4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2015, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
33 #ifndef LLITE_INTERNAL_H
34 #define LLITE_INTERNAL_H
35 #include "../include/lustre_debug.h"
36 #include "../include/lustre_ver.h"
37 #include "../include/lustre_disk.h" /* for s2sbi */
38 #include "../include/lustre_eacl.h"
39 #include "../include/lustre_linkea.h"
41 /* for struct cl_lock_descr and struct cl_io */
42 #include "../include/lustre_patchless_compat.h"
43 #include "../include/lustre_compat.h"
44 #include "../include/cl_object.h"
45 #include "../include/lustre_lmv.h"
46 #include "../include/lustre_mdc.h"
47 #include "../include/lustre_intent.h"
48 #include <linux/compat.h>
49 #include <linux/namei.h>
50 #include <linux/xattr.h>
51 #include <linux/posix_acl_xattr.h>
52 #include "vvp_internal.h"
53 #include "range_lock.h"
59 #ifndef VM_FAULT_RETRY
60 #define VM_FAULT_RETRY 0
63 /** Only used on client-side for indicating the tail of dir hash/offset. */
64 #define LL_DIR_END_OFF 0x7fffffffffffffffULL
65 #define LL_DIR_END_OFF_32BIT 0x7fffffffUL
67 /* 4UL * 1024 * 1024 */
68 #define LL_MAX_BLKSIZE_BITS 22
70 #define LL_IT2STR(it) ((it) ? ldlm_it2str((it)->it_op) : "0")
71 #define LUSTRE_FPRIVATE(file) ((file)->private_data)
73 struct ll_dentry_data
{
74 struct lookup_intent
*lld_it
;
75 unsigned int lld_sa_generation
;
76 unsigned int lld_invalid
:1;
77 unsigned int lld_nfs_dentry
:1;
78 struct rcu_head lld_rcu_head
;
81 #define ll_d2d(de) ((struct ll_dentry_data *)((de)->d_fsdata))
83 #define LLI_INODE_MAGIC 0x111d0de5
84 #define LLI_INODE_DEAD 0xdeadd00d
86 struct ll_getname_data
{
87 struct dir_context ctx
;
88 char *lgd_name
; /* points to a buffer with NAME_MAX+1 size */
89 struct lu_fid lgd_fid
; /* target fid we are looking for */
90 int lgd_found
; /* inode matched? */
94 struct lu_env
*lg_env
;
96 struct cl_lock
*lg_lock
;
101 /* File data is modified. */
102 LLIF_DATA_MODIFIED
= 0,
103 /* File is being restored */
104 LLIF_FILE_RESTORING
= 1,
105 /* Xattr cache is attached to the file */
106 LLIF_XATTR_CACHE
= 2,
109 struct ll_inode_info
{
110 __u32 lli_inode_magic
;
113 unsigned long lli_flags
;
114 struct posix_acl
*lli_posix_acl
;
116 /* identifying fields for both metadata and data stacks. */
117 struct lu_fid lli_fid
;
118 /* master inode fid for stripe directory */
119 struct lu_fid lli_pfid
;
121 /* We need all three because every inode may be opened in different
124 struct obd_client_handle
*lli_mds_read_och
;
125 struct obd_client_handle
*lli_mds_write_och
;
126 struct obd_client_handle
*lli_mds_exec_och
;
127 __u64 lli_open_fd_read_count
;
128 __u64 lli_open_fd_write_count
;
129 __u64 lli_open_fd_exec_count
;
130 /* Protects access to och pointers and their usage counters */
131 struct mutex lli_och_mutex
;
133 struct inode lli_vfs_inode
;
135 /* the most recent timestamps obtained from mds */
139 spinlock_t lli_agl_lock
;
141 /* Try to make the d::member and f::member are aligned. Before using
142 * these members, make clear whether it is directory or not.
147 /* serialize normal readdir and statahead-readdir. */
148 struct mutex lli_readdir_mutex
;
150 /* metadata statahead */
151 /* since parent-child threads can share the same @file
152 * struct, "opendir_key" is the token when dir close for
153 * case of parent exit before child -- it is me should
154 * cleanup the dir readahead.
156 void *lli_opendir_key
;
157 struct ll_statahead_info
*lli_sai
;
158 /* protect statahead stuff. */
159 spinlock_t lli_sa_lock
;
160 /* "opendir_pid" is the token when lookup/revalidate
161 * -- I am the owner of dir statahead.
163 pid_t lli_opendir_pid
;
164 /* stat will try to access statahead entries or start
165 * statahead if this flag is set, and this flag will be
166 * set upon dir open, and cleared when dir is closed,
167 * statahead hit ratio is too low, or start statahead
170 unsigned int lli_sa_enabled
:1;
171 /* generation for statahead */
172 unsigned int lli_sa_generation
;
173 /* directory stripe information */
174 struct lmv_stripe_md
*lli_lsm_md
;
175 /* default directory stripe offset. This is extracted
176 * from the "dmv" xattr in order to decide which MDT to
177 * create a subdirectory on. The MDS itself fetches
178 * "dmv" and gets the rest of the default layout itself
179 * (count, hash, etc).
181 __u32 lli_def_stripe_offset
;
184 /* for non-directory */
186 struct mutex lli_size_mutex
;
187 char *lli_symlink_name
;
189 * struct rw_semaphore {
190 * signed long count; // align d.d_def_acl
191 * spinlock_t wait_lock; // align d.d_sa_lock
192 * struct list_head wait_list;
195 struct rw_semaphore lli_trunc_sem
;
196 struct range_lock_tree lli_write_tree
;
198 struct rw_semaphore lli_glimpse_sem
;
199 unsigned long lli_glimpse_time
;
200 struct list_head lli_agl_list
;
203 /* for writepage() only to communicate to fsync */
207 * whenever a process try to read/write the file, the
208 * jobid of the process will be saved here, and it'll
209 * be packed into the write PRC when flush later.
211 * so the read/write statistics for jobid will not be
212 * accurate if the file is shared by different jobs.
214 char lli_jobid
[LUSTRE_JOBID_SIZE
];
218 /* XXX: For following frequent used members, although they maybe special
219 * used for non-directory object, it is some time-wasting to check
220 * whether the object is directory or not before using them. On the
221 * other hand, currently, sizeof(f) > sizeof(d), it cannot reduce
222 * the "ll_inode_info" size even if moving those members into u.f.
223 * So keep them out side.
225 * In the future, if more members are added only for directory,
226 * some of the following members can be moved into u.f.
228 struct cl_object
*lli_clob
;
230 /* mutex to request for layout lock exclusively. */
231 struct mutex lli_layout_mutex
;
232 /* Layout version, protected by lli_layout_lock */
233 __u32 lli_layout_gen
;
234 spinlock_t lli_layout_lock
;
236 struct rw_semaphore lli_xattrs_list_rwsem
;
237 struct mutex lli_xattrs_enq_lock
;
238 struct list_head lli_xattrs
;/* ll_xattr_entry->xe_list */
241 static inline __u32
ll_layout_version_get(struct ll_inode_info
*lli
)
245 spin_lock(&lli
->lli_layout_lock
);
246 gen
= lli
->lli_layout_gen
;
247 spin_unlock(&lli
->lli_layout_lock
);
252 static inline void ll_layout_version_set(struct ll_inode_info
*lli
, __u32 gen
)
254 spin_lock(&lli
->lli_layout_lock
);
255 lli
->lli_layout_gen
= gen
;
256 spin_unlock(&lli
->lli_layout_lock
);
259 int ll_xattr_cache_destroy(struct inode
*inode
);
261 int ll_xattr_cache_get(struct inode
*inode
, const char *name
,
262 char *buffer
, size_t size
, __u64 valid
);
264 int ll_init_security(struct dentry
*dentry
, struct inode
*inode
,
268 * Locking to guarantee consistency of non-atomic updates to long long i_size,
269 * consistency between file size and KMS.
271 * Implemented by ->lli_size_mutex and ->lsm_lock, nested in that order.
274 void ll_inode_size_lock(struct inode
*inode
);
275 void ll_inode_size_unlock(struct inode
*inode
);
277 /* FIXME: replace the name of this with LL_I to conform to kernel stuff */
278 /* static inline struct ll_inode_info *LL_I(struct inode *inode) */
279 static inline struct ll_inode_info
*ll_i2info(struct inode
*inode
)
281 return container_of(inode
, struct ll_inode_info
, lli_vfs_inode
);
284 /* default to about 64M of readahead on a given system. */
285 #define SBI_DEFAULT_READAHEAD_MAX (64UL << (20 - PAGE_SHIFT))
287 /* default to read-ahead full files smaller than 2MB on the second read */
288 #define SBI_DEFAULT_READAHEAD_WHOLE_MAX (2UL << (20 - PAGE_SHIFT))
293 RA_STAT_DISTANT_READPAGE
,
294 RA_STAT_MISS_IN_WINDOW
,
295 RA_STAT_FAILED_GRAB_PAGE
,
296 RA_STAT_FAILED_MATCH
,
301 RA_STAT_MAX_IN_FLIGHT
,
302 RA_STAT_WRONG_GRAB_PAGE
,
303 RA_STAT_FAILED_REACH_END
,
308 atomic_t ra_cur_pages
;
309 unsigned long ra_max_pages
;
310 unsigned long ra_max_pages_per_file
;
311 unsigned long ra_max_read_ahead_whole_pages
;
314 /* ra_io_arg will be filled in the beginning of ll_readahead with
315 * ras_lock, then the following ll_read_ahead_pages will read RA
316 * pages according to this arg, all the items in this structure are
317 * counted by page index.
320 unsigned long ria_start
; /* start offset of read-ahead*/
321 unsigned long ria_end
; /* end offset of read-ahead*/
322 unsigned long ria_reserved
; /* reserved pages for read-ahead */
323 unsigned long ria_end_min
; /* minimum end to cover current read */
324 bool ria_eof
; /* reach end of file */
325 /* If stride read pattern is detected, ria_stoff means where
326 * stride read is started. Note: for normal read-ahead, the
327 * value here is meaningless, and also it will not be accessed
330 /* ria_length and ria_pages are the length and pages length in the
331 * stride I/O mode. And they will also be used to check whether
332 * it is stride I/O read-ahead in the read-ahead pages
334 unsigned long ria_length
;
335 unsigned long ria_pages
;
338 /* LL_HIST_MAX=32 causes an overflow */
339 #define LL_HIST_MAX 28
340 #define LL_HIST_START 12 /* buckets start at 2^12 = 4k */
341 #define LL_PROCESS_HIST_MAX 10
342 struct per_process_info
{
344 struct obd_histogram pp_r_hist
;
345 struct obd_histogram pp_w_hist
;
348 /* pp_extents[LL_PROCESS_HIST_MAX] will hold the combined process info */
349 struct ll_rw_extents_info
{
350 struct per_process_info pp_extents
[LL_PROCESS_HIST_MAX
+ 1];
353 #define LL_OFFSET_HIST_MAX 100
354 struct ll_rw_process_info
{
357 loff_t rw_range_start
;
359 loff_t rw_last_file_pos
;
361 size_t rw_smallest_extent
;
362 size_t rw_largest_extent
;
363 struct ll_file_data
*rw_last_file
;
366 enum stats_track_type
{
367 STATS_TRACK_ALL
= 0, /* track all processes */
368 STATS_TRACK_PID
, /* track process with this pid */
369 STATS_TRACK_PPID
, /* track processes with this ppid */
370 STATS_TRACK_GID
, /* track processes with this gid */
374 /* flags for sbi->ll_flags */
375 #define LL_SBI_NOLCK 0x01 /* DLM locking disabled (directio-only) */
376 #define LL_SBI_CHECKSUM 0x02 /* checksum each page as it's written */
377 #define LL_SBI_FLOCK 0x04
378 #define LL_SBI_USER_XATTR 0x08 /* support user xattr */
379 #define LL_SBI_ACL 0x10 /* support ACL */
380 /* LL_SBI_RMT_CLIENT 0x40 remote client */
381 #define LL_SBI_MDS_CAPA 0x80 /* support mds capa, obsolete */
382 #define LL_SBI_OSS_CAPA 0x100 /* support oss capa, obsolete */
383 #define LL_SBI_LOCALFLOCK 0x200 /* Local flocks support by kernel */
384 #define LL_SBI_LRU_RESIZE 0x400 /* lru resize support */
385 #define LL_SBI_LAZYSTATFS 0x800 /* lazystatfs mount option */
386 /* LL_SBI_SOM_PREVIEW 0x1000 SOM preview mount option, obsolete */
387 #define LL_SBI_32BIT_API 0x2000 /* generate 32 bit inodes. */
388 #define LL_SBI_64BIT_HASH 0x4000 /* support 64-bits dir hash/offset */
389 #define LL_SBI_AGL_ENABLED 0x8000 /* enable agl */
390 #define LL_SBI_VERBOSE 0x10000 /* verbose mount/umount */
391 #define LL_SBI_LAYOUT_LOCK 0x20000 /* layout lock support */
392 #define LL_SBI_USER_FID2PATH 0x40000 /* allow fid2path by unprivileged users */
393 #define LL_SBI_XATTR_CACHE 0x80000 /* support for xattr cache */
394 #define LL_SBI_NOROOTSQUASH 0x100000 /* do not apply root squash */
395 #define LL_SBI_ALWAYS_PING 0x200000 /* always ping even if server
398 #define LL_SBI_FLAGS { \
424 * This is embedded into llite super-blocks to keep track of connect
425 * flags (capabilities) supported by all imports given mount is
428 struct lustre_client_ocd
{
430 * This is conjunction of connect_flags across all imports
431 * (LOVs) this mount is connected to. This field is updated by
432 * cl_ocd_update() under ->lco_lock.
435 struct mutex lco_lock
;
436 struct obd_export
*lco_md_exp
;
437 struct obd_export
*lco_dt_exp
;
441 /* this protects pglist and ra_info. It isn't safe to
442 * grab from interrupt contexts
445 spinlock_t ll_pp_extent_lock
; /* pp_extent entry*/
446 spinlock_t ll_process_lock
; /* ll_rw_process_info */
447 struct obd_uuid ll_sb_uuid
;
448 struct obd_export
*ll_md_exp
;
449 struct obd_export
*ll_dt_exp
;
450 struct dentry
*ll_debugfs_entry
;
451 struct lu_fid ll_root_fid
; /* root object fid */
454 unsigned int ll_umounting
:1,
455 ll_xattr_cache_enabled
:1,
456 ll_client_common_fill_super_succeeded
:1;
458 struct lustre_client_ocd ll_lco
;
460 struct lprocfs_stats
*ll_stats
; /* lprocfs stats counter */
463 * Used to track "unstable" pages on a client, and maintain a
464 * LRU list of clean pages. An "unstable" page is defined as
465 * any page which is sent to a server as part of a bulk request,
466 * but is uncommitted to stable storage.
468 struct cl_client_cache
*ll_cache
;
470 struct lprocfs_stats
*ll_ra_stats
;
472 struct ll_ra_info ll_ra_info
;
473 unsigned int ll_namelen
;
474 struct file_operations
*ll_fop
;
476 unsigned int ll_md_brw_pages
; /* readdir pages per RPC */
478 struct lu_site
*ll_site
;
479 struct cl_device
*ll_cl
;
481 struct ll_rw_extents_info ll_rw_extents_info
;
482 int ll_extent_process_count
;
483 struct ll_rw_process_info ll_rw_process_info
[LL_PROCESS_HIST_MAX
];
484 unsigned int ll_offset_process_count
;
485 struct ll_rw_process_info ll_rw_offset_info
[LL_OFFSET_HIST_MAX
];
486 unsigned int ll_rw_offset_entry_count
;
487 int ll_stats_track_id
;
488 enum stats_track_type ll_stats_track_type
;
491 /* metadata stat-ahead */
492 unsigned int ll_sa_max
; /* max statahead RPCs */
493 atomic_t ll_sa_total
; /* statahead thread started
496 atomic_t ll_sa_wrong
; /* statahead thread stopped for
499 atomic_t ll_sa_running
; /* running statahead thread
502 atomic_t ll_agl_total
; /* AGL thread started count */
504 dev_t ll_sdev_orig
; /* save s_dev before assign for
508 struct root_squash_info ll_squash
;
511 __kernel_fsid_t ll_fsid
;
512 struct kobject ll_kobj
; /* sysfs object */
513 struct super_block
*ll_sb
; /* struct super_block (for sysfs code)*/
514 struct completion ll_kobj_unregister
;
518 * per file-descriptor read-ahead data.
520 struct ll_readahead_state
{
523 * index of the last page that read(2) needed and that wasn't in the
524 * cache. Used by ras_update() to detect seeks.
526 * XXX nikita: if access seeks into cached region, Lustre doesn't see
529 unsigned long ras_last_readpage
;
531 * number of pages read after last read-ahead window reset. As window
532 * is reset on each seek, this is effectively a number of consecutive
533 * accesses. Maybe ->ras_accessed_in_window is better name.
535 * XXX nikita: window is also reset (by ras_update()) when Lustre
536 * believes that memory pressure evicts read-ahead pages. In that
537 * case, it probably doesn't make sense to expand window to
538 * PTLRPC_MAX_BRW_PAGES on the third access.
540 unsigned long ras_consecutive_pages
;
542 * number of read requests after the last read-ahead window reset
543 * As window is reset on each seek, this is effectively the number
544 * on consecutive read request and is used to trigger read-ahead.
546 unsigned long ras_consecutive_requests
;
548 * Parameters of current read-ahead window. Handled by
549 * ras_update(). On the initial access to the file or after a seek,
550 * window is reset to 0. After 3 consecutive accesses, window is
551 * expanded to PTLRPC_MAX_BRW_PAGES. Afterwards, window is enlarged by
552 * PTLRPC_MAX_BRW_PAGES chunks up to ->ra_max_pages.
554 unsigned long ras_window_start
, ras_window_len
;
556 * Optimal RPC size. It decides how many pages will be sent
557 * for each read-ahead.
559 unsigned long ras_rpc_size
;
561 * Where next read-ahead should start at. This lies within read-ahead
562 * window. Read-ahead window is read in pieces rather than at once
563 * because: 1. lustre limits total number of pages under read-ahead by
564 * ->ra_max_pages (see ll_ra_count_get()), 2. client cannot read pages
565 * not covered by DLM lock.
567 unsigned long ras_next_readahead
;
569 * Total number of ll_file_read requests issued, reads originating
570 * due to mmap are not counted in this total. This value is used to
571 * trigger full file read-ahead after multiple reads to a small file.
573 unsigned long ras_requests
;
575 * Page index with respect to the current request, these value
576 * will not be accurate when dealing with reads issued via mmap.
578 unsigned long ras_request_index
;
580 * The following 3 items are used for detecting the stride I/O
582 * In stride I/O mode,
583 * ...............|-----data-----|****gap*****|--------|******|....
584 * offset |-stride_pages-|-stride_gap-|
585 * ras_stride_offset = offset;
586 * ras_stride_length = stride_pages + stride_gap;
587 * ras_stride_pages = stride_pages;
588 * Note: all these three items are counted by pages.
590 unsigned long ras_stride_length
;
591 unsigned long ras_stride_pages
;
592 pgoff_t ras_stride_offset
;
594 * number of consecutive stride request count, and it is similar as
595 * ras_consecutive_requests, but used for stride I/O mode.
596 * Note: only more than 2 consecutive stride request are detected,
597 * stride read-ahead will be enable
599 unsigned long ras_consecutive_stride_requests
;
602 extern struct kmem_cache
*ll_file_data_slab
;
603 struct lustre_handle
;
604 struct ll_file_data
{
605 struct ll_readahead_state fd_ras
;
606 struct ll_grouplock fd_grouplock
;
610 /* openhandle if lease exists for this file.
611 * Borrow lli->lli_och_mutex to protect assignment
613 struct obd_client_handle
*fd_lease_och
;
614 struct obd_client_handle
*fd_och
;
615 struct file
*fd_file
;
616 /* Indicate whether need to report failure when close.
617 * true: failure is known, not report again.
618 * false: unknown failure, should report.
620 bool fd_write_failed
;
621 rwlock_t fd_lock
; /* protect lcc list */
622 struct list_head fd_lccs
; /* list of ll_cl_context */
625 extern struct dentry
*llite_root
;
626 extern struct kset
*llite_kset
;
628 static inline struct inode
*ll_info2i(struct ll_inode_info
*lli
)
630 return &lli
->lli_vfs_inode
;
633 __u32
ll_i2suppgid(struct inode
*i
);
634 void ll_i2gids(__u32
*suppgids
, struct inode
*i1
, struct inode
*i2
);
636 static inline int ll_need_32bit_api(struct ll_sb_info
*sbi
)
638 #if BITS_PER_LONG == 32
640 #elif defined(CONFIG_COMPAT)
641 return unlikely(in_compat_syscall() || (sbi
->ll_flags
& LL_SBI_32BIT_API
));
643 return unlikely(sbi
->ll_flags
& LL_SBI_32BIT_API
);
647 void ll_ras_enter(struct file
*f
);
649 /* llite/lcommon_misc.c */
650 int cl_init_ea_size(struct obd_export
*md_exp
, struct obd_export
*dt_exp
);
651 int cl_ocd_update(struct obd_device
*host
,
652 struct obd_device
*watched
,
653 enum obd_notify_event ev
, void *owner
, void *data
);
654 int cl_get_grouplock(struct cl_object
*obj
, unsigned long gid
, int nonblock
,
655 struct ll_grouplock
*cg
);
656 void cl_put_grouplock(struct ll_grouplock
*cg
);
658 /* llite/lproc_llite.c */
659 int ldebugfs_register_mountpoint(struct dentry
*parent
,
660 struct super_block
*sb
, char *osc
, char *mdc
);
661 void ldebugfs_unregister_mountpoint(struct ll_sb_info
*sbi
);
662 void ll_stats_ops_tally(struct ll_sb_info
*sbi
, int op
, int count
);
663 void lprocfs_llite_init_vars(struct lprocfs_static_vars
*lvars
);
664 void ll_rw_stats_tally(struct ll_sb_info
*sbi
, pid_t pid
,
665 struct ll_file_data
*file
, loff_t pos
,
666 size_t count
, int rw
);
670 LPROC_LL_DIRTY_MISSES
,
672 LPROC_LL_WRITE_BYTES
,
695 LPROC_LL_ALLOC_INODE
,
698 LPROC_LL_GETXATTR_HITS
,
700 LPROC_LL_REMOVEXATTR
,
702 LPROC_LL_FILE_OPCODES
706 extern const struct file_operations ll_dir_operations
;
707 extern const struct inode_operations ll_dir_inode_operations
;
708 int ll_dir_read(struct inode
*inode
, __u64
*ppos
, struct md_op_data
*op_data
,
709 struct dir_context
*ctx
);
710 int ll_get_mdt_idx(struct inode
*inode
);
711 int ll_get_mdt_idx_by_fid(struct ll_sb_info
*sbi
, const struct lu_fid
*fid
);
712 struct page
*ll_get_dir_page(struct inode
*dir
, struct md_op_data
*op_data
,
714 void ll_release_page(struct inode
*inode
, struct page
*page
, bool remove
);
717 extern const struct inode_operations ll_special_inode_operations
;
719 struct inode
*ll_iget(struct super_block
*sb
, ino_t hash
,
720 struct lustre_md
*lic
);
721 int ll_test_inode_by_fid(struct inode
*inode
, void *opaque
);
722 int ll_md_blocking_ast(struct ldlm_lock
*, struct ldlm_lock_desc
*,
723 void *data
, int flag
);
724 struct dentry
*ll_splice_alias(struct inode
*inode
, struct dentry
*de
);
725 void ll_update_times(struct ptlrpc_request
*request
, struct inode
*inode
);
728 int ll_writepage(struct page
*page
, struct writeback_control
*wbc
);
729 int ll_writepages(struct address_space
*, struct writeback_control
*wbc
);
730 int ll_readpage(struct file
*file
, struct page
*page
);
731 void ll_readahead_init(struct inode
*inode
, struct ll_readahead_state
*ras
);
732 int vvp_io_write_commit(const struct lu_env
*env
, struct cl_io
*io
);
733 struct ll_cl_context
*ll_cl_find(struct file
*file
);
734 void ll_cl_add(struct file
*file
, const struct lu_env
*env
, struct cl_io
*io
);
735 void ll_cl_remove(struct file
*file
, const struct lu_env
*env
);
737 extern const struct address_space_operations ll_aops
;
740 extern struct file_operations ll_file_operations
;
741 extern struct file_operations ll_file_operations_flock
;
742 extern struct file_operations ll_file_operations_noflock
;
743 extern const struct inode_operations ll_file_inode_operations
;
744 int ll_have_md_lock(struct inode
*inode
, __u64
*bits
,
745 enum ldlm_mode l_req_mode
);
746 enum ldlm_mode
ll_take_md_lock(struct inode
*inode
, __u64 bits
,
747 struct lustre_handle
*lockh
, __u64 flags
,
748 enum ldlm_mode mode
);
749 int ll_file_open(struct inode
*inode
, struct file
*file
);
750 int ll_file_release(struct inode
*inode
, struct file
*file
);
751 int ll_release_openhandle(struct inode
*, struct lookup_intent
*);
752 int ll_md_real_close(struct inode
*inode
, fmode_t fmode
);
753 int ll_getattr(struct vfsmount
*mnt
, struct dentry
*de
, struct kstat
*stat
);
754 struct posix_acl
*ll_get_acl(struct inode
*inode
, int type
);
755 int ll_migrate(struct inode
*parent
, struct file
*file
, int mdtidx
,
756 const char *name
, int namelen
);
757 int ll_get_fid_by_name(struct inode
*parent
, const char *name
,
758 int namelen
, struct lu_fid
*fid
, struct inode
**inode
);
759 int ll_inode_permission(struct inode
*inode
, int mask
);
761 int ll_lov_setstripe_ea_info(struct inode
*inode
, struct dentry
*dentry
,
762 __u64 flags
, struct lov_user_md
*lum
,
764 int ll_lov_getstripe_ea_info(struct inode
*inode
, const char *filename
,
765 struct lov_mds_md
**lmm
, int *lmm_size
,
766 struct ptlrpc_request
**request
);
767 int ll_dir_setstripe(struct inode
*inode
, struct lov_user_md
*lump
,
769 int ll_dir_getstripe(struct inode
*inode
, void **lmmp
, int *lmm_size
,
770 struct ptlrpc_request
**request
, u64 valid
);
771 int ll_fsync(struct file
*file
, loff_t start
, loff_t end
, int data
);
772 int ll_merge_attr(const struct lu_env
*env
, struct inode
*inode
);
773 int ll_fid2path(struct inode
*inode
, void __user
*arg
);
774 int ll_data_version(struct inode
*inode
, __u64
*data_version
, int flags
);
775 int ll_hsm_release(struct inode
*inode
);
776 int ll_hsm_state_set(struct inode
*inode
, struct hsm_state_set
*hss
);
780 extern const struct dentry_operations ll_d_ops
;
781 void ll_intent_drop_lock(struct lookup_intent
*);
782 void ll_intent_release(struct lookup_intent
*);
783 void ll_invalidate_aliases(struct inode
*);
784 void ll_lookup_finish_locks(struct lookup_intent
*it
, struct inode
*inode
);
785 int ll_revalidate_it_finish(struct ptlrpc_request
*request
,
786 struct lookup_intent
*it
, struct inode
*inode
);
788 /* llite/llite_lib.c */
789 extern struct super_operations lustre_super_operations
;
791 void ll_lli_init(struct ll_inode_info
*lli
);
792 int ll_fill_super(struct super_block
*sb
, struct vfsmount
*mnt
);
793 void ll_put_super(struct super_block
*sb
);
794 void ll_kill_super(struct super_block
*sb
);
795 struct inode
*ll_inode_from_resource_lock(struct ldlm_lock
*lock
);
796 void ll_dir_clear_lsm_md(struct inode
*inode
);
797 void ll_clear_inode(struct inode
*inode
);
798 int ll_setattr_raw(struct dentry
*dentry
, struct iattr
*attr
, bool hsm_import
);
799 int ll_setattr(struct dentry
*de
, struct iattr
*attr
);
800 int ll_statfs(struct dentry
*de
, struct kstatfs
*sfs
);
801 int ll_statfs_internal(struct super_block
*sb
, struct obd_statfs
*osfs
,
802 __u64 max_age
, __u32 flags
);
803 int ll_update_inode(struct inode
*inode
, struct lustre_md
*md
);
804 int ll_read_inode2(struct inode
*inode
, void *opaque
);
805 void ll_delete_inode(struct inode
*inode
);
806 int ll_iocontrol(struct inode
*inode
, struct file
*file
,
807 unsigned int cmd
, unsigned long arg
);
808 int ll_flush_ctx(struct inode
*inode
);
809 void ll_umount_begin(struct super_block
*sb
);
810 int ll_remount_fs(struct super_block
*sb
, int *flags
, char *data
);
811 int ll_show_options(struct seq_file
*seq
, struct dentry
*dentry
);
812 void ll_dirty_page_discard_warn(struct page
*page
, int ioret
);
813 int ll_prep_inode(struct inode
**inode
, struct ptlrpc_request
*req
,
814 struct super_block
*, struct lookup_intent
*);
815 int ll_obd_statfs(struct inode
*inode
, void __user
*arg
);
816 int ll_get_max_mdsize(struct ll_sb_info
*sbi
, int *max_mdsize
);
817 int ll_get_default_mdsize(struct ll_sb_info
*sbi
, int *default_mdsize
);
818 int ll_set_default_mdsize(struct ll_sb_info
*sbi
, int default_mdsize
);
819 int ll_process_config(struct lustre_cfg
*lcfg
);
822 LUSTRE_OPC_MKDIR
= 0,
823 LUSTRE_OPC_SYMLINK
= 1,
824 LUSTRE_OPC_MKNOD
= 2,
825 LUSTRE_OPC_CREATE
= 3,
829 struct md_op_data
*ll_prep_md_op_data(struct md_op_data
*op_data
,
830 struct inode
*i1
, struct inode
*i2
,
831 const char *name
, size_t namelen
,
832 u32 mode
, __u32 opc
, void *data
);
833 void ll_finish_md_op_data(struct md_op_data
*op_data
);
834 int ll_get_obd_name(struct inode
*inode
, unsigned int cmd
, unsigned long arg
);
835 char *ll_get_fsname(struct super_block
*sb
, char *buf
, int buflen
);
836 void ll_compute_rootsquash_state(struct ll_sb_info
*sbi
);
837 void ll_open_cleanup(struct super_block
*sb
, struct ptlrpc_request
*open_req
);
838 ssize_t
ll_copy_user_md(const struct lov_user_md __user
*md
,
839 struct lov_user_md
**kbuf
);
841 /* Compute expected user md size when passing in a md from user space */
842 static inline ssize_t
ll_lov_user_md_size(const struct lov_user_md
*lum
)
844 switch (lum
->lmm_magic
) {
845 case LOV_USER_MAGIC_V1
:
846 return sizeof(struct lov_user_md_v1
);
847 case LOV_USER_MAGIC_V3
:
848 return sizeof(struct lov_user_md_v3
);
849 case LOV_USER_MAGIC_SPECIFIC
:
850 if (lum
->lmm_stripe_count
> LOV_MAX_STRIPE_COUNT
)
853 return lov_user_md_size(lum
->lmm_stripe_count
,
854 LOV_USER_MAGIC_SPECIFIC
);
859 /* llite/llite_nfs.c */
860 extern const struct export_operations lustre_export_operations
;
861 __u32
get_uuid2int(const char *name
, int len
);
862 void get_uuid2fsid(const char *name
, int len
, __kernel_fsid_t
*fsid
);
863 struct inode
*search_inode_for_lustre(struct super_block
*sb
,
864 const struct lu_fid
*fid
);
865 int ll_dir_get_parent_fid(struct inode
*dir
, struct lu_fid
*parent_fid
);
867 /* llite/symlink.c */
868 extern const struct inode_operations ll_fast_symlink_inode_operations
;
871 * IO arguments for various VFS I/O interfaces.
877 struct kiocb
*via_iocb
;
878 struct iov_iter
*via_iter
;
883 struct ll_cl_context
{
884 struct list_head lcc_list
;
886 const struct lu_env
*lcc_env
;
887 struct cl_io
*lcc_io
;
888 struct cl_page
*lcc_page
;
891 struct ll_thread_info
{
892 struct vvp_io_args lti_args
;
893 struct ra_io_arg lti_ria
;
894 struct ll_cl_context lti_io_ctx
;
897 extern struct lu_context_key ll_thread_key
;
898 static inline struct ll_thread_info
*ll_env_info(const struct lu_env
*env
)
900 struct ll_thread_info
*lti
;
902 lti
= lu_context_key_get(&env
->le_ctx
, &ll_thread_key
);
907 static inline struct vvp_io_args
*ll_env_args(const struct lu_env
*env
)
909 return &ll_env_info(env
)->lti_args
;
912 /* llite/llite_mmap.c */
914 int ll_teardown_mmaps(struct address_space
*mapping
, __u64 first
, __u64 last
);
915 int ll_file_mmap(struct file
*file
, struct vm_area_struct
*vma
);
916 void policy_from_vma(union ldlm_policy_data
*policy
, struct vm_area_struct
*vma
,
917 unsigned long addr
, size_t count
);
918 struct vm_area_struct
*our_vma(struct mm_struct
*mm
, unsigned long addr
,
921 static inline void ll_invalidate_page(struct page
*vmpage
)
923 struct address_space
*mapping
= vmpage
->mapping
;
924 loff_t offset
= vmpage
->index
<< PAGE_SHIFT
;
926 LASSERT(PageLocked(vmpage
));
931 * truncate_complete_page() calls
932 * a_ops->invalidatepage()->cl_page_delete()->vvp_page_delete().
934 ll_teardown_mmaps(mapping
, offset
, offset
+ PAGE_SIZE
);
935 truncate_complete_page(mapping
, vmpage
);
938 #define ll_s2sbi(sb) (s2lsi(sb)->lsi_llsbi)
940 /* don't need an addref as the sb_info should be holding one */
941 static inline struct obd_export
*ll_s2dtexp(struct super_block
*sb
)
943 return ll_s2sbi(sb
)->ll_dt_exp
;
946 /* don't need an addref as the sb_info should be holding one */
947 static inline struct obd_export
*ll_s2mdexp(struct super_block
*sb
)
949 return ll_s2sbi(sb
)->ll_md_exp
;
952 static inline struct client_obd
*sbi2mdc(struct ll_sb_info
*sbi
)
954 struct obd_device
*obd
= sbi
->ll_md_exp
->exp_obd
;
961 /* FIXME: replace the name of this with LL_SB to conform to kernel stuff */
962 static inline struct ll_sb_info
*ll_i2sbi(struct inode
*inode
)
964 return ll_s2sbi(inode
->i_sb
);
967 static inline struct obd_export
*ll_i2dtexp(struct inode
*inode
)
969 return ll_s2dtexp(inode
->i_sb
);
972 static inline struct obd_export
*ll_i2mdexp(struct inode
*inode
)
974 return ll_s2mdexp(inode
->i_sb
);
977 static inline struct lu_fid
*ll_inode2fid(struct inode
*inode
)
982 fid
= &ll_i2info(inode
)->lli_fid
;
987 static inline loff_t
ll_file_maxbytes(struct inode
*inode
)
989 struct cl_object
*obj
= ll_i2info(inode
)->lli_clob
;
992 return MAX_LFS_FILESIZE
;
994 return min_t(loff_t
, cl_object_maxbytes(obj
), MAX_LFS_FILESIZE
);
998 extern const struct xattr_handler
*ll_xattr_handlers
[];
1000 #define XATTR_USER_T 1
1001 #define XATTR_TRUSTED_T 2
1002 #define XATTR_SECURITY_T 3
1003 #define XATTR_ACL_ACCESS_T 4
1004 #define XATTR_ACL_DEFAULT_T 5
1005 #define XATTR_LUSTRE_T 6
1006 #define XATTR_OTHER_T 7
1008 ssize_t
ll_listxattr(struct dentry
*dentry
, char *buffer
, size_t size
);
1009 int ll_xattr_list(struct inode
*inode
, const char *name
, int type
,
1010 void *buffer
, size_t size
, __u64 valid
);
1011 const struct xattr_handler
*get_xattr_type(const char *name
);
1014 * Common IO arguments for various VFS I/O interfaces.
1016 int cl_sb_init(struct super_block
*sb
);
1017 int cl_sb_fini(struct super_block
*sb
);
1019 enum ras_update_flags
{
1023 void ll_ra_count_put(struct ll_sb_info
*sbi
, unsigned long len
);
1024 void ll_ra_stats_inc(struct inode
*inode
, enum ra_stat which
);
1027 #define LL_SA_RPC_MIN 2
1028 #define LL_SA_RPC_DEF 32
1029 #define LL_SA_RPC_MAX 8192
1031 #define LL_SA_CACHE_BIT 5
1032 #define LL_SA_CACHE_SIZE (1 << LL_SA_CACHE_BIT)
1033 #define LL_SA_CACHE_MASK (LL_SA_CACHE_SIZE - 1)
1035 /* per inode struct, for dir only */
1036 struct ll_statahead_info
{
1037 struct dentry
*sai_dentry
;
1038 atomic_t sai_refcount
; /* when access this struct, hold
1041 unsigned int sai_max
; /* max ahead of lookup */
1042 __u64 sai_sent
; /* stat requests sent count */
1043 __u64 sai_replied
; /* stat requests which received
1046 __u64 sai_index
; /* index of statahead entry */
1047 __u64 sai_index_wait
; /* index of entry which is the
1048 * caller is waiting for
1050 __u64 sai_hit
; /* hit count */
1051 __u64 sai_miss
; /* miss count:
1052 * for "ls -al" case, it includes
1053 * hidden dentry miss;
1054 * for "ls -l" case, it does not
1055 * include hidden dentry miss.
1056 * "sai_miss_hidden" is used for
1059 unsigned int sai_consecutive_miss
; /* consecutive miss */
1060 unsigned int sai_miss_hidden
;/* "ls -al", but first dentry
1061 * is not a hidden one
1063 unsigned int sai_skip_hidden
;/* skipped hidden dentry count */
1064 unsigned int sai_ls_all
:1, /* "ls -al", do stat-ahead for
1067 sai_agl_valid
:1,/* AGL is valid for the dir */
1068 sai_in_readpage
:1;/* statahead is in readdir() */
1069 wait_queue_head_t sai_waitq
; /* stat-ahead wait queue */
1070 struct ptlrpc_thread sai_thread
; /* stat-ahead thread */
1071 struct ptlrpc_thread sai_agl_thread
; /* AGL thread */
1072 struct list_head sai_interim_entries
; /* entries which got async
1073 * stat reply, but not
1076 struct list_head sai_entries
; /* completed entries */
1077 struct list_head sai_agls
; /* AGLs to be sent */
1078 struct list_head sai_cache
[LL_SA_CACHE_SIZE
];
1079 spinlock_t sai_cache_lock
[LL_SA_CACHE_SIZE
];
1080 atomic_t sai_cache_count
; /* entry count in cache */
1083 int ll_statahead(struct inode
*dir
, struct dentry
**dentry
, bool unplug
);
1084 void ll_authorize_statahead(struct inode
*dir
, void *key
);
1085 void ll_deauthorize_statahead(struct inode
*dir
, void *key
);
1087 blkcnt_t
dirty_cnt(struct inode
*inode
);
1089 int cl_glimpse_size0(struct inode
*inode
, int agl
);
1090 int cl_glimpse_lock(const struct lu_env
*env
, struct cl_io
*io
,
1091 struct inode
*inode
, struct cl_object
*clob
, int agl
);
1093 static inline int cl_glimpse_size(struct inode
*inode
)
1095 return cl_glimpse_size0(inode
, 0);
1098 static inline int cl_agl(struct inode
*inode
)
1100 return cl_glimpse_size0(inode
, 1);
1103 static inline int ll_glimpse_size(struct inode
*inode
)
1105 struct ll_inode_info
*lli
= ll_i2info(inode
);
1108 down_read(&lli
->lli_glimpse_sem
);
1109 rc
= cl_glimpse_size(inode
);
1110 lli
->lli_glimpse_time
= cfs_time_current();
1111 up_read(&lli
->lli_glimpse_sem
);
1116 * dentry may statahead when statahead is enabled and current process has opened
1117 * parent directory, and this dentry hasn't accessed statahead cache before
1120 dentry_may_statahead(struct inode
*dir
, struct dentry
*dentry
)
1122 struct ll_inode_info
*lli
;
1123 struct ll_dentry_data
*ldd
;
1125 if (ll_i2sbi(dir
)->ll_sa_max
== 0)
1128 lli
= ll_i2info(dir
);
1131 * statahead is not allowed for this dir, there may be three causes:
1132 * 1. dir is not opened.
1133 * 2. statahead hit ratio is too low.
1134 * 3. previous stat started statahead thread failed.
1136 if (!lli
->lli_sa_enabled
)
1139 /* not the same process, don't statahead */
1140 if (lli
->lli_opendir_pid
!= current_pid())
1144 * When stating a dentry, kernel may trigger 'revalidate' or 'lookup'
1145 * multiple times, eg. for 'getattr', 'getxattr' and etc.
1146 * For patchless client, lookup intent is not accurate, which may
1147 * misguide statahead. For example:
1148 * The 'revalidate' call for 'getattr' and 'getxattr' of a dentry will
1149 * have the same intent -- IT_GETATTR, while one dentry should access
1150 * statahead cache once, otherwise statahead windows is messed up.
1151 * The solution is as following:
1152 * Assign 'lld_sa_generation' with 'lli_sa_generation' when a dentry
1153 * IT_GETATTR for the first time, and subsequent IT_GETATTR will
1154 * bypass interacting with statahead cache by checking
1155 * 'lld_sa_generation == lli->lli_sa_generation'.
1157 ldd
= ll_d2d(dentry
);
1158 if (ldd
->lld_sa_generation
== lli
->lli_sa_generation
)
1164 /* llite ioctl register support routine */
1170 #define LLIOC_MAX_CMD 256
1173 * Rules to write a callback function:
1176 * @magic: Dynamic ioctl call routine will feed this value with the pointer
1177 * returned to ll_iocontrol_register. Callback functions should use this
1178 * data to check the potential collasion of ioctl cmd. If collasion is
1179 * found, callback function should return LLIOC_CONT.
1180 * @rcp: The result of ioctl command.
1183 * If @magic matches the pointer returned by ll_iocontrol_data, the
1184 * callback should return LLIOC_STOP; return LLIOC_STOP otherwise.
1186 typedef enum llioc_iter (*llioc_callback_t
)(struct inode
*inode
,
1187 struct file
*file
, unsigned int cmd
, unsigned long arg
,
1188 void *magic
, int *rcp
);
1190 /* export functions */
1191 /* Register ioctl block dynamatically for a regular file.
1193 * @cmd: the array of ioctl command set
1194 * @count: number of commands in the @cmd
1195 * @cb: callback function, it will be called if an ioctl command is found to
1196 * belong to the command list @cmd.
1199 * A magic pointer will be returned if success;
1200 * otherwise, NULL will be returned.
1202 void *ll_iocontrol_register(llioc_callback_t cb
, int count
, unsigned int *cmd
);
1203 void ll_iocontrol_unregister(void *magic
);
1205 int cl_sync_file_range(struct inode
*inode
, loff_t start
, loff_t end
,
1206 enum cl_fsync_mode mode
, int ignore_layout
);
1208 /** direct write pages */
1209 struct ll_dio_pages
{
1210 /** page array to be written. we don't support
1211 * partial pages except the last one.
1213 struct page
**ldp_pages
;
1214 /* offset of each page */
1215 loff_t
*ldp_offsets
;
1216 /** if ldp_offsets is NULL, it means a sequential
1217 * pages to be written, then this is the file offset
1218 * of the first page.
1220 loff_t ldp_start_offset
;
1221 /** how many bytes are to be written. */
1223 /** # of pages in the array. */
1227 ssize_t
ll_direct_rw_pages(const struct lu_env
*env
, struct cl_io
*io
,
1228 int rw
, struct inode
*inode
,
1229 struct ll_dio_pages
*pv
);
1231 static inline int ll_file_nolock(const struct file
*file
)
1233 struct ll_file_data
*fd
= LUSTRE_FPRIVATE(file
);
1234 struct inode
*inode
= file_inode(file
);
1236 return ((fd
->fd_flags
& LL_FILE_IGNORE_LOCK
) ||
1237 (ll_i2sbi(inode
)->ll_flags
& LL_SBI_NOLCK
));
1240 static inline void ll_set_lock_data(struct obd_export
*exp
, struct inode
*inode
,
1241 struct lookup_intent
*it
, __u64
*bits
)
1243 if (!it
->it_lock_set
) {
1244 struct lustre_handle handle
;
1246 /* If this inode is a remote object, it will get two
1247 * separate locks in different namespaces, Master MDT,
1248 * where the name entry is, will grant LOOKUP lock,
1249 * remote MDT, where the object is, will grant
1250 * UPDATE|PERM lock. The inode will be attached to both
1251 * LOOKUP and PERM locks, so revoking either locks will
1252 * case the dcache being cleared
1254 if (it
->it_remote_lock_mode
) {
1255 handle
.cookie
= it
->it_remote_lock_handle
;
1256 CDEBUG(D_DLMTRACE
, "setting l_data to inode "DFID
"%p for remote lock %#llx\n",
1257 PFID(ll_inode2fid(inode
)), inode
,
1259 md_set_lock_data(exp
, &handle
, inode
, NULL
);
1262 handle
.cookie
= it
->it_lock_handle
;
1264 CDEBUG(D_DLMTRACE
, "setting l_data to inode "DFID
"%p for lock %#llx\n",
1265 PFID(ll_inode2fid(inode
)), inode
, handle
.cookie
);
1267 md_set_lock_data(exp
, &handle
, inode
, &it
->it_lock_bits
);
1268 it
->it_lock_set
= 1;
1272 *bits
= it
->it_lock_bits
;
1275 static inline int d_lustre_invalid(const struct dentry
*dentry
)
1277 return ll_d2d(dentry
)->lld_invalid
;
1281 * Mark dentry INVALID, if dentry refcount is zero (this is normally case for
1282 * ll_md_blocking_ast), unhash this dentry, and let dcache to reclaim it later;
1283 * else dput() of the last refcount will unhash this dentry and kill it.
1285 static inline void d_lustre_invalidate(struct dentry
*dentry
, int nested
)
1287 CDEBUG(D_DENTRY
, "invalidate dentry %pd (%p) parent %p inode %p refc %d\n",
1289 dentry
->d_parent
, d_inode(dentry
), d_count(dentry
));
1291 spin_lock_nested(&dentry
->d_lock
,
1292 nested
? DENTRY_D_LOCK_NESTED
: DENTRY_D_LOCK_NORMAL
);
1293 ll_d2d(dentry
)->lld_invalid
= 1;
1295 * We should be careful about dentries created by d_obtain_alias().
1296 * These dentries are not put in the dentry tree, instead they are
1297 * linked to sb->s_anon through dentry->d_hash.
1298 * shrink_dcache_for_umount() shrinks the tree and sb->s_anon list.
1299 * If we unhashed such a dentry, unmount would not be able to find
1300 * it and busy inodes would be reported.
1302 if (d_count(dentry
) == 0 && !(dentry
->d_flags
& DCACHE_DISCONNECTED
))
1304 spin_unlock(&dentry
->d_lock
);
1307 static inline void d_lustre_revalidate(struct dentry
*dentry
)
1309 spin_lock(&dentry
->d_lock
);
1310 LASSERT(ll_d2d(dentry
));
1311 ll_d2d(dentry
)->lld_invalid
= 0;
1312 spin_unlock(&dentry
->d_lock
);
1315 int ll_layout_conf(struct inode
*inode
, const struct cl_object_conf
*conf
);
1316 int ll_layout_refresh(struct inode
*inode
, __u32
*gen
);
1317 int ll_layout_restore(struct inode
*inode
, loff_t start
, __u64 length
);
1319 int ll_xattr_init(void);
1320 void ll_xattr_fini(void);
1322 int ll_page_sync_io(const struct lu_env
*env
, struct cl_io
*io
,
1323 struct cl_page
*page
, enum cl_req_type crt
);
1325 int ll_getparent(struct file
*file
, struct getparent __user
*arg
);
1328 int cl_setattr_ost(struct cl_object
*obj
, const struct iattr
*attr
,
1329 unsigned int attr_flags
);
1331 extern struct lu_env
*cl_inode_fini_env
;
1332 extern int cl_inode_fini_refcheck
;
1334 int cl_file_inode_init(struct inode
*inode
, struct lustre_md
*md
);
1335 void cl_inode_fini(struct inode
*inode
);
1337 __u64
cl_fid_build_ino(const struct lu_fid
*fid
, int api32
);
1338 __u32
cl_fid_build_gen(const struct lu_fid
*fid
);
1340 #endif /* LLITE_INTERNAL_H */