_fid;
125 struct lov_stripe_md *lli_smd;
128 /* open count currently used by capability only, indicate whether
129 * capability needs renewal */
130 atomic_t lli_open_count;
131 struct obd_capa *lli_mds_capa;
132 struct list_head lli_oss_capas;
136 * Locking to guarantee consistency of non-atomic updates to long long i_size,
137 * consistency between file size and KMS, and consistency within
138 * ->lli_smd->lsm_oinfo[]'s.
140 * Implemented by ->lli_size_sem and ->lsm_sem, nested in that order.
143 void ll_inode_size_lock(struct inode *inode, int lock_lsm);
144 void ll_inode_size_unlock(struct inode *inode, int unlock_lsm);
146 // FIXME: replace the name of this with LL_I to conform to kernel stuff
147 // static inline struct ll_inode_info *LL_I(struct inode *inode)
148 static inline struct ll_inode_info *ll_i2info(struct inode *inode)
150 return container_of(inode, struct ll_inode_info, lli_vfs_inode);
153 /* default to about 40meg of readahead on a given system. That much tied
154 * up in 512k readahead requests serviced at 40ms each is about 1GB/s. */
155 #define SBI_DEFAULT_READAHEAD_MAX (40UL << (20 - CFS_PAGE_SHIFT))
157 /* default to read-ahead full files smaller than 2MB on the second read */
158 #define SBI_DEFAULT_READAHEAD_WHOLE_MAX (2UL << (20 - CFS_PAGE_SHIFT))
163 RA_STAT_DISTANT_READPAGE,
164 RA_STAT_MISS_IN_WINDOW,
165 RA_STAT_FAILED_GRAB_PAGE,
166 RA_STAT_FAILED_MATCH,
171 RA_STAT_MAX_IN_FLIGHT,
172 RA_STAT_WRONG_GRAB_PAGE,
177 unsigned long ra_cur_pages;
178 unsigned long ra_max_pages;
179 unsigned long ra_max_read_ahead_whole_pages;
180 unsigned long ra_stats[_NR_RA_STAT];
183 /* LL_HIST_MAX=32 causes an overflow */
184 #define LL_HIST_MAX 28
185 #define LL_HIST_START 12 /* buckets start at 2^12 = 4k */
186 #define LL_PROCESS_HIST_MAX 10
187 struct per_process_info {
189 struct obd_histogram pp_r_hist;
190 struct obd_histogram pp_w_hist;
193 /* pp_extents[LL_PROCESS_HIST_MAX] will hold the combined process info */
194 struct ll_rw_extents_info {
195 struct per_process_info pp_extents[LL_PROCESS_HIST_MAX + 1];
198 #define LL_OFFSET_HIST_MAX 100
199 struct ll_rw_process_info {
202 loff_t rw_range_start;
204 loff_t rw_last_file_pos;
206 size_t rw_smallest_extent;
207 size_t rw_largest_extent;
208 struct file *rw_last_file;
211 enum stats_track_type {
212 STATS_TRACK_ALL = 0, /* track all processes */
213 STATS_TRACK_PID, /* track process with this pid */
214 STATS_TRACK_PPID, /* track processes with this ppid */
215 STATS_TRACK_GID, /* track processes with this gid */
219 /* flags for sbi->ll_flags */
220 #define LL_SBI_NOLCK 0x01 /* DLM locking disabled (directio-only) */
221 #define LL_SBI_CHECKSUM 0x02 /* checksum each page as it's written */
222 #define LL_SBI_FLOCK 0x04
223 #define LL_SBI_USER_XATTR 0x08 /* support user xattr */
224 #define LL_SBI_ACL 0x10 /* support ACL */
225 #define LL_SBI_JOIN 0x20 /* support JOIN */
226 #define LL_SBI_RMT_CLIENT 0x40 /* remote client */
227 #define LL_SBI_MDS_CAPA 0x80 /* support mds capa */
228 #define LL_SBI_OSS_CAPA 0x100 /* support oss capa */
229 #define LL_SBI_LOCALFLOCK 0x200 /* Local flocks support by kernel */
230 #define LL_SBI_LRU_RESIZE 0x400 /* lru resize support */
233 struct list_head ll_list;
234 /* this protects pglist and ra_info. It isn't safe to
235 * grab from interrupt contexts */
237 spinlock_t ll_pp_extent_lock; /* Lock for pp_extent entries */
238 spinlock_t ll_process_lock; /* Lock for ll_rw_process_info */
239 struct obd_uuid ll_sb_uuid;
240 struct obd_export *ll_md_exp;
241 struct obd_export *ll_dt_exp;
242 struct proc_dir_entry* ll_proc_root;
243 struct lu_fid ll_root_fid; /* root object fid */
246 struct list_head ll_conn_chain; /* per-conn chain of SBs */
247 struct lustre_client_ocd ll_lco;
249 struct list_head ll_orphan_dentry_list; /*please don't ask -p*/
250 struct ll_close_queue *ll_lcq;
252 struct lprocfs_stats *ll_stats; /* lprocfs stats counter */
254 unsigned long ll_async_page_max;
255 unsigned long ll_async_page_count;
256 unsigned long ll_pglist_gen;
257 struct list_head ll_pglist; /* all pages (llap_pglist_item) */
259 struct ll_ra_info ll_ra_info;
260 unsigned int ll_namelen;
261 struct file_operations *ll_fop;
263 #ifdef HAVE_EXPORT___IGET
264 struct list_head ll_deathrow; /* inodes to be destroyed (b1443) */
265 spinlock_t ll_deathrow_lock;
267 /* =0 - hold lock over whole read/write
268 * >0 - max. chunk to be read/written w/o lock re-acquiring */
269 unsigned long ll_max_rw_chunk;
272 struct ll_rw_extents_info ll_rw_extents_info;
273 int ll_extent_process_count;
274 struct ll_rw_process_info ll_rw_process_info[LL_PROCESS_HIST_MAX];
275 unsigned int ll_offset_process_count;
276 struct ll_rw_process_info ll_rw_offset_info[LL_OFFSET_HIST_MAX];
277 unsigned int ll_rw_offset_entry_count;
278 enum stats_track_type ll_stats_track_type;
279 int ll_stats_track_id;
281 dev_t ll_sdev_orig; /* save s_dev before assign for clustred nfs*/
284 #define LL_DEFAULT_MAX_RW_CHUNK (32 * 1024 * 1024)
289 struct task_struct *lrr_reader;
290 struct list_head lrr_linkage;
294 * per file-descriptor read-ahead data.
296 struct ll_readahead_state {
299 * index of the last page that read(2) needed and that wasn't in the
300 * cache. Used by ras_update() to detect seeks.
302 * XXX nikita: if access seeks into cached region, Lustre doesn't see
305 unsigned long ras_last_readpage;
307 * number of pages read after last read-ahead window reset. As window
308 * is reset on each seek, this is effectively a number of consecutive
309 * accesses. Maybe ->ras_accessed_in_window is better name.
311 * XXX nikita: window is also reset (by ras_update()) when Lustre
312 * believes that memory pressure evicts read-ahead pages. In that
313 * case, it probably doesn't make sense to expand window to
314 * PTLRPC_MAX_BRW_PAGES on the third access.
316 unsigned long ras_consecutive_pages;
318 * number of read requests after the last read-ahead window reset
319 * As window is reset on each seek, this is effectively the number
320 * on consecutive read request and is used to trigger read-ahead.
322 unsigned long ras_consecutive_requests;
324 * Parameters of current read-ahead window. Handled by
325 * ras_update(). On the initial access to the file or after a seek,
326 * window is reset to 0. After 3 consecutive accesses, window is
327 * expanded to PTLRPC_MAX_BRW_PAGES. Afterwards, window is enlarged by
328 * PTLRPC_MAX_BRW_PAGES chunks up to ->ra_max_pages.
330 unsigned long ras_window_start, ras_window_len;
332 * Where next read-ahead should start at. This lies within read-ahead
333 * window. Read-ahead window is read in pieces rather than at once
334 * because: 1. lustre limits total number of pages under read-ahead by
335 * ->ra_max_pages (see ll_ra_count_get()), 2. client cannot read pages
336 * not covered by DLM lock.
338 unsigned long ras_next_readahead;
340 * Total number of ll_file_read requests issued, reads originating
341 * due to mmap are not counted in this total. This value is used to
342 * trigger full file read-ahead after multiple reads to a small file.
344 unsigned long ras_requests;
346 * Page index with respect to the current request, these value
347 * will not be accurate when dealing with reads issued via mmap.
349 unsigned long ras_request_index;
351 * list of struct ll_ra_read's one per read(2) call current in
352 * progress against this file descriptor. Used by read-ahead code,
353 * protected by ->ras_lock.
355 struct list_head ras_read_beads;
361 extern cfs_mem_cache_t *ll_file_data_slab;
362 struct lustre_handle;
363 struct ll_file_data {
364 struct ll_readahead_state fd_ras;
366 struct lustre_handle fd_cwlockh;
367 unsigned long fd_gid;
368 struct ll_file_dir fd_dir;
372 struct lov_stripe_md;
374 extern spinlock_t inode_lock;
376 extern struct proc_dir_entry *proc_lustre_fs_root;
378 static inline struct inode *ll_info2i(struct ll_inode_info *lli)
380 return &lli->lli_vfs_inode;
384 struct inode *icbd_parent;
385 struct dentry **icbd_childp;
389 void ll_i2gids(__u32 *suppgids, struct inode *i1,struct inode *i2);
391 #define LLAP_MAGIC 98764321
393 extern cfs_mem_cache_t *ll_async_page_slab;
394 extern size_t ll_async_page_slab_size;
395 struct ll_async_page {
397 /* only trust these if the page lock is providing exclusion */
398 unsigned int llap_write_queued:1,
399 llap_defer_uptodate:1,
404 struct page *llap_page;
405 struct list_head llap_pending_write;
406 struct list_head llap_pglist_item;
407 /* checksum for paranoid I/O debugging */
412 * enumeration of llap_from_page() call-sites. Used to export statistics in
413 * /proc/fs/lustre/llite/fsN/dump_page_cache.
416 LLAP_ORIGIN_UNKNOWN = 0,
417 LLAP_ORIGIN_READPAGE,
418 LLAP_ORIGIN_READAHEAD,
419 LLAP_ORIGIN_COMMIT_WRITE,
420 LLAP_ORIGIN_WRITEPAGE,
421 LLAP_ORIGIN_REMOVEPAGE,
424 extern char *llap_origins[];
426 #ifdef HAVE_REGISTER_CACHE
427 #define ll_register_cache(cache) register_cache(cache)
428 #define ll_unregister_cache(cache) unregister_cache(cache)
430 #define ll_register_cache(cache) do {} while (0)
431 #define ll_unregister_cache(cache) do {} while (0)
434 void ll_ra_read_in(struct file *f, struct ll_ra_read *rar);
435 void ll_ra_read_ex(struct file *f, struct ll_ra_read *rar);
436 struct ll_ra_read *ll_ra_read_get(struct file *f);
438 /* llite/lproc_llite.c */
440 int lprocfs_register_mountpoint(struct proc_dir_entry *parent,
441 struct super_block *sb, char *osc, char *mdc);
442 void lprocfs_unregister_mountpoint(struct ll_sb_info *sbi);
443 void ll_stats_ops_tally(struct ll_sb_info *sbi, int op, int count);
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) {}
448 static void ll_stats_ops_tally(struct ll_sb_info *sbi, int op, int count) {}
453 extern struct file_operations ll_dir_operations;
454 extern struct inode_operations ll_dir_inode_operations;
457 int ll_objects_destroy(struct ptlrpc_request *request, struct inode *dir);
458 struct inode *ll_iget(struct super_block *sb, ino_t hash,
459 struct lustre_md *lic);
460 struct dentry *ll_find_alias(struct inode *, struct dentry *);
461 int ll_md_blocking_ast(struct ldlm_lock *, struct ldlm_lock_desc *,
462 void *data, int flag);
463 #ifndef LUSTRE_KERNEL_VERSION
464 struct lookup_intent *ll_convert_intent(struct open_intent *oit,
469 int ll_prepare_write(struct file *, struct page *, unsigned from, unsigned to);
470 int ll_commit_write(struct file *, struct page *, unsigned from, unsigned to);
471 int ll_writepage(struct page *page);
472 void ll_inode_fill_obdo(struct inode *inode, int cmd, struct obdo *oa);
473 int ll_ap_completion(void *data, int cmd, struct obdo *oa, int rc);
474 int llap_shrink_cache(struct ll_sb_info *sbi, int shrink_fraction);
475 struct ll_async_page *llap_from_page(struct page *page, unsigned origin);
476 extern struct cache_definition ll_cache_definition;
477 void ll_removepage(struct page *page);
478 int ll_readpage(struct file *file, struct page *page);
479 struct ll_async_page *llap_cast_private(struct page *page);
480 void ll_readahead_init(struct inode *inode, struct ll_readahead_state *ras);
481 void ll_ra_accounting(struct ll_async_page *llap,struct address_space *mapping);
482 void ll_truncate(struct inode *inode);
483 int ll_sync_page_range(struct inode *, struct address_space *, loff_t, size_t);
486 extern struct file_operations ll_file_operations;
487 extern struct file_operations ll_file_operations_flock;
488 extern struct file_operations ll_file_operations_noflock;
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 md_open_data *data,
514 struct lustre_handle *fh, __u64 ioepoch);
515 int ll_inode_getattr(struct inode *inode, struct obdo *obdo);
516 int ll_md_setattr(struct inode *inode, struct md_op_data *op_data,
517 struct md_open_data **mod);
518 void ll_pack_inode2opdata(struct inode *inode, struct md_op_data *op_data,
519 struct lustre_handle *fh);
520 extern void ll_rw_stats_tally(struct ll_sb_info *sbi, pid_t pid, struct file
521 *file, size_t count, int rw);
522 int ll_getattr_it(struct vfsmount *mnt, struct dentry *de,
523 struct lookup_intent *it, struct kstat *stat);
524 int ll_getattr(struct vfsmount *mnt, struct dentry *de, struct kstat *stat);
525 struct ll_file_data *ll_file_data_get(void);
526 int ll_inode_permission(struct inode *inode, int mask, struct nameidata *nd);
527 int ll_lov_setstripe_ea_info(struct inode *inode, struct file *file,
528 int flags, struct lov_user_md *lum,
530 int ll_lov_getstripe_ea_info(struct inode *inode, const char *filename,
531 struct lov_mds_md **lmm, int *lmm_size,
532 struct ptlrpc_request **request);
533 int ll_dir_setstripe(struct inode *inode, struct lov_user_md *lump,
535 int ll_dir_getstripe(struct inode *inode, struct lov_mds_md **lmm,
536 int *lmm_size, struct ptlrpc_request **request);
539 void ll_intent_drop_lock(struct lookup_intent *);
540 void ll_intent_release(struct lookup_intent *);
541 int ll_drop_dentry(struct dentry *dentry);
542 extern void ll_set_dd(struct dentry *de);
543 int ll_drop_dentry(struct dentry *dentry);
544 void ll_unhash_aliases(struct inode *);
545 void ll_frob_intent(struct lookup_intent **itp, struct lookup_intent *deft);
546 void ll_lookup_finish_locks(struct lookup_intent *it, struct dentry *dentry);
547 int ll_dcompare(struct dentry *parent, struct qstr *d_name, struct qstr *name);
548 int ll_revalidate_it_finish(struct ptlrpc_request *request, int offset,
549 struct lookup_intent *it, struct dentry *de);
551 /* llite/llite_lib.c */
552 extern struct super_operations lustre_super_operations;
554 char *ll_read_opt(const char *opt, char *data);
555 void ll_lli_init(struct ll_inode_info *lli);
556 int ll_fill_super(struct super_block *sb);
557 void ll_put_super(struct super_block *sb);
558 void ll_kill_super(struct super_block *sb);
559 struct inode *ll_inode_from_lock(struct ldlm_lock *lock);
560 void ll_clear_inode(struct inode *inode);
561 int ll_setattr_raw(struct inode *inode, struct iattr *attr);
562 int ll_setattr(struct dentry *de, struct iattr *attr);
563 #ifndef HAVE_STATFS_DENTRY_PARAM
564 int ll_statfs(struct super_block *sb, struct kstatfs *sfs);
566 int ll_statfs(struct dentry *de, struct kstatfs *sfs);
568 int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs,
570 void ll_update_inode(struct inode *inode, struct lustre_md *md);
571 void ll_read_inode2(struct inode *inode, void *opaque);
572 void ll_delete_inode(struct inode *inode);
573 int ll_iocontrol(struct inode *inode, struct file *file,
574 unsigned int cmd, unsigned long arg);
575 int ll_flush_ctx(struct inode *inode);
576 #ifdef HAVE_UMOUNTBEGIN_VFSMOUNT
577 void ll_umount_begin(struct vfsmount *vfsmnt, int flags);
579 void ll_umount_begin(struct super_block *sb);
581 int ll_remount_fs(struct super_block *sb, int *flags, char *data);
582 int ll_prep_inode(struct inode **inode, struct ptlrpc_request *req,
583 int offset, struct super_block *);
584 void lustre_dump_dentry(struct dentry *, int recur);
585 void lustre_dump_inode(struct inode *);
586 struct ll_async_page *llite_pglist_next_llap(struct ll_sb_info *sbi,
587 struct list_head *list);
588 int ll_obd_statfs(struct inode *inode, void *arg);
589 int ll_get_max_mdsize(struct ll_sb_info *sbi, int *max_mdsize);
590 int ll_process_config(struct lustre_cfg *lcfg);
591 int ll_ioctl_getfacl(struct inode *inode, struct rmtacl_ioctl_data *ioc);
592 int ll_ioctl_setfacl(struct inode *inode, struct rmtacl_ioctl_data *ioc);
593 struct md_op_data *ll_prep_md_op_data(struct md_op_data *op_data,
594 struct inode *i1, struct inode *i2,
595 const char *name, int namelen,
596 int mode, __u32 opc, void *data);
597 void ll_finish_md_op_data(struct md_op_data *op_data);
599 /* llite/llite_nfs.c */
600 extern struct export_operations lustre_export_operations;
601 __u32 get_uuid2int(const char *name, int len);
602 struct dentry *ll_fh_to_dentry(struct super_block *sb, __u32 *data, int len,
603 int fhtype, int parent);
604 int ll_dentry_to_fh(struct dentry *, __u32 *datap, int *lenp, int need_parent);
606 /* llite/special.c */
607 extern struct inode_operations ll_special_inode_operations;
608 extern struct file_operations ll_special_chr_inode_fops;
609 extern struct file_operations ll_special_chr_file_fops;
610 extern struct file_operations ll_special_blk_inode_fops;
611 extern struct file_operations ll_special_fifo_inode_fops;
612 extern struct file_operations ll_special_fifo_file_fops;
613 extern struct file_operations ll_special_sock_inode_fops;
615 /* llite/symlink.c */
616 extern struct inode_operations ll_fast_symlink_inode_operations;
618 /* llite/llite_close.c */
619 struct ll_close_queue {
621 struct list_head lcq_head;
622 wait_queue_head_t lcq_waitq;
623 struct completion lcq_comp;
627 void llap_write_pending(struct inode *inode, struct ll_async_page *llap);
628 int llap_write_complete(struct inode *inode, struct ll_async_page *llap);
629 int ll_inode_dirty(struct inode *inode, unsigned long flags);
630 void ll_queue_done_writing(struct inode *inode, unsigned long flags);
631 void ll_close_thread_shutdown(struct ll_close_queue *lcq);
632 int ll_close_thread_start(struct ll_close_queue **lcq_ret);
634 /* llite/llite_mmap.c */
635 typedef struct rb_root rb_root_t;
636 typedef struct rb_node rb_node_t;
638 struct ll_lock_tree_node;
639 struct ll_lock_tree {
641 struct list_head lt_locked_list;
642 struct ll_file_data *lt_fd;
645 int ll_teardown_mmaps(struct address_space *mapping, __u64 first, __u64 last);
646 int ll_file_mmap(struct file * file, struct vm_area_struct * vma);
647 struct ll_lock_tree_node * ll_node_from_inode(struct inode *inode, __u64 start,
648 __u64 end, ldlm_mode_t mode);
649 int ll_tree_lock(struct ll_lock_tree *tree,
650 struct ll_lock_tree_node *first_node,
651 const char *buf, size_t count, int ast_flags);
652 int ll_tree_unlock(struct ll_lock_tree *tree);
654 #define ll_s2sbi(sb) (s2lsi(sb)->lsi_llsbi)
656 void __d_rehash(struct dentry * entry, int lock);
657 static inline __u64 ll_ts2u64(struct timespec *time)
659 __u64 t = time->tv_sec;
663 /* don't need an addref as the sb_info should be holding one */
664 static inline struct obd_export *ll_s2dtexp(struct super_block *sb)
666 return ll_s2sbi(sb)->ll_dt_exp;
669 /* don't need an addref as the sb_info should be holding one */
670 static inline struct obd_export *ll_s2mdexp(struct super_block *sb)
672 return ll_s2sbi(sb)->ll_md_exp;
675 static inline struct client_obd *sbi2mdc(struct ll_sb_info *sbi)
677 struct obd_device *obd = sbi->ll_md_exp->exp_obd;
683 // FIXME: replace the name of this with LL_SB to conform to kernel stuff
684 static inline struct ll_sb_info *ll_i2sbi(struct inode *inode)
686 return ll_s2sbi(inode->i_sb);
689 static inline struct obd_export *ll_i2dtexp(struct inode *inode)
691 return ll_s2dtexp(inode->i_sb);
694 static inline struct obd_export *ll_i2mdexp(struct inode *inode)
696 return ll_s2mdexp(inode->i_sb);
699 static inline struct lu_fid *ll_inode2fid(struct inode *inode)
702 LASSERT(inode != NULL);
703 fid = &ll_i2info(inode)->lli_fid;
704 LASSERT(fid_is_igif(fid) || fid_ver(fid) == 0);
708 static inline int ll_mds_max_easize(struct super_block *sb)
710 return sbi2mdc(ll_s2sbi(sb))->cl_max_mds_easize;
713 static inline __u64 ll_file_maxbytes(struct inode *inode)
715 return ll_i2info(inode)->lli_maxbytes;
719 int ll_setxattr(struct dentry *dentry, const char *name,
720 const void *value, size_t size, int flags);
721 ssize_t ll_getxattr(struct dentry *dentry, const char *name,
722 void *buffer, size_t size);
723 ssize_t ll_listxattr(struct dentry *dentry, char *buffer, size_t size);
724 int ll_removexattr(struct dentry *dentry, const char *name);
726 /* llite/remote_perm.c */
727 extern cfs_mem_cache_t *ll_remote_perm_cachep;
728 extern cfs_mem_cache_t *ll_rmtperm_hash_cachep;
730 struct hlist_head *alloc_rmtperm_hash(void);
731 void free_rmtperm_hash(struct hlist_head *hash);
732 int ll_update_remote_perm(struct inode *inode, struct mdt_remote_perm *perm);
733 int lustre_check_remote_perm(struct inode *inode, int mask);
735 /* llite/llite_fid.c */
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);
756 void ll_print_capa_stat(struct ll_sb_info *sbi);
758 /* llite ioctl register support rountine */
765 #define LLIOC_MAX_CMD 256
768 * Rules to write a callback function:
771 * @magic: Dynamic ioctl call routine will feed this vaule with the pointer
772 * returned to ll_iocontrol_register. Callback functions should use this
773 * data to check the potential collasion of ioctl cmd. If collasion is
774 * found, callback function should return LLIOC_CONT.
775 * @rcp: The result of ioctl command.
778 * If @magic matches the pointer returned by ll_iocontrol_data, the
779 * callback should return LLIOC_STOP; return LLIOC_STOP otherwise.
781 typedef enum llioc_iter (*llioc_callback_t)(struct inode *inode,
782 struct file *file, unsigned int cmd, unsigned long arg,
783 void *magic, int *rcp);
785 enum llioc_iter ll_iocontrol_call(struct inode *inode, struct file *file,
786 unsigned int cmd, unsigned long arg, int *rcp);
788 /* export functions */
789 /* Register ioctl block dynamatically for a regular file.
791 * @cmd: the array of ioctl command set
792 * @count: number of commands in the @cmd
793 * @cb: callback function, it will be called if an ioctl command is found to
794 * belong to the command list @cmd.
797 * A magic pointer will be returned if success;
798 * otherwise, NULL will be returned.
800 void *ll_iocontrol_register(llioc_callback_t cb, int count, unsigned int *cmd);
801 void ll_iocontrol_unregister(void *magic);
805 #endif /* LLITE_INTERNAL_H */