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 21 22typedef struct xfs_trans_reservations { 23 uint tr_write; /* extent alloc trans */ 24 uint tr_itruncate; /* truncate trans */ 25 uint tr_rename; /* rename trans */ 26 uint tr_link; /* link trans */ 27 uint tr_remove; /* unlink trans */ 28 uint tr_symlink; /* symlink trans */ 29 uint tr_create; /* create trans */ 30 uint tr_mkdir; /* mkdir trans */ 31 uint tr_ifree; /* inode free trans */ 32 uint tr_ichange; /* inode update trans */ 33 uint tr_growdata; /* fs data section grow trans */ 34 uint tr_swrite; /* sync write inode trans */ 35 uint tr_addafork; /* cvt inode to attributed trans */ 36 uint tr_writeid; /* write setuid/setgid file */ 37 uint tr_attrinval; /* attr fork buffer invalidation */ 38 uint tr_attrset; /* set/create an attribute */ 39 uint tr_attrrm; /* remove an attribute */ 40 uint tr_clearagi; /* clear bad agi unlinked ino bucket */ 41 uint tr_growrtalloc; /* grow realtime allocations */ 42 uint tr_growrtzero; /* grow realtime zeroing */ 43 uint tr_growrtfree; /* grow realtime freeing */ 44} xfs_trans_reservations_t; 45 46#ifndef __KERNEL__ 47/* 48 * Moved here from xfs_ag.h to avoid reordering header files 49 */ 50#define XFS_DADDR_TO_AGNO(mp,d) \ 51 ((xfs_agnumber_t)(XFS_BB_TO_FSBT(mp, d) / (mp)->m_sb.sb_agblocks)) 52#define XFS_DADDR_TO_AGBNO(mp,d) \ 53 ((xfs_agblock_t)(XFS_BB_TO_FSBT(mp, d) % (mp)->m_sb.sb_agblocks)) 54#else 55struct cred; 56struct log; 57struct bhv_vfs; 58struct bhv_vnode; 59struct xfs_mount_args; 60struct xfs_ihash; 61struct xfs_chash; 62struct xfs_inode; 63struct xfs_perag; 64struct xfs_iocore; 65struct xfs_bmbt_irec; 66struct xfs_bmap_free; 67struct xfs_extdelta; 68struct xfs_swapext; 69 70extern struct bhv_vfsops xfs_vfsops; 71extern struct bhv_vnodeops xfs_vnodeops; 72 73#define AIL_LOCK_T lock_t 74#define AIL_LOCKINIT(x,y) spinlock_init(x,y) 75#define AIL_LOCK_DESTROY(x) spinlock_destroy(x) 76#define AIL_LOCK(mp,s) s=mutex_spinlock(&(mp)->m_ail_lock) 77#define AIL_UNLOCK(mp,s) mutex_spinunlock(&(mp)->m_ail_lock, s) 78 79 80/* 81 * Prototypes and functions for the Data Migration subsystem. 82 */ 83 84typedef int (*xfs_send_data_t)(int, struct bhv_vnode *, 85 xfs_off_t, size_t, int, bhv_vrwlock_t *); 86typedef int (*xfs_send_mmap_t)(struct vm_area_struct *, uint); 87typedef int (*xfs_send_destroy_t)(struct bhv_vnode *, dm_right_t); 88typedef int (*xfs_send_namesp_t)(dm_eventtype_t, struct bhv_vfs *, 89 struct bhv_vnode *, 90 dm_right_t, struct bhv_vnode *, dm_right_t, 91 char *, char *, mode_t, int, int); 92typedef void (*xfs_send_unmount_t)(struct bhv_vfs *, struct bhv_vnode *, 93 dm_right_t, mode_t, int, int); 94 95typedef struct xfs_dmops { 96 xfs_send_data_t xfs_send_data; 97 xfs_send_mmap_t xfs_send_mmap; 98 xfs_send_destroy_t xfs_send_destroy; 99 xfs_send_namesp_t xfs_send_namesp; 100 xfs_send_unmount_t xfs_send_unmount; 101} xfs_dmops_t; 102 103#define XFS_SEND_DATA(mp, ev,vp,off,len,fl,lock) \ 104 (*(mp)->m_dm_ops.xfs_send_data)(ev,vp,off,len,fl,lock) 105#define XFS_SEND_MMAP(mp, vma,fl) \ 106 (*(mp)->m_dm_ops.xfs_send_mmap)(vma,fl) 107#define XFS_SEND_DESTROY(mp, vp,right) \ 108 (*(mp)->m_dm_ops.xfs_send_destroy)(vp,right) 109#define XFS_SEND_NAMESP(mp, ev,b1,r1,b2,r2,n1,n2,mode,rval,fl) \ 110 (*(mp)->m_dm_ops.xfs_send_namesp)(ev,NULL,b1,r1,b2,r2,n1,n2,mode,rval,fl) 111#define XFS_SEND_PREUNMOUNT(mp, vfs,b1,r1,b2,r2,n1,n2,mode,rval,fl) \ 112 (*(mp)->m_dm_ops.xfs_send_namesp)(DM_EVENT_PREUNMOUNT,vfs,b1,r1,b2,r2,n1,n2,mode,rval,fl) 113#define XFS_SEND_UNMOUNT(mp, vfsp,vp,right,mode,rval,fl) \ 114 (*(mp)->m_dm_ops.xfs_send_unmount)(vfsp,vp,right,mode,rval,fl) 115 116 117/* 118 * Prototypes and functions for the Quota Management subsystem. 119 */ 120 121struct xfs_dquot; 122struct xfs_dqtrxops; 123struct xfs_quotainfo; 124 125typedef int (*xfs_qminit_t)(struct xfs_mount *, uint *, uint *); 126typedef int (*xfs_qmmount_t)(struct xfs_mount *, uint, uint, int); 127typedef int (*xfs_qmunmount_t)(struct xfs_mount *); 128typedef void (*xfs_qmdone_t)(struct xfs_mount *); 129typedef void (*xfs_dqrele_t)(struct xfs_dquot *); 130typedef int (*xfs_dqattach_t)(struct xfs_inode *, uint); 131typedef void (*xfs_dqdetach_t)(struct xfs_inode *); 132typedef int (*xfs_dqpurgeall_t)(struct xfs_mount *, uint); 133typedef int (*xfs_dqvopalloc_t)(struct xfs_mount *, 134 struct xfs_inode *, uid_t, gid_t, prid_t, uint, 135 struct xfs_dquot **, struct xfs_dquot **); 136typedef void (*xfs_dqvopcreate_t)(struct xfs_trans *, struct xfs_inode *, 137 struct xfs_dquot *, struct xfs_dquot *); 138typedef int (*xfs_dqvoprename_t)(struct xfs_inode **); 139typedef struct xfs_dquot * (*xfs_dqvopchown_t)( 140 struct xfs_trans *, struct xfs_inode *, 141 struct xfs_dquot **, struct xfs_dquot *); 142typedef int (*xfs_dqvopchownresv_t)(struct xfs_trans *, struct xfs_inode *, 143 struct xfs_dquot *, struct xfs_dquot *, uint); 144 145typedef struct xfs_qmops { 146 xfs_qminit_t xfs_qminit; 147 xfs_qmdone_t xfs_qmdone; 148 xfs_qmmount_t xfs_qmmount; 149 xfs_qmunmount_t xfs_qmunmount; 150 xfs_dqrele_t xfs_dqrele; 151 xfs_dqattach_t xfs_dqattach; 152 xfs_dqdetach_t xfs_dqdetach; 153 xfs_dqpurgeall_t xfs_dqpurgeall; 154 xfs_dqvopalloc_t xfs_dqvopalloc; 155 xfs_dqvopcreate_t xfs_dqvopcreate; 156 xfs_dqvoprename_t xfs_dqvoprename; 157 xfs_dqvopchown_t xfs_dqvopchown; 158 xfs_dqvopchownresv_t xfs_dqvopchownresv; 159 struct xfs_dqtrxops *xfs_dqtrxops; 160} xfs_qmops_t; 161 162#define XFS_QM_INIT(mp, mnt, fl) \ 163 (*(mp)->m_qm_ops.xfs_qminit)(mp, mnt, fl) 164#define XFS_QM_MOUNT(mp, mnt, fl, mfsi_flags) \ 165 (*(mp)->m_qm_ops.xfs_qmmount)(mp, mnt, fl, mfsi_flags) 166#define XFS_QM_UNMOUNT(mp) \ 167 (*(mp)->m_qm_ops.xfs_qmunmount)(mp) 168#define XFS_QM_DONE(mp) \ 169 (*(mp)->m_qm_ops.xfs_qmdone)(mp) 170#define XFS_QM_DQRELE(mp, dq) \ 171 (*(mp)->m_qm_ops.xfs_dqrele)(dq) 172#define XFS_QM_DQATTACH(mp, ip, fl) \ 173 (*(mp)->m_qm_ops.xfs_dqattach)(ip, fl) 174#define XFS_QM_DQDETACH(mp, ip) \ 175 (*(mp)->m_qm_ops.xfs_dqdetach)(ip) 176#define XFS_QM_DQPURGEALL(mp, fl) \ 177 (*(mp)->m_qm_ops.xfs_dqpurgeall)(mp, fl) 178#define XFS_QM_DQVOPALLOC(mp, ip, uid, gid, prid, fl, dq1, dq2) \ 179 (*(mp)->m_qm_ops.xfs_dqvopalloc)(mp, ip, uid, gid, prid, fl, dq1, dq2) 180#define XFS_QM_DQVOPCREATE(mp, tp, ip, dq1, dq2) \ 181 (*(mp)->m_qm_ops.xfs_dqvopcreate)(tp, ip, dq1, dq2) 182#define XFS_QM_DQVOPRENAME(mp, ip) \ 183 (*(mp)->m_qm_ops.xfs_dqvoprename)(ip) 184#define XFS_QM_DQVOPCHOWN(mp, tp, ip, dqp, dq) \ 185 (*(mp)->m_qm_ops.xfs_dqvopchown)(tp, ip, dqp, dq) 186#define XFS_QM_DQVOPCHOWNRESV(mp, tp, ip, dq1, dq2, fl) \ 187 (*(mp)->m_qm_ops.xfs_dqvopchownresv)(tp, ip, dq1, dq2, fl) 188 189 190/* 191 * Prototypes and functions for I/O core modularization. 192 */ 193 194typedef int (*xfs_ioinit_t)(struct bhv_vfs *, 195 struct xfs_mount_args *, int); 196typedef int (*xfs_bmapi_t)(struct xfs_trans *, void *, 197 xfs_fileoff_t, xfs_filblks_t, int, 198 xfs_fsblock_t *, xfs_extlen_t, 199 struct xfs_bmbt_irec *, int *, 200 struct xfs_bmap_free *, struct xfs_extdelta *); 201typedef int (*xfs_bunmapi_t)(struct xfs_trans *, 202 void *, xfs_fileoff_t, 203 xfs_filblks_t, int, xfs_extnum_t, 204 xfs_fsblock_t *, struct xfs_bmap_free *, 205 struct xfs_extdelta *, int *); 206typedef int (*xfs_bmap_eof_t)(void *, xfs_fileoff_t, int, int *); 207typedef int (*xfs_iomap_write_direct_t)( 208 void *, xfs_off_t, size_t, int, 209 struct xfs_bmbt_irec *, int *, int); 210typedef int (*xfs_iomap_write_delay_t)( 211 void *, xfs_off_t, size_t, int, 212 struct xfs_bmbt_irec *, int *); 213typedef int (*xfs_iomap_write_allocate_t)( 214 void *, xfs_off_t, size_t, 215 struct xfs_bmbt_irec *, int *); 216typedef int (*xfs_iomap_write_unwritten_t)( 217 void *, xfs_off_t, size_t); 218typedef uint (*xfs_lck_map_shared_t)(void *); 219typedef void (*xfs_lock_t)(void *, uint); 220typedef void (*xfs_lock_demote_t)(void *, uint); 221typedef int (*xfs_lock_nowait_t)(void *, uint); 222typedef void (*xfs_unlk_t)(void *, unsigned int); 223typedef xfs_fsize_t (*xfs_size_t)(void *); 224typedef xfs_fsize_t (*xfs_iodone_t)(struct bhv_vfs *); 225typedef int (*xfs_swap_extents_t)(void *, void *, 226 struct xfs_swapext*); 227 228typedef struct xfs_ioops { 229 xfs_ioinit_t xfs_ioinit; 230 xfs_bmapi_t xfs_bmapi_func; 231 xfs_bunmapi_t xfs_bunmapi_func; 232 xfs_bmap_eof_t xfs_bmap_eof_func; 233 xfs_iomap_write_direct_t xfs_iomap_write_direct; 234 xfs_iomap_write_delay_t xfs_iomap_write_delay; 235 xfs_iomap_write_allocate_t xfs_iomap_write_allocate; 236 xfs_iomap_write_unwritten_t xfs_iomap_write_unwritten; 237 xfs_lock_t xfs_ilock; 238 xfs_lck_map_shared_t xfs_lck_map_shared; 239 xfs_lock_demote_t xfs_ilock_demote; 240 xfs_lock_nowait_t xfs_ilock_nowait; 241 xfs_unlk_t xfs_unlock; 242 xfs_size_t xfs_size_func; 243 xfs_iodone_t xfs_iodone; 244 xfs_swap_extents_t xfs_swap_extents_func; 245} xfs_ioops_t; 246 247#define XFS_IOINIT(vfsp, args, flags) \ 248 (*(mp)->m_io_ops.xfs_ioinit)(vfsp, args, flags) 249#define XFS_BMAPI(mp, trans,io,bno,len,f,first,tot,mval,nmap,flist,delta) \ 250 (*(mp)->m_io_ops.xfs_bmapi_func) \ 251 (trans,(io)->io_obj,bno,len,f,first,tot,mval,nmap,flist,delta) 252#define XFS_BUNMAPI(mp, trans,io,bno,len,f,nexts,first,flist,delta,done) \ 253 (*(mp)->m_io_ops.xfs_bunmapi_func) \ 254 (trans,(io)->io_obj,bno,len,f,nexts,first,flist,delta,done) 255#define XFS_BMAP_EOF(mp, io, endoff, whichfork, eof) \ 256 (*(mp)->m_io_ops.xfs_bmap_eof_func) \ 257 ((io)->io_obj, endoff, whichfork, eof) 258#define XFS_IOMAP_WRITE_DIRECT(mp, io, offset, count, flags, mval, nmap, found)\ 259 (*(mp)->m_io_ops.xfs_iomap_write_direct) \ 260 ((io)->io_obj, offset, count, flags, mval, nmap, found) 261#define XFS_IOMAP_WRITE_DELAY(mp, io, offset, count, flags, mval, nmap) \ 262 (*(mp)->m_io_ops.xfs_iomap_write_delay) \ 263 ((io)->io_obj, offset, count, flags, mval, nmap) 264#define XFS_IOMAP_WRITE_ALLOCATE(mp, io, offset, count, mval, nmap) \ 265 (*(mp)->m_io_ops.xfs_iomap_write_allocate) \ 266 ((io)->io_obj, offset, count, mval, nmap) 267#define XFS_IOMAP_WRITE_UNWRITTEN(mp, io, offset, count) \ 268 (*(mp)->m_io_ops.xfs_iomap_write_unwritten) \ 269 ((io)->io_obj, offset, count) 270#define XFS_LCK_MAP_SHARED(mp, io) \ 271 (*(mp)->m_io_ops.xfs_lck_map_shared)((io)->io_obj) 272#define XFS_ILOCK(mp, io, mode) \ 273 (*(mp)->m_io_ops.xfs_ilock)((io)->io_obj, mode) 274#define XFS_ILOCK_NOWAIT(mp, io, mode) \ 275 (*(mp)->m_io_ops.xfs_ilock_nowait)((io)->io_obj, mode) 276#define XFS_IUNLOCK(mp, io, mode) \ 277 (*(mp)->m_io_ops.xfs_unlock)((io)->io_obj, mode) 278#define XFS_ILOCK_DEMOTE(mp, io, mode) \ 279 (*(mp)->m_io_ops.xfs_ilock_demote)((io)->io_obj, mode) 280#define XFS_SIZE(mp, io) \ 281 (*(mp)->m_io_ops.xfs_size_func)((io)->io_obj) 282#define XFS_IODONE(vfsp) \ 283 (*(mp)->m_io_ops.xfs_iodone)(vfsp) 284#define XFS_SWAP_EXTENTS(mp, io, tio, sxp) \ 285 (*(mp)->m_io_ops.xfs_swap_extents_func) \ 286 ((io)->io_obj, (tio)->io_obj, sxp) 287 288#ifdef HAVE_PERCPU_SB 289 290/* 291 * Valid per-cpu incore superblock counters. Note that if you add new counters, 292 * you may need to define new counter disabled bit field descriptors as there 293 * are more possible fields in the superblock that can fit in a bitfield on a 294 * 32 bit platform. The XFS_SBS_* values for the current current counters just 295 * fit. 296 */ 297typedef struct xfs_icsb_cnts { 298 uint64_t icsb_fdblocks; 299 uint64_t icsb_ifree; 300 uint64_t icsb_icount; 301 unsigned long icsb_flags; 302} xfs_icsb_cnts_t; 303 304#define XFS_ICSB_FLAG_LOCK (1 << 0) /* counter lock bit */ 305 306#define XFS_ICSB_SB_LOCKED (1 << 0) /* sb already locked */ 307#define XFS_ICSB_LAZY_COUNT (1 << 1) /* accuracy not needed */ 308 309extern int xfs_icsb_init_counters(struct xfs_mount *); 310extern void xfs_icsb_reinit_counters(struct xfs_mount *); 311extern void xfs_icsb_sync_counters_flags(struct xfs_mount *, int); 312 313#else 314#define xfs_icsb_init_counters(mp) (0) 315#define xfs_icsb_reinit_counters(mp) do { } while (0) 316#define xfs_icsb_sync_counters_flags(mp, flags) do { } while (0) 317#endif 318 319typedef struct xfs_mount { 320 bhv_desc_t m_bhv; /* vfs xfs behavior */ 321 xfs_tid_t m_tid; /* next unused tid for fs */ 322 AIL_LOCK_T m_ail_lock; /* fs AIL mutex */ 323 xfs_ail_entry_t m_ail; /* fs active log item list */ 324 uint m_ail_gen; /* fs AIL generation count */ 325 xfs_sb_t m_sb; /* copy of fs superblock */ 326 lock_t m_sb_lock; /* sb counter mutex */ 327 struct xfs_buf *m_sb_bp; /* buffer for superblock */ 328 char *m_fsname; /* filesystem name */ 329 int m_fsname_len; /* strlen of fs name */ 330 char *m_rtname; /* realtime device name */ 331 char *m_logname; /* external log device name */ 332 int m_bsize; /* fs logical block size */ 333 xfs_agnumber_t m_agfrotor; /* last ag where space found */ 334 xfs_agnumber_t m_agirotor; /* last ag dir inode alloced */ 335 lock_t m_agirotor_lock;/* .. and lock protecting it */ 336 xfs_agnumber_t m_maxagi; /* highest inode alloc group */ 337 size_t m_ihsize; /* size of next field */ 338 struct xfs_ihash *m_ihash; /* fs private inode hash table*/ 339 struct xfs_inode *m_inodes; /* active inode list */ 340 struct list_head m_del_inodes; /* inodes to reclaim */ 341 mutex_t m_ilock; /* inode list mutex */ 342 uint m_ireclaims; /* count of calls to reclaim*/ 343 uint m_readio_log; /* min read size log bytes */ 344 uint m_readio_blocks; /* min read size blocks */ 345 uint m_writeio_log; /* min write size log bytes */ 346 uint m_writeio_blocks; /* min write size blocks */ 347 struct log *m_log; /* log specific stuff */ 348 int m_logbufs; /* number of log buffers */ 349 int m_logbsize; /* size of each log buffer */ 350 uint m_rsumlevels; /* rt summary levels */ 351 uint m_rsumsize; /* size of rt summary, bytes */ 352 struct xfs_inode *m_rbmip; /* pointer to bitmap inode */ 353 struct xfs_inode *m_rsumip; /* pointer to summary inode */ 354 struct xfs_inode *m_rootip; /* pointer to root directory */ 355 struct xfs_quotainfo *m_quotainfo; /* disk quota information */ 356 xfs_buftarg_t *m_ddev_targp; /* saves taking the address */ 357 xfs_buftarg_t *m_logdev_targp;/* ptr to log device */ 358 xfs_buftarg_t *m_rtdev_targp; /* ptr to rt device */ 359 __uint8_t m_dircook_elog; /* log d-cookie entry bits */ 360 __uint8_t m_blkbit_log; /* blocklog + NBBY */ 361 __uint8_t m_blkbb_log; /* blocklog - BBSHIFT */ 362 __uint8_t m_agno_log; /* log #ag's */ 363 __uint8_t m_agino_log; /* #bits for agino in inum */ 364 __uint8_t m_nreadaheads; /* #readahead buffers */ 365 __uint16_t m_inode_cluster_size;/* min inode buf size */ 366 uint m_blockmask; /* sb_blocksize-1 */ 367 uint m_blockwsize; /* sb_blocksize in words */ 368 uint m_blockwmask; /* blockwsize-1 */ 369 uint m_alloc_mxr[2]; /* XFS_ALLOC_BLOCK_MAXRECS */ 370 uint m_alloc_mnr[2]; /* XFS_ALLOC_BLOCK_MINRECS */ 371 uint m_bmap_dmxr[2]; /* XFS_BMAP_BLOCK_DMAXRECS */ 372 uint m_bmap_dmnr[2]; /* XFS_BMAP_BLOCK_DMINRECS */ 373 uint m_inobt_mxr[2]; /* XFS_INOBT_BLOCK_MAXRECS */ 374 uint m_inobt_mnr[2]; /* XFS_INOBT_BLOCK_MINRECS */ 375 uint m_ag_maxlevels; /* XFS_AG_MAXLEVELS */ 376 uint m_bm_maxlevels[2]; /* XFS_BM_MAXLEVELS */ 377 uint m_in_maxlevels; /* XFS_IN_MAXLEVELS */ 378 struct xfs_perag *m_perag; /* per-ag accounting info */ 379 struct rw_semaphore m_peraglock; /* lock for m_perag (pointer) */ 380 sema_t m_growlock; /* growfs mutex */ 381 int m_fixedfsid[2]; /* unchanged for life of FS */ 382 uint m_dmevmask; /* DMI events for this FS */ 383 __uint64_t m_flags; /* global mount flags */ 384 uint m_attroffset; /* inode attribute offset */ 385 uint m_dir_node_ents; /* #entries in a dir danode */ 386 uint m_attr_node_ents; /* #entries in attr danode */ 387 int m_ialloc_inos; /* inodes in inode allocation */ 388 int m_ialloc_blks; /* blocks in inode allocation */ 389 int m_litino; /* size of inode union area */ 390 int m_inoalign_mask;/* mask sb_inoalignmt if used */ 391 uint m_qflags; /* quota status flags */ 392 xfs_trans_reservations_t m_reservations;/* precomputed res values */ 393 __uint64_t m_maxicount; /* maximum inode count */ 394 __uint64_t m_maxioffset; /* maximum inode offset */ 395 __uint64_t m_resblks; /* total reserved blocks */ 396 __uint64_t m_resblks_avail;/* available reserved blocks */ 397#if XFS_BIG_INUMS 398 xfs_ino_t m_inoadd; /* add value for ino64_offset */ 399#endif 400 int m_dalign; /* stripe unit */ 401 int m_swidth; /* stripe width */ 402 int m_sinoalign; /* stripe unit inode alignment */ 403 int m_attr_magicpct;/* 37% of the blocksize */ 404 int m_dir_magicpct; /* 37% of the dir blocksize */ 405 __uint8_t m_mk_sharedro; /* mark shared ro on unmount */ 406 __uint8_t m_inode_quiesce;/* call quiesce on new inodes. 407 field governed by m_ilock */ 408 __uint8_t m_sectbb_log; /* sectlog - BBSHIFT */ 409 int m_dirblksize; /* directory block sz--bytes */ 410 int m_dirblkfsbs; /* directory block sz--fsbs */ 411 xfs_dablk_t m_dirdatablk; /* blockno of dir data v2 */ 412 xfs_dablk_t m_dirleafblk; /* blockno of dir non-data v2 */ 413 xfs_dablk_t m_dirfreeblk; /* blockno of dirfreeindex v2 */ 414 uint m_chsize; /* size of next field */ 415 struct xfs_chash *m_chash; /* fs private inode per-cluster 416 * hash table */ 417 struct xfs_dmops m_dm_ops; /* vector of DMI ops */ 418 struct xfs_qmops m_qm_ops; /* vector of XQM ops */ 419 struct xfs_ioops m_io_ops; /* vector of I/O ops */ 420 atomic_t m_active_trans; /* number trans frozen */ 421#ifdef HAVE_PERCPU_SB 422 xfs_icsb_cnts_t *m_sb_cnts; /* per-cpu superblock counters */ 423 unsigned long m_icsb_counters; /* disabled per-cpu counters */ 424 struct notifier_block m_icsb_notifier; /* hotplug cpu notifier */ 425 struct mutex m_icsb_mutex; /* balancer sync lock */ 426#endif 427} xfs_mount_t; 428 429/* 430 * Flags for m_flags. 431 */ 432#define XFS_MOUNT_WSYNC (1ULL << 0) /* for nfs - all metadata ops 433 must be synchronous except 434 for space allocations */ 435#define XFS_MOUNT_INO64 (1ULL << 1) 436 /* (1ULL << 2) -- currently unused */ 437 /* (1ULL << 3) -- currently unused */ 438#define XFS_MOUNT_FS_SHUTDOWN (1ULL << 4) /* atomic stop of all filesystem 439 operations, typically for 440 disk errors in metadata */ 441#define XFS_MOUNT_RETERR (1ULL << 6) /* return alignment errors to 442 user */ 443#define XFS_MOUNT_NOALIGN (1ULL << 7) /* turn off stripe alignment 444 allocations */ 445#define XFS_MOUNT_ATTR2 (1ULL << 8) /* allow use of attr2 format */ 446 /* (1ULL << 9) -- currently unused */ 447#define XFS_MOUNT_NORECOVERY (1ULL << 10) /* no recovery - dirty fs */ 448#define XFS_MOUNT_SHARED (1ULL << 11) /* shared mount */ 449#define XFS_MOUNT_DFLT_IOSIZE (1ULL << 12) /* set default i/o size */ 450#define XFS_MOUNT_OSYNCISOSYNC (1ULL << 13) /* o_sync is REALLY o_sync */ 451 /* osyncisdsync is now default*/ 452#define XFS_MOUNT_32BITINODES (1ULL << 14) /* do not create inodes above 453 * 32 bits in size */ 454 /* (1ULL << 15) -- currently unused */ 455#define XFS_MOUNT_NOUUID (1ULL << 16) /* ignore uuid during mount */ 456#define XFS_MOUNT_BARRIER (1ULL << 17) 457#define XFS_MOUNT_IDELETE (1ULL << 18) /* delete empty inode clusters*/ 458#define XFS_MOUNT_SWALLOC (1ULL << 19) /* turn on stripe width 459 * allocation */ 460#define XFS_MOUNT_IHASHSIZE (1ULL << 20) /* inode hash table size */ 461#define XFS_MOUNT_DIRSYNC (1ULL << 21) /* synchronous directory ops */ 462#define XFS_MOUNT_COMPAT_IOSIZE (1ULL << 22) /* don't report large preferred 463 * I/O size in stat() */ 464#define XFS_MOUNT_NO_PERCPU_SB (1ULL << 23) /* don't use per-cpu superblock 465 counters */ 466 467 468/* 469 * Default minimum read and write sizes. 470 */ 471#define XFS_READIO_LOG_LARGE 16 472#define XFS_WRITEIO_LOG_LARGE 16 473 474/* 475 * Max and min values for mount-option defined I/O 476 * preallocation sizes. 477 */ 478#define XFS_MAX_IO_LOG 30 /* 1G */ 479#define XFS_MIN_IO_LOG PAGE_SHIFT 480 481/* 482 * Synchronous read and write sizes. This should be 483 * better for NFSv2 wsync filesystems. 484 */ 485#define XFS_WSYNC_READIO_LOG 15 /* 32K */ 486#define XFS_WSYNC_WRITEIO_LOG 14 /* 16K */ 487 488/* 489 * Allow large block sizes to be reported to userspace programs if the 490 * "largeio" mount option is used. 491 * 492 * If compatibility mode is specified, simply return the basic unit of caching 493 * so that we don't get inefficient read/modify/write I/O from user apps. 494 * Otherwise.... 495 * 496 * If the underlying volume is a stripe, then return the stripe width in bytes 497 * as the recommended I/O size. It is not a stripe and we've set a default 498 * buffered I/O size, return that, otherwise return the compat default. 499 */ 500static inline unsigned long 501xfs_preferred_iosize(xfs_mount_t *mp) 502{ 503 if (mp->m_flags & XFS_MOUNT_COMPAT_IOSIZE) 504 return PAGE_CACHE_SIZE; 505 return (mp->m_swidth ? 506 (mp->m_swidth << mp->m_sb.sb_blocklog) : 507 ((mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) ? 508 (1 << (int)MAX(mp->m_readio_log, mp->m_writeio_log)) : 509 PAGE_CACHE_SIZE)); 510} 511 512#define XFS_MAXIOFFSET(mp) ((mp)->m_maxioffset) 513 514#define XFS_FORCED_SHUTDOWN(mp) ((mp)->m_flags & XFS_MOUNT_FS_SHUTDOWN) 515#define xfs_force_shutdown(m,f) \ 516 bhv_vfs_force_shutdown((XFS_MTOVFS(m)), f, __FILE__, __LINE__) 517 518/* 519 * Flags for xfs_mountfs 520 */ 521#define XFS_MFSI_SECOND 0x01 /* Secondary mount -- skip stuff */ 522#define XFS_MFSI_CLIENT 0x02 /* Is a client -- skip lots of stuff */ 523/* XFS_MFSI_RRINODES */ 524#define XFS_MFSI_NOUNLINK 0x08 /* Skip unlinked inode processing in */ 525 /* log recovery */ 526#define XFS_MFSI_NO_QUOTACHECK 0x10 /* Skip quotacheck processing */ 527/* XFS_MFSI_CONVERT_SUNIT */ 528#define XFS_MFSI_QUIET 0x40 /* Be silent if mount errors found */ 529 530/* 531 * Macros for getting from mount to vfs and back. 532 */ 533#define XFS_MTOVFS(mp) xfs_mtovfs(mp) 534static inline struct bhv_vfs *xfs_mtovfs(xfs_mount_t *mp) 535{ 536 return bhvtovfs(&mp->m_bhv); 537} 538 539#define XFS_BHVTOM(bdp) xfs_bhvtom(bdp) 540static inline xfs_mount_t *xfs_bhvtom(bhv_desc_t *bdp) 541{ 542 return (xfs_mount_t *)BHV_PDATA(bdp); 543} 544 545#define XFS_VFSTOM(vfs) xfs_vfstom(vfs) 546static inline xfs_mount_t *xfs_vfstom(bhv_vfs_t *vfs) 547{ 548 return XFS_BHVTOM(bhv_lookup_range(VFS_BHVHEAD(vfs), 549 VFS_POSITION_XFS, VFS_POSITION_XFS)); 550} 551 552#define XFS_DADDR_TO_AGNO(mp,d) xfs_daddr_to_agno(mp,d) 553static inline xfs_agnumber_t 554xfs_daddr_to_agno(struct xfs_mount *mp, xfs_daddr_t d) 555{ 556 xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d); 557 do_div(ld, mp->m_sb.sb_agblocks); 558 return (xfs_agnumber_t) ld; 559} 560 561#define XFS_DADDR_TO_AGBNO(mp,d) xfs_daddr_to_agbno(mp,d) 562static inline xfs_agblock_t 563xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d) 564{ 565 xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d); 566 return (xfs_agblock_t) do_div(ld, mp->m_sb.sb_agblocks); 567} 568 569/* 570 * Per-cpu superblock locking functions 571 */ 572#ifdef HAVE_PERCPU_SB 573STATIC_INLINE void 574xfs_icsb_lock(xfs_mount_t *mp) 575{ 576 mutex_lock(&mp->m_icsb_mutex); 577} 578 579STATIC_INLINE void 580xfs_icsb_unlock(xfs_mount_t *mp) 581{ 582 mutex_unlock(&mp->m_icsb_mutex); 583} 584#else 585#define xfs_icsb_lock(mp) 586#define xfs_icsb_unlock(mp) 587#endif 588 589/* 590 * This structure is for use by the xfs_mod_incore_sb_batch() routine. 591 * xfs_growfs can specify a few fields which are more than int limit 592 */ 593typedef struct xfs_mod_sb { 594 xfs_sb_field_t msb_field; /* Field to modify, see below */ 595 int64_t msb_delta; /* Change to make to specified field */ 596} xfs_mod_sb_t; 597 598#define XFS_MOUNT_ILOCK(mp) mutex_lock(&((mp)->m_ilock)) 599#define XFS_MOUNT_IUNLOCK(mp) mutex_unlock(&((mp)->m_ilock)) 600#define XFS_SB_LOCK(mp) mutex_spinlock(&(mp)->m_sb_lock) 601#define XFS_SB_UNLOCK(mp,s) mutex_spinunlock(&(mp)->m_sb_lock,(s)) 602 603extern xfs_mount_t *xfs_mount_init(void); 604extern void xfs_mod_sb(xfs_trans_t *, __int64_t); 605extern void xfs_mount_free(xfs_mount_t *mp, int remove_bhv); 606extern int xfs_mountfs(struct bhv_vfs *, xfs_mount_t *mp, int); 607extern void xfs_mountfs_check_barriers(xfs_mount_t *mp); 608 609extern int xfs_unmountfs(xfs_mount_t *, struct cred *); 610extern void xfs_unmountfs_close(xfs_mount_t *, struct cred *); 611extern int xfs_unmountfs_writesb(xfs_mount_t *); 612extern int xfs_unmount_flush(xfs_mount_t *, int); 613extern int xfs_mod_incore_sb(xfs_mount_t *, xfs_sb_field_t, int64_t, int); 614extern int xfs_mod_incore_sb_unlocked(xfs_mount_t *, xfs_sb_field_t, 615 int64_t, int); 616extern int xfs_mod_incore_sb_batch(xfs_mount_t *, xfs_mod_sb_t *, 617 uint, int); 618extern struct xfs_buf *xfs_getsb(xfs_mount_t *, int); 619extern int xfs_readsb(xfs_mount_t *, int); 620extern void xfs_freesb(xfs_mount_t *); 621extern void xfs_do_force_shutdown(bhv_desc_t *, int, char *, int); 622extern int xfs_syncsub(xfs_mount_t *, int, int *); 623extern int xfs_sync_inodes(xfs_mount_t *, int, int *); 624extern xfs_agnumber_t xfs_initialize_perag(struct bhv_vfs *, xfs_mount_t *, 625 xfs_agnumber_t); 626extern void xfs_xlatesb(void *, struct xfs_sb *, int, __int64_t); 627 628extern struct xfs_dmops xfs_dmcore_stub; 629extern struct xfs_qmops xfs_qmcore_stub; 630extern struct xfs_ioops xfs_iocore_xfs; 631 632extern int xfs_init(void); 633extern void xfs_cleanup(void); 634 635#endif /* __KERNEL__ */ 636 637#endif /* __XFS_MOUNT_H__ */ 638