incore.h 24 KB

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  1. /* SPDX-License-Identifier: GPL-2.0-only */
  2. /*
  3. * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
  4. * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved.
  5. */
  6. #ifndef __INCORE_DOT_H__
  7. #define __INCORE_DOT_H__
  8. #include <linux/fs.h>
  9. #include <linux/kobject.h>
  10. #include <linux/workqueue.h>
  11. #include <linux/dlm.h>
  12. #include <linux/buffer_head.h>
  13. #include <linux/rcupdate.h>
  14. #include <linux/rculist_bl.h>
  15. #include <linux/completion.h>
  16. #include <linux/rbtree.h>
  17. #include <linux/ktime.h>
  18. #include <linux/percpu.h>
  19. #include <linux/lockref.h>
  20. #include <linux/rhashtable.h>
  21. #define DIO_WAIT 0x00000010
  22. #define DIO_METADATA 0x00000020
  23. struct gfs2_log_operations;
  24. struct gfs2_bufdata;
  25. struct gfs2_holder;
  26. struct gfs2_glock;
  27. struct gfs2_quota_data;
  28. struct gfs2_trans;
  29. struct gfs2_jdesc;
  30. struct gfs2_sbd;
  31. struct lm_lockops;
  32. typedef void (*gfs2_glop_bh_t) (struct gfs2_glock *gl, unsigned int ret);
  33. struct gfs2_log_header_host {
  34. u64 lh_sequence; /* Sequence number of this transaction */
  35. u32 lh_flags; /* GFS2_LOG_HEAD_... */
  36. u32 lh_tail; /* Block number of log tail */
  37. u32 lh_blkno;
  38. s64 lh_local_total;
  39. s64 lh_local_free;
  40. s64 lh_local_dinodes;
  41. };
  42. /*
  43. * Structure of operations that are associated with each
  44. * type of element in the log.
  45. */
  46. struct gfs2_log_operations {
  47. void (*lo_before_commit) (struct gfs2_sbd *sdp, struct gfs2_trans *tr);
  48. void (*lo_after_commit) (struct gfs2_sbd *sdp, struct gfs2_trans *tr);
  49. void (*lo_before_scan) (struct gfs2_jdesc *jd,
  50. struct gfs2_log_header_host *head, int pass);
  51. int (*lo_scan_elements) (struct gfs2_jdesc *jd, unsigned int start,
  52. struct gfs2_log_descriptor *ld, __be64 *ptr,
  53. int pass);
  54. void (*lo_after_scan) (struct gfs2_jdesc *jd, int error, int pass);
  55. const char *lo_name;
  56. };
  57. #define GBF_FULL 1
  58. /**
  59. * Clone bitmaps (bi_clone):
  60. *
  61. * - When a block is freed, we remember the previous state of the block in the
  62. * clone bitmap, and only mark the block as free in the real bitmap.
  63. *
  64. * - When looking for a block to allocate, we check for a free block in the
  65. * clone bitmap, and if no clone bitmap exists, in the real bitmap.
  66. *
  67. * - For allocating a block, we mark it as allocated in the real bitmap, and if
  68. * a clone bitmap exists, also in the clone bitmap.
  69. *
  70. * - At the end of a log_flush, we copy the real bitmap into the clone bitmap
  71. * to make the clone bitmap reflect the current allocation state.
  72. * (Alternatively, we could remove the clone bitmap.)
  73. *
  74. * The clone bitmaps are in-core only, and is never written to disk.
  75. *
  76. * These steps ensure that blocks which have been freed in a transaction cannot
  77. * be reallocated in that same transaction.
  78. */
  79. struct gfs2_bitmap {
  80. struct buffer_head *bi_bh;
  81. char *bi_clone;
  82. unsigned long bi_flags;
  83. u32 bi_offset;
  84. u32 bi_start;
  85. u32 bi_bytes;
  86. u32 bi_blocks;
  87. };
  88. struct gfs2_rgrpd {
  89. struct rb_node rd_node; /* Link with superblock */
  90. struct gfs2_glock *rd_gl; /* Glock for this rgrp */
  91. u64 rd_addr; /* grp block disk address */
  92. u64 rd_data0; /* first data location */
  93. u32 rd_length; /* length of rgrp header in fs blocks */
  94. u32 rd_data; /* num of data blocks in rgrp */
  95. u32 rd_bitbytes; /* number of bytes in data bitmaps */
  96. u32 rd_free;
  97. u32 rd_reserved; /* number of blocks reserved */
  98. u32 rd_free_clone;
  99. u32 rd_dinodes;
  100. u64 rd_igeneration;
  101. struct gfs2_bitmap *rd_bits;
  102. struct gfs2_sbd *rd_sbd;
  103. struct gfs2_rgrp_lvb *rd_rgl;
  104. u32 rd_last_alloc;
  105. u32 rd_flags;
  106. u32 rd_extfail_pt; /* extent failure point */
  107. #define GFS2_RDF_CHECK 0x10000000 /* check for unlinked inodes */
  108. #define GFS2_RDF_UPTODATE 0x20000000 /* rg is up to date */
  109. #define GFS2_RDF_ERROR 0x40000000 /* error in rg */
  110. #define GFS2_RDF_PREFERRED 0x80000000 /* This rgrp is preferred */
  111. #define GFS2_RDF_MASK 0xf0000000 /* mask for internal flags */
  112. spinlock_t rd_rsspin; /* protects reservation related vars */
  113. struct rb_root rd_rstree; /* multi-block reservation tree */
  114. };
  115. struct gfs2_rbm {
  116. struct gfs2_rgrpd *rgd;
  117. u32 offset; /* The offset is bitmap relative */
  118. int bii; /* Bitmap index */
  119. };
  120. static inline struct gfs2_bitmap *rbm_bi(const struct gfs2_rbm *rbm)
  121. {
  122. return rbm->rgd->rd_bits + rbm->bii;
  123. }
  124. static inline u64 gfs2_rbm_to_block(const struct gfs2_rbm *rbm)
  125. {
  126. BUG_ON(rbm->offset >= rbm->rgd->rd_data);
  127. return rbm->rgd->rd_data0 + (rbm_bi(rbm)->bi_start * GFS2_NBBY) +
  128. rbm->offset;
  129. }
  130. static inline bool gfs2_rbm_eq(const struct gfs2_rbm *rbm1,
  131. const struct gfs2_rbm *rbm2)
  132. {
  133. return (rbm1->rgd == rbm2->rgd) && (rbm1->bii == rbm2->bii) &&
  134. (rbm1->offset == rbm2->offset);
  135. }
  136. enum gfs2_state_bits {
  137. BH_Pinned = BH_PrivateStart,
  138. BH_Escaped = BH_PrivateStart + 1,
  139. };
  140. BUFFER_FNS(Pinned, pinned)
  141. TAS_BUFFER_FNS(Pinned, pinned)
  142. BUFFER_FNS(Escaped, escaped)
  143. TAS_BUFFER_FNS(Escaped, escaped)
  144. struct gfs2_bufdata {
  145. struct buffer_head *bd_bh;
  146. struct gfs2_glock *bd_gl;
  147. u64 bd_blkno;
  148. struct list_head bd_list;
  149. struct gfs2_trans *bd_tr;
  150. struct list_head bd_ail_st_list;
  151. struct list_head bd_ail_gl_list;
  152. };
  153. /*
  154. * Internally, we prefix things with gdlm_ and GDLM_ (for gfs-dlm) since a
  155. * prefix of lock_dlm_ gets awkward.
  156. */
  157. #define GDLM_STRNAME_BYTES 25
  158. #define GDLM_LVB_SIZE 32
  159. /*
  160. * ls_recover_flags:
  161. *
  162. * DFL_BLOCK_LOCKS: dlm is in recovery and will grant locks that had been
  163. * held by failed nodes whose journals need recovery. Those locks should
  164. * only be used for journal recovery until the journal recovery is done.
  165. * This is set by the dlm recover_prep callback and cleared by the
  166. * gfs2_control thread when journal recovery is complete. To avoid
  167. * races between recover_prep setting and gfs2_control clearing, recover_spin
  168. * is held while changing this bit and reading/writing recover_block
  169. * and recover_start.
  170. *
  171. * DFL_NO_DLM_OPS: dlm lockspace ops/callbacks are not being used.
  172. *
  173. * DFL_FIRST_MOUNT: this node is the first to mount this fs and is doing
  174. * recovery of all journals before allowing other nodes to mount the fs.
  175. * This is cleared when FIRST_MOUNT_DONE is set.
  176. *
  177. * DFL_FIRST_MOUNT_DONE: this node was the first mounter, and has finished
  178. * recovery of all journals, and now allows other nodes to mount the fs.
  179. *
  180. * DFL_MOUNT_DONE: gdlm_mount has completed successfully and cleared
  181. * BLOCK_LOCKS for the first time. The gfs2_control thread should now
  182. * control clearing BLOCK_LOCKS for further recoveries.
  183. *
  184. * DFL_UNMOUNT: gdlm_unmount sets to keep sdp off gfs2_control_wq.
  185. *
  186. * DFL_DLM_RECOVERY: set while dlm is in recovery, between recover_prep()
  187. * and recover_done(), i.e. set while recover_block == recover_start.
  188. */
  189. enum {
  190. DFL_BLOCK_LOCKS = 0,
  191. DFL_NO_DLM_OPS = 1,
  192. DFL_FIRST_MOUNT = 2,
  193. DFL_FIRST_MOUNT_DONE = 3,
  194. DFL_MOUNT_DONE = 4,
  195. DFL_UNMOUNT = 5,
  196. DFL_DLM_RECOVERY = 6,
  197. };
  198. /*
  199. * We are using struct lm_lockname as an rhashtable key. Avoid holes within
  200. * the struct; padding at the end is fine.
  201. */
  202. struct lm_lockname {
  203. u64 ln_number;
  204. struct gfs2_sbd *ln_sbd;
  205. unsigned int ln_type;
  206. };
  207. #define lm_name_equal(name1, name2) \
  208. (((name1)->ln_number == (name2)->ln_number) && \
  209. ((name1)->ln_type == (name2)->ln_type) && \
  210. ((name1)->ln_sbd == (name2)->ln_sbd))
  211. struct gfs2_glock_operations {
  212. int (*go_sync) (struct gfs2_glock *gl);
  213. int (*go_xmote_bh) (struct gfs2_glock *gl, struct gfs2_holder *gh);
  214. void (*go_inval) (struct gfs2_glock *gl, int flags);
  215. int (*go_demote_ok) (const struct gfs2_glock *gl);
  216. int (*go_lock) (struct gfs2_holder *gh);
  217. void (*go_dump)(struct seq_file *seq, struct gfs2_glock *gl,
  218. const char *fs_id_buf);
  219. void (*go_callback)(struct gfs2_glock *gl, bool remote);
  220. void (*go_free)(struct gfs2_glock *gl);
  221. const int go_subclass;
  222. const int go_type;
  223. const unsigned long go_flags;
  224. #define GLOF_ASPACE 1 /* address space attached */
  225. #define GLOF_LVB 2 /* Lock Value Block attached */
  226. #define GLOF_LRU 4 /* LRU managed */
  227. #define GLOF_NONDISK 8 /* not I/O related */
  228. };
  229. enum {
  230. GFS2_LKS_SRTT = 0, /* Non blocking smoothed round trip time */
  231. GFS2_LKS_SRTTVAR = 1, /* Non blocking smoothed variance */
  232. GFS2_LKS_SRTTB = 2, /* Blocking smoothed round trip time */
  233. GFS2_LKS_SRTTVARB = 3, /* Blocking smoothed variance */
  234. GFS2_LKS_SIRT = 4, /* Smoothed Inter-request time */
  235. GFS2_LKS_SIRTVAR = 5, /* Smoothed Inter-request variance */
  236. GFS2_LKS_DCOUNT = 6, /* Count of dlm requests */
  237. GFS2_LKS_QCOUNT = 7, /* Count of gfs2_holder queues */
  238. GFS2_NR_LKSTATS
  239. };
  240. struct gfs2_lkstats {
  241. u64 stats[GFS2_NR_LKSTATS];
  242. };
  243. enum {
  244. /* States */
  245. HIF_HOLDER = 6, /* Set for gh that "holds" the glock */
  246. HIF_FIRST = 7,
  247. HIF_WAIT = 10,
  248. };
  249. struct gfs2_holder {
  250. struct list_head gh_list;
  251. struct gfs2_glock *gh_gl;
  252. struct pid *gh_owner_pid;
  253. u16 gh_flags;
  254. u16 gh_state;
  255. int gh_error;
  256. unsigned long gh_iflags; /* HIF_... */
  257. unsigned long gh_ip;
  258. };
  259. /* Number of quota types we support */
  260. #define GFS2_MAXQUOTAS 2
  261. struct gfs2_qadata { /* quota allocation data */
  262. /* Quota stuff */
  263. struct gfs2_quota_data *qa_qd[2 * GFS2_MAXQUOTAS];
  264. struct gfs2_holder qa_qd_ghs[2 * GFS2_MAXQUOTAS];
  265. unsigned int qa_qd_num;
  266. int qa_ref;
  267. };
  268. /* Resource group multi-block reservation, in order of appearance:
  269. Step 1. Function prepares to write, allocates a mb, sets the size hint.
  270. Step 2. User calls inplace_reserve to target an rgrp, sets the rgrp info
  271. Step 3. Function get_local_rgrp locks the rgrp, determines which bits to use
  272. Step 4. Bits are assigned from the rgrp based on either the reservation
  273. or wherever it can.
  274. */
  275. struct gfs2_blkreserv {
  276. struct rb_node rs_node; /* link to other block reservations */
  277. struct gfs2_rbm rs_rbm; /* Start of reservation */
  278. u32 rs_free; /* how many blocks are still free */
  279. };
  280. /*
  281. * Allocation parameters
  282. * @target: The number of blocks we'd ideally like to allocate
  283. * @aflags: The flags (e.g. Orlov flag)
  284. *
  285. * The intent is to gradually expand this structure over time in
  286. * order to give more information, e.g. alignment, min extent size
  287. * to the allocation code.
  288. */
  289. struct gfs2_alloc_parms {
  290. u64 target;
  291. u32 min_target;
  292. u32 aflags;
  293. u64 allowed;
  294. };
  295. enum {
  296. GLF_LOCK = 1,
  297. GLF_DEMOTE = 3,
  298. GLF_PENDING_DEMOTE = 4,
  299. GLF_DEMOTE_IN_PROGRESS = 5,
  300. GLF_DIRTY = 6,
  301. GLF_LFLUSH = 7,
  302. GLF_INVALIDATE_IN_PROGRESS = 8,
  303. GLF_REPLY_PENDING = 9,
  304. GLF_INITIAL = 10,
  305. GLF_FROZEN = 11,
  306. GLF_LRU = 13,
  307. GLF_OBJECT = 14, /* Used only for tracing */
  308. GLF_BLOCKING = 15,
  309. GLF_INODE_CREATING = 16, /* Inode creation occurring */
  310. GLF_PENDING_DELETE = 17,
  311. GLF_FREEING = 18, /* Wait for glock to be freed */
  312. };
  313. struct gfs2_glock {
  314. unsigned long gl_flags; /* GLF_... */
  315. struct lm_lockname gl_name;
  316. struct lockref gl_lockref;
  317. /* State fields protected by gl_lockref.lock */
  318. unsigned int gl_state:2, /* Current state */
  319. gl_target:2, /* Target state */
  320. gl_demote_state:2, /* State requested by remote node */
  321. gl_req:2, /* State in last dlm request */
  322. gl_reply:8; /* Last reply from the dlm */
  323. unsigned long gl_demote_time; /* time of first demote request */
  324. long gl_hold_time;
  325. struct list_head gl_holders;
  326. const struct gfs2_glock_operations *gl_ops;
  327. ktime_t gl_dstamp;
  328. struct gfs2_lkstats gl_stats;
  329. struct dlm_lksb gl_lksb;
  330. unsigned long gl_tchange;
  331. void *gl_object;
  332. struct list_head gl_lru;
  333. struct list_head gl_ail_list;
  334. atomic_t gl_ail_count;
  335. atomic_t gl_revokes;
  336. struct delayed_work gl_work;
  337. /* For iopen glocks only */
  338. struct {
  339. struct delayed_work gl_delete;
  340. u64 gl_no_formal_ino;
  341. };
  342. struct rcu_head gl_rcu;
  343. struct rhash_head gl_node;
  344. };
  345. enum {
  346. GIF_INVALID = 0,
  347. GIF_QD_LOCKED = 1,
  348. GIF_ALLOC_FAILED = 2,
  349. GIF_SW_PAGED = 3,
  350. GIF_FREE_VFS_INODE = 5,
  351. GIF_GLOP_PENDING = 6,
  352. GIF_DEFERRED_DELETE = 7,
  353. };
  354. struct gfs2_inode {
  355. struct inode i_inode;
  356. u64 i_no_addr;
  357. u64 i_no_formal_ino;
  358. u64 i_generation;
  359. u64 i_eattr;
  360. unsigned long i_flags; /* GIF_... */
  361. struct gfs2_glock *i_gl; /* Move into i_gh? */
  362. struct gfs2_holder i_iopen_gh;
  363. struct gfs2_holder i_gh; /* for prepare/commit_write only */
  364. struct gfs2_qadata *i_qadata; /* quota allocation data */
  365. struct gfs2_holder i_rgd_gh;
  366. struct gfs2_blkreserv i_res; /* rgrp multi-block reservation */
  367. u64 i_goal; /* goal block for allocations */
  368. atomic_t i_sizehint; /* hint of the write size */
  369. struct rw_semaphore i_rw_mutex;
  370. struct list_head i_ordered;
  371. struct list_head i_trunc_list;
  372. __be64 *i_hash_cache;
  373. u32 i_entries;
  374. u32 i_diskflags;
  375. u8 i_height;
  376. u8 i_depth;
  377. u16 i_rahead;
  378. };
  379. /*
  380. * Since i_inode is the first element of struct gfs2_inode,
  381. * this is effectively a cast.
  382. */
  383. static inline struct gfs2_inode *GFS2_I(struct inode *inode)
  384. {
  385. return container_of(inode, struct gfs2_inode, i_inode);
  386. }
  387. static inline struct gfs2_sbd *GFS2_SB(const struct inode *inode)
  388. {
  389. return inode->i_sb->s_fs_info;
  390. }
  391. struct gfs2_file {
  392. struct mutex f_fl_mutex;
  393. struct gfs2_holder f_fl_gh;
  394. };
  395. struct gfs2_revoke_replay {
  396. struct list_head rr_list;
  397. u64 rr_blkno;
  398. unsigned int rr_where;
  399. };
  400. enum {
  401. QDF_CHANGE = 1,
  402. QDF_LOCKED = 2,
  403. QDF_REFRESH = 3,
  404. QDF_QMSG_QUIET = 4,
  405. };
  406. struct gfs2_quota_data {
  407. struct hlist_bl_node qd_hlist;
  408. struct list_head qd_list;
  409. struct kqid qd_id;
  410. struct gfs2_sbd *qd_sbd;
  411. struct lockref qd_lockref;
  412. struct list_head qd_lru;
  413. unsigned qd_hash;
  414. unsigned long qd_flags; /* QDF_... */
  415. s64 qd_change;
  416. s64 qd_change_sync;
  417. unsigned int qd_slot;
  418. unsigned int qd_slot_count;
  419. struct buffer_head *qd_bh;
  420. struct gfs2_quota_change *qd_bh_qc;
  421. unsigned int qd_bh_count;
  422. struct gfs2_glock *qd_gl;
  423. struct gfs2_quota_lvb qd_qb;
  424. u64 qd_sync_gen;
  425. unsigned long qd_last_warn;
  426. struct rcu_head qd_rcu;
  427. };
  428. enum {
  429. TR_TOUCHED = 1,
  430. TR_ATTACHED = 2,
  431. TR_ALLOCED = 3,
  432. };
  433. struct gfs2_trans {
  434. unsigned long tr_ip;
  435. unsigned int tr_blocks;
  436. unsigned int tr_revokes;
  437. unsigned int tr_reserved;
  438. unsigned long tr_flags;
  439. unsigned int tr_num_buf_new;
  440. unsigned int tr_num_databuf_new;
  441. unsigned int tr_num_buf_rm;
  442. unsigned int tr_num_databuf_rm;
  443. unsigned int tr_num_revoke;
  444. unsigned int tr_num_revoke_rm;
  445. struct list_head tr_list;
  446. struct list_head tr_databuf;
  447. struct list_head tr_buf;
  448. unsigned int tr_first;
  449. struct list_head tr_ail1_list;
  450. struct list_head tr_ail2_list;
  451. };
  452. struct gfs2_journal_extent {
  453. struct list_head list;
  454. unsigned int lblock; /* First logical block */
  455. u64 dblock; /* First disk block */
  456. u64 blocks;
  457. };
  458. struct gfs2_jdesc {
  459. struct list_head jd_list;
  460. struct list_head extent_list;
  461. unsigned int nr_extents;
  462. struct work_struct jd_work;
  463. struct inode *jd_inode;
  464. unsigned long jd_flags;
  465. #define JDF_RECOVERY 1
  466. unsigned int jd_jid;
  467. u32 jd_blocks;
  468. int jd_recover_error;
  469. /* Replay stuff */
  470. unsigned int jd_found_blocks;
  471. unsigned int jd_found_revokes;
  472. unsigned int jd_replayed_blocks;
  473. struct list_head jd_revoke_list;
  474. unsigned int jd_replay_tail;
  475. u64 jd_no_addr;
  476. };
  477. struct gfs2_statfs_change_host {
  478. s64 sc_total;
  479. s64 sc_free;
  480. s64 sc_dinodes;
  481. };
  482. #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF
  483. #define GFS2_QUOTA_OFF 0
  484. #define GFS2_QUOTA_ACCOUNT 1
  485. #define GFS2_QUOTA_ON 2
  486. #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED
  487. #define GFS2_DATA_WRITEBACK 1
  488. #define GFS2_DATA_ORDERED 2
  489. #define GFS2_ERRORS_DEFAULT GFS2_ERRORS_WITHDRAW
  490. #define GFS2_ERRORS_WITHDRAW 0
  491. #define GFS2_ERRORS_CONTINUE 1 /* place holder for future feature */
  492. #define GFS2_ERRORS_RO 2 /* place holder for future feature */
  493. #define GFS2_ERRORS_PANIC 3
  494. struct gfs2_args {
  495. char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */
  496. char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */
  497. char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */
  498. unsigned int ar_spectator:1; /* Don't get a journal */
  499. unsigned int ar_localflocks:1; /* Let the VFS do flock|fcntl */
  500. unsigned int ar_debug:1; /* Oops on errors */
  501. unsigned int ar_posix_acl:1; /* Enable posix acls */
  502. unsigned int ar_quota:2; /* off/account/on */
  503. unsigned int ar_suiddir:1; /* suiddir support */
  504. unsigned int ar_data:2; /* ordered/writeback */
  505. unsigned int ar_meta:1; /* mount metafs */
  506. unsigned int ar_discard:1; /* discard requests */
  507. unsigned int ar_errors:2; /* errors=withdraw | panic */
  508. unsigned int ar_nobarrier:1; /* do not send barriers */
  509. unsigned int ar_rgrplvb:1; /* use lvbs for rgrp info */
  510. unsigned int ar_loccookie:1; /* use location based readdir
  511. cookies */
  512. s32 ar_commit; /* Commit interval */
  513. s32 ar_statfs_quantum; /* The fast statfs interval */
  514. s32 ar_quota_quantum; /* The quota interval */
  515. s32 ar_statfs_percent; /* The % change to force sync */
  516. };
  517. struct gfs2_tune {
  518. spinlock_t gt_spin;
  519. unsigned int gt_logd_secs;
  520. unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */
  521. unsigned int gt_quota_scale_num; /* Numerator */
  522. unsigned int gt_quota_scale_den; /* Denominator */
  523. unsigned int gt_quota_quantum; /* Secs between syncs to quota file */
  524. unsigned int gt_new_files_jdata;
  525. unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */
  526. unsigned int gt_complain_secs;
  527. unsigned int gt_statfs_quantum;
  528. unsigned int gt_statfs_slow;
  529. };
  530. enum {
  531. SDF_JOURNAL_CHECKED = 0,
  532. SDF_JOURNAL_LIVE = 1,
  533. SDF_WITHDRAWN = 2,
  534. SDF_NOBARRIERS = 3,
  535. SDF_NORECOVERY = 4,
  536. SDF_DEMOTE = 5,
  537. SDF_NOJOURNALID = 6,
  538. SDF_RORECOVERY = 7, /* read only recovery */
  539. SDF_SKIP_DLM_UNLOCK = 8,
  540. SDF_FORCE_AIL_FLUSH = 9,
  541. SDF_FS_FROZEN = 10,
  542. SDF_WITHDRAWING = 11, /* Will withdraw eventually */
  543. SDF_WITHDRAW_IN_PROG = 12, /* Withdraw is in progress */
  544. SDF_REMOTE_WITHDRAW = 13, /* Performing remote recovery */
  545. SDF_WITHDRAW_RECOVERY = 14, /* Wait for journal recovery when we are
  546. withdrawing */
  547. };
  548. enum gfs2_freeze_state {
  549. SFS_UNFROZEN = 0,
  550. SFS_STARTING_FREEZE = 1,
  551. SFS_FROZEN = 2,
  552. };
  553. #define GFS2_FSNAME_LEN 256
  554. struct gfs2_inum_host {
  555. u64 no_formal_ino;
  556. u64 no_addr;
  557. };
  558. struct gfs2_sb_host {
  559. u32 sb_magic;
  560. u32 sb_type;
  561. u32 sb_format;
  562. u32 sb_fs_format;
  563. u32 sb_multihost_format;
  564. u32 sb_bsize;
  565. u32 sb_bsize_shift;
  566. struct gfs2_inum_host sb_master_dir;
  567. struct gfs2_inum_host sb_root_dir;
  568. char sb_lockproto[GFS2_LOCKNAME_LEN];
  569. char sb_locktable[GFS2_LOCKNAME_LEN];
  570. };
  571. /*
  572. * lm_mount() return values
  573. *
  574. * ls_jid - the journal ID this node should use
  575. * ls_first - this node is the first to mount the file system
  576. * ls_lockspace - lock module's context for this file system
  577. * ls_ops - lock module's functions
  578. */
  579. struct lm_lockstruct {
  580. int ls_jid;
  581. unsigned int ls_first;
  582. const struct lm_lockops *ls_ops;
  583. dlm_lockspace_t *ls_dlm;
  584. int ls_recover_jid_done; /* These two are deprecated, */
  585. int ls_recover_jid_status; /* used previously by gfs_controld */
  586. struct dlm_lksb ls_mounted_lksb; /* mounted_lock */
  587. struct dlm_lksb ls_control_lksb; /* control_lock */
  588. char ls_control_lvb[GDLM_LVB_SIZE]; /* control_lock lvb */
  589. struct completion ls_sync_wait; /* {control,mounted}_{lock,unlock} */
  590. char *ls_lvb_bits;
  591. spinlock_t ls_recover_spin; /* protects following fields */
  592. unsigned long ls_recover_flags; /* DFL_ */
  593. uint32_t ls_recover_mount; /* gen in first recover_done cb */
  594. uint32_t ls_recover_start; /* gen in last recover_done cb */
  595. uint32_t ls_recover_block; /* copy recover_start in last recover_prep */
  596. uint32_t ls_recover_size; /* size of recover_submit, recover_result */
  597. uint32_t *ls_recover_submit; /* gen in last recover_slot cb per jid */
  598. uint32_t *ls_recover_result; /* result of last jid recovery */
  599. };
  600. struct gfs2_pcpu_lkstats {
  601. /* One struct for each glock type */
  602. struct gfs2_lkstats lkstats[10];
  603. };
  604. /* List of local (per node) statfs inodes */
  605. struct local_statfs_inode {
  606. struct list_head si_list;
  607. struct inode *si_sc_inode;
  608. unsigned int si_jid; /* journal id this statfs inode corresponds to */
  609. };
  610. struct gfs2_sbd {
  611. struct super_block *sd_vfs;
  612. struct gfs2_pcpu_lkstats __percpu *sd_lkstats;
  613. struct kobject sd_kobj;
  614. struct completion sd_kobj_unregister;
  615. unsigned long sd_flags; /* SDF_... */
  616. struct gfs2_sb_host sd_sb;
  617. /* Constants computed on mount */
  618. u32 sd_fsb2bb;
  619. u32 sd_fsb2bb_shift;
  620. u32 sd_diptrs; /* Number of pointers in a dinode */
  621. u32 sd_inptrs; /* Number of pointers in a indirect block */
  622. u32 sd_ldptrs; /* Number of pointers in a log descriptor block */
  623. u32 sd_jbsize; /* Size of a journaled data block */
  624. u32 sd_hash_bsize; /* sizeof(exhash block) */
  625. u32 sd_hash_bsize_shift;
  626. u32 sd_hash_ptrs; /* Number of pointers in a hash block */
  627. u32 sd_qc_per_block;
  628. u32 sd_blocks_per_bitmap;
  629. u32 sd_max_dirres; /* Max blocks needed to add a directory entry */
  630. u32 sd_max_height; /* Max height of a file's metadata tree */
  631. u64 sd_heightsize[GFS2_MAX_META_HEIGHT + 1];
  632. u32 sd_max_dents_per_leaf; /* Max number of dirents in a leaf block */
  633. struct gfs2_args sd_args; /* Mount arguments */
  634. struct gfs2_tune sd_tune; /* Filesystem tuning structure */
  635. /* Lock Stuff */
  636. struct lm_lockstruct sd_lockstruct;
  637. struct gfs2_holder sd_live_gh;
  638. struct gfs2_glock *sd_rename_gl;
  639. struct gfs2_glock *sd_freeze_gl;
  640. struct work_struct sd_freeze_work;
  641. wait_queue_head_t sd_glock_wait;
  642. wait_queue_head_t sd_async_glock_wait;
  643. atomic_t sd_glock_disposal;
  644. struct completion sd_locking_init;
  645. struct completion sd_wdack;
  646. struct delayed_work sd_control_work;
  647. /* Inode Stuff */
  648. struct dentry *sd_master_dir;
  649. struct dentry *sd_root_dir;
  650. struct inode *sd_jindex;
  651. struct inode *sd_statfs_inode;
  652. struct inode *sd_sc_inode;
  653. struct list_head sd_sc_inodes_list;
  654. struct inode *sd_qc_inode;
  655. struct inode *sd_rindex;
  656. struct inode *sd_quota_inode;
  657. /* StatFS stuff */
  658. spinlock_t sd_statfs_spin;
  659. struct gfs2_statfs_change_host sd_statfs_master;
  660. struct gfs2_statfs_change_host sd_statfs_local;
  661. int sd_statfs_force_sync;
  662. /* Resource group stuff */
  663. int sd_rindex_uptodate;
  664. spinlock_t sd_rindex_spin;
  665. struct rb_root sd_rindex_tree;
  666. unsigned int sd_rgrps;
  667. unsigned int sd_max_rg_data;
  668. /* Journal index stuff */
  669. struct list_head sd_jindex_list;
  670. spinlock_t sd_jindex_spin;
  671. struct mutex sd_jindex_mutex;
  672. unsigned int sd_journals;
  673. struct gfs2_jdesc *sd_jdesc;
  674. struct gfs2_holder sd_journal_gh;
  675. struct gfs2_holder sd_jinode_gh;
  676. struct gfs2_glock *sd_jinode_gl;
  677. struct gfs2_holder sd_sc_gh;
  678. struct gfs2_holder sd_qc_gh;
  679. struct completion sd_journal_ready;
  680. /* Daemon stuff */
  681. struct task_struct *sd_logd_process;
  682. struct task_struct *sd_quotad_process;
  683. /* Quota stuff */
  684. struct list_head sd_quota_list;
  685. atomic_t sd_quota_count;
  686. struct mutex sd_quota_mutex;
  687. struct mutex sd_quota_sync_mutex;
  688. wait_queue_head_t sd_quota_wait;
  689. struct list_head sd_trunc_list;
  690. spinlock_t sd_trunc_lock;
  691. unsigned int sd_quota_slots;
  692. unsigned long *sd_quota_bitmap;
  693. spinlock_t sd_bitmap_lock;
  694. u64 sd_quota_sync_gen;
  695. /* Log stuff */
  696. struct address_space sd_aspace;
  697. spinlock_t sd_log_lock;
  698. struct gfs2_trans *sd_log_tr;
  699. unsigned int sd_log_blks_reserved;
  700. int sd_log_committed_revoke;
  701. atomic_t sd_log_pinned;
  702. unsigned int sd_log_num_revoke;
  703. struct list_head sd_log_revokes;
  704. struct list_head sd_log_ordered;
  705. spinlock_t sd_ordered_lock;
  706. atomic_t sd_log_thresh1;
  707. atomic_t sd_log_thresh2;
  708. atomic_t sd_log_blks_free;
  709. atomic_t sd_log_blks_needed;
  710. wait_queue_head_t sd_log_waitq;
  711. wait_queue_head_t sd_logd_waitq;
  712. u64 sd_log_sequence;
  713. unsigned int sd_log_head;
  714. unsigned int sd_log_tail;
  715. int sd_log_idle;
  716. struct rw_semaphore sd_log_flush_lock;
  717. atomic_t sd_log_in_flight;
  718. struct bio *sd_log_bio;
  719. wait_queue_head_t sd_log_flush_wait;
  720. int sd_log_error; /* First log error */
  721. wait_queue_head_t sd_withdraw_wait;
  722. atomic_t sd_reserving_log;
  723. wait_queue_head_t sd_reserving_log_wait;
  724. unsigned int sd_log_flush_head;
  725. spinlock_t sd_ail_lock;
  726. struct list_head sd_ail1_list;
  727. struct list_head sd_ail2_list;
  728. /* For quiescing the filesystem */
  729. struct gfs2_holder sd_freeze_gh;
  730. atomic_t sd_freeze_state;
  731. struct mutex sd_freeze_mutex;
  732. char sd_fsname[GFS2_FSNAME_LEN + 3 * sizeof(int) + 2];
  733. char sd_table_name[GFS2_FSNAME_LEN];
  734. char sd_proto_name[GFS2_FSNAME_LEN];
  735. /* Debugging crud */
  736. unsigned long sd_last_warning;
  737. struct dentry *debugfs_dir; /* debugfs directory */
  738. unsigned long sd_glock_dqs_held;
  739. };
  740. static inline void gfs2_glstats_inc(struct gfs2_glock *gl, int which)
  741. {
  742. gl->gl_stats.stats[which]++;
  743. }
  744. static inline void gfs2_sbstats_inc(const struct gfs2_glock *gl, int which)
  745. {
  746. const struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
  747. preempt_disable();
  748. this_cpu_ptr(sdp->sd_lkstats)->lkstats[gl->gl_name.ln_type].stats[which]++;
  749. preempt_enable();
  750. }
  751. extern struct gfs2_rgrpd *gfs2_glock2rgrp(struct gfs2_glock *gl);
  752. static inline unsigned gfs2_max_stuffed_size(const struct gfs2_inode *ip)
  753. {
  754. return GFS2_SB(&ip->i_inode)->sd_sb.sb_bsize - sizeof(struct gfs2_dinode);
  755. }
  756. #endif /* __INCORE_DOT_H__ */