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, 2017, 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 <lustre_debug.h>
36 #include <lustre_disk.h> /* for s2sbi */
37 #include <lustre_eacl.h>
38 #include <lustre_linkea.h>
40 /* for struct cl_lock_descr and struct cl_io */
41 #include <cl_object.h>
42 #include <lustre_lmv.h>
43 #include <lustre_mdc.h>
44 #include <lustre_intent.h>
45 #include <linux/compat.h>
46 #include <linux/aio.h>
47 #include <lustre_compat.h>
49 #include "vvp_internal.h"
50 #include "range_lock.h"
57 #ifndef VM_FAULT_RETRY
58 #define VM_FAULT_RETRY 0
61 /* Kernel 3.1 kills LOOKUP_CONTINUE, LOOKUP_PARENT is equivalent to it.
62 * seem kernel commit 49084c3bb2055c401f3493c13edae14d49128ca0 */
63 #ifndef LOOKUP_CONTINUE
64 #define LOOKUP_CONTINUE LOOKUP_PARENT
67 /** Only used on client-side for indicating the tail of dir hash/offset. */
68 #define LL_DIR_END_OFF 0x7fffffffffffffffULL
69 #define LL_DIR_END_OFF_32BIT 0x7fffffffUL
71 /* 4UL * 1024 * 1024 */
72 #define LL_MAX_BLKSIZE_BITS 22
74 #define LL_IT2STR(it) ((it) ? ldlm_it2str((it)->it_op) : "0")
75 #define LUSTRE_FPRIVATE(file) ((file)->private_data)
77 struct ll_dentry_data {
78 struct lookup_intent *lld_it;
79 unsigned int lld_sa_generation;
80 unsigned int lld_invalid:1;
81 unsigned int lld_nfs_dentry:1;
82 struct rcu_head lld_rcu_head;
85 #define ll_d2d(de) ((struct ll_dentry_data*)((de)->d_fsdata))
87 #define LLI_INODE_MAGIC 0x111d0de5
88 #define LLI_INODE_DEAD 0xdeadd00d
90 struct ll_getname_data {
91 #ifdef HAVE_DIR_CONTEXT
92 struct dir_context ctx;
94 char *lgd_name; /* points to a buffer with NAME_MAX+1 size */
95 struct lu_fid lgd_fid; /* target fid we are looking for */
96 int lgd_found; /* inode matched? */
100 struct lu_env *lg_env;
102 struct cl_lock *lg_lock;
103 unsigned long lg_gid;
106 struct ll_inode_info {
107 __u32 lli_inode_magic;
110 volatile unsigned long lli_flags;
111 struct posix_acl *lli_posix_acl;
113 /* identifying fields for both metadata and data stacks. */
114 struct lu_fid lli_fid;
115 /* master inode fid for stripe directory */
116 struct lu_fid lli_pfid;
118 /* We need all three because every inode may be opened in different
120 struct obd_client_handle *lli_mds_read_och;
121 struct obd_client_handle *lli_mds_write_och;
122 struct obd_client_handle *lli_mds_exec_och;
123 __u64 lli_open_fd_read_count;
124 __u64 lli_open_fd_write_count;
125 __u64 lli_open_fd_exec_count;
126 /* Protects access to och pointers and their usage counters */
127 struct mutex lli_och_mutex;
129 struct inode lli_vfs_inode;
131 /* the most recent timestamps obtained from mds */
135 spinlock_t lli_agl_lock;
137 /* update atime from MDS no matter if it's older than
138 * local inode atime. */
139 unsigned int lli_update_atime:1;
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. */
146 /* serialize normal readdir and statahead-readdir. */
147 struct mutex lli_readdir_mutex;
149 /* metadata statahead */
150 /* since parent-child threads can share the same @file
151 * struct, "opendir_key" is the token when dir close for
152 * case of parent exit before child -- it is me should
153 * cleanup the dir readahead. */
154 void *lli_opendir_key;
155 struct ll_statahead_info *lli_sai;
156 /* protect statahead stuff. */
157 spinlock_t lli_sa_lock;
158 /* "opendir_pid" is the token when lookup/revalid
159 * -- I am the owner of dir statahead. */
160 pid_t lli_opendir_pid;
161 /* stat will try to access statahead entries or start
162 * statahead if this flag is set, and this flag will be
163 * set upon dir open, and cleared when dir is closed,
164 * statahead hit ratio is too low, or start statahead
166 unsigned int lli_sa_enabled:1;
167 /* generation for statahead */
168 unsigned int lli_sa_generation;
169 /* rw lock protects lli_lsm_md */
170 struct rw_semaphore lli_lsm_sem;
171 /* directory stripe information */
172 struct lmv_stripe_md *lli_lsm_md;
173 /* default directory stripe offset. This is extracted
174 * from the "dmv" xattr in order to decide which MDT to
175 * create a subdirectory on. The MDS itself fetches
176 * "dmv" and gets the rest of the default layout itself
177 * (count, hash, etc). */
178 __u32 lli_def_stripe_offset;
181 /* for non-directory */
183 struct mutex lli_size_mutex;
184 char *lli_symlink_name;
186 * struct rw_semaphore {
187 * signed long count; // align d.d_def_acl
188 * spinlock_t wait_lock; // align d.d_sa_lock
189 * struct list_head wait_list;
192 struct rw_semaphore lli_trunc_sem;
193 struct range_lock_tree lli_write_tree;
195 struct rw_semaphore lli_glimpse_sem;
196 ktime_t lli_glimpse_time;
197 struct list_head lli_agl_list;
200 /* for writepage() only to communicate to fsync */
203 /* protect the file heat fields */
204 spinlock_t lli_heat_lock;
205 __u32 lli_heat_flags;
206 struct obd_heat_instance lli_heat_instances[OBD_HEAT_COUNT];
209 * Whenever a process try to read/write the file, the
210 * jobid of the process will be saved here, and it'll
211 * be packed into the write PRC when flush later.
213 * So the read/write statistics for jobid will not be
214 * accurate if the file is shared by different jobs.
216 char lli_jobid[LUSTRE_JOBID_SIZE];
218 struct mutex lli_pcc_lock;
219 enum lu_pcc_state_flags lli_pcc_state;
220 struct pcc_inode *lli_pcc_inode;
224 /* XXX: For following frequent used members, although they maybe special
225 * used for non-directory object, it is some time-wasting to check
226 * whether the object is directory or not before using them. On the
227 * other hand, currently, sizeof(f) > sizeof(d), it cannot reduce
228 * the "ll_inode_info" size even if moving those members into u.f.
229 * So keep them out side.
231 * In the future, if more members are added only for directory,
232 * some of the following members can be moved into u.f.
234 struct cl_object *lli_clob;
236 /* mutex to request for layout lock exclusively. */
237 struct mutex lli_layout_mutex;
238 /* Layout version, protected by lli_layout_lock */
239 __u32 lli_layout_gen;
240 spinlock_t lli_layout_lock;
242 __u32 lli_projid; /* project id */
244 struct rw_semaphore lli_xattrs_list_rwsem;
245 struct mutex lli_xattrs_enq_lock;
246 struct list_head lli_xattrs; /* ll_xattr_entry->xe_list */
249 static inline __u32 ll_layout_version_get(struct ll_inode_info *lli)
253 spin_lock(&lli->lli_layout_lock);
254 gen = lli->lli_layout_gen;
255 spin_unlock(&lli->lli_layout_lock);
260 static inline void ll_layout_version_set(struct ll_inode_info *lli, __u32 gen)
262 spin_lock(&lli->lli_layout_lock);
263 lli->lli_layout_gen = gen;
264 spin_unlock(&lli->lli_layout_lock);
268 /* File data is modified. */
269 LLIF_DATA_MODIFIED = 0,
270 /* File is being restored */
271 LLIF_FILE_RESTORING = 1,
272 /* Xattr cache is attached to the file */
273 LLIF_XATTR_CACHE = 2,
274 /* Project inherit */
275 LLIF_PROJECT_INHERIT = 3,
278 static inline void ll_file_set_flag(struct ll_inode_info *lli,
279 enum ll_file_flags flag)
281 set_bit(flag, &lli->lli_flags);
284 static inline void ll_file_clear_flag(struct ll_inode_info *lli,
285 enum ll_file_flags flag)
287 clear_bit(flag, &lli->lli_flags);
290 static inline bool ll_file_test_flag(struct ll_inode_info *lli,
291 enum ll_file_flags flag)
293 return test_bit(flag, &lli->lli_flags);
296 static inline bool ll_file_test_and_clear_flag(struct ll_inode_info *lli,
297 enum ll_file_flags flag)
299 return test_and_clear_bit(flag, &lli->lli_flags);
302 int ll_xattr_cache_destroy(struct inode *inode);
304 int ll_xattr_cache_get(struct inode *inode,
310 static inline bool obd_connect_has_secctx(struct obd_connect_data *data)
312 #if defined(HAVE_SECURITY_DENTRY_INIT_SECURITY) && defined(CONFIG_SECURITY)
313 return data->ocd_connect_flags & OBD_CONNECT_FLAGS2 &&
314 data->ocd_connect_flags2 & OBD_CONNECT2_FILE_SECCTX;
317 #endif /* HAVE_SECURITY_DENTRY_INIT_SECURITY */
320 static inline void obd_connect_set_secctx(struct obd_connect_data *data)
322 #if defined(HAVE_SECURITY_DENTRY_INIT_SECURITY) && defined(CONFIG_SECURITY)
323 data->ocd_connect_flags2 |= OBD_CONNECT2_FILE_SECCTX;
324 #endif /* HAVE_SECURITY_DENTRY_INIT_SECURITY */
327 int ll_dentry_init_security(struct dentry *dentry, int mode, struct qstr *name,
328 const char **secctx_name, void **secctx,
330 int ll_inode_init_security(struct dentry *dentry, struct inode *inode,
333 int ll_listsecurity(struct inode *inode, char *secctx_name,
334 size_t secctx_name_size);
337 * Locking to guarantee consistency of non-atomic updates to long long i_size,
338 * consistency between file size and KMS.
340 * Implemented by ->lli_size_mutex and ->lsm_lock, nested in that order.
343 void ll_inode_size_lock(struct inode *inode);
344 void ll_inode_size_unlock(struct inode *inode);
346 static inline struct ll_inode_info *ll_i2info(struct inode *inode)
348 return container_of(inode, struct ll_inode_info, lli_vfs_inode);
351 static inline struct pcc_inode *ll_i2pcci(struct inode *inode)
353 return ll_i2info(inode)->lli_pcc_inode;
356 /* default to about 64M of readahead on a given system. */
357 #define SBI_DEFAULT_READAHEAD_MAX MiB_TO_PAGES(64UL)
359 /* default to read-ahead full files smaller than 2MB on the second read */
360 #define SBI_DEFAULT_READAHEAD_WHOLE_MAX MiB_TO_PAGES(2UL)
365 RA_STAT_DISTANT_READPAGE,
366 RA_STAT_MISS_IN_WINDOW,
367 RA_STAT_FAILED_GRAB_PAGE,
368 RA_STAT_FAILED_MATCH,
373 RA_STAT_MAX_IN_FLIGHT,
374 RA_STAT_WRONG_GRAB_PAGE,
375 RA_STAT_FAILED_REACH_END,
380 atomic_t ra_cur_pages;
381 unsigned long ra_max_pages;
382 unsigned long ra_max_pages_per_file;
383 unsigned long ra_max_read_ahead_whole_pages;
386 /* ra_io_arg will be filled in the beginning of ll_readahead with
387 * ras_lock, then the following ll_read_ahead_pages will read RA
388 * pages according to this arg, all the items in this structure are
389 * counted by page index.
392 unsigned long ria_start; /* start offset of read-ahead*/
393 unsigned long ria_end; /* end offset of read-ahead*/
394 unsigned long ria_reserved; /* reserved pages for read-ahead */
395 unsigned long ria_end_min; /* minimum end to cover current read */
396 bool ria_eof; /* reach end of file */
397 /* If stride read pattern is detected, ria_stoff means where
398 * stride read is started. Note: for normal read-ahead, the
399 * value here is meaningless, and also it will not be accessed*/
401 /* ria_length and ria_pages are the length and pages length in the
402 * stride I/O mode. And they will also be used to check whether
403 * it is stride I/O read-ahead in the read-ahead pages*/
404 unsigned long ria_length;
405 unsigned long ria_pages;
408 /* LL_HIST_MAX=32 causes an overflow */
409 #define LL_HIST_MAX 28
410 #define LL_HIST_START 12 /* buckets start at 2^12 = 4k */
411 #define LL_PROCESS_HIST_MAX 10
412 struct per_process_info {
414 struct obd_histogram pp_r_hist;
415 struct obd_histogram pp_w_hist;
418 /* pp_extents[LL_PROCESS_HIST_MAX] will hold the combined process info */
419 struct ll_rw_extents_info {
420 struct per_process_info pp_extents[LL_PROCESS_HIST_MAX + 1];
423 #define LL_OFFSET_HIST_MAX 100
424 struct ll_rw_process_info {
427 loff_t rw_range_start;
429 loff_t rw_last_file_pos;
431 size_t rw_smallest_extent;
432 size_t rw_largest_extent;
433 struct ll_file_data *rw_last_file;
436 enum stats_track_type {
437 STATS_TRACK_ALL = 0, /* track all processes */
438 STATS_TRACK_PID, /* track process with this pid */
439 STATS_TRACK_PPID, /* track processes with this ppid */
440 STATS_TRACK_GID, /* track processes with this gid */
444 /* flags for sbi->ll_flags */
445 #define LL_SBI_NOLCK 0x01 /* DLM locking disabled (directio-only) */
446 #define LL_SBI_CHECKSUM 0x02 /* checksum each page as it's written */
447 #define LL_SBI_FLOCK 0x04
448 #define LL_SBI_USER_XATTR 0x08 /* support user xattr */
449 #define LL_SBI_ACL 0x10 /* support ACL */
450 /* LL_SBI_RMT_CLIENT 0x40 remote client */
451 #define LL_SBI_MDS_CAPA 0x80 /* support mds capa, obsolete */
452 #define LL_SBI_OSS_CAPA 0x100 /* support oss capa, obsolete */
453 #define LL_SBI_LOCALFLOCK 0x200 /* Local flocks support by kernel */
454 #define LL_SBI_LRU_RESIZE 0x400 /* lru resize support */
455 #define LL_SBI_LAZYSTATFS 0x800 /* lazystatfs mount option */
456 /* LL_SBI_SOM_PREVIEW 0x1000 SOM preview mount option, obsolete */
457 #define LL_SBI_32BIT_API 0x2000 /* generate 32 bit inodes. */
458 #define LL_SBI_64BIT_HASH 0x4000 /* support 64-bits dir hash/offset */
459 #define LL_SBI_AGL_ENABLED 0x8000 /* enable agl */
460 #define LL_SBI_VERBOSE 0x10000 /* verbose mount/umount */
461 #define LL_SBI_LAYOUT_LOCK 0x20000 /* layout lock support */
462 #define LL_SBI_USER_FID2PATH 0x40000 /* allow fid2path by unprivileged users */
463 #define LL_SBI_XATTR_CACHE 0x80000 /* support for xattr cache */
464 #define LL_SBI_NOROOTSQUASH 0x100000 /* do not apply root squash */
465 #define LL_SBI_ALWAYS_PING 0x200000 /* always ping even if server
467 #define LL_SBI_FAST_READ 0x400000 /* fast read support */
468 #define LL_SBI_FILE_SECCTX 0x800000 /* set file security context at create */
469 /* LL_SBI_PIO 0x1000000 parallel IO support, introduced in
471 #define LL_SBI_TINY_WRITE 0x2000000 /* tiny write support */
472 #define LL_SBI_FILE_HEAT 0x4000000 /* file heat support */
473 #define LL_SBI_FLAGS { \
503 /* This is embedded into llite super-blocks to keep track of connect
504 * flags (capabilities) supported by all imports given mount is
506 struct lustre_client_ocd {
507 /* This is conjunction of connect_flags across all imports
508 * (LOVs) this mount is connected to. This field is updated by
509 * cl_ocd_update() under ->lco_lock. */
511 struct mutex lco_lock;
512 struct obd_export *lco_md_exp;
513 struct obd_export *lco_dt_exp;
517 /* this protects pglist and ra_info. It isn't safe to
518 * grab from interrupt contexts */
520 spinlock_t ll_pp_extent_lock; /* pp_extent entry*/
521 spinlock_t ll_process_lock; /* ll_rw_process_info */
522 struct obd_uuid ll_sb_uuid;
523 struct obd_export *ll_md_exp;
524 struct obd_export *ll_dt_exp;
525 struct obd_device *ll_md_obd;
526 struct obd_device *ll_dt_obd;
527 struct dentry *ll_debugfs_entry;
528 struct lu_fid ll_root_fid; /* root object fid */
531 unsigned int ll_umounting:1,
532 ll_xattr_cache_enabled:1,
533 ll_xattr_cache_set:1, /* already set to 0/1 */
534 ll_client_common_fill_super_succeeded:1,
537 struct lustre_client_ocd ll_lco;
539 struct lprocfs_stats *ll_stats; /* lprocfs stats counter */
541 /* Used to track "unstable" pages on a client, and maintain a
542 * LRU list of clean pages. An "unstable" page is defined as
543 * any page which is sent to a server as part of a bulk request,
544 * but is uncommitted to stable storage. */
545 struct cl_client_cache *ll_cache;
547 struct lprocfs_stats *ll_ra_stats;
549 struct ll_ra_info ll_ra_info;
550 unsigned int ll_namelen;
551 struct file_operations *ll_fop;
553 struct lu_site *ll_site;
554 struct cl_device *ll_cl;
556 struct ll_rw_extents_info ll_rw_extents_info;
557 int ll_extent_process_count;
558 struct ll_rw_process_info ll_rw_process_info[LL_PROCESS_HIST_MAX];
559 unsigned int ll_offset_process_count;
560 struct ll_rw_process_info ll_rw_offset_info[LL_OFFSET_HIST_MAX];
561 unsigned int ll_rw_offset_entry_count;
562 int ll_stats_track_id;
563 enum stats_track_type ll_stats_track_type;
566 /* metadata stat-ahead */
567 unsigned int ll_sa_running_max;/* max concurrent
568 * statahead instances */
569 unsigned int ll_sa_max; /* max statahead RPCs */
570 atomic_t ll_sa_total; /* statahead thread started
572 atomic_t ll_sa_wrong; /* statahead thread stopped for
574 atomic_t ll_sa_running; /* running statahead thread
576 atomic_t ll_agl_total; /* AGL thread started count */
578 dev_t ll_sdev_orig; /* save s_dev before assign for
581 struct root_squash_info ll_squash;
584 /* st_blksize returned by stat(2), when non-zero */
585 unsigned int ll_stat_blksize;
587 struct kset ll_kset; /* sysfs object */
588 struct completion ll_kobj_unregister;
591 unsigned int ll_heat_decay_weight;
592 unsigned int ll_heat_period_second;
594 /* filesystem fsname */
595 char ll_fsname[LUSTRE_MAXFSNAME + 1];
597 /* Persistent Client Cache */
598 struct pcc_super ll_pcc_super;
601 #define SBI_DEFAULT_HEAT_DECAY_WEIGHT ((80 * 256 + 50) / 100)
602 #define SBI_DEFAULT_HEAT_PERIOD_SECOND (60)
604 * per file-descriptor read-ahead data.
606 struct ll_readahead_state {
609 * index of the last page that read(2) needed and that wasn't in the
610 * cache. Used by ras_update() to detect seeks.
612 * XXX nikita: if access seeks into cached region, Lustre doesn't see
615 unsigned long ras_last_readpage;
617 * number of pages read after last read-ahead window reset. As window
618 * is reset on each seek, this is effectively a number of consecutive
619 * accesses. Maybe ->ras_accessed_in_window is better name.
621 * XXX nikita: window is also reset (by ras_update()) when Lustre
622 * believes that memory pressure evicts read-ahead pages. In that
623 * case, it probably doesn't make sense to expand window to
624 * PTLRPC_MAX_BRW_PAGES on the third access.
626 unsigned long ras_consecutive_pages;
628 * number of read requests after the last read-ahead window reset
629 * As window is reset on each seek, this is effectively the number
630 * on consecutive read request and is used to trigger read-ahead.
632 unsigned long ras_consecutive_requests;
634 * Parameters of current read-ahead window. Handled by
635 * ras_update(). On the initial access to the file or after a seek,
636 * window is reset to 0. After 3 consecutive accesses, window is
637 * expanded to PTLRPC_MAX_BRW_PAGES. Afterwards, window is enlarged by
638 * PTLRPC_MAX_BRW_PAGES chunks up to ->ra_max_pages.
640 unsigned long ras_window_start, ras_window_len;
642 * Optimal RPC size. It decides how many pages will be sent
643 * for each read-ahead.
645 unsigned long ras_rpc_size;
647 * Where next read-ahead should start at. This lies within read-ahead
648 * window. Read-ahead window is read in pieces rather than at once
649 * because: 1. lustre limits total number of pages under read-ahead by
650 * ->ra_max_pages (see ll_ra_count_get()), 2. client cannot read pages
651 * not covered by DLM lock.
653 unsigned long ras_next_readahead;
655 * Total number of ll_file_read requests issued, reads originating
656 * due to mmap are not counted in this total. This value is used to
657 * trigger full file read-ahead after multiple reads to a small file.
659 unsigned long ras_requests;
661 * Page index with respect to the current request, these value
662 * will not be accurate when dealing with reads issued via mmap.
664 unsigned long ras_request_index;
666 * The following 3 items are used for detecting the stride I/O
668 * In stride I/O mode,
669 * ...............|-----data-----|****gap*****|--------|******|....
670 * offset |-stride_pages-|-stride_gap-|
671 * ras_stride_offset = offset;
672 * ras_stride_length = stride_pages + stride_gap;
673 * ras_stride_pages = stride_pages;
674 * Note: all these three items are counted by pages.
676 unsigned long ras_stride_length;
677 unsigned long ras_stride_pages;
678 pgoff_t ras_stride_offset;
680 * number of consecutive stride request count, and it is similar as
681 * ras_consecutive_requests, but used for stride I/O mode.
682 * Note: only more than 2 consecutive stride request are detected,
683 * stride read-ahead will be enable
685 unsigned long ras_consecutive_stride_requests;
688 extern struct kmem_cache *ll_file_data_slab;
689 struct lustre_handle;
690 struct ll_file_data {
691 struct ll_readahead_state fd_ras;
692 struct ll_grouplock fd_grouplock;
696 /* openhandle if lease exists for this file.
697 * Borrow lli->lli_och_mutex to protect assignment */
698 struct obd_client_handle *fd_lease_och;
699 struct obd_client_handle *fd_och;
700 struct file *fd_file;
701 /* Indicate whether need to report failure when close.
702 * true: failure is known, not report again.
703 * false: unknown failure, should report. */
704 bool fd_write_failed;
705 bool ll_lock_no_expand;
706 rwlock_t fd_lock; /* protect lcc list */
707 struct list_head fd_lccs; /* list of ll_cl_context */
708 /* Used by mirrored file to lead IOs to a specific mirror, usually
709 * for mirror resync. 0 means default. */
710 __u32 fd_designated_mirror;
711 /* The layout version when resync starts. Resync I/O should carry this
712 * layout version for verification to OST objects */
713 __u32 fd_layout_version;
714 struct pcc_file fd_pcc_file;
717 void llite_tunables_unregister(void);
718 int llite_tunables_register(void);
720 static inline struct inode *ll_info2i(struct ll_inode_info *lli)
722 return &lli->lli_vfs_inode;
725 __u32 ll_i2suppgid(struct inode *i);
726 void ll_i2gids(__u32 *suppgids, struct inode *i1,struct inode *i2);
728 static inline int ll_need_32bit_api(struct ll_sb_info *sbi)
730 #if BITS_PER_LONG == 32
732 #elif defined(CONFIG_COMPAT)
733 if (unlikely(sbi->ll_flags & LL_SBI_32BIT_API))
736 # ifdef CONFIG_X86_X32
737 /* in_compat_syscall() returns true when called from a kthread
738 * and CONFIG_X86_X32 is enabled, which is wrong. So check
739 * whether the caller comes from a syscall (ie. not a kthread)
740 * before calling in_compat_syscall(). */
741 if (current->flags & PF_KTHREAD)
745 return unlikely(in_compat_syscall());
747 return unlikely(sbi->ll_flags & LL_SBI_32BIT_API);
751 static inline bool ll_sbi_has_fast_read(struct ll_sb_info *sbi)
753 return !!(sbi->ll_flags & LL_SBI_FAST_READ);
756 static inline bool ll_sbi_has_tiny_write(struct ll_sb_info *sbi)
758 return !!(sbi->ll_flags & LL_SBI_TINY_WRITE);
761 static inline bool ll_sbi_has_file_heat(struct ll_sb_info *sbi)
763 return !!(sbi->ll_flags & LL_SBI_FILE_HEAT);
766 void ll_ras_enter(struct file *f);
768 /* llite/lcommon_misc.c */
769 int cl_ocd_update(struct obd_device *host, struct obd_device *watched,
770 enum obd_notify_event ev, void *owner);
771 int cl_get_grouplock(struct cl_object *obj, unsigned long gid, int nonblock,
772 struct ll_grouplock *lg);
773 void cl_put_grouplock(struct ll_grouplock *lg);
775 /* llite/lproc_llite.c */
776 int ll_debugfs_register_super(struct super_block *sb, const char *name);
777 void ll_debugfs_unregister_super(struct super_block *sb);
778 void ll_stats_ops_tally(struct ll_sb_info *sbi, int op, int count);
782 LPROC_LL_DIRTY_MISSES,
784 LPROC_LL_WRITE_BYTES,
809 LPROC_LL_ALLOC_INODE,
812 LPROC_LL_GETXATTR_HITS,
814 LPROC_LL_REMOVEXATTR,
816 LPROC_LL_FILE_OPCODES
820 struct ll_dir_chain {
823 static inline void ll_dir_chain_init(struct ll_dir_chain *chain)
827 static inline void ll_dir_chain_fini(struct ll_dir_chain *chain)
831 extern const struct file_operations ll_dir_operations;
832 extern const struct inode_operations ll_dir_inode_operations;
833 #ifdef HAVE_DIR_CONTEXT
834 int ll_dir_read(struct inode *inode, __u64 *pos, struct md_op_data *op_data,
835 struct dir_context *ctx);
837 int ll_dir_read(struct inode *inode, __u64 *pos, struct md_op_data *op_data,
838 void *cookie, filldir_t filldir);
840 int ll_get_mdt_idx(struct inode *inode);
841 int ll_get_mdt_idx_by_fid(struct ll_sb_info *sbi, const struct lu_fid *fid);
842 struct page *ll_get_dir_page(struct inode *dir, struct md_op_data *op_data,
843 __u64 offset, struct ll_dir_chain *chain);
844 void ll_release_page(struct inode *inode, struct page *page, bool remove);
847 extern const struct inode_operations ll_special_inode_operations;
849 struct inode *ll_iget(struct super_block *sb, ino_t hash,
850 struct lustre_md *lic);
851 int ll_test_inode_by_fid(struct inode *inode, void *opaque);
852 int ll_md_blocking_ast(struct ldlm_lock *, struct ldlm_lock_desc *,
853 void *data, int flag);
854 struct dentry *ll_splice_alias(struct inode *inode, struct dentry *de);
855 int ll_rmdir_entry(struct inode *dir, char *name, int namelen);
856 void ll_update_times(struct ptlrpc_request *request, struct inode *inode);
859 int ll_writepage(struct page *page, struct writeback_control *wbc);
860 int ll_writepages(struct address_space *, struct writeback_control *wbc);
861 int ll_readpage(struct file *file, struct page *page);
862 int ll_io_read_page(const struct lu_env *env, struct cl_io *io,
863 struct cl_page *page, struct file *file);
864 void ll_readahead_init(struct inode *inode, struct ll_readahead_state *ras);
865 int vvp_io_write_commit(const struct lu_env *env, struct cl_io *io);
868 void ll_cl_add(struct file *file, const struct lu_env *env, struct cl_io *io,
870 void ll_cl_remove(struct file *file, const struct lu_env *env);
871 struct ll_cl_context *ll_cl_find(struct file *file);
873 extern const struct address_space_operations ll_aops;
876 extern struct file_operations ll_file_operations;
877 extern struct file_operations ll_file_operations_flock;
878 extern struct file_operations ll_file_operations_noflock;
879 extern struct inode_operations ll_file_inode_operations;
880 extern int ll_have_md_lock(struct inode *inode, __u64 *bits,
881 enum ldlm_mode l_req_mode);
882 extern enum ldlm_mode ll_take_md_lock(struct inode *inode, __u64 bits,
883 struct lustre_handle *lockh, __u64 flags,
884 enum ldlm_mode mode);
886 int ll_file_open(struct inode *inode, struct file *file);
887 int ll_file_release(struct inode *inode, struct file *file);
888 int ll_release_openhandle(struct dentry *, struct lookup_intent *);
889 int ll_md_real_close(struct inode *inode, fmode_t fmode);
890 extern void ll_rw_stats_tally(struct ll_sb_info *sbi, pid_t pid,
891 struct ll_file_data *file, loff_t pos,
892 size_t count, int rw);
893 #ifdef HAVE_INODEOPS_ENHANCED_GETATTR
894 int ll_getattr(const struct path *path, struct kstat *stat,
895 u32 request_mask, unsigned int flags);
897 int ll_getattr(struct vfsmount *mnt, struct dentry *de, struct kstat *stat);
899 int ll_getattr_dentry(struct dentry *de, struct kstat *stat);
900 struct posix_acl *ll_get_acl(struct inode *inode, int type);
901 #ifdef HAVE_IOP_SET_ACL
902 #ifdef CONFIG_FS_POSIX_ACL
903 int ll_set_acl(struct inode *inode, struct posix_acl *acl, int type);
904 #else /* !CONFIG_FS_POSIX_ACL */
905 #define ll_set_acl NULL
906 #endif /* CONFIG_FS_POSIX_ACL */
909 int ll_migrate(struct inode *parent, struct file *file,
910 struct lmv_user_md *lum, const char *name);
911 int ll_get_fid_by_name(struct inode *parent, const char *name,
912 int namelen, struct lu_fid *fid, struct inode **inode);
913 #ifdef HAVE_GENERIC_PERMISSION_4ARGS
914 int ll_inode_permission(struct inode *inode, int mask, unsigned int flags);
916 # ifndef HAVE_INODE_PERMISION_2ARGS
917 int ll_inode_permission(struct inode *inode, int mask, struct nameidata *nd);
919 int ll_inode_permission(struct inode *inode, int mask);
922 int ll_ioctl_check_project(struct inode *inode, struct fsxattr *fa);
923 int ll_ioctl_fsgetxattr(struct inode *inode, unsigned int cmd,
925 int ll_ioctl_fssetxattr(struct inode *inode, unsigned int cmd,
928 int ll_lov_setstripe_ea_info(struct inode *inode, struct dentry *dentry,
929 __u64 flags, struct lov_user_md *lum,
931 int ll_lov_getstripe_ea_info(struct inode *inode, const char *filename,
932 struct lov_mds_md **lmm, int *lmm_size,
933 struct ptlrpc_request **request);
934 int ll_dir_setstripe(struct inode *inode, struct lov_user_md *lump,
936 int ll_dir_getstripe(struct inode *inode, void **lmmp,
937 int *lmm_size, struct ptlrpc_request **request,
939 #ifdef HAVE_FILE_FSYNC_4ARGS
940 int ll_fsync(struct file *file, loff_t start, loff_t end, int data);
941 #elif defined(HAVE_FILE_FSYNC_2ARGS)
942 int ll_fsync(struct file *file, int data);
944 int ll_fsync(struct file *file, struct dentry *dentry, int data);
946 int ll_merge_attr(const struct lu_env *env, struct inode *inode);
947 int ll_fid2path(struct inode *inode, void __user *arg);
948 int ll_data_version(struct inode *inode, __u64 *data_version, int flags);
949 int ll_hsm_release(struct inode *inode);
950 int ll_hsm_state_set(struct inode *inode, struct hsm_state_set *hss);
951 void ll_io_set_mirror(struct cl_io *io, const struct file *file);
955 int ll_d_init(struct dentry *de);
956 extern const struct dentry_operations ll_d_ops;
957 void ll_intent_drop_lock(struct lookup_intent *);
958 void ll_intent_release(struct lookup_intent *);
959 void ll_invalidate_aliases(struct inode *);
960 void ll_lookup_finish_locks(struct lookup_intent *it, struct dentry *dentry);
961 int ll_revalidate_it_finish(struct ptlrpc_request *request,
962 struct lookup_intent *it, struct dentry *de);
964 /* llite/llite_lib.c */
965 extern struct super_operations lustre_super_operations;
967 void ll_lli_init(struct ll_inode_info *lli);
968 int ll_fill_super(struct super_block *sb, struct vfsmount *mnt);
969 void ll_put_super(struct super_block *sb);
970 void ll_kill_super(struct super_block *sb);
971 struct inode *ll_inode_from_resource_lock(struct ldlm_lock *lock);
972 void ll_dir_clear_lsm_md(struct inode *inode);
973 void ll_clear_inode(struct inode *inode);
974 int ll_setattr_raw(struct dentry *dentry, struct iattr *attr,
975 enum op_xvalid xvalid, bool hsm_import);
976 int ll_setattr(struct dentry *de, struct iattr *attr);
977 int ll_statfs(struct dentry *de, struct kstatfs *sfs);
978 int ll_statfs_internal(struct ll_sb_info *sbi, struct obd_statfs *osfs,
980 int ll_update_inode(struct inode *inode, struct lustre_md *md);
981 void ll_update_inode_flags(struct inode *inode, int ext_flags);
982 int ll_read_inode2(struct inode *inode, void *opaque);
983 void ll_delete_inode(struct inode *inode);
984 int ll_iocontrol(struct inode *inode, struct file *file,
985 unsigned int cmd, unsigned long arg);
986 int ll_flush_ctx(struct inode *inode);
987 void ll_umount_begin(struct super_block *sb);
988 int ll_remount_fs(struct super_block *sb, int *flags, char *data);
989 #ifdef HAVE_SUPEROPS_USE_DENTRY
990 int ll_show_options(struct seq_file *seq, struct dentry *dentry);
992 int ll_show_options(struct seq_file *seq, struct vfsmount *vfs);
994 void ll_dirty_page_discard_warn(struct page *page, int ioret);
995 int ll_prep_inode(struct inode **inode, struct ptlrpc_request *req,
996 struct super_block *, struct lookup_intent *);
997 int ll_obd_statfs(struct inode *inode, void __user *arg);
998 int ll_get_max_mdsize(struct ll_sb_info *sbi, int *max_mdsize);
999 int ll_get_default_mdsize(struct ll_sb_info *sbi, int *default_mdsize);
1000 int ll_set_default_mdsize(struct ll_sb_info *sbi, int default_mdsize);
1003 LUSTRE_OPC_MKDIR = 0,
1004 LUSTRE_OPC_SYMLINK = 1,
1005 LUSTRE_OPC_MKNOD = 2,
1006 LUSTRE_OPC_CREATE = 3,
1010 void ll_unlock_md_op_lsm(struct md_op_data *op_data);
1011 struct md_op_data *ll_prep_md_op_data(struct md_op_data *op_data,
1012 struct inode *i1, struct inode *i2,
1013 const char *name, size_t namelen,
1014 __u32 mode, __u32 opc, void *data);
1015 void ll_finish_md_op_data(struct md_op_data *op_data);
1016 int ll_get_obd_name(struct inode *inode, unsigned int cmd, unsigned long arg);
1017 void ll_compute_rootsquash_state(struct ll_sb_info *sbi);
1018 ssize_t ll_copy_user_md(const struct lov_user_md __user *md,
1019 struct lov_user_md **kbuf);
1020 void ll_open_cleanup(struct super_block *sb, struct ptlrpc_request *open_req);
1022 void ll_dom_finish_open(struct inode *inode, struct ptlrpc_request *req,
1023 struct lookup_intent *it);
1025 /* Compute expected user md size when passing in a md from user space */
1026 static inline ssize_t ll_lov_user_md_size(const struct lov_user_md *lum)
1028 switch (lum->lmm_magic) {
1029 case LOV_USER_MAGIC_V1:
1030 return sizeof(struct lov_user_md_v1);
1031 case LOV_USER_MAGIC_V3:
1032 return sizeof(struct lov_user_md_v3);
1033 case LOV_USER_MAGIC_SPECIFIC:
1034 if (lum->lmm_stripe_count > LOV_MAX_STRIPE_COUNT)
1037 return lov_user_md_size(lum->lmm_stripe_count,
1038 LOV_USER_MAGIC_SPECIFIC);
1039 case LOV_USER_MAGIC_COMP_V1:
1040 return ((struct lov_comp_md_v1 *)lum)->lcm_size;
1041 case LOV_USER_MAGIC_FOREIGN:
1042 return foreign_size(lum);
1048 /* llite/llite_nfs.c */
1049 extern struct export_operations lustre_export_operations;
1050 __u32 get_uuid2int(const char *name, int len);
1051 struct inode *search_inode_for_lustre(struct super_block *sb,
1052 const struct lu_fid *fid);
1053 int ll_dir_get_parent_fid(struct inode *dir, struct lu_fid *parent_fid);
1055 /* llite/symlink.c */
1056 extern struct inode_operations ll_fast_symlink_inode_operations;
1059 * IO arguments for various VFS I/O interfaces.
1061 struct vvp_io_args {
1062 /** normal/sendfile/splice */
1063 enum vvp_io_subtype via_io_subtype;
1067 struct kiocb *via_iocb;
1068 struct iov_iter *via_iter;
1071 struct pipe_inode_info *via_pipe;
1072 unsigned int via_flags;
1082 struct ll_cl_context {
1083 struct list_head lcc_list;
1085 const struct lu_env *lcc_env;
1086 struct cl_io *lcc_io;
1087 struct cl_page *lcc_page;
1088 enum lcc_type lcc_type;
1091 struct ll_thread_info {
1092 struct iov_iter lti_iter;
1093 struct vvp_io_args lti_args;
1094 struct ra_io_arg lti_ria;
1095 struct ll_cl_context lti_io_ctx;
1098 extern struct lu_context_key ll_thread_key;
1100 static inline struct ll_thread_info *ll_env_info(const struct lu_env *env)
1102 struct ll_thread_info *lti;
1104 lti = lu_context_key_get(&env->le_ctx, &ll_thread_key);
1105 LASSERT(lti != NULL);
1110 static inline struct vvp_io_args *ll_env_args(const struct lu_env *env,
1111 enum vvp_io_subtype type)
1113 struct vvp_io_args *via = &ll_env_info(env)->lti_args;
1115 via->via_io_subtype = type;
1120 /* llite/llite_mmap.c */
1122 int ll_teardown_mmaps(struct address_space *mapping, __u64 first, __u64 last);
1123 int ll_file_mmap(struct file * file, struct vm_area_struct * vma);
1124 void policy_from_vma(union ldlm_policy_data *policy, struct vm_area_struct *vma,
1125 unsigned long addr, size_t count);
1126 struct vm_area_struct *our_vma(struct mm_struct *mm, unsigned long addr,
1129 static inline void ll_invalidate_page(struct page *vmpage)
1131 struct address_space *mapping = vmpage->mapping;
1132 loff_t offset = vmpage->index << PAGE_SHIFT;
1134 LASSERT(PageLocked(vmpage));
1135 if (mapping == NULL)
1139 * truncate_complete_page() calls
1140 * a_ops->invalidatepage()->cl_page_delete()->vvp_page_delete().
1142 ll_teardown_mmaps(mapping, offset, offset + PAGE_SIZE);
1143 truncate_complete_page(mapping, vmpage);
1146 #define ll_s2sbi(sb) (s2lsi(sb)->lsi_llsbi)
1148 /* don't need an addref as the sb_info should be holding one */
1149 static inline struct obd_export *ll_s2dtexp(struct super_block *sb)
1151 return ll_s2sbi(sb)->ll_dt_exp;
1154 /* don't need an addref as the sb_info should be holding one */
1155 static inline struct obd_export *ll_s2mdexp(struct super_block *sb)
1157 return ll_s2sbi(sb)->ll_md_exp;
1160 static inline struct client_obd *sbi2mdc(struct ll_sb_info *sbi)
1162 struct obd_device *obd = sbi->ll_md_exp->exp_obd;
1168 // FIXME: replace the name of this with LL_SB to conform to kernel stuff
1169 static inline struct ll_sb_info *ll_i2sbi(struct inode *inode)
1171 return ll_s2sbi(inode->i_sb);
1174 static inline struct obd_export *ll_i2dtexp(struct inode *inode)
1176 return ll_s2dtexp(inode->i_sb);
1179 static inline struct obd_export *ll_i2mdexp(struct inode *inode)
1181 return ll_s2mdexp(inode->i_sb);
1184 static inline struct lu_fid *ll_inode2fid(struct inode *inode)
1188 LASSERT(inode != NULL);
1189 fid = &ll_i2info(inode)->lli_fid;
1194 static inline loff_t ll_file_maxbytes(struct inode *inode)
1196 struct cl_object *obj = ll_i2info(inode)->lli_clob;
1199 return MAX_LFS_FILESIZE;
1201 return min_t(loff_t, cl_object_maxbytes(obj), MAX_LFS_FILESIZE);
1205 extern const struct xattr_handler *ll_xattr_handlers[];
1207 #define XATTR_USER_T 1
1208 #define XATTR_TRUSTED_T 2
1209 #define XATTR_SECURITY_T 3
1210 #define XATTR_ACL_ACCESS_T 4
1211 #define XATTR_ACL_DEFAULT_T 5
1212 #define XATTR_LUSTRE_T 6
1213 #define XATTR_OTHER_T 7
1215 ssize_t ll_listxattr(struct dentry *dentry, char *buffer, size_t size);
1216 int ll_xattr_list(struct inode *inode, const char *name, int type,
1217 void *buffer, size_t size, u64 valid);
1218 const struct xattr_handler *get_xattr_type(const char *name);
1221 * Common IO arguments for various VFS I/O interfaces.
1223 int cl_sb_init(struct super_block *sb);
1224 int cl_sb_fini(struct super_block *sb);
1226 enum ras_update_flags {
1230 void ll_ra_count_put(struct ll_sb_info *sbi, unsigned long len);
1231 void ll_ra_stats_inc(struct inode *inode, enum ra_stat which);
1235 #define LL_SA_RPC_MIN 2
1236 #define LL_SA_RPC_DEF 32
1237 #define LL_SA_RPC_MAX 512
1239 /* XXX: If want to support more concurrent statahead instances,
1240 * please consider to decentralize the RPC lists attached
1241 * on related import, such as imp_{sending,delayed}_list.
1243 #define LL_SA_RUNNING_MAX 256
1244 #define LL_SA_RUNNING_DEF 16
1246 #define LL_SA_CACHE_BIT 5
1247 #define LL_SA_CACHE_SIZE (1 << LL_SA_CACHE_BIT)
1248 #define LL_SA_CACHE_MASK (LL_SA_CACHE_SIZE - 1)
1250 /* per inode struct, for dir only */
1251 struct ll_statahead_info {
1252 struct dentry *sai_dentry;
1253 atomic_t sai_refcount; /* when access this struct, hold
1255 unsigned int sai_max; /* max ahead of lookup */
1256 __u64 sai_sent; /* stat requests sent count */
1257 __u64 sai_replied; /* stat requests which received
1259 __u64 sai_index; /* index of statahead entry */
1260 __u64 sai_index_wait; /* index of entry which is the
1261 * caller is waiting for */
1262 __u64 sai_hit; /* hit count */
1263 __u64 sai_miss; /* miss count:
1264 * for "ls -al" case, includes
1265 * hidden dentry miss;
1266 * for "ls -l" case, it does not
1267 * include hidden dentry miss.
1268 * "sai_miss_hidden" is used for
1271 unsigned int sai_consecutive_miss; /* consecutive miss */
1272 unsigned int sai_miss_hidden;/* "ls -al", but first dentry
1273 * is not a hidden one */
1274 unsigned int sai_skip_hidden;/* skipped hidden dentry count
1276 unsigned int sai_ls_all:1, /* "ls -al", do stat-ahead for
1278 sai_agl_valid:1,/* AGL is valid for the dir */
1279 sai_in_readpage:1;/* statahead is in readdir()*/
1280 wait_queue_head_t sai_waitq; /* stat-ahead wait queue */
1281 struct ptlrpc_thread sai_thread; /* stat-ahead thread */
1282 struct ptlrpc_thread sai_agl_thread; /* AGL thread */
1283 struct list_head sai_interim_entries; /* entries which got async
1284 * stat reply, but not
1286 struct list_head sai_entries; /* completed entries */
1287 struct list_head sai_agls; /* AGLs to be sent */
1288 struct list_head sai_cache[LL_SA_CACHE_SIZE];
1289 spinlock_t sai_cache_lock[LL_SA_CACHE_SIZE];
1290 atomic_t sai_cache_count; /* entry count in cache */
1293 int ll_statahead(struct inode *dir, struct dentry **dentry, bool unplug);
1294 void ll_authorize_statahead(struct inode *dir, void *key);
1295 void ll_deauthorize_statahead(struct inode *dir, void *key);
1298 blkcnt_t dirty_cnt(struct inode *inode);
1300 int cl_glimpse_size0(struct inode *inode, int agl);
1301 int cl_glimpse_lock(const struct lu_env *env, struct cl_io *io,
1302 struct inode *inode, struct cl_object *clob, int agl);
1304 static inline int cl_glimpse_size(struct inode *inode)
1306 return cl_glimpse_size0(inode, 0);
1309 /* AGL is 'asychronous glimpse lock', which is a speculative lock taken as
1310 * part of statahead */
1311 static inline int cl_agl(struct inode *inode)
1313 return cl_glimpse_size0(inode, 1);
1316 int ll_file_lock_ahead(struct file *file, struct llapi_lu_ladvise *ladvise);
1318 int cl_io_get(struct inode *inode, struct lu_env **envout,
1319 struct cl_io **ioout, __u16 *refcheck);
1321 static inline int ll_glimpse_size(struct inode *inode)
1323 struct ll_inode_info *lli = ll_i2info(inode);
1326 down_read(&lli->lli_glimpse_sem);
1327 rc = cl_glimpse_size(inode);
1328 lli->lli_glimpse_time = ktime_get();
1329 up_read(&lli->lli_glimpse_sem);
1333 /* dentry may statahead when statahead is enabled and current process has opened
1334 * parent directory, and this dentry hasn't accessed statahead cache before */
1336 dentry_may_statahead(struct inode *dir, struct dentry *dentry)
1338 struct ll_inode_info *lli;
1339 struct ll_dentry_data *ldd;
1341 if (ll_i2sbi(dir)->ll_sa_max == 0)
1344 lli = ll_i2info(dir);
1346 /* statahead is not allowed for this dir, there may be three causes:
1347 * 1. dir is not opened.
1348 * 2. statahead hit ratio is too low.
1349 * 3. previous stat started statahead thread failed. */
1350 if (!lli->lli_sa_enabled)
1353 /* not the same process, don't statahead */
1354 if (lli->lli_opendir_pid != current_pid())
1358 * When stating a dentry, kernel may trigger 'revalidate' or 'lookup'
1359 * multiple times, eg. for 'getattr', 'getxattr' and etc.
1360 * For patchless client, lookup intent is not accurate, which may
1361 * misguide statahead. For example:
1362 * The 'revalidate' call for 'getattr' and 'getxattr' of a dentry will
1363 * have the same intent -- IT_GETATTR, while one dentry should access
1364 * statahead cache once, otherwise statahead windows is messed up.
1365 * The solution is as following:
1366 * Assign 'lld_sa_generation' with 'lli_sa_generation' when a dentry
1367 * IT_GETATTR for the first time, and subsequent IT_GETATTR will
1368 * bypass interacting with statahead cache by checking
1369 * 'lld_sa_generation == lli->lli_sa_generation'.
1371 ldd = ll_d2d(dentry);
1372 if (ldd != NULL && ldd->lld_sa_generation == lli->lli_sa_generation)
1378 int cl_sync_file_range(struct inode *inode, loff_t start, loff_t end,
1379 enum cl_fsync_mode mode, int ignore_layout);
1381 static inline int ll_file_nolock(const struct file *file)
1383 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
1384 struct inode *inode = file_inode((struct file *)file);
1386 LASSERT(fd != NULL);
1387 return ((fd->fd_flags & LL_FILE_IGNORE_LOCK) ||
1388 (ll_i2sbi(inode)->ll_flags & LL_SBI_NOLCK));
1391 static inline void ll_set_lock_data(struct obd_export *exp, struct inode *inode,
1392 struct lookup_intent *it, __u64 *bits)
1394 if (!it->it_lock_set) {
1395 struct lustre_handle handle;
1397 /* If this inode is a remote object, it will get two
1398 * separate locks in different namespaces, Master MDT,
1399 * where the name entry is, will grant LOOKUP lock,
1400 * remote MDT, where the object is, will grant
1401 * UPDATE|PERM lock. The inode will be attched to both
1402 * LOOKUP and PERM locks, so revoking either locks will
1403 * case the dcache being cleared */
1404 if (it->it_remote_lock_mode) {
1405 handle.cookie = it->it_remote_lock_handle;
1406 CDEBUG(D_DLMTRACE, "setting l_data to inode "DFID
1407 "(%p) for remote lock %#llx\n",
1408 PFID(ll_inode2fid(inode)), inode,
1410 md_set_lock_data(exp, &handle, inode, NULL);
1413 handle.cookie = it->it_lock_handle;
1415 CDEBUG(D_DLMTRACE, "setting l_data to inode "DFID"(%p)"
1416 " for lock %#llx\n",
1417 PFID(ll_inode2fid(inode)), inode, handle.cookie);
1419 md_set_lock_data(exp, &handle, inode, &it->it_lock_bits);
1420 it->it_lock_set = 1;
1424 *bits = it->it_lock_bits;
1427 static inline void ll_lock_dcache(struct inode *inode)
1429 #ifdef HAVE_DCACHE_LOCK
1430 spin_lock(&dcache_lock);
1432 spin_lock(&inode->i_lock);
1436 static inline void ll_unlock_dcache(struct inode *inode)
1438 #ifdef HAVE_DCACHE_LOCK
1439 spin_unlock(&dcache_lock);
1441 spin_unlock(&inode->i_lock);
1445 static inline int d_lustre_invalid(const struct dentry *dentry)
1447 struct ll_dentry_data *lld = ll_d2d(dentry);
1449 return (lld == NULL) || lld->lld_invalid;
1452 static inline void __d_lustre_invalidate(struct dentry *dentry)
1454 struct ll_dentry_data *lld = ll_d2d(dentry);
1457 lld->lld_invalid = 1;
1461 * Mark dentry INVALID, if dentry refcount is zero (this is normally case for
1462 * ll_md_blocking_ast), unhash this dentry, and let dcache to reclaim it later;
1463 * else dput() of the last refcount will unhash this dentry and kill it.
1465 static inline void d_lustre_invalidate(struct dentry *dentry, int nested)
1467 CDEBUG(D_DENTRY, "invalidate dentry %.*s (%p) parent %p inode %p "
1468 "refc %d\n", dentry->d_name.len, dentry->d_name.name, dentry,
1469 dentry->d_parent, dentry->d_inode, ll_d_count(dentry));
1471 spin_lock_nested(&dentry->d_lock,
1472 nested ? DENTRY_D_LOCK_NESTED : DENTRY_D_LOCK_NORMAL);
1473 __d_lustre_invalidate(dentry);
1475 * We should be careful about dentries created by d_obtain_alias().
1476 * These dentries are not put in the dentry tree, instead they are
1477 * linked to sb->s_anon through dentry->d_hash.
1478 * shrink_dcache_for_umount() shrinks the tree and sb->s_anon list.
1479 * If we unhashed such a dentry, unmount would not be able to find
1480 * it and busy inodes would be reported.
1482 if (ll_d_count(dentry) == 0 && !(dentry->d_flags & DCACHE_DISCONNECTED))
1484 spin_unlock(&dentry->d_lock);
1487 static inline void d_lustre_revalidate(struct dentry *dentry)
1489 spin_lock(&dentry->d_lock);
1490 LASSERT(ll_d2d(dentry) != NULL);
1491 ll_d2d(dentry)->lld_invalid = 0;
1492 spin_unlock(&dentry->d_lock);
1495 static inline dev_t ll_compat_encode_dev(dev_t dev)
1497 /* The compat_sys_*stat*() syscalls will fail unless the
1498 * device majors and minors are both less than 256. Note that
1499 * the value returned here will be passed through
1500 * old_encode_dev() in cp_compat_stat(). And so we are not
1501 * trying to return a valid compat (u16) device number, just
1502 * one that will pass the old_valid_dev() check. */
1504 return MKDEV(MAJOR(dev) & 0xff, MINOR(dev) & 0xff);
1507 int ll_layout_conf(struct inode *inode, const struct cl_object_conf *conf);
1508 int ll_layout_refresh(struct inode *inode, __u32 *gen);
1509 int ll_layout_restore(struct inode *inode, loff_t start, __u64 length);
1510 int ll_layout_write_intent(struct inode *inode, enum layout_intent_opc opc,
1511 struct lu_extent *ext);
1513 int ll_xattr_init(void);
1514 void ll_xattr_fini(void);
1516 int ll_page_sync_io(const struct lu_env *env, struct cl_io *io,
1517 struct cl_page *page, enum cl_req_type crt);
1519 int ll_getparent(struct file *file, struct getparent __user *arg);
1522 int cl_setattr_ost(struct cl_object *obj, const struct iattr *attr,
1523 enum op_xvalid xvalid, unsigned int attr_flags);
1525 extern struct lu_env *cl_inode_fini_env;
1526 extern __u16 cl_inode_fini_refcheck;
1528 int cl_file_inode_init(struct inode *inode, struct lustre_md *md);
1529 void cl_inode_fini(struct inode *inode);
1531 u64 cl_fid_build_ino(const struct lu_fid *fid, int api32);
1532 u32 cl_fid_build_gen(const struct lu_fid *fid);
1534 #endif /* LLITE_INTERNAL_H */