1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
30 * Use is subject to license terms.
33 * Copyright (c) 2011 Whamcloud, Inc.
36 * This file is part of Lustre, http://www.lustre.org/
37 * Lustre is a trademark of Sun Microsystems, Inc.
40 #ifndef LLITE_INTERNAL_H
41 #define LLITE_INTERNAL_H
43 #include <lustre_acl.h>
45 #include <lustre_debug.h>
46 #include <lustre_ver.h>
47 #include <lustre_disk.h> /* for s2sbi */
48 #include <lustre_eacl.h>
50 /* for struct cl_lock_descr and struct cl_io */
51 #include <cl_object.h>
53 #include <lustre_mdc.h>
54 #include <linux/lustre_intent.h>
60 #ifndef VM_FAULT_RETRY
61 #define VM_FAULT_RETRY 0
64 /** Only used on client-side for indicating the tail of dir hash/offset. */
65 #define LL_DIR_END_OFF 0x7fffffffffffffffULL
66 #define LL_DIR_END_OFF_32BIT 0x7fffffffUL
68 #ifndef DCACHE_LUSTRE_INVALID
69 #define DCACHE_LUSTRE_INVALID 0x4000000
72 #define LL_IT2STR(it) ((it) ? ldlm_it2str((it)->it_op) : "0")
73 #define LUSTRE_FPRIVATE(file) ((file)->private_data)
75 struct ll_dentry_data {
78 struct obd_client_handle lld_cwd_och;
79 struct obd_client_handle lld_mnt_och;
80 struct lookup_intent *lld_it;
81 unsigned int lld_sa_generation;
84 #define ll_d2d(de) ((struct ll_dentry_data*)((de)->d_fsdata))
86 extern struct file_operations ll_pgcache_seq_fops;
88 #define LLI_INODE_MAGIC 0x111d0de5
89 #define LLI_INODE_DEAD 0xdeadd00d
91 /* remote client permission cache */
92 #define REMOTE_PERM_HASHSIZE 16
94 struct ll_getname_data {
95 char *lgd_name; /* points to a buffer with NAME_MAX+1 size */
96 struct lu_fid lgd_fid; /* target fid we are looking for */
97 int lgd_found; /* inode matched? */
100 /* llite setxid/access permission for user on remote client */
101 struct ll_remote_perm {
102 cfs_hlist_node_t lrp_list;
107 int lrp_access_perm; /* MAY_READ/WRITE/EXEC, this
108 is access permission with
109 lrp_fsuid/lrp_fsgid. */
113 /* MDS has an authority for the Size-on-MDS attributes. */
114 LLIF_MDS_SIZE_LOCK = (1 << 0),
115 /* Epoch close is postponed. */
116 LLIF_EPOCH_PENDING = (1 << 1),
117 /* DONE WRITING is allowed. */
118 LLIF_DONE_WRITING = (1 << 2),
119 /* Sizeon-on-MDS attributes are changed. An attribute update needs to
121 LLIF_SOM_DIRTY = (1 << 3),
122 /* File is contented */
123 LLIF_CONTENDED = (1 << 4),
124 /* Truncate uses server lock for this file */
125 LLIF_SRVLOCK = (1 << 5),
129 struct ll_inode_info {
130 __u32 lli_inode_magic;
134 cfs_spinlock_t lli_lock;
135 struct posix_acl *lli_posix_acl;
137 cfs_hlist_head_t *lli_remote_perms;
138 cfs_semaphore_t lli_rmtperm_sem;
140 /* identifying fields for both metadata and data stacks. */
141 struct lu_fid lli_fid;
142 /* Parent fid for accessing default stripe data on parent directory
143 * for allocating OST objects after a mknod() and later open-by-FID. */
144 struct lu_fid lli_pfid;
146 cfs_list_t lli_close_list;
147 cfs_list_t lli_oss_capas;
148 /* open count currently used by capability only, indicate whether
149 * capability needs renewal */
150 cfs_atomic_t lli_open_count;
151 struct obd_capa *lli_mds_capa;
152 cfs_time_t lli_rmtperm_time;
154 /* handle is to be sent to MDS later on done_writing and setattr.
155 * Open handle data are needed for the recovery to reconstruct
156 * the inode state on the MDS. XXX: recovery is not ready yet. */
157 struct obd_client_handle *lli_pending_och;
159 /* We need all three because every inode may be opened in different
161 struct obd_client_handle *lli_mds_read_och;
162 struct obd_client_handle *lli_mds_write_och;
163 struct obd_client_handle *lli_mds_exec_och;
164 __u64 lli_open_fd_read_count;
165 __u64 lli_open_fd_write_count;
166 __u64 lli_open_fd_exec_count;
167 /* Protects access to och pointers and their usage counters, also
168 * atomicity of check-update of lli_smd */
169 cfs_semaphore_t lli_och_sem;
171 struct inode lli_vfs_inode;
173 /* the most recent timestamps obtained from mds */
174 struct ost_lvb lli_lvb;
176 /* Try to make the d::member and f::member are aligned. Before using
177 * these members, make clear whether it is directory or not. */
181 /* serialize normal readdir and statahead-readdir. */
182 cfs_semaphore_t d_readdir_sem;
184 /* metadata statahead */
185 /* since parent-child threads can share the same @file
186 * struct, "opendir_key" is the token when dir close for
187 * case of parent exit before child -- it is me should
188 * cleanup the dir readahead. */
190 struct ll_statahead_info *d_sai;
192 struct posix_acl *d_def_acl;
193 /* protect statahead stuff. */
194 cfs_spinlock_t d_sa_lock;
195 /* "opendir_pid" is the token when lookup/revalid
196 * -- I am the owner of dir statahead. */
200 #define lli_readdir_sem u.d.d_readdir_sem
201 #define lli_opendir_key u.d.d_opendir_key
202 #define lli_sai u.d.d_sai
203 #define lli_sa_pos u.d.d_sa_pos
204 #define lli_def_acl u.d.d_def_acl
205 #define lli_sa_lock u.d.d_sa_lock
206 #define lli_opendir_pid u.d.d_opendir_pid
208 /* for non-directory */
210 cfs_semaphore_t f_size_sem;
211 void *f_size_sem_owner;
212 char *f_symlink_name;
215 * cfs_rw_semaphore_t {
216 * signed long count; // align u.d.d_def_acl
217 * cfs_spinlock_t wait_lock; // align u.d.d_sa_lock
218 * struct list_head wait_list;
221 cfs_rw_semaphore_t f_trunc_sem;
222 cfs_semaphore_t f_write_sem;
224 /* for writepage() only to communicate to fsync */
229 #define lli_size_sem u.f.f_size_sem
230 #define lli_size_sem_owner u.f.f_size_sem_owner
231 #define lli_symlink_name u.f.f_symlink_name
232 #define lli_maxbytes u.f.f_maxbytes
233 #define lli_trunc_sem u.f.f_trunc_sem
234 #define lli_write_sem u.f.f_write_sem
235 #define lli_async_rc u.f.f_async_rc
236 #define lli_write_rc u.f.f_write_rc
240 /* XXX: For following frequent used members, although they maybe special
241 * used for non-directory object, it is some time-wasting to check
242 * whether the object is directory or not before using them. On the
243 * other hand, currently, sizeof(f) > sizeof(d), it cannot reduce
244 * the "ll_inode_info" size even if moving those members into u.f.
245 * So keep them out side.
247 * In the future, if more members are added only for directory,
248 * some of the following members can be moved into u.f.
250 struct lov_stripe_md *lli_smd;
251 struct cl_object *lli_clob;
255 * Locking to guarantee consistency of non-atomic updates to long long i_size,
256 * consistency between file size and KMS, and consistency within
257 * ->lli_smd->lsm_oinfo[]'s.
259 * Implemented by ->lli_size_sem and ->lsm_sem, nested in that order.
262 void ll_inode_size_lock(struct inode *inode, int lock_lsm);
263 void ll_inode_size_unlock(struct inode *inode, int unlock_lsm);
265 // FIXME: replace the name of this with LL_I to conform to kernel stuff
266 // static inline struct ll_inode_info *LL_I(struct inode *inode)
267 static inline struct ll_inode_info *ll_i2info(struct inode *inode)
269 return container_of(inode, struct ll_inode_info, lli_vfs_inode);
272 /* default to about 40meg of readahead on a given system. That much tied
273 * up in 512k readahead requests serviced at 40ms each is about 1GB/s. */
274 #define SBI_DEFAULT_READAHEAD_MAX (40UL << (20 - CFS_PAGE_SHIFT))
276 /* default to read-ahead full files smaller than 2MB on the second read */
277 #define SBI_DEFAULT_READAHEAD_WHOLE_MAX (2UL << (20 - CFS_PAGE_SHIFT))
282 RA_STAT_DISTANT_READPAGE,
283 RA_STAT_MISS_IN_WINDOW,
284 RA_STAT_FAILED_GRAB_PAGE,
285 RA_STAT_FAILED_MATCH,
290 RA_STAT_MAX_IN_FLIGHT,
291 RA_STAT_WRONG_GRAB_PAGE,
296 cfs_atomic_t ra_cur_pages;
297 unsigned long ra_max_pages;
298 unsigned long ra_max_pages_per_file;
299 unsigned long ra_max_read_ahead_whole_pages;
302 /* ra_io_arg will be filled in the beginning of ll_readahead with
303 * ras_lock, then the following ll_read_ahead_pages will read RA
304 * pages according to this arg, all the items in this structure are
305 * counted by page index.
308 unsigned long ria_start; /* start offset of read-ahead*/
309 unsigned long ria_end; /* end offset of read-ahead*/
310 /* If stride read pattern is detected, ria_stoff means where
311 * stride read is started. Note: for normal read-ahead, the
312 * value here is meaningless, and also it will not be accessed*/
314 /* ria_length and ria_pages are the length and pages length in the
315 * stride I/O mode. And they will also be used to check whether
316 * it is stride I/O read-ahead in the read-ahead pages*/
317 unsigned long ria_length;
318 unsigned long ria_pages;
321 /* LL_HIST_MAX=32 causes an overflow */
322 #define LL_HIST_MAX 28
323 #define LL_HIST_START 12 /* buckets start at 2^12 = 4k */
324 #define LL_PROCESS_HIST_MAX 10
325 struct per_process_info {
327 struct obd_histogram pp_r_hist;
328 struct obd_histogram pp_w_hist;
331 /* pp_extents[LL_PROCESS_HIST_MAX] will hold the combined process info */
332 struct ll_rw_extents_info {
333 struct per_process_info pp_extents[LL_PROCESS_HIST_MAX + 1];
336 #define LL_OFFSET_HIST_MAX 100
337 struct ll_rw_process_info {
340 loff_t rw_range_start;
342 loff_t rw_last_file_pos;
344 size_t rw_smallest_extent;
345 size_t rw_largest_extent;
346 struct ll_file_data *rw_last_file;
349 enum stats_track_type {
350 STATS_TRACK_ALL = 0, /* track all processes */
351 STATS_TRACK_PID, /* track process with this pid */
352 STATS_TRACK_PPID, /* track processes with this ppid */
353 STATS_TRACK_GID, /* track processes with this gid */
357 /* flags for sbi->ll_flags */
358 #define LL_SBI_NOLCK 0x01 /* DLM locking disabled (directio-only) */
359 #define LL_SBI_CHECKSUM 0x02 /* checksum each page as it's written */
360 #define LL_SBI_FLOCK 0x04
361 #define LL_SBI_USER_XATTR 0x08 /* support user xattr */
362 #define LL_SBI_ACL 0x10 /* support ACL */
363 #define LL_SBI_RMT_CLIENT 0x40 /* remote client */
364 #define LL_SBI_MDS_CAPA 0x80 /* support mds capa */
365 #define LL_SBI_OSS_CAPA 0x100 /* support oss capa */
366 #define LL_SBI_LOCALFLOCK 0x200 /* Local flocks support by kernel */
367 #define LL_SBI_LRU_RESIZE 0x400 /* lru resize support */
368 #define LL_SBI_LAZYSTATFS 0x800 /* lazystatfs mount option */
369 #define LL_SBI_SOM_PREVIEW 0x1000 /* SOM preview mount option */
370 #define LL_SBI_32BIT_API 0x2000 /* generate 32 bit inodes. */
371 #define LL_SBI_64BIT_HASH 0x4000 /* support 64-bits dir hash/offset */
373 /* default value for ll_sb_info->contention_time */
374 #define SBI_DEFAULT_CONTENTION_SECONDS 60
375 /* default value for lockless_truncate_enable */
376 #define SBI_DEFAULT_LOCKLESS_TRUNCATE_ENABLE 1
377 #define RCE_HASHES 32
379 struct rmtacl_ctl_entry {
381 pid_t rce_key; /* hash key */
382 int rce_ops; /* acl operation type */
385 struct rmtacl_ctl_table {
386 cfs_spinlock_t rct_lock;
387 cfs_list_t rct_entries[RCE_HASHES];
394 pid_t ee_key; /* hash key */
395 struct lu_fid ee_fid;
396 int ee_type; /* ACL type for ACCESS or DEFAULT */
397 ext_acl_xattr_header *ee_acl;
401 cfs_spinlock_t et_lock;
402 cfs_list_t et_entries[EE_HASHES];
407 /* this protects pglist and ra_info. It isn't safe to
408 * grab from interrupt contexts */
409 cfs_spinlock_t ll_lock;
410 cfs_spinlock_t ll_pp_extent_lock; /* Lock for pp_extent entries */
411 cfs_spinlock_t ll_process_lock; /* Lock for ll_rw_process_info */
412 struct obd_uuid ll_sb_uuid;
413 struct obd_export *ll_md_exp;
414 struct obd_export *ll_dt_exp;
415 struct proc_dir_entry* ll_proc_root;
416 struct lu_fid ll_root_fid; /* root object fid */
419 cfs_list_t ll_conn_chain; /* per-conn chain of SBs */
420 struct lustre_client_ocd ll_lco;
422 cfs_list_t ll_orphan_dentry_list; /*please don't ask -p*/
423 struct ll_close_queue *ll_lcq;
425 struct lprocfs_stats *ll_stats; /* lprocfs stats counter */
427 unsigned long ll_async_page_max;
428 unsigned long ll_async_page_count;
430 struct lprocfs_stats *ll_ra_stats;
432 struct ll_ra_info ll_ra_info;
433 unsigned int ll_namelen;
434 struct file_operations *ll_fop;
436 /* =0 - hold lock over whole read/write
437 * >0 - max. chunk to be read/written w/o lock re-acquiring */
438 unsigned long ll_max_rw_chunk;
439 unsigned int ll_md_brw_size; /* used by readdir */
441 struct lu_site *ll_site;
442 struct cl_device *ll_cl;
444 struct ll_rw_extents_info ll_rw_extents_info;
445 int ll_extent_process_count;
446 struct ll_rw_process_info ll_rw_process_info[LL_PROCESS_HIST_MAX];
447 unsigned int ll_offset_process_count;
448 struct ll_rw_process_info ll_rw_offset_info[LL_OFFSET_HIST_MAX];
449 unsigned int ll_rw_offset_entry_count;
450 enum stats_track_type ll_stats_track_type;
451 int ll_stats_track_id;
454 /* metadata stat-ahead */
455 unsigned int ll_sa_max; /* max statahead RPCs */
456 atomic_t ll_sa_total; /* statahead thread started
458 atomic_t ll_sa_wrong; /* statahead thread stopped for
461 dev_t ll_sdev_orig; /* save s_dev before assign for
463 struct rmtacl_ctl_table ll_rct;
464 struct eacl_table ll_et;
465 struct vfsmount *ll_mnt;
468 #define LL_DEFAULT_MAX_RW_CHUNK (32 * 1024 * 1024)
473 struct task_struct *lrr_reader;
474 cfs_list_t lrr_linkage;
478 * per file-descriptor read-ahead data.
480 struct ll_readahead_state {
481 cfs_spinlock_t ras_lock;
483 * index of the last page that read(2) needed and that wasn't in the
484 * cache. Used by ras_update() to detect seeks.
486 * XXX nikita: if access seeks into cached region, Lustre doesn't see
489 unsigned long ras_last_readpage;
491 * number of pages read after last read-ahead window reset. As window
492 * is reset on each seek, this is effectively a number of consecutive
493 * accesses. Maybe ->ras_accessed_in_window is better name.
495 * XXX nikita: window is also reset (by ras_update()) when Lustre
496 * believes that memory pressure evicts read-ahead pages. In that
497 * case, it probably doesn't make sense to expand window to
498 * PTLRPC_MAX_BRW_PAGES on the third access.
500 unsigned long ras_consecutive_pages;
502 * number of read requests after the last read-ahead window reset
503 * As window is reset on each seek, this is effectively the number
504 * on consecutive read request and is used to trigger read-ahead.
506 unsigned long ras_consecutive_requests;
508 * Parameters of current read-ahead window. Handled by
509 * ras_update(). On the initial access to the file or after a seek,
510 * window is reset to 0. After 3 consecutive accesses, window is
511 * expanded to PTLRPC_MAX_BRW_PAGES. Afterwards, window is enlarged by
512 * PTLRPC_MAX_BRW_PAGES chunks up to ->ra_max_pages.
514 unsigned long ras_window_start, ras_window_len;
516 * Where next read-ahead should start at. This lies within read-ahead
517 * window. Read-ahead window is read in pieces rather than at once
518 * because: 1. lustre limits total number of pages under read-ahead by
519 * ->ra_max_pages (see ll_ra_count_get()), 2. client cannot read pages
520 * not covered by DLM lock.
522 unsigned long ras_next_readahead;
524 * Total number of ll_file_read requests issued, reads originating
525 * due to mmap are not counted in this total. This value is used to
526 * trigger full file read-ahead after multiple reads to a small file.
528 unsigned long ras_requests;
530 * Page index with respect to the current request, these value
531 * will not be accurate when dealing with reads issued via mmap.
533 unsigned long ras_request_index;
535 * list of struct ll_ra_read's one per read(2) call current in
536 * progress against this file descriptor. Used by read-ahead code,
537 * protected by ->ras_lock.
539 cfs_list_t ras_read_beads;
541 * The following 3 items are used for detecting the stride I/O
543 * In stride I/O mode,
544 * ...............|-----data-----|****gap*****|--------|******|....
545 * offset |-stride_pages-|-stride_gap-|
546 * ras_stride_offset = offset;
547 * ras_stride_length = stride_pages + stride_gap;
548 * ras_stride_pages = stride_pages;
549 * Note: all these three items are counted by pages.
551 unsigned long ras_stride_length;
552 unsigned long ras_stride_pages;
553 pgoff_t ras_stride_offset;
555 * number of consecutive stride request count, and it is similar as
556 * ras_consecutive_requests, but used for stride I/O mode.
557 * Note: only more than 2 consecutive stride request are detected,
558 * stride read-ahead will be enable
560 unsigned long ras_consecutive_stride_requests;
568 extern cfs_mem_cache_t *ll_file_data_slab;
569 struct lustre_handle;
570 struct ll_file_data {
571 struct ll_readahead_state fd_ras;
573 struct ccc_grouplock fd_grouplock;
574 struct ll_file_dir fd_dir;
576 struct file *fd_file;
579 struct lov_stripe_md;
581 extern cfs_spinlock_t inode_lock;
583 extern struct proc_dir_entry *proc_lustre_fs_root;
585 static inline struct inode *ll_info2i(struct ll_inode_info *lli)
587 return &lli->lli_vfs_inode;
591 struct inode *icbd_parent;
592 struct dentry **icbd_childp;
596 __u32 ll_i2suppgid(struct inode *i);
597 void ll_i2gids(__u32 *suppgids, struct inode *i1,struct inode *i2);
599 static inline int ll_need_32bit_api(struct ll_sb_info *sbi)
601 #if BITS_PER_LONG == 32
604 return unlikely(cfs_curproc_is_32bit() || (sbi->ll_flags & LL_SBI_32BIT_API));
608 #define LLAP_MAGIC 98764321
610 extern cfs_mem_cache_t *ll_async_page_slab;
611 extern size_t ll_async_page_slab_size;
613 void ll_ra_read_in(struct file *f, struct ll_ra_read *rar);
614 void ll_ra_read_ex(struct file *f, struct ll_ra_read *rar);
615 struct ll_ra_read *ll_ra_read_get(struct file *f);
617 /* llite/lproc_llite.c */
619 int lprocfs_register_mountpoint(struct proc_dir_entry *parent,
620 struct super_block *sb, char *osc, char *mdc);
621 void lprocfs_unregister_mountpoint(struct ll_sb_info *sbi);
622 void ll_stats_ops_tally(struct ll_sb_info *sbi, int op, int count);
623 void lprocfs_llite_init_vars(struct lprocfs_static_vars *lvars);
625 static inline int lprocfs_register_mountpoint(struct proc_dir_entry *parent,
626 struct super_block *sb, char *osc, char *mdc){return 0;}
627 static inline void lprocfs_unregister_mountpoint(struct ll_sb_info *sbi) {}
628 static void ll_stats_ops_tally(struct ll_sb_info *sbi, int op, int count) {}
629 static void lprocfs_llite_init_vars(struct lprocfs_static_vars *lvars)
631 memset(lvars, 0, sizeof(*lvars));
637 void ll_release_page(struct page *page, int remove);
638 extern struct file_operations ll_dir_operations;
639 extern struct inode_operations ll_dir_inode_operations;
640 struct page *ll_get_dir_page(struct file *filp, struct inode *dir, __u64 hash,
641 struct ll_dir_chain *chain);
642 int ll_readdir(struct file *filp, void *cookie, filldir_t filldir);
644 int ll_get_mdt_idx(struct inode *inode);
646 int ll_objects_destroy(struct ptlrpc_request *request,
648 struct inode *ll_iget(struct super_block *sb, ino_t hash,
649 struct lustre_md *lic);
650 int ll_md_blocking_ast(struct ldlm_lock *, struct ldlm_lock_desc *,
651 void *data, int flag);
652 struct lookup_intent *ll_convert_intent(struct open_intent *oit,
654 int ll_lookup_it_finish(struct ptlrpc_request *request,
655 struct lookup_intent *it, void *data);
656 struct dentry *ll_find_alias(struct inode *inode, struct dentry *de);
659 int ll_prepare_write(struct file *, struct page *, unsigned from, unsigned to);
660 int ll_commit_write(struct file *, struct page *, unsigned from, unsigned to);
661 int ll_writepage(struct page *page, struct writeback_control *wbc);
662 void ll_removepage(struct page *page);
663 int ll_readpage(struct file *file, struct page *page);
664 void ll_readahead_init(struct inode *inode, struct ll_readahead_state *ras);
665 void ll_truncate(struct inode *inode);
666 int ll_file_punch(struct inode *, loff_t, int);
667 ssize_t ll_file_lockless_io(struct file *, char *, size_t, loff_t *, int);
668 void ll_clear_file_contended(struct inode*);
669 int ll_sync_page_range(struct inode *, struct address_space *, loff_t, size_t);
670 int ll_readahead(const struct lu_env *env, struct cl_io *io,
671 struct ll_readahead_state *ras, struct address_space *mapping,
672 struct cl_page_list *queue, int flags);
675 extern struct file_operations ll_file_operations;
676 extern struct file_operations ll_file_operations_flock;
677 extern struct file_operations ll_file_operations_noflock;
678 extern struct inode_operations ll_file_inode_operations;
679 extern int ll_inode_revalidate_it(struct dentry *, struct lookup_intent *,
681 extern int ll_have_md_lock(struct inode *inode, __u64 *bits,
682 ldlm_mode_t l_req_mode);
683 extern ldlm_mode_t ll_take_md_lock(struct inode *inode, __u64 bits,
684 struct lustre_handle *lockh);
685 int __ll_inode_revalidate_it(struct dentry *, struct lookup_intent *,
687 int ll_revalidate_nd(struct dentry *dentry, struct nameidata *nd);
688 int ll_file_open(struct inode *inode, struct file *file);
689 int ll_file_release(struct inode *inode, struct file *file);
690 int ll_glimpse_ioctl(struct ll_sb_info *sbi,
691 struct lov_stripe_md *lsm, lstat_t *st);
692 void ll_ioepoch_open(struct ll_inode_info *lli, __u64 ioepoch);
693 int ll_local_open(struct file *file,
694 struct lookup_intent *it, struct ll_file_data *fd,
695 struct obd_client_handle *och);
696 int ll_release_openhandle(struct dentry *, struct lookup_intent *);
697 int ll_md_close(struct obd_export *md_exp, struct inode *inode,
699 int ll_md_real_close(struct inode *inode, int flags);
700 void ll_ioepoch_close(struct inode *inode, struct md_op_data *op_data,
701 struct obd_client_handle **och, unsigned long flags);
702 void ll_done_writing_attr(struct inode *inode, struct md_op_data *op_data);
703 int ll_som_update(struct inode *inode, struct md_op_data *op_data);
704 int ll_inode_getattr(struct inode *inode, struct obdo *obdo,
705 __u64 ioepoch, int sync);
706 int ll_md_setattr(struct inode *inode, struct md_op_data *op_data,
707 struct md_open_data **mod);
708 void ll_pack_inode2opdata(struct inode *inode, struct md_op_data *op_data,
709 struct lustre_handle *fh);
710 extern void ll_rw_stats_tally(struct ll_sb_info *sbi, pid_t pid,
711 struct ll_file_data *file, loff_t pos,
712 size_t count, int rw);
713 int ll_getattr_it(struct vfsmount *mnt, struct dentry *de,
714 struct lookup_intent *it, struct kstat *stat);
715 int ll_getattr(struct vfsmount *mnt, struct dentry *de, struct kstat *stat);
716 struct ll_file_data *ll_file_data_get(void);
717 #ifdef HAVE_GENERIC_PERMISSION_4ARGS
718 int ll_inode_permission(struct inode *inode, int mask, unsigned int flags);
720 # ifndef HAVE_INODE_PERMISION_2ARGS
721 int ll_inode_permission(struct inode *inode, int mask, struct nameidata *nd);
723 int ll_inode_permission(struct inode *inode, int mask);
726 int ll_lov_setstripe_ea_info(struct inode *inode, struct file *file,
727 int flags, struct lov_user_md *lum,
729 int ll_lov_getstripe_ea_info(struct inode *inode, const char *filename,
730 struct lov_mds_md **lmm, int *lmm_size,
731 struct ptlrpc_request **request);
732 int ll_dir_setstripe(struct inode *inode, struct lov_user_md *lump,
734 int ll_dir_getstripe(struct inode *inode, struct lov_mds_md **lmm,
735 int *lmm_size, struct ptlrpc_request **request);
736 int ll_fsync(struct file *file, struct dentry *dentry, int data);
737 int ll_do_fiemap(struct inode *inode, struct ll_user_fiemap *fiemap,
739 int ll_merge_lvb(struct inode *inode);
740 int ll_get_grouplock(struct inode *inode, struct file *file, unsigned long arg);
741 int ll_put_grouplock(struct inode *inode, struct file *file, unsigned long arg);
742 int ll_fid2path(struct obd_export *exp, void *arg);
745 int ll_dops_init(struct dentry *de, int block, int init_sa);
746 extern cfs_spinlock_t ll_lookup_lock;
747 extern struct dentry_operations ll_d_ops;
748 void ll_intent_drop_lock(struct lookup_intent *);
749 void ll_intent_release(struct lookup_intent *);
750 int ll_drop_dentry(struct dentry *dentry);
751 void ll_unhash_aliases(struct inode *);
752 void ll_frob_intent(struct lookup_intent **itp, struct lookup_intent *deft);
753 void ll_lookup_finish_locks(struct lookup_intent *it, struct dentry *dentry);
754 int ll_dcompare(struct dentry *parent, struct qstr *d_name, struct qstr *name);
755 int ll_revalidate_it_finish(struct ptlrpc_request *request,
756 struct lookup_intent *it, struct dentry *de);
758 /* llite/llite_lib.c */
759 extern struct super_operations lustre_super_operations;
761 char *ll_read_opt(const char *opt, char *data);
762 void ll_lli_init(struct ll_inode_info *lli);
763 int ll_fill_super(struct super_block *sb, struct vfsmount *mnt);
764 void ll_put_super(struct super_block *sb);
765 void ll_kill_super(struct super_block *sb);
766 struct inode *ll_inode_from_lock(struct ldlm_lock *lock);
767 void ll_clear_inode(struct inode *inode);
768 int ll_setattr_raw(struct inode *inode, struct iattr *attr);
769 int ll_setattr(struct dentry *de, struct iattr *attr);
770 #ifndef HAVE_STATFS_DENTRY_PARAM
771 int ll_statfs(struct super_block *sb, struct kstatfs *sfs);
773 int ll_statfs(struct dentry *de, struct kstatfs *sfs);
775 int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs,
776 __u64 max_age, __u32 flags);
777 void ll_update_inode(struct inode *inode, struct lustre_md *md);
778 void ll_read_inode2(struct inode *inode, void *opaque);
779 void ll_delete_inode(struct inode *inode);
780 int ll_iocontrol(struct inode *inode, struct file *file,
781 unsigned int cmd, unsigned long arg);
782 int ll_flush_ctx(struct inode *inode);
783 #ifdef HAVE_UMOUNTBEGIN_VFSMOUNT
784 void ll_umount_begin(struct vfsmount *vfsmnt, int flags);
786 void ll_umount_begin(struct super_block *sb);
788 int ll_remount_fs(struct super_block *sb, int *flags, char *data);
789 int ll_show_options(struct seq_file *seq, struct vfsmount *vfs);
790 int ll_prep_inode(struct inode **inode, struct ptlrpc_request *req,
791 struct super_block *);
792 void lustre_dump_dentry(struct dentry *, int recur);
793 void lustre_dump_inode(struct inode *);
794 int ll_obd_statfs(struct inode *inode, void *arg);
795 int ll_get_max_mdsize(struct ll_sb_info *sbi, int *max_mdsize);
796 int ll_process_config(struct lustre_cfg *lcfg);
797 struct md_op_data *ll_prep_md_op_data(struct md_op_data *op_data,
798 struct inode *i1, struct inode *i2,
799 const char *name, int namelen,
800 int mode, __u32 opc, void *data);
801 void ll_finish_md_op_data(struct md_op_data *op_data);
803 /* llite/llite_nfs.c */
804 extern struct export_operations lustre_export_operations;
805 __u32 get_uuid2int(const char *name, int len);
807 /* llite/special.c */
808 extern struct inode_operations ll_special_inode_operations;
809 extern struct file_operations ll_special_chr_inode_fops;
810 extern struct file_operations ll_special_chr_file_fops;
811 extern struct file_operations ll_special_blk_inode_fops;
812 extern struct file_operations ll_special_fifo_inode_fops;
813 extern struct file_operations ll_special_fifo_file_fops;
814 extern struct file_operations ll_special_sock_inode_fops;
816 /* llite/symlink.c */
817 extern struct inode_operations ll_fast_symlink_inode_operations;
819 /* llite/llite_close.c */
820 struct ll_close_queue {
821 cfs_spinlock_t lcq_lock;
823 cfs_waitq_t lcq_waitq;
824 cfs_completion_t lcq_comp;
825 cfs_atomic_t lcq_stop;
828 struct ccc_object *cl_inode2ccc(struct inode *inode);
831 void vvp_write_pending (struct ccc_object *club, struct ccc_page *page);
832 void vvp_write_complete(struct ccc_object *club, struct ccc_page *page);
834 /* specific achitecture can implement only part of this list */
835 enum vvp_io_subtype {
838 /** io called from .sendfile */
840 /** io started from splice_{read|write} */
847 enum vvp_io_subtype cui_io_subtype;
851 read_actor_t cui_actor;
855 struct pipe_inode_info *cui_pipe;
856 unsigned int cui_flags;
858 struct vvp_fault_io {
860 * Inode modification time that is checked across DLM
864 struct vm_area_struct *ft_vma;
866 * locked page returned from vvp_io
868 cfs_page_t *ft_vmpage;
869 #ifndef HAVE_VM_OP_FAULT
870 struct vm_nopage_api {
872 * Virtual address at which fault occurred.
874 unsigned long ft_address;
876 * Fault type, as to be supplied to
882 struct vm_fault_api {
886 struct vm_fault *ft_vmf;
888 * fault API used bitflags for return code.
890 unsigned int ft_flags;
896 * Read-ahead state used by read and page-fault IO contexts.
898 struct ll_ra_read cui_bead;
900 * Set when cui_bead has been initialized.
902 int cui_ra_window_set;
904 * Partially truncated page, that vvp_io_trunc_start() keeps locked
907 struct cl_page *cui_partpage;
911 * IO arguments for various VFS I/O interfaces.
914 /** normal/sendfile/splice */
915 enum vvp_io_subtype via_io_subtype;
919 #ifndef HAVE_FILE_WRITEV
920 struct kiocb *via_iocb;
922 struct iovec *via_iov;
923 unsigned long via_nrsegs;
926 read_actor_t via_actor;
930 struct pipe_inode_info *via_pipe;
931 unsigned int via_flags;
936 struct ll_cl_context {
938 struct cl_io *lcc_io;
939 struct cl_page *lcc_page;
940 struct lu_env *lcc_env;
945 struct vvp_thread_info {
946 struct ost_lvb vti_lvb;
947 struct cl_2queue vti_queue;
948 struct iovec vti_local_iov;
949 struct vvp_io_args vti_args;
950 struct ra_io_arg vti_ria;
951 struct kiocb vti_kiocb;
952 struct ll_cl_context vti_io_ctx;
955 static inline struct vvp_thread_info *vvp_env_info(const struct lu_env *env)
957 extern struct lu_context_key vvp_key;
958 struct vvp_thread_info *info;
960 info = lu_context_key_get(&env->le_ctx, &vvp_key);
961 LASSERT(info != NULL);
965 static inline struct vvp_io_args *vvp_env_args(const struct lu_env *env,
966 enum vvp_io_subtype type)
968 struct vvp_io_args *ret = &vvp_env_info(env)->vti_args;
970 ret->via_io_subtype = type;
976 struct vvp_io vs_ios;
979 static inline struct vvp_session *vvp_env_session(const struct lu_env *env)
981 extern struct lu_context_key vvp_session_key;
982 struct vvp_session *ses;
984 ses = lu_context_key_get(env->le_ses, &vvp_session_key);
985 LASSERT(ses != NULL);
989 static inline struct vvp_io *vvp_env_io(const struct lu_env *env)
991 return &vvp_env_session(env)->vs_ios;
994 void ll_queue_done_writing(struct inode *inode, unsigned long flags);
995 void ll_close_thread_shutdown(struct ll_close_queue *lcq);
996 int ll_close_thread_start(struct ll_close_queue **lcq_ret);
998 /* llite/llite_mmap.c */
999 typedef struct rb_root rb_root_t;
1000 typedef struct rb_node rb_node_t;
1002 struct ll_lock_tree_node;
1003 struct ll_lock_tree {
1005 cfs_list_t lt_locked_list;
1006 struct ll_file_data *lt_fd;
1009 int ll_teardown_mmaps(struct address_space *mapping, __u64 first, __u64 last);
1010 int ll_file_mmap(struct file * file, struct vm_area_struct * vma);
1011 struct ll_lock_tree_node * ll_node_from_inode(struct inode *inode, __u64 start,
1012 __u64 end, ldlm_mode_t mode);
1013 void policy_from_vma(ldlm_policy_data_t *policy,
1014 struct vm_area_struct *vma, unsigned long addr, size_t count);
1015 struct vm_area_struct *our_vma(unsigned long addr, size_t count);
1017 static inline void ll_invalidate_page(struct page *vmpage)
1019 struct address_space *mapping = vmpage->mapping;
1020 loff_t offset = vmpage->index << PAGE_CACHE_SHIFT;
1022 LASSERT(PageLocked(vmpage));
1023 if (mapping == NULL)
1026 ll_teardown_mmaps(mapping, offset, offset + CFS_PAGE_SIZE);
1027 truncate_complete_page(mapping, vmpage);
1030 #define ll_s2sbi(sb) (s2lsi(sb)->lsi_llsbi)
1032 /* don't need an addref as the sb_info should be holding one */
1033 static inline struct obd_export *ll_s2dtexp(struct super_block *sb)
1035 return ll_s2sbi(sb)->ll_dt_exp;
1038 /* don't need an addref as the sb_info should be holding one */
1039 static inline struct obd_export *ll_s2mdexp(struct super_block *sb)
1041 return ll_s2sbi(sb)->ll_md_exp;
1044 static inline struct client_obd *sbi2mdc(struct ll_sb_info *sbi)
1046 struct obd_device *obd = sbi->ll_md_exp->exp_obd;
1052 // FIXME: replace the name of this with LL_SB to conform to kernel stuff
1053 static inline struct ll_sb_info *ll_i2sbi(struct inode *inode)
1055 return ll_s2sbi(inode->i_sb);
1058 static inline struct obd_export *ll_i2dtexp(struct inode *inode)
1060 return ll_s2dtexp(inode->i_sb);
1063 static inline struct obd_export *ll_i2mdexp(struct inode *inode)
1065 return ll_s2mdexp(inode->i_sb);
1068 static inline struct lu_fid *ll_inode2fid(struct inode *inode)
1071 LASSERT(inode != NULL);
1072 fid = &ll_i2info(inode)->lli_fid;
1073 LASSERT(fid_is_igif(fid) || fid_ver(fid) == 0);
1077 static inline int ll_mds_max_easize(struct super_block *sb)
1079 return sbi2mdc(ll_s2sbi(sb))->cl_max_mds_easize;
1082 static inline __u64 ll_file_maxbytes(struct inode *inode)
1084 return ll_i2info(inode)->lli_maxbytes;
1088 int ll_setxattr(struct dentry *dentry, const char *name,
1089 const void *value, size_t size, int flags);
1090 ssize_t ll_getxattr(struct dentry *dentry, const char *name,
1091 void *buffer, size_t size);
1092 ssize_t ll_listxattr(struct dentry *dentry, char *buffer, size_t size);
1093 int ll_removexattr(struct dentry *dentry, const char *name);
1095 /* llite/remote_perm.c */
1096 extern cfs_mem_cache_t *ll_remote_perm_cachep;
1097 extern cfs_mem_cache_t *ll_rmtperm_hash_cachep;
1099 cfs_hlist_head_t *alloc_rmtperm_hash(void);
1100 void free_rmtperm_hash(cfs_hlist_head_t *hash);
1101 int ll_update_remote_perm(struct inode *inode, struct mdt_remote_perm *perm);
1102 int lustre_check_remote_perm(struct inode *inode, int mask);
1104 /* llite/llite_capa.c */
1105 extern cfs_timer_t ll_capa_timer;
1107 int ll_capa_thread_start(void);
1108 void ll_capa_thread_stop(void);
1109 void ll_capa_timer_callback(unsigned long unused);
1111 struct obd_capa *ll_add_capa(struct inode *inode, struct obd_capa *ocapa);
1112 int ll_update_capa(struct obd_capa *ocapa, struct lustre_capa *capa);
1114 void ll_capa_open(struct inode *inode);
1115 void ll_capa_close(struct inode *inode);
1117 struct obd_capa *ll_mdscapa_get(struct inode *inode);
1118 struct obd_capa *ll_osscapa_get(struct inode *inode, __u64 opc);
1120 void ll_truncate_free_capa(struct obd_capa *ocapa);
1121 void ll_clear_inode_capas(struct inode *inode);
1122 void ll_print_capa_stat(struct ll_sb_info *sbi);
1124 /* llite/llite_cl.c */
1125 extern struct lu_device_type vvp_device_type;
1128 * Common IO arguments for various VFS I/O interfaces.
1130 int cl_sb_init(struct super_block *sb);
1131 int cl_sb_fini(struct super_block *sb);
1132 enum cl_lock_mode vvp_mode_from_vma(struct vm_area_struct *vma);
1133 void ll_io_init(struct cl_io *io, const struct file *file, int write);
1135 void ras_update(struct ll_sb_info *sbi, struct inode *inode,
1136 struct ll_readahead_state *ras, unsigned long index,
1138 void ll_ra_count_put(struct ll_sb_info *sbi, unsigned long len);
1139 int ll_is_file_contended(struct file *file);
1140 void ll_ra_stats_inc(struct address_space *mapping, enum ra_stat which);
1142 /* llite/llite_rmtacl.c */
1143 #ifdef CONFIG_FS_POSIX_ACL
1144 obd_valid rce_ops2valid(int ops);
1145 struct rmtacl_ctl_entry *rct_search(struct rmtacl_ctl_table *rct, pid_t key);
1146 int rct_add(struct rmtacl_ctl_table *rct, pid_t key, int ops);
1147 int rct_del(struct rmtacl_ctl_table *rct, pid_t key);
1148 void rct_init(struct rmtacl_ctl_table *rct);
1149 void rct_fini(struct rmtacl_ctl_table *rct);
1151 void ee_free(struct eacl_entry *ee);
1152 int ee_add(struct eacl_table *et, pid_t key, struct lu_fid *fid, int type,
1153 ext_acl_xattr_header *header);
1154 struct eacl_entry *et_search_del(struct eacl_table *et, pid_t key,
1155 struct lu_fid *fid, int type);
1156 void et_search_free(struct eacl_table *et, pid_t key);
1157 void et_init(struct eacl_table *et);
1158 void et_fini(struct eacl_table *et);
1163 #define LL_SA_RPC_MIN 2
1164 #define LL_SA_RPC_DEF 32
1165 #define LL_SA_RPC_MAX 8192
1167 #define LL_SA_CACHE_BIT 5
1168 #define LL_SA_CACHE_SIZE (1 << LL_SA_CACHE_BIT)
1169 #define LL_SA_CACHE_MASK (LL_SA_CACHE_SIZE - 1)
1171 /* per inode struct, for dir only */
1172 struct ll_statahead_info {
1173 struct inode *sai_inode;
1174 cfs_atomic_t sai_refcount; /* when access this struct, hold
1176 unsigned int sai_generation; /* generation for statahead */
1177 unsigned int sai_max; /* max ahead of lookup */
1178 __u64 sai_sent; /* stat requests sent count */
1179 __u64 sai_replied; /* stat requests which received
1181 __u64 sai_index; /* index of statahead entry */
1182 __u64 sai_index_wait; /* index of entry which is the
1183 * caller is waiting for */
1184 __u64 sai_hit; /* hit count */
1185 __u64 sai_miss; /* miss count:
1186 * for "ls -al" case, it includes
1187 * hidden dentry miss;
1188 * for "ls -l" case, it does not
1189 * include hidden dentry miss.
1190 * "sai_miss_hidden" is used for
1193 unsigned int sai_consecutive_miss; /* consecutive miss */
1194 unsigned int sai_miss_hidden;/* "ls -al", but first dentry
1195 * is not a hidden one */
1196 unsigned int sai_skip_hidden;/* skipped hidden dentry count */
1197 unsigned int sai_ls_all:1, /* "ls -al", do stat-ahead for
1199 sai_in_readpage:1;/* statahead is in readdir()*/
1200 cfs_waitq_t sai_waitq; /* stat-ahead wait queue */
1201 struct ptlrpc_thread sai_thread; /* stat-ahead thread */
1202 cfs_list_t sai_entries_sent; /* entries sent out */
1203 cfs_list_t sai_entries_received; /* entries returned */
1204 cfs_list_t sai_entries_stated; /* entries stated */
1205 cfs_list_t sai_cache[LL_SA_CACHE_SIZE];
1206 cfs_spinlock_t sai_cache_lock[LL_SA_CACHE_SIZE];
1207 cfs_atomic_t sai_cache_count; /* entry count in cache */
1210 int do_statahead_enter(struct inode *dir, struct dentry **dentry,
1212 void ll_stop_statahead(struct inode *dir, void *key);
1215 ll_statahead_mark(struct inode *dir, struct dentry *dentry)
1217 struct ll_inode_info *lli = ll_i2info(dir);
1218 struct ll_statahead_info *sai = lli->lli_sai;
1219 struct ll_dentry_data *ldd = ll_d2d(dentry);
1221 /* not the same process, don't mark */
1222 if (lli->lli_opendir_pid != cfs_curproc_pid())
1225 if (sai != NULL && ldd != NULL)
1226 ldd->lld_sa_generation = sai->sai_generation;
1230 ll_statahead_enter(struct inode *dir, struct dentry **dentryp, int only_unplug)
1232 struct ll_inode_info *lli;
1233 struct ll_dentry_data *ldd;
1235 if (ll_i2sbi(dir)->ll_sa_max == 0)
1238 lli = ll_i2info(dir);
1239 /* not the same process, don't statahead */
1240 if (lli->lli_opendir_pid != cfs_curproc_pid())
1243 ldd = ll_d2d(*dentryp);
1245 * When stats a dentry, the system trigger more than once "revalidate"
1246 * or "lookup", for "getattr", for "getxattr", and maybe for others.
1247 * Under patchless client mode, the operation intent is not accurate,
1248 * which maybe misguide the statahead thread. For example:
1249 * The "revalidate" call for "getattr" and "getxattr" of a dentry maybe
1250 * have the same operation intent -- "IT_GETATTR".
1251 * In fact, one dentry should has only one chance to interact with the
1252 * statahead thread, otherwise the statahead windows will be confused.
1253 * The solution is as following:
1254 * Assign "lld_sa_generation" with "sai_generation" when a dentry
1255 * "IT_GETATTR" for the first time, and the subsequent "IT_GETATTR"
1256 * will bypass interacting with statahead thread for checking:
1257 * "lld_sa_generation == lli_sai->sai_generation"
1259 if (ldd && lli->lli_sai &&
1260 ldd->lld_sa_generation == lli->lli_sai->sai_generation)
1263 return do_statahead_enter(dir, dentryp, only_unplug);
1266 /* llite ioctl register support rountine */
1273 #define LLIOC_MAX_CMD 256
1276 * Rules to write a callback function:
1279 * @magic: Dynamic ioctl call routine will feed this vaule with the pointer
1280 * returned to ll_iocontrol_register. Callback functions should use this
1281 * data to check the potential collasion of ioctl cmd. If collasion is
1282 * found, callback function should return LLIOC_CONT.
1283 * @rcp: The result of ioctl command.
1286 * If @magic matches the pointer returned by ll_iocontrol_data, the
1287 * callback should return LLIOC_STOP; return LLIOC_STOP otherwise.
1289 typedef enum llioc_iter (*llioc_callback_t)(struct inode *inode,
1290 struct file *file, unsigned int cmd, unsigned long arg,
1291 void *magic, int *rcp);
1293 enum llioc_iter ll_iocontrol_call(struct inode *inode, struct file *file,
1294 unsigned int cmd, unsigned long arg, int *rcp);
1296 /* export functions */
1297 /* Register ioctl block dynamatically for a regular file.
1299 * @cmd: the array of ioctl command set
1300 * @count: number of commands in the @cmd
1301 * @cb: callback function, it will be called if an ioctl command is found to
1302 * belong to the command list @cmd.
1305 * A magic pointer will be returned if success;
1306 * otherwise, NULL will be returned.
1308 void *ll_iocontrol_register(llioc_callback_t cb, int count, unsigned int *cmd);
1309 void ll_iocontrol_unregister(void *magic);
1313 /* lclient compat stuff */
1314 #define cl_inode_info ll_inode_info
1315 #define cl_i2info(info) ll_i2info(info)
1316 #define cl_inode_mode(inode) ((inode)->i_mode)
1317 #define cl_i2sbi ll_i2sbi
1319 static inline void cl_isize_lock(struct inode *inode, int lsmlock)
1321 ll_inode_size_lock(inode, lsmlock);
1324 static inline void cl_isize_unlock(struct inode *inode, int lsmlock)
1326 ll_inode_size_unlock(inode, lsmlock);
1329 static inline void cl_isize_write_nolock(struct inode *inode, loff_t kms)
1331 LASSERT_SEM_LOCKED(&ll_i2info(inode)->lli_size_sem);
1332 i_size_write(inode, kms);
1335 static inline void cl_isize_write(struct inode *inode, loff_t kms)
1337 ll_inode_size_lock(inode, 0);
1338 i_size_write(inode, kms);
1339 ll_inode_size_unlock(inode, 0);
1342 #define cl_isize_read(inode) i_size_read(inode)
1344 static inline int cl_merge_lvb(struct inode *inode)
1346 return ll_merge_lvb(inode);
1349 #define cl_inode_atime(inode) LTIME_S((inode)->i_atime)
1350 #define cl_inode_ctime(inode) LTIME_S((inode)->i_ctime)
1351 #define cl_inode_mtime(inode) LTIME_S((inode)->i_mtime)
1353 struct obd_capa *cl_capa_lookup(struct inode *inode, enum cl_req_type crt);
1355 /** direct write pages */
1356 struct ll_dio_pages {
1357 /** page array to be written. we don't support
1358 * partial pages except the last one. */
1359 struct page **ldp_pages;
1360 /* offset of each page */
1361 loff_t *ldp_offsets;
1362 /** if ldp_offsets is NULL, it means a sequential
1363 * pages to be written, then this is the file offset
1364 * of the * first page. */
1365 loff_t ldp_start_offset;
1366 /** how many bytes are to be written. */
1368 /** # of pages in the array. */
1372 static inline void cl_stats_tally(struct cl_device *dev, enum cl_req_type crt,
1375 int opc = (crt == CRT_READ) ? LPROC_LL_OSC_READ :
1378 ll_stats_ops_tally(ll_s2sbi(cl2ccc_dev(dev)->cdv_sb), opc, rc);
1381 extern ssize_t ll_direct_rw_pages(const struct lu_env *env, struct cl_io *io,
1382 int rw, struct inode *inode,
1383 struct ll_dio_pages *pv);
1385 static inline int ll_file_nolock(const struct file *file)
1387 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
1388 struct inode *inode = file->f_dentry->d_inode;
1390 LASSERT(fd != NULL);
1391 return ((fd->fd_flags & LL_FILE_IGNORE_LOCK) ||
1392 (ll_i2sbi(inode)->ll_flags & LL_SBI_NOLCK));
1395 static inline void ll_set_lock_data(struct obd_export *exp, struct inode *inode,
1396 struct lookup_intent *it, __u64 *bits)
1398 if (!it->d.lustre.it_lock_set) {
1399 CDEBUG(D_DLMTRACE, "setting l_data to inode %p (%lu/%u)\n",
1400 inode, inode->i_ino, inode->i_generation);
1401 md_set_lock_data(exp, &it->d.lustre.it_lock_handle,
1402 inode, &it->d.lustre.it_lock_bits);
1403 it->d.lustre.it_lock_set = 1;
1407 *bits = it->d.lustre.it_lock_bits;
1410 static inline void ll_dentry_rehash(struct dentry *dentry, int locked)
1413 cfs_spin_lock(&ll_lookup_lock);
1414 spin_lock(&dcache_lock);
1416 if (d_unhashed(dentry))
1417 d_rehash_cond(dentry, 0);
1419 spin_unlock(&dcache_lock);
1420 cfs_spin_unlock(&ll_lookup_lock);
1424 static inline void ll_dentry_reset_flags(struct dentry *dentry, __u64 bits)
1426 if (bits & MDS_INODELOCK_LOOKUP &&
1427 dentry->d_flags & DCACHE_LUSTRE_INVALID) {
1428 lock_dentry(dentry);
1429 dentry->d_flags &= ~DCACHE_LUSTRE_INVALID;
1430 unlock_dentry(dentry);
1434 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2,7,50,0)
1435 /* Compatibility for old (1.8) compiled userspace quota code */
1436 struct if_quotactl_18 {
1441 struct obd_dqinfo qc_dqinfo;
1442 struct obd_dqblk qc_dqblk;
1444 struct obd_uuid obd_uuid;
1446 #define LL_IOC_QUOTACTL_18 _IOWR('f', 162, struct if_quotactl_18 *)
1447 /* End compatibility for old (1.8) compiled userspace quota code */
1449 #warning "remove old LL_IOC_QUOTACTL_18 compatibility code"
1450 #endif /* LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2,7,50,0) */
1452 #endif /* LLITE_INTERNAL_H */