xfs_mount.h 24 KB

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  1. /*
  2. * Copyright (c) 2000-2005 Silicon Graphics, Inc.
  3. * All Rights Reserved.
  4. *
  5. * This program is free software; you can redistribute it and/or
  6. * modify it under the terms of the GNU General Public License as
  7. * published by the Free Software Foundation.
  8. *
  9. * This program is distributed in the hope that it would be useful,
  10. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  12. * GNU General Public License for more details.
  13. *
  14. * You should have received a copy of the GNU General Public License
  15. * along with this program; if not, write the Free Software Foundation,
  16. * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  17. */
  18. #ifndef __XFS_MOUNT_H__
  19. #define __XFS_MOUNT_H__
  20. typedef struct xfs_trans_reservations {
  21. uint tr_write; /* extent alloc trans */
  22. uint tr_itruncate; /* truncate trans */
  23. uint tr_rename; /* rename trans */
  24. uint tr_link; /* link trans */
  25. uint tr_remove; /* unlink trans */
  26. uint tr_symlink; /* symlink trans */
  27. uint tr_create; /* create trans */
  28. uint tr_mkdir; /* mkdir trans */
  29. uint tr_ifree; /* inode free trans */
  30. uint tr_ichange; /* inode update trans */
  31. uint tr_growdata; /* fs data section grow trans */
  32. uint tr_swrite; /* sync write inode trans */
  33. uint tr_addafork; /* cvt inode to attributed trans */
  34. uint tr_writeid; /* write setuid/setgid file */
  35. uint tr_attrinval; /* attr fork buffer invalidation */
  36. uint tr_attrset; /* set/create an attribute */
  37. uint tr_attrrm; /* remove an attribute */
  38. uint tr_clearagi; /* clear bad agi unlinked ino bucket */
  39. uint tr_growrtalloc; /* grow realtime allocations */
  40. uint tr_growrtzero; /* grow realtime zeroing */
  41. uint tr_growrtfree; /* grow realtime freeing */
  42. } xfs_trans_reservations_t;
  43. #ifndef __KERNEL__
  44. /*
  45. * Moved here from xfs_ag.h to avoid reordering header files
  46. */
  47. #define XFS_DADDR_TO_AGNO(mp,d) \
  48. ((xfs_agnumber_t)(XFS_BB_TO_FSBT(mp, d) / (mp)->m_sb.sb_agblocks))
  49. #define XFS_DADDR_TO_AGBNO(mp,d) \
  50. ((xfs_agblock_t)(XFS_BB_TO_FSBT(mp, d) % (mp)->m_sb.sb_agblocks))
  51. #else
  52. struct cred;
  53. struct log;
  54. struct bhv_vfs;
  55. struct bhv_vnode;
  56. struct xfs_mount_args;
  57. struct xfs_ihash;
  58. struct xfs_chash;
  59. struct xfs_inode;
  60. struct xfs_perag;
  61. struct xfs_iocore;
  62. struct xfs_bmbt_irec;
  63. struct xfs_bmap_free;
  64. struct xfs_extdelta;
  65. struct xfs_swapext;
  66. extern struct bhv_vfsops xfs_vfsops;
  67. extern struct bhv_vnodeops xfs_vnodeops;
  68. #define AIL_LOCK_T lock_t
  69. #define AIL_LOCKINIT(x,y) spinlock_init(x,y)
  70. #define AIL_LOCK_DESTROY(x) spinlock_destroy(x)
  71. #define AIL_LOCK(mp,s) s=mutex_spinlock(&(mp)->m_ail_lock)
  72. #define AIL_UNLOCK(mp,s) mutex_spinunlock(&(mp)->m_ail_lock, s)
  73. /*
  74. * Prototypes and functions for the Data Migration subsystem.
  75. */
  76. typedef int (*xfs_send_data_t)(int, struct bhv_vnode *,
  77. xfs_off_t, size_t, int, bhv_vrwlock_t *);
  78. typedef int (*xfs_send_mmap_t)(struct vm_area_struct *, uint);
  79. typedef int (*xfs_send_destroy_t)(struct bhv_vnode *, dm_right_t);
  80. typedef int (*xfs_send_namesp_t)(dm_eventtype_t, struct bhv_vfs *,
  81. struct bhv_vnode *,
  82. dm_right_t, struct bhv_vnode *, dm_right_t,
  83. char *, char *, mode_t, int, int);
  84. typedef void (*xfs_send_unmount_t)(struct bhv_vfs *, struct bhv_vnode *,
  85. dm_right_t, mode_t, int, int);
  86. typedef struct xfs_dmops {
  87. xfs_send_data_t xfs_send_data;
  88. xfs_send_mmap_t xfs_send_mmap;
  89. xfs_send_destroy_t xfs_send_destroy;
  90. xfs_send_namesp_t xfs_send_namesp;
  91. xfs_send_unmount_t xfs_send_unmount;
  92. } xfs_dmops_t;
  93. #define XFS_SEND_DATA(mp, ev,vp,off,len,fl,lock) \
  94. (*(mp)->m_dm_ops.xfs_send_data)(ev,vp,off,len,fl,lock)
  95. #define XFS_SEND_MMAP(mp, vma,fl) \
  96. (*(mp)->m_dm_ops.xfs_send_mmap)(vma,fl)
  97. #define XFS_SEND_DESTROY(mp, vp,right) \
  98. (*(mp)->m_dm_ops.xfs_send_destroy)(vp,right)
  99. #define XFS_SEND_NAMESP(mp, ev,b1,r1,b2,r2,n1,n2,mode,rval,fl) \
  100. (*(mp)->m_dm_ops.xfs_send_namesp)(ev,NULL,b1,r1,b2,r2,n1,n2,mode,rval,fl)
  101. #define XFS_SEND_PREUNMOUNT(mp, vfs,b1,r1,b2,r2,n1,n2,mode,rval,fl) \
  102. (*(mp)->m_dm_ops.xfs_send_namesp)(DM_EVENT_PREUNMOUNT,vfs,b1,r1,b2,r2,n1,n2,mode,rval,fl)
  103. #define XFS_SEND_UNMOUNT(mp, vfsp,vp,right,mode,rval,fl) \
  104. (*(mp)->m_dm_ops.xfs_send_unmount)(vfsp,vp,right,mode,rval,fl)
  105. /*
  106. * Prototypes and functions for the Quota Management subsystem.
  107. */
  108. struct xfs_dquot;
  109. struct xfs_dqtrxops;
  110. struct xfs_quotainfo;
  111. typedef int (*xfs_qminit_t)(struct xfs_mount *, uint *, uint *);
  112. typedef int (*xfs_qmmount_t)(struct xfs_mount *, uint, uint, int);
  113. typedef int (*xfs_qmunmount_t)(struct xfs_mount *);
  114. typedef void (*xfs_qmdone_t)(struct xfs_mount *);
  115. typedef void (*xfs_dqrele_t)(struct xfs_dquot *);
  116. typedef int (*xfs_dqattach_t)(struct xfs_inode *, uint);
  117. typedef void (*xfs_dqdetach_t)(struct xfs_inode *);
  118. typedef int (*xfs_dqpurgeall_t)(struct xfs_mount *, uint);
  119. typedef int (*xfs_dqvopalloc_t)(struct xfs_mount *,
  120. struct xfs_inode *, uid_t, gid_t, prid_t, uint,
  121. struct xfs_dquot **, struct xfs_dquot **);
  122. typedef void (*xfs_dqvopcreate_t)(struct xfs_trans *, struct xfs_inode *,
  123. struct xfs_dquot *, struct xfs_dquot *);
  124. typedef int (*xfs_dqvoprename_t)(struct xfs_inode **);
  125. typedef struct xfs_dquot * (*xfs_dqvopchown_t)(
  126. struct xfs_trans *, struct xfs_inode *,
  127. struct xfs_dquot **, struct xfs_dquot *);
  128. typedef int (*xfs_dqvopchownresv_t)(struct xfs_trans *, struct xfs_inode *,
  129. struct xfs_dquot *, struct xfs_dquot *, uint);
  130. typedef struct xfs_qmops {
  131. xfs_qminit_t xfs_qminit;
  132. xfs_qmdone_t xfs_qmdone;
  133. xfs_qmmount_t xfs_qmmount;
  134. xfs_qmunmount_t xfs_qmunmount;
  135. xfs_dqrele_t xfs_dqrele;
  136. xfs_dqattach_t xfs_dqattach;
  137. xfs_dqdetach_t xfs_dqdetach;
  138. xfs_dqpurgeall_t xfs_dqpurgeall;
  139. xfs_dqvopalloc_t xfs_dqvopalloc;
  140. xfs_dqvopcreate_t xfs_dqvopcreate;
  141. xfs_dqvoprename_t xfs_dqvoprename;
  142. xfs_dqvopchown_t xfs_dqvopchown;
  143. xfs_dqvopchownresv_t xfs_dqvopchownresv;
  144. struct xfs_dqtrxops *xfs_dqtrxops;
  145. } xfs_qmops_t;
  146. #define XFS_QM_INIT(mp, mnt, fl) \
  147. (*(mp)->m_qm_ops.xfs_qminit)(mp, mnt, fl)
  148. #define XFS_QM_MOUNT(mp, mnt, fl, mfsi_flags) \
  149. (*(mp)->m_qm_ops.xfs_qmmount)(mp, mnt, fl, mfsi_flags)
  150. #define XFS_QM_UNMOUNT(mp) \
  151. (*(mp)->m_qm_ops.xfs_qmunmount)(mp)
  152. #define XFS_QM_DONE(mp) \
  153. (*(mp)->m_qm_ops.xfs_qmdone)(mp)
  154. #define XFS_QM_DQRELE(mp, dq) \
  155. (*(mp)->m_qm_ops.xfs_dqrele)(dq)
  156. #define XFS_QM_DQATTACH(mp, ip, fl) \
  157. (*(mp)->m_qm_ops.xfs_dqattach)(ip, fl)
  158. #define XFS_QM_DQDETACH(mp, ip) \
  159. (*(mp)->m_qm_ops.xfs_dqdetach)(ip)
  160. #define XFS_QM_DQPURGEALL(mp, fl) \
  161. (*(mp)->m_qm_ops.xfs_dqpurgeall)(mp, fl)
  162. #define XFS_QM_DQVOPALLOC(mp, ip, uid, gid, prid, fl, dq1, dq2) \
  163. (*(mp)->m_qm_ops.xfs_dqvopalloc)(mp, ip, uid, gid, prid, fl, dq1, dq2)
  164. #define XFS_QM_DQVOPCREATE(mp, tp, ip, dq1, dq2) \
  165. (*(mp)->m_qm_ops.xfs_dqvopcreate)(tp, ip, dq1, dq2)
  166. #define XFS_QM_DQVOPRENAME(mp, ip) \
  167. (*(mp)->m_qm_ops.xfs_dqvoprename)(ip)
  168. #define XFS_QM_DQVOPCHOWN(mp, tp, ip, dqp, dq) \
  169. (*(mp)->m_qm_ops.xfs_dqvopchown)(tp, ip, dqp, dq)
  170. #define XFS_QM_DQVOPCHOWNRESV(mp, tp, ip, dq1, dq2, fl) \
  171. (*(mp)->m_qm_ops.xfs_dqvopchownresv)(tp, ip, dq1, dq2, fl)
  172. /*
  173. * Prototypes and functions for I/O core modularization.
  174. */
  175. typedef int (*xfs_ioinit_t)(struct bhv_vfs *,
  176. struct xfs_mount_args *, int);
  177. typedef int (*xfs_bmapi_t)(struct xfs_trans *, void *,
  178. xfs_fileoff_t, xfs_filblks_t, int,
  179. xfs_fsblock_t *, xfs_extlen_t,
  180. struct xfs_bmbt_irec *, int *,
  181. struct xfs_bmap_free *, struct xfs_extdelta *);
  182. typedef int (*xfs_bunmapi_t)(struct xfs_trans *,
  183. void *, xfs_fileoff_t,
  184. xfs_filblks_t, int, xfs_extnum_t,
  185. xfs_fsblock_t *, struct xfs_bmap_free *,
  186. struct xfs_extdelta *, int *);
  187. typedef int (*xfs_bmap_eof_t)(void *, xfs_fileoff_t, int, int *);
  188. typedef int (*xfs_iomap_write_direct_t)(
  189. void *, xfs_off_t, size_t, int,
  190. struct xfs_bmbt_irec *, int *, int);
  191. typedef int (*xfs_iomap_write_delay_t)(
  192. void *, xfs_off_t, size_t, int,
  193. struct xfs_bmbt_irec *, int *);
  194. typedef int (*xfs_iomap_write_allocate_t)(
  195. void *, xfs_off_t, size_t,
  196. struct xfs_bmbt_irec *, int *);
  197. typedef int (*xfs_iomap_write_unwritten_t)(
  198. void *, xfs_off_t, size_t);
  199. typedef uint (*xfs_lck_map_shared_t)(void *);
  200. typedef void (*xfs_lock_t)(void *, uint);
  201. typedef void (*xfs_lock_demote_t)(void *, uint);
  202. typedef int (*xfs_lock_nowait_t)(void *, uint);
  203. typedef void (*xfs_unlk_t)(void *, unsigned int);
  204. typedef xfs_fsize_t (*xfs_size_t)(void *);
  205. typedef xfs_fsize_t (*xfs_iodone_t)(struct bhv_vfs *);
  206. typedef int (*xfs_swap_extents_t)(void *, void *,
  207. struct xfs_swapext*);
  208. typedef struct xfs_ioops {
  209. xfs_ioinit_t xfs_ioinit;
  210. xfs_bmapi_t xfs_bmapi_func;
  211. xfs_bunmapi_t xfs_bunmapi_func;
  212. xfs_bmap_eof_t xfs_bmap_eof_func;
  213. xfs_iomap_write_direct_t xfs_iomap_write_direct;
  214. xfs_iomap_write_delay_t xfs_iomap_write_delay;
  215. xfs_iomap_write_allocate_t xfs_iomap_write_allocate;
  216. xfs_iomap_write_unwritten_t xfs_iomap_write_unwritten;
  217. xfs_lock_t xfs_ilock;
  218. xfs_lck_map_shared_t xfs_lck_map_shared;
  219. xfs_lock_demote_t xfs_ilock_demote;
  220. xfs_lock_nowait_t xfs_ilock_nowait;
  221. xfs_unlk_t xfs_unlock;
  222. xfs_size_t xfs_size_func;
  223. xfs_iodone_t xfs_iodone;
  224. xfs_swap_extents_t xfs_swap_extents_func;
  225. } xfs_ioops_t;
  226. #define XFS_IOINIT(vfsp, args, flags) \
  227. (*(mp)->m_io_ops.xfs_ioinit)(vfsp, args, flags)
  228. #define XFS_BMAPI(mp, trans,io,bno,len,f,first,tot,mval,nmap,flist,delta) \
  229. (*(mp)->m_io_ops.xfs_bmapi_func) \
  230. (trans,(io)->io_obj,bno,len,f,first,tot,mval,nmap,flist,delta)
  231. #define XFS_BUNMAPI(mp, trans,io,bno,len,f,nexts,first,flist,delta,done) \
  232. (*(mp)->m_io_ops.xfs_bunmapi_func) \
  233. (trans,(io)->io_obj,bno,len,f,nexts,first,flist,delta,done)
  234. #define XFS_BMAP_EOF(mp, io, endoff, whichfork, eof) \
  235. (*(mp)->m_io_ops.xfs_bmap_eof_func) \
  236. ((io)->io_obj, endoff, whichfork, eof)
  237. #define XFS_IOMAP_WRITE_DIRECT(mp, io, offset, count, flags, mval, nmap, found)\
  238. (*(mp)->m_io_ops.xfs_iomap_write_direct) \
  239. ((io)->io_obj, offset, count, flags, mval, nmap, found)
  240. #define XFS_IOMAP_WRITE_DELAY(mp, io, offset, count, flags, mval, nmap) \
  241. (*(mp)->m_io_ops.xfs_iomap_write_delay) \
  242. ((io)->io_obj, offset, count, flags, mval, nmap)
  243. #define XFS_IOMAP_WRITE_ALLOCATE(mp, io, offset, count, mval, nmap) \
  244. (*(mp)->m_io_ops.xfs_iomap_write_allocate) \
  245. ((io)->io_obj, offset, count, mval, nmap)
  246. #define XFS_IOMAP_WRITE_UNWRITTEN(mp, io, offset, count) \
  247. (*(mp)->m_io_ops.xfs_iomap_write_unwritten) \
  248. ((io)->io_obj, offset, count)
  249. #define XFS_LCK_MAP_SHARED(mp, io) \
  250. (*(mp)->m_io_ops.xfs_lck_map_shared)((io)->io_obj)
  251. #define XFS_ILOCK(mp, io, mode) \
  252. (*(mp)->m_io_ops.xfs_ilock)((io)->io_obj, mode)
  253. #define XFS_ILOCK_NOWAIT(mp, io, mode) \
  254. (*(mp)->m_io_ops.xfs_ilock_nowait)((io)->io_obj, mode)
  255. #define XFS_IUNLOCK(mp, io, mode) \
  256. (*(mp)->m_io_ops.xfs_unlock)((io)->io_obj, mode)
  257. #define XFS_ILOCK_DEMOTE(mp, io, mode) \
  258. (*(mp)->m_io_ops.xfs_ilock_demote)((io)->io_obj, mode)
  259. #define XFS_SIZE(mp, io) \
  260. (*(mp)->m_io_ops.xfs_size_func)((io)->io_obj)
  261. #define XFS_IODONE(vfsp) \
  262. (*(mp)->m_io_ops.xfs_iodone)(vfsp)
  263. #define XFS_SWAP_EXTENTS(mp, io, tio, sxp) \
  264. (*(mp)->m_io_ops.xfs_swap_extents_func) \
  265. ((io)->io_obj, (tio)->io_obj, sxp)
  266. #ifdef HAVE_PERCPU_SB
  267. /*
  268. * Valid per-cpu incore superblock counters. Note that if you add new counters,
  269. * you may need to define new counter disabled bit field descriptors as there
  270. * are more possible fields in the superblock that can fit in a bitfield on a
  271. * 32 bit platform. The XFS_SBS_* values for the current current counters just
  272. * fit.
  273. */
  274. typedef struct xfs_icsb_cnts {
  275. uint64_t icsb_fdblocks;
  276. uint64_t icsb_ifree;
  277. uint64_t icsb_icount;
  278. unsigned long icsb_flags;
  279. } xfs_icsb_cnts_t;
  280. #define XFS_ICSB_FLAG_LOCK (1 << 0) /* counter lock bit */
  281. #define XFS_ICSB_SB_LOCKED (1 << 0) /* sb already locked */
  282. #define XFS_ICSB_LAZY_COUNT (1 << 1) /* accuracy not needed */
  283. extern int xfs_icsb_init_counters(struct xfs_mount *);
  284. extern void xfs_icsb_reinit_counters(struct xfs_mount *);
  285. extern void xfs_icsb_sync_counters_flags(struct xfs_mount *, int);
  286. #else
  287. #define xfs_icsb_init_counters(mp) (0)
  288. #define xfs_icsb_reinit_counters(mp) do { } while (0)
  289. #define xfs_icsb_sync_counters_flags(mp, flags) do { } while (0)
  290. #endif
  291. typedef struct xfs_mount {
  292. bhv_desc_t m_bhv; /* vfs xfs behavior */
  293. xfs_tid_t m_tid; /* next unused tid for fs */
  294. AIL_LOCK_T m_ail_lock; /* fs AIL mutex */
  295. xfs_ail_entry_t m_ail; /* fs active log item list */
  296. uint m_ail_gen; /* fs AIL generation count */
  297. xfs_sb_t m_sb; /* copy of fs superblock */
  298. lock_t m_sb_lock; /* sb counter mutex */
  299. struct xfs_buf *m_sb_bp; /* buffer for superblock */
  300. char *m_fsname; /* filesystem name */
  301. int m_fsname_len; /* strlen of fs name */
  302. char *m_rtname; /* realtime device name */
  303. char *m_logname; /* external log device name */
  304. int m_bsize; /* fs logical block size */
  305. xfs_agnumber_t m_agfrotor; /* last ag where space found */
  306. xfs_agnumber_t m_agirotor; /* last ag dir inode alloced */
  307. lock_t m_agirotor_lock;/* .. and lock protecting it */
  308. xfs_agnumber_t m_maxagi; /* highest inode alloc group */
  309. size_t m_ihsize; /* size of next field */
  310. struct xfs_ihash *m_ihash; /* fs private inode hash table*/
  311. struct xfs_inode *m_inodes; /* active inode list */
  312. struct list_head m_del_inodes; /* inodes to reclaim */
  313. mutex_t m_ilock; /* inode list mutex */
  314. uint m_ireclaims; /* count of calls to reclaim*/
  315. uint m_readio_log; /* min read size log bytes */
  316. uint m_readio_blocks; /* min read size blocks */
  317. uint m_writeio_log; /* min write size log bytes */
  318. uint m_writeio_blocks; /* min write size blocks */
  319. struct log *m_log; /* log specific stuff */
  320. int m_logbufs; /* number of log buffers */
  321. int m_logbsize; /* size of each log buffer */
  322. uint m_rsumlevels; /* rt summary levels */
  323. uint m_rsumsize; /* size of rt summary, bytes */
  324. struct xfs_inode *m_rbmip; /* pointer to bitmap inode */
  325. struct xfs_inode *m_rsumip; /* pointer to summary inode */
  326. struct xfs_inode *m_rootip; /* pointer to root directory */
  327. struct xfs_quotainfo *m_quotainfo; /* disk quota information */
  328. xfs_buftarg_t *m_ddev_targp; /* saves taking the address */
  329. xfs_buftarg_t *m_logdev_targp;/* ptr to log device */
  330. xfs_buftarg_t *m_rtdev_targp; /* ptr to rt device */
  331. __uint8_t m_dircook_elog; /* log d-cookie entry bits */
  332. __uint8_t m_blkbit_log; /* blocklog + NBBY */
  333. __uint8_t m_blkbb_log; /* blocklog - BBSHIFT */
  334. __uint8_t m_agno_log; /* log #ag's */
  335. __uint8_t m_agino_log; /* #bits for agino in inum */
  336. __uint8_t m_nreadaheads; /* #readahead buffers */
  337. __uint16_t m_inode_cluster_size;/* min inode buf size */
  338. uint m_blockmask; /* sb_blocksize-1 */
  339. uint m_blockwsize; /* sb_blocksize in words */
  340. uint m_blockwmask; /* blockwsize-1 */
  341. uint m_alloc_mxr[2]; /* XFS_ALLOC_BLOCK_MAXRECS */
  342. uint m_alloc_mnr[2]; /* XFS_ALLOC_BLOCK_MINRECS */
  343. uint m_bmap_dmxr[2]; /* XFS_BMAP_BLOCK_DMAXRECS */
  344. uint m_bmap_dmnr[2]; /* XFS_BMAP_BLOCK_DMINRECS */
  345. uint m_inobt_mxr[2]; /* XFS_INOBT_BLOCK_MAXRECS */
  346. uint m_inobt_mnr[2]; /* XFS_INOBT_BLOCK_MINRECS */
  347. uint m_ag_maxlevels; /* XFS_AG_MAXLEVELS */
  348. uint m_bm_maxlevels[2]; /* XFS_BM_MAXLEVELS */
  349. uint m_in_maxlevels; /* XFS_IN_MAXLEVELS */
  350. struct xfs_perag *m_perag; /* per-ag accounting info */
  351. struct rw_semaphore m_peraglock; /* lock for m_perag (pointer) */
  352. sema_t m_growlock; /* growfs mutex */
  353. int m_fixedfsid[2]; /* unchanged for life of FS */
  354. uint m_dmevmask; /* DMI events for this FS */
  355. __uint64_t m_flags; /* global mount flags */
  356. uint m_attroffset; /* inode attribute offset */
  357. uint m_dir_node_ents; /* #entries in a dir danode */
  358. uint m_attr_node_ents; /* #entries in attr danode */
  359. int m_ialloc_inos; /* inodes in inode allocation */
  360. int m_ialloc_blks; /* blocks in inode allocation */
  361. int m_litino; /* size of inode union area */
  362. int m_inoalign_mask;/* mask sb_inoalignmt if used */
  363. uint m_qflags; /* quota status flags */
  364. xfs_trans_reservations_t m_reservations;/* precomputed res values */
  365. __uint64_t m_maxicount; /* maximum inode count */
  366. __uint64_t m_maxioffset; /* maximum inode offset */
  367. __uint64_t m_resblks; /* total reserved blocks */
  368. __uint64_t m_resblks_avail;/* available reserved blocks */
  369. #if XFS_BIG_INUMS
  370. xfs_ino_t m_inoadd; /* add value for ino64_offset */
  371. #endif
  372. int m_dalign; /* stripe unit */
  373. int m_swidth; /* stripe width */
  374. int m_sinoalign; /* stripe unit inode alignment */
  375. int m_attr_magicpct;/* 37% of the blocksize */
  376. int m_dir_magicpct; /* 37% of the dir blocksize */
  377. __uint8_t m_mk_sharedro; /* mark shared ro on unmount */
  378. __uint8_t m_inode_quiesce;/* call quiesce on new inodes.
  379. field governed by m_ilock */
  380. __uint8_t m_sectbb_log; /* sectlog - BBSHIFT */
  381. int m_dirblksize; /* directory block sz--bytes */
  382. int m_dirblkfsbs; /* directory block sz--fsbs */
  383. xfs_dablk_t m_dirdatablk; /* blockno of dir data v2 */
  384. xfs_dablk_t m_dirleafblk; /* blockno of dir non-data v2 */
  385. xfs_dablk_t m_dirfreeblk; /* blockno of dirfreeindex v2 */
  386. uint m_chsize; /* size of next field */
  387. struct xfs_chash *m_chash; /* fs private inode per-cluster
  388. * hash table */
  389. struct xfs_dmops m_dm_ops; /* vector of DMI ops */
  390. struct xfs_qmops m_qm_ops; /* vector of XQM ops */
  391. struct xfs_ioops m_io_ops; /* vector of I/O ops */
  392. atomic_t m_active_trans; /* number trans frozen */
  393. #ifdef HAVE_PERCPU_SB
  394. xfs_icsb_cnts_t *m_sb_cnts; /* per-cpu superblock counters */
  395. unsigned long m_icsb_counters; /* disabled per-cpu counters */
  396. struct notifier_block m_icsb_notifier; /* hotplug cpu notifier */
  397. struct mutex m_icsb_mutex; /* balancer sync lock */
  398. #endif
  399. } xfs_mount_t;
  400. /*
  401. * Flags for m_flags.
  402. */
  403. #define XFS_MOUNT_WSYNC (1ULL << 0) /* for nfs - all metadata ops
  404. must be synchronous except
  405. for space allocations */
  406. #define XFS_MOUNT_INO64 (1ULL << 1)
  407. /* (1ULL << 2) -- currently unused */
  408. /* (1ULL << 3) -- currently unused */
  409. #define XFS_MOUNT_FS_SHUTDOWN (1ULL << 4) /* atomic stop of all filesystem
  410. operations, typically for
  411. disk errors in metadata */
  412. #define XFS_MOUNT_RETERR (1ULL << 6) /* return alignment errors to
  413. user */
  414. #define XFS_MOUNT_NOALIGN (1ULL << 7) /* turn off stripe alignment
  415. allocations */
  416. #define XFS_MOUNT_ATTR2 (1ULL << 8) /* allow use of attr2 format */
  417. /* (1ULL << 9) -- currently unused */
  418. #define XFS_MOUNT_NORECOVERY (1ULL << 10) /* no recovery - dirty fs */
  419. #define XFS_MOUNT_SHARED (1ULL << 11) /* shared mount */
  420. #define XFS_MOUNT_DFLT_IOSIZE (1ULL << 12) /* set default i/o size */
  421. #define XFS_MOUNT_OSYNCISOSYNC (1ULL << 13) /* o_sync is REALLY o_sync */
  422. /* osyncisdsync is now default*/
  423. #define XFS_MOUNT_32BITINODES (1ULL << 14) /* do not create inodes above
  424. * 32 bits in size */
  425. /* (1ULL << 15) -- currently unused */
  426. #define XFS_MOUNT_NOUUID (1ULL << 16) /* ignore uuid during mount */
  427. #define XFS_MOUNT_BARRIER (1ULL << 17)
  428. #define XFS_MOUNT_IDELETE (1ULL << 18) /* delete empty inode clusters*/
  429. #define XFS_MOUNT_SWALLOC (1ULL << 19) /* turn on stripe width
  430. * allocation */
  431. #define XFS_MOUNT_IHASHSIZE (1ULL << 20) /* inode hash table size */
  432. #define XFS_MOUNT_DIRSYNC (1ULL << 21) /* synchronous directory ops */
  433. #define XFS_MOUNT_COMPAT_IOSIZE (1ULL << 22) /* don't report large preferred
  434. * I/O size in stat() */
  435. #define XFS_MOUNT_NO_PERCPU_SB (1ULL << 23) /* don't use per-cpu superblock
  436. counters */
  437. /*
  438. * Default minimum read and write sizes.
  439. */
  440. #define XFS_READIO_LOG_LARGE 16
  441. #define XFS_WRITEIO_LOG_LARGE 16
  442. /*
  443. * Max and min values for mount-option defined I/O
  444. * preallocation sizes.
  445. */
  446. #define XFS_MAX_IO_LOG 30 /* 1G */
  447. #define XFS_MIN_IO_LOG PAGE_SHIFT
  448. /*
  449. * Synchronous read and write sizes. This should be
  450. * better for NFSv2 wsync filesystems.
  451. */
  452. #define XFS_WSYNC_READIO_LOG 15 /* 32K */
  453. #define XFS_WSYNC_WRITEIO_LOG 14 /* 16K */
  454. /*
  455. * Allow large block sizes to be reported to userspace programs if the
  456. * "largeio" mount option is used.
  457. *
  458. * If compatibility mode is specified, simply return the basic unit of caching
  459. * so that we don't get inefficient read/modify/write I/O from user apps.
  460. * Otherwise....
  461. *
  462. * If the underlying volume is a stripe, then return the stripe width in bytes
  463. * as the recommended I/O size. It is not a stripe and we've set a default
  464. * buffered I/O size, return that, otherwise return the compat default.
  465. */
  466. static inline unsigned long
  467. xfs_preferred_iosize(xfs_mount_t *mp)
  468. {
  469. if (mp->m_flags & XFS_MOUNT_COMPAT_IOSIZE)
  470. return PAGE_CACHE_SIZE;
  471. return (mp->m_swidth ?
  472. (mp->m_swidth << mp->m_sb.sb_blocklog) :
  473. ((mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) ?
  474. (1 << (int)MAX(mp->m_readio_log, mp->m_writeio_log)) :
  475. PAGE_CACHE_SIZE));
  476. }
  477. #define XFS_MAXIOFFSET(mp) ((mp)->m_maxioffset)
  478. #define XFS_FORCED_SHUTDOWN(mp) ((mp)->m_flags & XFS_MOUNT_FS_SHUTDOWN)
  479. #define xfs_force_shutdown(m,f) \
  480. bhv_vfs_force_shutdown((XFS_MTOVFS(m)), f, __FILE__, __LINE__)
  481. /*
  482. * Flags for xfs_mountfs
  483. */
  484. #define XFS_MFSI_SECOND 0x01 /* Secondary mount -- skip stuff */
  485. #define XFS_MFSI_CLIENT 0x02 /* Is a client -- skip lots of stuff */
  486. /* XFS_MFSI_RRINODES */
  487. #define XFS_MFSI_NOUNLINK 0x08 /* Skip unlinked inode processing in */
  488. /* log recovery */
  489. #define XFS_MFSI_NO_QUOTACHECK 0x10 /* Skip quotacheck processing */
  490. /* XFS_MFSI_CONVERT_SUNIT */
  491. #define XFS_MFSI_QUIET 0x40 /* Be silent if mount errors found */
  492. /*
  493. * Macros for getting from mount to vfs and back.
  494. */
  495. #define XFS_MTOVFS(mp) xfs_mtovfs(mp)
  496. static inline struct bhv_vfs *xfs_mtovfs(xfs_mount_t *mp)
  497. {
  498. return bhvtovfs(&mp->m_bhv);
  499. }
  500. #define XFS_BHVTOM(bdp) xfs_bhvtom(bdp)
  501. static inline xfs_mount_t *xfs_bhvtom(bhv_desc_t *bdp)
  502. {
  503. return (xfs_mount_t *)BHV_PDATA(bdp);
  504. }
  505. #define XFS_VFSTOM(vfs) xfs_vfstom(vfs)
  506. static inline xfs_mount_t *xfs_vfstom(bhv_vfs_t *vfs)
  507. {
  508. return XFS_BHVTOM(bhv_lookup_range(VFS_BHVHEAD(vfs),
  509. VFS_POSITION_XFS, VFS_POSITION_XFS));
  510. }
  511. #define XFS_DADDR_TO_AGNO(mp,d) xfs_daddr_to_agno(mp,d)
  512. static inline xfs_agnumber_t
  513. xfs_daddr_to_agno(struct xfs_mount *mp, xfs_daddr_t d)
  514. {
  515. xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d);
  516. do_div(ld, mp->m_sb.sb_agblocks);
  517. return (xfs_agnumber_t) ld;
  518. }
  519. #define XFS_DADDR_TO_AGBNO(mp,d) xfs_daddr_to_agbno(mp,d)
  520. static inline xfs_agblock_t
  521. xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d)
  522. {
  523. xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d);
  524. return (xfs_agblock_t) do_div(ld, mp->m_sb.sb_agblocks);
  525. }
  526. /*
  527. * Per-cpu superblock locking functions
  528. */
  529. #ifdef HAVE_PERCPU_SB
  530. STATIC_INLINE void
  531. xfs_icsb_lock(xfs_mount_t *mp)
  532. {
  533. mutex_lock(&mp->m_icsb_mutex);
  534. }
  535. STATIC_INLINE void
  536. xfs_icsb_unlock(xfs_mount_t *mp)
  537. {
  538. mutex_unlock(&mp->m_icsb_mutex);
  539. }
  540. #else
  541. #define xfs_icsb_lock(mp)
  542. #define xfs_icsb_unlock(mp)
  543. #endif
  544. /*
  545. * This structure is for use by the xfs_mod_incore_sb_batch() routine.
  546. * xfs_growfs can specify a few fields which are more than int limit
  547. */
  548. typedef struct xfs_mod_sb {
  549. xfs_sb_field_t msb_field; /* Field to modify, see below */
  550. int64_t msb_delta; /* Change to make to specified field */
  551. } xfs_mod_sb_t;
  552. #define XFS_MOUNT_ILOCK(mp) mutex_lock(&((mp)->m_ilock))
  553. #define XFS_MOUNT_IUNLOCK(mp) mutex_unlock(&((mp)->m_ilock))
  554. #define XFS_SB_LOCK(mp) mutex_spinlock(&(mp)->m_sb_lock)
  555. #define XFS_SB_UNLOCK(mp,s) mutex_spinunlock(&(mp)->m_sb_lock,(s))
  556. extern xfs_mount_t *xfs_mount_init(void);
  557. extern void xfs_mod_sb(xfs_trans_t *, __int64_t);
  558. extern void xfs_mount_free(xfs_mount_t *mp, int remove_bhv);
  559. extern int xfs_mountfs(struct bhv_vfs *, xfs_mount_t *mp, int);
  560. extern void xfs_mountfs_check_barriers(xfs_mount_t *mp);
  561. extern int xfs_unmountfs(xfs_mount_t *, struct cred *);
  562. extern void xfs_unmountfs_close(xfs_mount_t *, struct cred *);
  563. extern int xfs_unmountfs_writesb(xfs_mount_t *);
  564. extern int xfs_unmount_flush(xfs_mount_t *, int);
  565. extern int xfs_mod_incore_sb(xfs_mount_t *, xfs_sb_field_t, int64_t, int);
  566. extern int xfs_mod_incore_sb_unlocked(xfs_mount_t *, xfs_sb_field_t,
  567. int64_t, int);
  568. extern int xfs_mod_incore_sb_batch(xfs_mount_t *, xfs_mod_sb_t *,
  569. uint, int);
  570. extern struct xfs_buf *xfs_getsb(xfs_mount_t *, int);
  571. extern int xfs_readsb(xfs_mount_t *, int);
  572. extern void xfs_freesb(xfs_mount_t *);
  573. extern void xfs_do_force_shutdown(bhv_desc_t *, int, char *, int);
  574. extern int xfs_syncsub(xfs_mount_t *, int, int *);
  575. extern int xfs_sync_inodes(xfs_mount_t *, int, int *);
  576. extern xfs_agnumber_t xfs_initialize_perag(struct bhv_vfs *, xfs_mount_t *,
  577. xfs_agnumber_t);
  578. extern void xfs_xlatesb(void *, struct xfs_sb *, int, __int64_t);
  579. extern struct xfs_dmops xfs_dmcore_stub;
  580. extern struct xfs_qmops xfs_qmcore_stub;
  581. extern struct xfs_ioops xfs_iocore_xfs;
  582. extern int xfs_init(void);
  583. extern void xfs_cleanup(void);
  584. #endif /* __KERNEL__ */
  585. #endif /* __XFS_MOUNT_H__ */