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>
14 #endif /* HAVE_XATTR_ACL */
15 #ifdef HAVE_LINUX_POSIX_ACL_XATTR_H
16 # include <linux/posix_acl_xattr.h>
17 #endif /* HAVE_LINUX_POSIX_ACL_XATTR_H */
18 #endif /* CONFIG_FS_POSIX_ACL */
20 #include <lustre_debug.h>
21 #include <lustre_ver.h>
22 #include <lustre_disk.h> /* for s2sbi */
23 #include <lustre_eacl.h>
29 #define LL_IT2STR(it) ((it) ? ldlm_it2str((it)->it_op) : "0")
30 #define LUSTRE_FPRIVATE(file) ((file)->private_data)
32 #ifdef HAVE_VFS_INTENT_PATCHES
33 static inline struct lookup_intent *ll_nd2it(struct nameidata *nd)
39 struct ll_dentry_data {
42 struct obd_client_handle lld_cwd_och;
43 struct obd_client_handle lld_mnt_och;
44 #ifndef HAVE_VFS_INTENT_PATCHES
45 struct lookup_intent *lld_it;
49 #define ll_d2d(de) ((struct ll_dentry_data*) de->d_fsdata)
51 extern struct file_operations ll_pgcache_seq_fops;
53 #define LLI_INODE_MAGIC 0x111d0de5
54 #define LLI_INODE_DEAD 0xdeadd00d
56 /* remote client permission cache */
57 #define REMOTE_PERM_HASHSIZE 16
59 /* llite setxid/access permission for user on remote client */
60 struct ll_remote_perm {
61 struct hlist_node lrp_list;
66 int lrp_access_perm; /* MAY_READ/WRITE/EXEC, this
67 is access permission with
68 lrp_fsuid/lrp_fsgid. */
72 /* MDS has an authority for the Size-on-MDS attributes. */
73 LLIF_MDS_SIZE_LOCK = (1 << 0),
74 /* Epoch close is postponed. */
75 LLIF_EPOCH_PENDING = (1 << 1),
76 /* DONE WRITING is allowed. */
77 LLIF_DONE_WRITING = (1 << 2),
78 /* Sizeon-on-MDS attributes are changed. An attribute update needs to
80 LLIF_SOM_DIRTY = (1 << 3),
81 /* File is contented */
82 LLIF_CONTENDED = (1 << 4),
83 /* Truncate uses server lock for this file */
84 LLIF_SRVLOCK = (1 << 5)
88 struct ll_inode_info {
90 struct semaphore lli_size_sem; /* protect open and change size */
91 void *lli_size_sem_owner;
92 struct semaphore lli_write_sem;
93 char *lli_symlink_name;
96 unsigned long lli_flags;
97 cfs_time_t lli_contention_time;
99 /* this lock protects posix_acl, pending_write_llaps, mmap_cnt */
101 struct list_head lli_pending_write_llaps;
102 struct list_head lli_close_list;
103 /* handle is to be sent to MDS later on done_writing and setattr.
104 * Open handle data are needed for the recovery to reconstruct
105 * the inode state on the MDS. XXX: recovery is not ready yet. */
106 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 struct inode lli_vfs_inode;
134 /* identifying fields for both metadata and data stacks. */
135 struct lu_fid lli_fid;
136 struct lov_stripe_md *lli_smd;
139 /* open count currently used by capability only, indicate whether
140 * capability needs renewal */
141 atomic_t lli_open_count;
142 struct obd_capa *lli_mds_capa;
143 struct list_head lli_oss_capas;
147 * Locking to guarantee consistency of non-atomic updates to long long i_size,
148 * consistency between file size and KMS, and consistency within
149 * ->lli_smd->lsm_oinfo[]'s.
151 * Implemented by ->lli_size_sem and ->lsm_sem, nested in that order.
154 void ll_inode_size_lock(struct inode *inode, int lock_lsm);
155 void ll_inode_size_unlock(struct inode *inode, int unlock_lsm);
157 // FIXME: replace the name of this with LL_I to conform to kernel stuff
158 // static inline struct ll_inode_info *LL_I(struct inode *inode)
159 static inline struct ll_inode_info *ll_i2info(struct inode *inode)
161 return container_of(inode, struct ll_inode_info, lli_vfs_inode);
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 */
241 #define LL_SBI_LRU_RESIZE 0x400 /* lru resize support */
243 /* default value for ll_sb_info->contention_time */
244 #define SBI_DEFAULT_CONTENTION_SECONDS 60
245 /* default value for lockless_truncate_enable */
246 #define SBI_DEFAULT_LOCKLESS_TRUNCATE_ENABLE 1
247 #define RCE_HASHES 32
249 struct rmtacl_ctl_entry {
250 struct list_head rce_list;
251 pid_t rce_key; /* hash key */
252 int rce_ops; /* acl operation type */
255 struct rmtacl_ctl_table {
257 struct list_head rct_entries[RCE_HASHES];
263 struct list_head ee_list;
264 pid_t ee_key; /* hash key */
265 struct lu_fid ee_fid;
266 int ee_type; /* ACL type for ACCESS or DEFAULT */
267 ext_acl_xattr_header *ee_acl;
272 struct list_head et_entries[EE_HASHES];
276 struct list_head ll_list;
277 /* this protects pglist and ra_info. It isn't safe to
278 * grab from interrupt contexts */
280 spinlock_t ll_pp_extent_lock; /* Lock for pp_extent entries */
281 spinlock_t ll_process_lock; /* Lock for ll_rw_process_info */
282 struct obd_uuid ll_sb_uuid;
283 struct obd_export *ll_md_exp;
284 struct obd_export *ll_dt_exp;
285 struct proc_dir_entry* ll_proc_root;
286 struct lu_fid ll_root_fid; /* root object fid */
289 struct list_head ll_conn_chain; /* per-conn chain of SBs */
290 struct lustre_client_ocd ll_lco;
292 struct list_head ll_orphan_dentry_list; /*please don't ask -p*/
293 struct ll_close_queue *ll_lcq;
295 struct lprocfs_stats *ll_stats; /* lprocfs stats counter */
297 unsigned long ll_async_page_max;
298 unsigned long ll_async_page_count;
299 unsigned long ll_pglist_gen;
300 struct list_head ll_pglist; /* all pages (llap_pglist_item) */
302 unsigned ll_contention_time; /* seconds */
303 unsigned ll_lockless_truncate_enable; /* true/false */
305 struct ll_ra_info ll_ra_info;
306 unsigned int ll_namelen;
307 struct file_operations *ll_fop;
309 #ifdef HAVE_EXPORT___IGET
310 struct list_head ll_deathrow; /* inodes to be destroyed (b1443) */
311 spinlock_t ll_deathrow_lock;
313 /* =0 - hold lock over whole read/write
314 * >0 - max. chunk to be read/written w/o lock re-acquiring */
315 unsigned long ll_max_rw_chunk;
318 struct ll_rw_extents_info ll_rw_extents_info;
319 int ll_extent_process_count;
320 struct ll_rw_process_info ll_rw_process_info[LL_PROCESS_HIST_MAX];
321 unsigned int ll_offset_process_count;
322 struct ll_rw_process_info ll_rw_offset_info[LL_OFFSET_HIST_MAX];
323 unsigned int ll_rw_offset_entry_count;
324 enum stats_track_type ll_stats_track_type;
325 int ll_stats_track_id;
328 dev_t ll_sdev_orig; /* save s_dev before assign for
330 struct rmtacl_ctl_table ll_rct;
331 struct eacl_table ll_et;
334 #define LL_DEFAULT_MAX_RW_CHUNK (32 * 1024 * 1024)
339 struct task_struct *lrr_reader;
340 struct list_head lrr_linkage;
344 * per file-descriptor read-ahead data.
346 struct ll_readahead_state {
349 * index of the last page that read(2) needed and that wasn't in the
350 * cache. Used by ras_update() to detect seeks.
352 * XXX nikita: if access seeks into cached region, Lustre doesn't see
355 unsigned long ras_last_readpage;
357 * number of pages read after last read-ahead window reset. As window
358 * is reset on each seek, this is effectively a number of consecutive
359 * accesses. Maybe ->ras_accessed_in_window is better name.
361 * XXX nikita: window is also reset (by ras_update()) when Lustre
362 * believes that memory pressure evicts read-ahead pages. In that
363 * case, it probably doesn't make sense to expand window to
364 * PTLRPC_MAX_BRW_PAGES on the third access.
366 unsigned long ras_consecutive_pages;
368 * number of read requests after the last read-ahead window reset
369 * As window is reset on each seek, this is effectively the number
370 * on consecutive read request and is used to trigger read-ahead.
372 unsigned long ras_consecutive_requests;
374 * Parameters of current read-ahead window. Handled by
375 * ras_update(). On the initial access to the file or after a seek,
376 * window is reset to 0. After 3 consecutive accesses, window is
377 * expanded to PTLRPC_MAX_BRW_PAGES. Afterwards, window is enlarged by
378 * PTLRPC_MAX_BRW_PAGES chunks up to ->ra_max_pages.
380 unsigned long ras_window_start, ras_window_len;
382 * Where next read-ahead should start at. This lies within read-ahead
383 * window. Read-ahead window is read in pieces rather than at once
384 * because: 1. lustre limits total number of pages under read-ahead by
385 * ->ra_max_pages (see ll_ra_count_get()), 2. client cannot read pages
386 * not covered by DLM lock.
388 unsigned long ras_next_readahead;
390 * Total number of ll_file_read requests issued, reads originating
391 * due to mmap are not counted in this total. This value is used to
392 * trigger full file read-ahead after multiple reads to a small file.
394 unsigned long ras_requests;
396 * Page index with respect to the current request, these value
397 * will not be accurate when dealing with reads issued via mmap.
399 unsigned long ras_request_index;
401 * list of struct ll_ra_read's one per read(2) call current in
402 * progress against this file descriptor. Used by read-ahead code,
403 * protected by ->ras_lock.
405 struct list_head ras_read_beads;
407 * The following 3 items are used for detecting the stride I/O
409 * In stride I/O mode,
410 * ...............|-----data-----|****gap*****|--------|******|....
411 * offset |-stride_pages-|-stride_gap-|
412 * ras_stride_offset = offset;
413 * ras_stride_length = stride_pages + stride_gap;
414 * ras_stride_pages = stride_pages;
415 * Note: all these three items are counted by pages.
417 unsigned long ras_stride_length;
418 unsigned long ras_stride_pages;
419 pgoff_t ras_stride_offset;
421 * number of consecutive stride request count, and it is similar as
422 * ras_consecutive_requests, but used for stride I/O mode.
423 * Note: only more than 2 consecutive stride request are detected,
424 * stride read-ahead will be enable
426 unsigned long ras_consecutive_stride_requests;
432 extern cfs_mem_cache_t *ll_file_data_slab;
433 struct lustre_handle;
434 struct ll_file_data {
435 struct ll_readahead_state fd_ras;
437 struct lustre_handle fd_cwlockh;
438 unsigned long fd_gid;
439 struct ll_file_dir fd_dir;
443 struct lov_stripe_md;
445 extern spinlock_t inode_lock;
447 extern struct proc_dir_entry *proc_lustre_fs_root;
449 static inline struct inode *ll_info2i(struct ll_inode_info *lli)
451 return &lli->lli_vfs_inode;
455 struct inode *icbd_parent;
456 struct dentry **icbd_childp;
460 __u32 ll_i2suppgid(struct inode *i);
461 void ll_i2gids(__u32 *suppgids, struct inode *i1,struct inode *i2);
463 #define LLAP_MAGIC 98764321
465 extern cfs_mem_cache_t *ll_async_page_slab;
466 extern size_t ll_async_page_slab_size;
467 struct ll_async_page {
469 /* only trust these if the page lock is providing exclusion */
470 unsigned int llap_write_queued:1,
471 llap_defer_uptodate:1,
475 llap_lockless_io_page:1;
477 struct page *llap_page;
478 struct list_head llap_pending_write;
479 struct list_head llap_pglist_item;
480 /* checksum for paranoid I/O debugging */
485 * enumeration of llap_from_page() call-sites. Used to export statistics in
486 * /proc/fs/lustre/llite/fsN/dump_page_cache.
489 LLAP_ORIGIN_UNKNOWN = 0,
490 LLAP_ORIGIN_READPAGE,
491 LLAP_ORIGIN_READAHEAD,
492 LLAP_ORIGIN_COMMIT_WRITE,
493 LLAP_ORIGIN_WRITEPAGE,
494 LLAP_ORIGIN_REMOVEPAGE,
495 LLAP_ORIGIN_LOCKLESS_IO,
498 extern char *llap_origins[];
500 #ifdef HAVE_REGISTER_CACHE
501 #define ll_register_cache(cache) register_cache(cache)
502 #define ll_unregister_cache(cache) unregister_cache(cache)
504 #define ll_register_cache(cache) do {} while (0)
505 #define ll_unregister_cache(cache) do {} while (0)
508 void ll_ra_read_in(struct file *f, struct ll_ra_read *rar);
509 void ll_ra_read_ex(struct file *f, struct ll_ra_read *rar);
510 struct ll_ra_read *ll_ra_read_get(struct file *f);
512 /* llite/lproc_llite.c */
514 int lprocfs_register_mountpoint(struct proc_dir_entry *parent,
515 struct super_block *sb, char *osc, char *mdc);
516 void lprocfs_unregister_mountpoint(struct ll_sb_info *sbi);
517 void ll_stats_ops_tally(struct ll_sb_info *sbi, int op, int count);
518 void lprocfs_llite_init_vars(struct lprocfs_static_vars *lvars);
520 static inline int lprocfs_register_mountpoint(struct proc_dir_entry *parent,
521 struct super_block *sb, char *osc, char *mdc){return 0;}
522 static inline void lprocfs_unregister_mountpoint(struct ll_sb_info *sbi) {}
523 static void ll_stats_ops_tally(struct ll_sb_info *sbi, int op, int count) {}
524 static void lprocfs_llite_init_vars(struct lprocfs_static_vars *lvars)
526 memset(lvars, 0, sizeof(*lvars));
532 extern struct file_operations ll_dir_operations;
533 extern struct inode_operations ll_dir_inode_operations;
536 int ll_objects_destroy(struct ptlrpc_request *request,
538 struct inode *ll_iget(struct super_block *sb, ino_t hash,
539 struct lustre_md *lic);
540 struct dentry *ll_find_alias(struct inode *, struct dentry *);
541 int ll_md_blocking_ast(struct ldlm_lock *, struct ldlm_lock_desc *,
542 void *data, int flag);
543 #ifndef HAVE_VFS_INTENT_PATCHES
544 struct lookup_intent *ll_convert_intent(struct open_intent *oit,
549 int ll_prepare_write(struct file *, struct page *, unsigned from, unsigned to);
550 int ll_commit_write(struct file *, struct page *, unsigned from, unsigned to);
551 int ll_writepage(struct page *page);
552 void ll_inode_fill_obdo(struct inode *inode, int cmd, struct obdo *oa);
553 int ll_ap_completion(void *data, int cmd, struct obdo *oa, int rc);
554 int llap_shrink_cache(struct ll_sb_info *sbi, int shrink_fraction);
555 struct ll_async_page *llap_from_page(struct page *page, unsigned origin);
556 extern struct cache_definition ll_cache_definition;
557 void ll_removepage(struct page *page);
558 int ll_readpage(struct file *file, struct page *page);
559 struct ll_async_page *llap_cast_private(struct page *page);
560 void ll_readahead_init(struct inode *inode, struct ll_readahead_state *ras);
561 void ll_ra_accounting(struct ll_async_page *llap,struct address_space *mapping);
562 void ll_truncate(struct inode *inode);
563 int ll_file_punch(struct inode *, loff_t, int);
564 ssize_t ll_file_lockless_io(struct file *, char *, size_t, loff_t *, int);
565 void ll_clear_file_contended(struct inode*);
566 int ll_sync_page_range(struct inode *, struct address_space *, loff_t, size_t);
569 extern struct file_operations ll_file_operations;
570 extern struct file_operations ll_file_operations_flock;
571 extern struct file_operations ll_file_operations_noflock;
572 extern struct inode_operations ll_file_inode_operations;
573 extern int ll_inode_revalidate_it(struct dentry *, struct lookup_intent *);
574 extern int ll_have_md_lock(struct inode *inode, __u64 bits);
575 extern ldlm_mode_t ll_take_md_lock(struct inode *inode, __u64 bits,
576 struct lustre_handle *lockh);
577 int ll_extent_lock(struct ll_file_data *, struct inode *,
578 struct lov_stripe_md *, int mode, ldlm_policy_data_t *,
579 struct lustre_handle *, int ast_flags);
580 int ll_extent_unlock(struct ll_file_data *, struct inode *,
581 struct lov_stripe_md *, int mode, struct lustre_handle *);
582 int ll_file_open(struct inode *inode, struct file *file);
583 int ll_file_release(struct inode *inode, struct file *file);
584 int ll_lsm_getattr(struct obd_export *, struct lov_stripe_md *, struct obdo *);
585 int ll_local_size(struct inode *inode);
586 int ll_glimpse_ioctl(struct ll_sb_info *sbi,
587 struct lov_stripe_md *lsm, lstat_t *st);
588 int ll_glimpse_size(struct inode *inode, int ast_flags);
589 int ll_local_open(struct file *file,
590 struct lookup_intent *it, struct ll_file_data *fd,
591 struct obd_client_handle *och);
592 int ll_release_openhandle(struct dentry *, struct lookup_intent *);
593 int ll_md_close(struct obd_export *md_exp, struct inode *inode,
595 int ll_md_real_close(struct inode *inode, int flags);
596 void ll_epoch_close(struct inode *inode, struct md_op_data *op_data,
597 struct obd_client_handle **och, unsigned long flags);
598 int ll_sizeonmds_update(struct inode *inode, struct md_open_data *data,
599 struct lustre_handle *fh, __u64 ioepoch);
600 int ll_inode_getattr(struct inode *inode, struct obdo *obdo);
601 int ll_md_setattr(struct inode *inode, struct md_op_data *op_data,
602 struct md_open_data **mod);
603 void ll_pack_inode2opdata(struct inode *inode, struct md_op_data *op_data,
604 struct lustre_handle *fh);
605 extern void ll_rw_stats_tally(struct ll_sb_info *sbi, pid_t pid, struct file
606 *file, size_t count, int rw);
607 int ll_getattr_it(struct vfsmount *mnt, struct dentry *de,
608 struct lookup_intent *it, struct kstat *stat);
609 int ll_getattr(struct vfsmount *mnt, struct dentry *de, struct kstat *stat);
610 struct ll_file_data *ll_file_data_get(void);
611 int ll_inode_permission(struct inode *inode, int mask, struct nameidata *nd);
612 int ll_lov_setstripe_ea_info(struct inode *inode, struct file *file,
613 int flags, struct lov_user_md *lum,
615 int ll_lov_getstripe_ea_info(struct inode *inode, const char *filename,
616 struct lov_mds_md **lmm, int *lmm_size,
617 struct ptlrpc_request **request);
618 int ll_dir_setstripe(struct inode *inode, struct lov_user_md *lump,
620 int ll_dir_getstripe(struct inode *inode, struct lov_mds_md **lmm,
621 int *lmm_size, struct ptlrpc_request **request);
624 void ll_intent_drop_lock(struct lookup_intent *);
625 void ll_intent_release(struct lookup_intent *);
626 int ll_drop_dentry(struct dentry *dentry);
627 extern void ll_set_dd(struct dentry *de);
628 int ll_drop_dentry(struct dentry *dentry);
629 void ll_unhash_aliases(struct inode *);
630 void ll_frob_intent(struct lookup_intent **itp, struct lookup_intent *deft);
631 void ll_lookup_finish_locks(struct lookup_intent *it, struct dentry *dentry);
632 int ll_dcompare(struct dentry *parent, struct qstr *d_name, struct qstr *name);
633 int ll_revalidate_it_finish(struct ptlrpc_request *request,
634 struct lookup_intent *it, struct dentry *de);
636 /* llite/llite_lib.c */
637 extern struct super_operations lustre_super_operations;
639 char *ll_read_opt(const char *opt, char *data);
640 void ll_lli_init(struct ll_inode_info *lli);
641 int ll_fill_super(struct super_block *sb);
642 void ll_put_super(struct super_block *sb);
643 void ll_kill_super(struct super_block *sb);
644 struct inode *ll_inode_from_lock(struct ldlm_lock *lock);
645 void ll_clear_inode(struct inode *inode);
646 int ll_setattr_raw(struct inode *inode, struct iattr *attr);
647 int ll_setattr(struct dentry *de, struct iattr *attr);
648 #ifndef HAVE_STATFS_DENTRY_PARAM
649 int ll_statfs(struct super_block *sb, struct kstatfs *sfs);
651 int ll_statfs(struct dentry *de, struct kstatfs *sfs);
653 int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs,
654 __u64 max_age, __u32 flags);
655 void ll_update_inode(struct inode *inode, struct lustre_md *md);
656 void ll_read_inode2(struct inode *inode, void *opaque);
657 void ll_delete_inode(struct inode *inode);
658 int ll_iocontrol(struct inode *inode, struct file *file,
659 unsigned int cmd, unsigned long arg);
660 int ll_flush_ctx(struct inode *inode);
661 #ifdef HAVE_UMOUNTBEGIN_VFSMOUNT
662 void ll_umount_begin(struct vfsmount *vfsmnt, int flags);
664 void ll_umount_begin(struct super_block *sb);
666 int ll_remount_fs(struct super_block *sb, int *flags, char *data);
667 int ll_prep_inode(struct inode **inode, struct ptlrpc_request *req,
668 struct super_block *);
669 void lustre_dump_dentry(struct dentry *, int recur);
670 void lustre_dump_inode(struct inode *);
671 struct ll_async_page *llite_pglist_next_llap(struct ll_sb_info *sbi,
672 struct list_head *list);
673 int ll_obd_statfs(struct inode *inode, void *arg);
674 int ll_get_max_mdsize(struct ll_sb_info *sbi, int *max_mdsize);
675 int ll_process_config(struct lustre_cfg *lcfg);
676 struct md_op_data *ll_prep_md_op_data(struct md_op_data *op_data,
677 struct inode *i1, struct inode *i2,
678 const char *name, int namelen,
679 int mode, __u32 opc, void *data);
680 void ll_finish_md_op_data(struct md_op_data *op_data);
682 /* llite/llite_nfs.c */
683 extern struct export_operations lustre_export_operations;
684 __u32 get_uuid2int(const char *name, int len);
685 struct dentry *ll_fh_to_dentry(struct super_block *sb, __u32 *data, int len,
686 int fhtype, int parent);
687 int ll_dentry_to_fh(struct dentry *, __u32 *datap, int *lenp, int need_parent);
689 /* llite/special.c */
690 extern struct inode_operations ll_special_inode_operations;
691 extern struct file_operations ll_special_chr_inode_fops;
692 extern struct file_operations ll_special_chr_file_fops;
693 extern struct file_operations ll_special_blk_inode_fops;
694 extern struct file_operations ll_special_fifo_inode_fops;
695 extern struct file_operations ll_special_fifo_file_fops;
696 extern struct file_operations ll_special_sock_inode_fops;
698 /* llite/symlink.c */
699 extern struct inode_operations ll_fast_symlink_inode_operations;
701 /* llite/llite_close.c */
702 struct ll_close_queue {
704 struct list_head lcq_head;
705 wait_queue_head_t lcq_waitq;
706 struct completion lcq_comp;
710 void llap_write_pending(struct inode *inode, struct ll_async_page *llap);
711 int llap_write_complete(struct inode *inode, struct ll_async_page *llap);
712 int ll_inode_dirty(struct inode *inode, unsigned long flags);
713 void ll_queue_done_writing(struct inode *inode, unsigned long flags);
714 void ll_close_thread_shutdown(struct ll_close_queue *lcq);
715 int ll_close_thread_start(struct ll_close_queue **lcq_ret);
717 /* llite/llite_mmap.c */
718 typedef struct rb_root rb_root_t;
719 typedef struct rb_node rb_node_t;
721 struct ll_lock_tree_node;
722 struct ll_lock_tree {
724 struct list_head lt_locked_list;
725 struct ll_file_data *lt_fd;
728 int ll_teardown_mmaps(struct address_space *mapping, __u64 first, __u64 last);
729 int ll_file_mmap(struct file * file, struct vm_area_struct * vma);
730 struct ll_lock_tree_node * ll_node_from_inode(struct inode *inode, __u64 start,
731 __u64 end, ldlm_mode_t mode);
732 int ll_tree_lock(struct ll_lock_tree *tree,
733 struct ll_lock_tree_node *first_node,
734 const char *buf, size_t count, int ast_flags);
735 int ll_tree_unlock(struct ll_lock_tree *tree);
737 #define ll_s2sbi(sb) (s2lsi(sb)->lsi_llsbi)
739 static inline __u64 ll_ts2u64(struct timespec *time)
741 __u64 t = time->tv_sec;
745 /* don't need an addref as the sb_info should be holding one */
746 static inline struct obd_export *ll_s2dtexp(struct super_block *sb)
748 return ll_s2sbi(sb)->ll_dt_exp;
751 /* don't need an addref as the sb_info should be holding one */
752 static inline struct obd_export *ll_s2mdexp(struct super_block *sb)
754 return ll_s2sbi(sb)->ll_md_exp;
757 static inline struct client_obd *sbi2mdc(struct ll_sb_info *sbi)
759 struct obd_device *obd = sbi->ll_md_exp->exp_obd;
765 // FIXME: replace the name of this with LL_SB to conform to kernel stuff
766 static inline struct ll_sb_info *ll_i2sbi(struct inode *inode)
768 return ll_s2sbi(inode->i_sb);
771 static inline struct obd_export *ll_i2dtexp(struct inode *inode)
773 return ll_s2dtexp(inode->i_sb);
776 static inline struct obd_export *ll_i2mdexp(struct inode *inode)
778 return ll_s2mdexp(inode->i_sb);
781 static inline struct lu_fid *ll_inode2fid(struct inode *inode)
784 LASSERT(inode != NULL);
785 fid = &ll_i2info(inode)->lli_fid;
786 LASSERT(fid_is_igif(fid) || fid_ver(fid) == 0);
790 static inline int ll_mds_max_easize(struct super_block *sb)
792 return sbi2mdc(ll_s2sbi(sb))->cl_max_mds_easize;
795 static inline __u64 ll_file_maxbytes(struct inode *inode)
797 return ll_i2info(inode)->lli_maxbytes;
801 int ll_setxattr(struct dentry *dentry, const char *name,
802 const void *value, size_t size, int flags);
803 ssize_t ll_getxattr(struct dentry *dentry, const char *name,
804 void *buffer, size_t size);
805 ssize_t ll_listxattr(struct dentry *dentry, char *buffer, size_t size);
806 int ll_removexattr(struct dentry *dentry, const char *name);
808 /* llite/remote_perm.c */
809 extern cfs_mem_cache_t *ll_remote_perm_cachep;
810 extern cfs_mem_cache_t *ll_rmtperm_hash_cachep;
812 struct hlist_head *alloc_rmtperm_hash(void);
813 void free_rmtperm_hash(struct hlist_head *hash);
814 int ll_update_remote_perm(struct inode *inode, struct mdt_remote_perm *perm);
815 int lustre_check_remote_perm(struct inode *inode, int mask);
817 /* llite/llite_fid.c */
818 ino_t ll_fid_build_ino(struct ll_sb_info *sbi, struct lu_fid *fid);
820 /* llite/llite_capa.c */
821 extern cfs_timer_t ll_capa_timer;
823 int ll_capa_thread_start(void);
824 void ll_capa_thread_stop(void);
825 void ll_capa_timer_callback(unsigned long unused);
827 struct obd_capa *ll_add_capa(struct inode *inode, struct obd_capa *ocapa);
828 int ll_update_capa(struct obd_capa *ocapa, struct lustre_capa *capa);
830 void ll_capa_open(struct inode *inode);
831 void ll_capa_close(struct inode *inode);
833 struct obd_capa *ll_mdscapa_get(struct inode *inode);
834 struct obd_capa *ll_osscapa_get(struct inode *inode, __u64 opc);
836 void ll_truncate_free_capa(struct obd_capa *ocapa);
837 void ll_clear_inode_capas(struct inode *inode);
838 void ll_print_capa_stat(struct ll_sb_info *sbi);
840 /* llite/llite_rmtacl.c */
841 #ifdef CONFIG_FS_POSIX_ACL
842 obd_valid rce_ops2valid(int ops);
843 struct rmtacl_ctl_entry *rct_search(struct rmtacl_ctl_table *rct, pid_t key);
844 int rct_add(struct rmtacl_ctl_table *rct, pid_t key, int ops);
845 int rct_del(struct rmtacl_ctl_table *rct, pid_t key);
846 void rct_init(struct rmtacl_ctl_table *rct);
847 void rct_fini(struct rmtacl_ctl_table *rct);
849 void ee_free(struct eacl_entry *ee);
850 int ee_add(struct eacl_table *et, pid_t key, struct lu_fid *fid, int type,
851 ext_acl_xattr_header *header);
852 struct eacl_entry *et_search_del(struct eacl_table *et, pid_t key,
853 struct lu_fid *fid, int type);
854 void et_search_free(struct eacl_table *et, pid_t key);
855 void et_init(struct eacl_table *et);
856 void et_fini(struct eacl_table *et);
859 /* llite ioctl register support rountine */
866 #define LLIOC_MAX_CMD 256
869 * Rules to write a callback function:
872 * @magic: Dynamic ioctl call routine will feed this vaule with the pointer
873 * returned to ll_iocontrol_register. Callback functions should use this
874 * data to check the potential collasion of ioctl cmd. If collasion is
875 * found, callback function should return LLIOC_CONT.
876 * @rcp: The result of ioctl command.
879 * If @magic matches the pointer returned by ll_iocontrol_data, the
880 * callback should return LLIOC_STOP; return LLIOC_STOP otherwise.
882 typedef enum llioc_iter (*llioc_callback_t)(struct inode *inode,
883 struct file *file, unsigned int cmd, unsigned long arg,
884 void *magic, int *rcp);
886 enum llioc_iter ll_iocontrol_call(struct inode *inode, struct file *file,
887 unsigned int cmd, unsigned long arg, int *rcp);
889 /* export functions */
890 /* Register ioctl block dynamatically for a regular file.
892 * @cmd: the array of ioctl command set
893 * @count: number of commands in the @cmd
894 * @cb: callback function, it will be called if an ioctl command is found to
895 * belong to the command list @cmd.
898 * A magic pointer will be returned if success;
899 * otherwise, NULL will be returned.
901 void *ll_iocontrol_register(llioc_callback_t cb, int count, unsigned int *cmd);
902 void ll_iocontrol_unregister(void *magic);
906 #endif /* LLITE_INTERNAL_H */