xfs_mount.h revision 180208
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 21typedef struct xfs_trans_reservations { 22 uint tr_write; /* extent alloc trans */ 23 uint tr_itruncate; /* truncate trans */ 24 uint tr_rename; /* rename trans */ 25 uint tr_link; /* link trans */ 26 uint tr_remove; /* unlink trans */ 27 uint tr_symlink; /* symlink trans */ 28 uint tr_create; /* create trans */ 29 uint tr_mkdir; /* mkdir trans */ 30 uint tr_ifree; /* inode free trans */ 31 uint tr_ichange; /* inode update trans */ 32 uint tr_growdata; /* fs data section grow trans */ 33 uint tr_swrite; /* sync write inode trans */ 34 uint tr_addafork; /* cvt inode to attributed trans */ 35 uint tr_writeid; /* write setuid/setgid file */ 36 uint tr_attrinval; /* attr fork buffer invalidation */ 37 uint tr_attrset; /* set/create an attribute */ 38 uint tr_attrrm; /* remove an attribute */ 39 uint tr_clearagi; /* clear bad agi unlinked ino bucket */ 40 uint tr_growrtalloc; /* grow realtime allocations */ 41 uint tr_growrtzero; /* grow realtime zeroing */ 42 uint tr_growrtfree; /* grow realtime freeing */ 43} xfs_trans_reservations_t; 44 45#ifndef __KERNEL__ 46/* 47 * Moved here from xfs_ag.h to avoid reordering header files 48 */ 49#define XFS_DADDR_TO_AGNO(mp,d) \ 50 ((xfs_agnumber_t)(XFS_BB_TO_FSBT(mp, d) / (mp)->m_sb.sb_agblocks)) 51#define XFS_DADDR_TO_AGBNO(mp,d) \ 52 ((xfs_agblock_t)(XFS_BB_TO_FSBT(mp, d) % (mp)->m_sb.sb_agblocks)) 53#else 54struct cred; 55struct log; 56struct xfs_vfs; 57struct xfs_vnode; 58struct xfs_mount_args; 59struct xfs_ihash; 60struct xfs_chash; 61struct xfs_inode; 62struct xfs_perag; 63struct xfs_iocore; 64struct xfs_bmbt_irec; 65struct xfs_bmap_free; 66struct xfs_extdelta; 67struct xfs_swapext; 68 69extern struct xvfsops xfs_vfsops; 70//extern struct xvnodeops xfs_vnodeops; 71 72#define AIL_LOCK_T lock_t 73#define AIL_LOCKINIT(x,y) spinlock_init(x,y) 74#define AIL_LOCK_DESTROY(x) spinlock_destroy(x) 75#define AIL_LOCK(mp,s) s=mutex_spinlock(&(mp)->m_ail_lock) 76#define AIL_UNLOCK(mp,s) mutex_spinunlock(&(mp)->m_ail_lock, s) 77 78 79/* 80 * Prototypes and functions for the Data Migration subsystem. 81 */ 82 83typedef int (*xfs_send_data_t)(int, struct xfs_vnode *, 84 xfs_off_t, size_t, int, vrwlock_t *); 85typedef int (*xfs_send_mmap_t)(void*, uint); 86typedef int (*xfs_send_destroy_t)(struct xfs_vnode *, dm_right_t); 87typedef int (*xfs_send_namesp_t)(dm_eventtype_t, struct xfs_vfs *, 88 struct xfs_vnode *, 89 dm_right_t, struct xfs_vnode *, dm_right_t, 90 char *, char *, mode_t, int, int); 91typedef void (*xfs_send_unmount_t)(struct xfs_vfs *, struct xfs_vnode *, 92 dm_right_t, mode_t, int, int); 93 94typedef struct xfs_dmops { 95 xfs_send_data_t xfs_send_data; 96 xfs_send_mmap_t xfs_send_mmap; 97 xfs_send_destroy_t xfs_send_destroy; 98 xfs_send_namesp_t xfs_send_namesp; 99 xfs_send_unmount_t xfs_send_unmount; 100} xfs_dmops_t; 101 102#define XFS_SEND_DATA(mp, ev,vp,off,len,fl,lock) \ 103 (*(mp)->m_dm_ops.xfs_send_data)(ev,vp,off,len,fl,lock) 104#define XFS_SEND_MMAP(mp, vma,fl) \ 105 (*(mp)->m_dm_ops.xfs_send_mmap)(vma,fl) 106#define XFS_SEND_DESTROY(mp, vp,right) \ 107 (*(mp)->m_dm_ops.xfs_send_destroy)(vp,right) 108#define XFS_SEND_NAMESP(mp, ev,b1,r1,b2,r2,n1,n2,mode,rval,fl) \ 109 (*(mp)->m_dm_ops.xfs_send_namesp)(ev,NULL,b1,r1,b2,r2,n1,n2,mode,rval,fl) 110#define XFS_SEND_PREUNMOUNT(mp, vfs,b1,r1,b2,r2,n1,n2,mode,rval,fl) \ 111 (*(mp)->m_dm_ops.xfs_send_namesp)(DM_EVENT_PREUNMOUNT,vfs,b1,r1,b2,r2,n1,n2,mode,rval,fl) 112#define XFS_SEND_UNMOUNT(mp, vfsp,vp,right,mode,rval,fl) \ 113 (*(mp)->m_dm_ops.xfs_send_unmount)(vfsp,vp,right,mode,rval,fl) 114 115 116/* 117 * Prototypes and functions for the Quota Management subsystem. 118 */ 119 120struct xfs_dquot; 121struct xfs_dqtrxops; 122struct xfs_quotainfo; 123 124typedef int (*xfs_qminit_t)(struct xfs_mount *, uint *, uint *); 125typedef int (*xfs_qmmount_t)(struct xfs_mount *, uint, uint, int); 126typedef int (*xfs_qmunmount_t)(struct xfs_mount *); 127typedef void (*xfs_qmdone_t)(struct xfs_mount *); 128typedef void (*xfs_dqrele_t)(struct xfs_dquot *); 129typedef int (*xfs_dqattach_t)(struct xfs_inode *, uint); 130typedef void (*xfs_dqdetach_t)(struct xfs_inode *); 131typedef int (*xfs_dqpurgeall_t)(struct xfs_mount *, uint); 132typedef int (*xfs_dqvopalloc_t)(struct xfs_mount *, 133 struct xfs_inode *, uid_t, gid_t, prid_t, uint, 134 struct xfs_dquot **, struct xfs_dquot **); 135typedef void (*xfs_dqvopcreate_t)(struct xfs_trans *, struct xfs_inode *, 136 struct xfs_dquot *, struct xfs_dquot *); 137typedef int (*xfs_dqvoprename_t)(struct xfs_inode **); 138typedef struct xfs_dquot * (*xfs_dqvopchown_t)( 139 struct xfs_trans *, struct xfs_inode *, 140 struct xfs_dquot **, struct xfs_dquot *); 141typedef int (*xfs_dqvopchownresv_t)(struct xfs_trans *, struct xfs_inode *, 142 struct xfs_dquot *, struct xfs_dquot *, uint); 143 144typedef struct xfs_qmops { 145 xfs_qminit_t xfs_qminit; 146 xfs_qmdone_t xfs_qmdone; 147 xfs_qmmount_t xfs_qmmount; 148 xfs_qmunmount_t xfs_qmunmount; 149 xfs_dqrele_t xfs_dqrele; 150 xfs_dqattach_t xfs_dqattach; 151 xfs_dqdetach_t xfs_dqdetach; 152 xfs_dqpurgeall_t xfs_dqpurgeall; 153 xfs_dqvopalloc_t xfs_dqvopalloc; 154 xfs_dqvopcreate_t xfs_dqvopcreate; 155 xfs_dqvoprename_t xfs_dqvoprename; 156 xfs_dqvopchown_t xfs_dqvopchown; 157 xfs_dqvopchownresv_t xfs_dqvopchownresv; 158 struct xfs_dqtrxops *xfs_dqtrxops; 159} xfs_qmops_t; 160 161#define XFS_QM_INIT(mp, mnt, fl) \ 162 (*(mp)->m_qm_ops.xfs_qminit)(mp, mnt, fl) 163#define XFS_QM_MOUNT(mp, mnt, fl, mfsi_flags) \ 164 (*(mp)->m_qm_ops.xfs_qmmount)(mp, mnt, fl, mfsi_flags) 165#define XFS_QM_UNMOUNT(mp) \ 166 (*(mp)->m_qm_ops.xfs_qmunmount)(mp) 167#define XFS_QM_DONE(mp) \ 168 (*(mp)->m_qm_ops.xfs_qmdone)(mp) 169#define XFS_QM_DQRELE(mp, dq) \ 170 (*(mp)->m_qm_ops.xfs_dqrele)(dq) 171#define XFS_QM_DQATTACH(mp, ip, fl) \ 172 (*(mp)->m_qm_ops.xfs_dqattach)(ip, fl) 173#define XFS_QM_DQDETACH(mp, ip) \ 174 (*(mp)->m_qm_ops.xfs_dqdetach)(ip) 175#define XFS_QM_DQPURGEALL(mp, fl) \ 176 (*(mp)->m_qm_ops.xfs_dqpurgeall)(mp, fl) 177#define XFS_QM_DQVOPALLOC(mp, ip, uid, gid, prid, fl, dq1, dq2) \ 178 (*(mp)->m_qm_ops.xfs_dqvopalloc)(mp, ip, uid, gid, prid, fl, dq1, dq2) 179#define XFS_QM_DQVOPCREATE(mp, tp, ip, dq1, dq2) \ 180 (*(mp)->m_qm_ops.xfs_dqvopcreate)(tp, ip, dq1, dq2) 181#define XFS_QM_DQVOPRENAME(mp, ip) \ 182 (*(mp)->m_qm_ops.xfs_dqvoprename)(ip) 183#define XFS_QM_DQVOPCHOWN(mp, tp, ip, dqp, dq) \ 184 (*(mp)->m_qm_ops.xfs_dqvopchown)(tp, ip, dqp, dq) 185#define XFS_QM_DQVOPCHOWNRESV(mp, tp, ip, dq1, dq2, fl) \ 186 (*(mp)->m_qm_ops.xfs_dqvopchownresv)(tp, ip, dq1, dq2, fl) 187 188 189/* 190 * Prototypes and functions for I/O core modularization. 191 */ 192 193typedef int (*xfs_ioinit_t)(struct xfs_vfs *, 194 struct xfs_mount_args *, int); 195typedef int (*xfs_bmapi_t)(struct xfs_trans *, void *, 196 xfs_fileoff_t, xfs_filblks_t, int, 197 xfs_fsblock_t *, xfs_extlen_t, 198 struct xfs_bmbt_irec *, int *, 199 struct xfs_bmap_free *, struct xfs_extdelta *); 200typedef int (*xfs_bunmapi_t)(struct xfs_trans *, 201 void *, xfs_fileoff_t, 202 xfs_filblks_t, int, xfs_extnum_t, 203 xfs_fsblock_t *, struct xfs_bmap_free *, 204 struct xfs_extdelta *, int *); 205typedef int (*xfs_bmap_eof_t)(void *, xfs_fileoff_t, int, int *); 206typedef int (*xfs_iomap_write_direct_t)( 207 void *, xfs_off_t, size_t, int, 208 struct xfs_bmbt_irec *, int *, int); 209typedef int (*xfs_iomap_write_delay_t)( 210 void *, xfs_off_t, size_t, int, 211 struct xfs_bmbt_irec *, int *); 212typedef int (*xfs_iomap_write_allocate_t)( 213 void *, xfs_off_t, size_t, 214 struct xfs_bmbt_irec *, int *); 215typedef int (*xfs_iomap_write_unwritten_t)( 216 void *, xfs_off_t, size_t); 217typedef uint (*xfs_lck_map_shared_t)(void *); 218typedef void (*xfs_lock_t)(void *, uint); 219typedef void (*xfs_lock_demote_t)(void *, uint); 220typedef int (*xfs_lock_nowait_t)(void *, uint); 221typedef void (*xfs_unlk_t)(void *, unsigned int); 222typedef xfs_fsize_t (*xfs_size_t)(void *); 223typedef xfs_fsize_t (*xfs_iodone_t)(struct xfs_vfs *); 224typedef int (*xfs_swap_extents_t)(void *, void *, 225 struct xfs_swapext*); 226 227typedef struct xfs_ioops { 228 xfs_ioinit_t xfs_ioinit; 229 xfs_bmapi_t xfs_bmapi_func; 230 xfs_bunmapi_t xfs_bunmapi_func; 231 xfs_bmap_eof_t xfs_bmap_eof_func; 232 xfs_iomap_write_direct_t xfs_iomap_write_direct; 233 xfs_iomap_write_delay_t xfs_iomap_write_delay; 234 xfs_iomap_write_allocate_t xfs_iomap_write_allocate; 235 xfs_iomap_write_unwritten_t xfs_iomap_write_unwritten; 236 xfs_lock_t xfs_ilock; 237 xfs_lck_map_shared_t xfs_lck_map_shared; 238 xfs_lock_demote_t xfs_ilock_demote; 239 xfs_lock_nowait_t xfs_ilock_nowait; 240 xfs_unlk_t xfs_unlock; 241 xfs_size_t xfs_size_func; 242 xfs_iodone_t xfs_iodone; 243 xfs_swap_extents_t xfs_swap_extents_func; 244} xfs_ioops_t; 245 246#define XFS_IOINIT(vfsp, args, flags) \ 247 (*(mp)->m_io_ops.xfs_ioinit)(vfsp, args, flags) 248#define XFS_BMAPI(mp, trans,io,bno,len,f,first,tot,mval,nmap,flist,delta) \ 249 (*(mp)->m_io_ops.xfs_bmapi_func) \ 250 (trans,(io)->io_obj,bno,len,f,first,tot,mval,nmap,flist,delta) 251#define XFS_BUNMAPI(mp, trans,io,bno,len,f,nexts,first,flist,delta,done) \ 252 (*(mp)->m_io_ops.xfs_bunmapi_func) \ 253 (trans,(io)->io_obj,bno,len,f,nexts,first,flist,delta,done) 254#define XFS_BMAP_EOF(mp, io, endoff, whichfork, eof) \ 255 (*(mp)->m_io_ops.xfs_bmap_eof_func) \ 256 ((io)->io_obj, endoff, whichfork, eof) 257#define XFS_IOMAP_WRITE_DIRECT(mp, io, offset, count, flags, mval, nmap, found)\ 258 (*(mp)->m_io_ops.xfs_iomap_write_direct) \ 259 ((io)->io_obj, offset, count, flags, mval, nmap, found) 260#define XFS_IOMAP_WRITE_DELAY(mp, io, offset, count, flags, mval, nmap) \ 261 (*(mp)->m_io_ops.xfs_iomap_write_delay) \ 262 ((io)->io_obj, offset, count, flags, mval, nmap) 263#define XFS_IOMAP_WRITE_ALLOCATE(mp, io, offset, count, mval, nmap) \ 264 (*(mp)->m_io_ops.xfs_iomap_write_allocate) \ 265 ((io)->io_obj, offset, count, mval, nmap) 266#define XFS_IOMAP_WRITE_UNWRITTEN(mp, io, offset, count) \ 267 (*(mp)->m_io_ops.xfs_iomap_write_unwritten) \ 268 ((io)->io_obj, offset, count) 269#define XFS_LCK_MAP_SHARED(mp, io) \ 270 (*(mp)->m_io_ops.xfs_lck_map_shared)((io)->io_obj) 271#define XFS_ILOCK(mp, io, mode) \ 272 (*(mp)->m_io_ops.xfs_ilock)((io)->io_obj, mode) 273#define XFS_ILOCK_NOWAIT(mp, io, mode) \ 274 (*(mp)->m_io_ops.xfs_ilock_nowait)((io)->io_obj, mode) 275#define XFS_IUNLOCK(mp, io, mode) \ 276 (*(mp)->m_io_ops.xfs_unlock)((io)->io_obj, mode) 277#define XFS_ILOCK_DEMOTE(mp, io, mode) \ 278 (*(mp)->m_io_ops.xfs_ilock_demote)((io)->io_obj, mode) 279#define XFS_SIZE(mp, io) \ 280 (*(mp)->m_io_ops.xfs_size_func)((io)->io_obj) 281#define XFS_IODONE(vfsp) \ 282 (*(mp)->m_io_ops.xfs_iodone)(vfsp) 283#define XFS_SWAP_EXTENTS(mp, io, tio, sxp) \ 284 (*(mp)->m_io_ops.xfs_swap_extents_func) \ 285 ((io)->io_obj, (tio)->io_obj, sxp) 286 287#ifdef HAVE_PERCPU_SB 288 289/* 290 * Valid per-cpu incore superblock counters. Note that if you add new counters, 291 * you may need to define new counter disabled bit field descriptors as there 292 * are more possible fields in the superblock that can fit in a bitfield on a 293 * 32 bit platform. The XFS_SBS_* values for the current current counters just 294 * fit. 295 */ 296typedef struct xfs_icsb_cnts { 297 uint64_t icsb_fdblocks; 298 uint64_t icsb_ifree; 299 uint64_t icsb_icount; 300 unsigned long icsb_flags; 301} xfs_icsb_cnts_t; 302 303#define XFS_ICSB_FLAG_LOCK (1 << 0) /* counter lock bit */ 304 305#define XFS_ICSB_SB_LOCKED (1 << 0) /* sb already locked */ 306#define XFS_ICSB_LAZY_COUNT (1 << 1) /* accuracy not needed */ 307 308extern int xfs_icsb_init_counters(struct xfs_mount *); 309extern void xfs_icsb_sync_counters_lazy(struct xfs_mount *); 310 311#else 312#define xfs_icsb_init_counters(mp) (0) 313#define xfs_icsb_sync_counters_lazy(mp) do { } while (0) 314#endif 315 316typedef struct xfs_mount { 317 bhv_desc_t m_bhv; /* vfs xfs behavior */ 318 xfs_tid_t m_tid; /* next unused tid for fs */ 319 AIL_LOCK_T m_ail_lock; /* fs AIL mutex */ 320 xfs_ail_entry_t m_ail; /* fs active log item list */ 321 uint m_ail_gen; /* fs AIL generation count */ 322 xfs_sb_t m_sb; /* copy of fs superblock */ 323 lock_t m_sb_lock; /* sb counter mutex */ 324 struct xfs_buf *m_sb_bp; /* buffer for superblock */ 325 char *m_fsname; /* filesystem name */ 326 int m_fsname_len; /* strlen of fs name */ 327 char *m_rtname; /* realtime device name */ 328 char *m_logname; /* external log device name */ 329 int m_bsize; /* fs logical block size */ 330 xfs_agnumber_t m_agfrotor; /* last ag where space found */ 331 xfs_agnumber_t m_agirotor; /* last ag dir inode alloced */ 332 lock_t m_agirotor_lock;/* .. and lock protecting it */ 333 xfs_agnumber_t m_maxagi; /* highest inode alloc group */ 334 uint m_ihsize; /* size of next field */ 335 struct xfs_ihash *m_ihash; /* fs private inode hash table*/ 336 struct xfs_inode *m_inodes; /* active inode list */ 337 TAILQ_HEAD(,xfs_inode) m_del_inodes; /* inodes to reclaim */ 338 // xfs_mutex_t m_ilock; /* inode list mutex */ 339 /* FreeBSD specfic */ 340 struct sx m_ilock; /* inode list mutex */ 341 uint m_ireclaims; /* count of calls to reclaim*/ 342 uint m_readio_log; /* min read size log bytes */ 343 uint m_readio_blocks; /* min read size blocks */ 344 uint m_writeio_log; /* min write size log bytes */ 345 uint m_writeio_blocks; /* min write size blocks */ 346 struct log *m_log; /* log specific stuff */ 347 int m_logbufs; /* number of log buffers */ 348 int m_logbsize; /* size of each log buffer */ 349 uint m_rsumlevels; /* rt summary levels */ 350 uint m_rsumsize; /* size of rt summary, bytes */ 351 struct xfs_inode *m_rbmip; /* pointer to bitmap inode */ 352 struct xfs_inode *m_rsumip; /* pointer to summary inode */ 353 struct xfs_inode *m_rootip; /* pointer to root directory */ 354 struct xfs_quotainfo *m_quotainfo; /* disk quota information */ 355 xfs_buftarg_t *m_ddev_targp; /* saves taking the address */ 356 xfs_buftarg_t *m_logdev_targp;/* ptr to log device */ 357 xfs_buftarg_t *m_rtdev_targp; /* ptr to rt device */ 358 __uint8_t m_dircook_elog; /* log d-cookie entry bits */ 359 __uint8_t m_blkbit_log; /* blocklog + NBBY */ 360 __uint8_t m_blkbb_log; /* blocklog - BBSHIFT */ 361 __uint8_t m_agno_log; /* log #ag's */ 362 __uint8_t m_agino_log; /* #bits for agino in inum */ 363 __uint8_t m_nreadaheads; /* #readahead buffers */ 364 __uint16_t m_inode_cluster_size;/* min inode buf size */ 365 uint m_blockmask; /* sb_blocksize-1 */ 366 uint m_blockwsize; /* sb_blocksize in words */ 367 uint m_blockwmask; /* blockwsize-1 */ 368 uint m_alloc_mxr[2]; /* XFS_ALLOC_BLOCK_MAXRECS */ 369 uint m_alloc_mnr[2]; /* XFS_ALLOC_BLOCK_MINRECS */ 370 uint m_bmap_dmxr[2]; /* XFS_BMAP_BLOCK_DMAXRECS */ 371 uint m_bmap_dmnr[2]; /* XFS_BMAP_BLOCK_DMINRECS */ 372 uint m_inobt_mxr[2]; /* XFS_INOBT_BLOCK_MAXRECS */ 373 uint m_inobt_mnr[2]; /* XFS_INOBT_BLOCK_MINRECS */ 374 uint m_ag_maxlevels; /* XFS_AG_MAXLEVELS */ 375 uint m_bm_maxlevels[2]; /* XFS_BM_MAXLEVELS */ 376 uint m_in_maxlevels; /* XFS_IN_MAXLEVELS */ 377 struct xfs_perag *m_perag; /* per-ag accounting info */ 378 struct rw_semaphore m_peraglock; /* lock for m_perag (pointer) */ 379 sema_t m_growlock; /* growfs mutex */ 380 int m_fixedfsid[2]; /* unchanged for life of FS */ 381 uint m_dmevmask; /* DMI events for this FS */ 382 __uint64_t m_flags; /* global mount flags */ 383 uint m_attroffset; /* inode attribute offset */ 384 uint m_dir_node_ents; /* #entries in a dir danode */ 385 uint m_attr_node_ents; /* #entries in attr danode */ 386 int m_ialloc_inos; /* inodes in inode allocation */ 387 int m_ialloc_blks; /* blocks in inode allocation */ 388 int m_litino; /* size of inode union area */ 389 int m_inoalign_mask;/* mask sb_inoalignmt if used */ 390 uint m_qflags; /* quota status flags */ 391 xfs_trans_reservations_t m_reservations;/* precomputed res values */ 392 __uint64_t m_maxicount; /* maximum inode count */ 393 __uint64_t m_maxioffset; /* maximum inode offset */ 394 __uint64_t m_resblks; /* total reserved blocks */ 395 __uint64_t m_resblks_avail;/* available reserved blocks */ 396#if XFS_BIG_INUMS 397 xfs_ino_t m_inoadd; /* add value for ino64_offset */ 398#endif 399 int m_dalign; /* stripe unit */ 400 int m_swidth; /* stripe width */ 401 int m_sinoalign; /* stripe unit inode alignment */ 402 int m_attr_magicpct;/* 37% of the blocksize */ 403 int m_dir_magicpct; /* 37% of the dir blocksize */ 404 __uint8_t m_mk_sharedro; /* mark shared ro on unmount */ 405 __uint8_t m_inode_quiesce;/* call quiesce on new inodes. 406 field governed by m_ilock */ 407 __uint8_t m_sectbb_log; /* sectlog - BBSHIFT */ 408 __uint8_t m_dirversion; /* 1 or 2 */ 409 xfs_dirops_t m_dirops; /* table of dir funcs */ 410 int m_dirblksize; /* directory block sz--bytes */ 411 int m_dirblkfsbs; /* directory block sz--fsbs */ 412 xfs_dablk_t m_dirdatablk; /* blockno of dir data v2 */ 413 xfs_dablk_t m_dirleafblk; /* blockno of dir non-data v2 */ 414 xfs_dablk_t m_dirfreeblk; /* blockno of dirfreeindex v2 */ 415 uint m_chsize; /* size of next field */ 416 struct xfs_chash *m_chash; /* fs private inode per-cluster 417 * hash table */ 418 struct xfs_dmops m_dm_ops; /* vector of DMI ops */ 419 struct xfs_qmops m_qm_ops; /* vector of XQM ops */ 420 struct xfs_ioops m_io_ops; /* vector of I/O ops */ 421 atomic_t m_active_trans; /* number trans frozen */ 422#ifdef HAVE_PERCPU_SB 423 xfs_icsb_cnts_t *m_sb_cnts; /* per-cpu superblock counters */ 424 unsigned long m_icsb_counters; /* disabled per-cpu counters */ 425 struct notifier_block m_icsb_notifier; /* hotplug cpu notifier */ 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 XVFS_FORCE_SHUTDOWN((XFS_MTOVFS(m)), f, __FILE__, __LINE__) 517 518/* 519 * Flags sent to xfs_force_shutdown. 520 */ 521#define XFS_METADATA_IO_ERROR 0x1 522#define XFS_LOG_IO_ERROR 0x2 523#define XFS_FORCE_UMOUNT 0x4 524#define XFS_CORRUPT_INCORE 0x8 /* Corrupt in-memory data structures */ 525#define XFS_SHUTDOWN_REMOTE_REQ 0x10 /* Shutdown came from remote cell */ 526 527/* 528 * Flags for xfs_mountfs 529 */ 530#define XFS_MFSI_SECOND 0x01 /* Secondary mount -- skip stuff */ 531#define XFS_MFSI_CLIENT 0x02 /* Is a client -- skip lots of stuff */ 532/* XFS_MFSI_RRINODES */ 533#define XFS_MFSI_NOUNLINK 0x08 /* Skip unlinked inode processing in */ 534 /* log recovery */ 535#define XFS_MFSI_NO_QUOTACHECK 0x10 /* Skip quotacheck processing */ 536/* XFS_MFSI_CONVERT_SUNIT */ 537#define XFS_MFSI_QUIET 0x40 /* Be silent if mount errors found */ 538 539/* 540 * Macros for getting from mount to vfs and back. 541 */ 542#define XFS_MTOVFS(mp) xfs_mtovfs(mp) 543static inline xfs_vfs_t *xfs_mtovfs(xfs_mount_t *mp) 544{ 545 return bhvtovfs(&mp->m_bhv); 546} 547 548#define XFS_BHVTOM(bdp) xfs_bhvtom(bdp) 549static inline xfs_mount_t *xfs_bhvtom(bhv_desc_t *bdp) 550{ 551 return (xfs_mount_t *)BHV_PDATA(bdp); 552} 553 554#define XFS_VFSTOM(vfs) xfs_vfstom(vfs) 555static inline xfs_mount_t *xfs_vfstom(xfs_vfs_t *vfs) 556{ 557 return XFS_BHVTOM(bhv_lookup(VFS_BHVHEAD(vfs), &xfs_vfsops)); 558} 559 560#define XFS_DADDR_TO_AGNO(mp,d) xfs_daddr_to_agno(mp,d) 561static inline xfs_agnumber_t 562xfs_daddr_to_agno(struct xfs_mount *mp, xfs_daddr_t d) 563{ 564 xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d); 565 do_div(ld, mp->m_sb.sb_agblocks); 566 return (xfs_agnumber_t) ld; 567} 568 569#define XFS_DADDR_TO_AGBNO(mp,d) xfs_daddr_to_agbno(mp,d) 570static inline xfs_agblock_t 571xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d) 572{ 573 xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d); 574 return (xfs_agblock_t) do_div(ld, mp->m_sb.sb_agblocks); 575} 576 577/* 578 * This structure is for use by the xfs_mod_incore_sb_batch() routine. 579 */ 580typedef struct xfs_mod_sb { 581 xfs_sb_field_t msb_field; /* Field to modify, see below */ 582 int msb_delta; /* Change to make to specified field */ 583} xfs_mod_sb_t; 584 585/* FreeBSD specfic */ 586#define XFS_MOUNT_ILOCK(mp) sx_xlock(&((mp)->m_ilock)) 587#define XFS_MOUNT_IUNLOCK(mp) sx_xunlock(&((mp)->m_ilock)) 588 589#define XFS_SB_LOCK(mp) mutex_spinlock(&(mp)->m_sb_lock) 590#define XFS_SB_UNLOCK(mp,s) mutex_spinunlock(&(mp)->m_sb_lock,(s)) 591 592extern xfs_mount_t *xfs_mount_init(void); 593extern void xfs_mod_sb(xfs_trans_t *, __int64_t); 594extern void xfs_mount_free(xfs_mount_t *mp, int remove_bhv); 595extern int xfs_mountfs(struct xfs_vfs *, xfs_mount_t *mp, int); 596extern void xfs_mountfs_check_barriers(xfs_mount_t *mp); 597 598extern int xfs_unmountfs(xfs_mount_t *, struct cred *); 599extern void xfs_unmountfs_close(xfs_mount_t *, struct cred *); 600extern int xfs_unmountfs_writesb(xfs_mount_t *); 601extern int xfs_unmount_flush(xfs_mount_t *, int); 602extern int xfs_mod_incore_sb(xfs_mount_t *, xfs_sb_field_t, int, int); 603extern int xfs_mod_incore_sb_unlocked(xfs_mount_t *, xfs_sb_field_t, 604 int, int); 605extern int xfs_mod_incore_sb_batch(xfs_mount_t *, xfs_mod_sb_t *, 606 uint, int); 607extern struct xfs_buf *xfs_getsb(xfs_mount_t *, int); 608extern int xfs_readsb(xfs_mount_t *, int); 609extern void xfs_freesb(xfs_mount_t *); 610extern void xfs_do_force_shutdown(bhv_desc_t *, int, char *, int); 611extern int xfs_syncsub(xfs_mount_t *, int, int, int *); 612extern int xfs_sync_inodes(xfs_mount_t *, int, int, int *); 613extern xfs_agnumber_t xfs_initialize_perag(struct xfs_vfs *, xfs_mount_t *, 614 xfs_agnumber_t); 615extern void xfs_xlatesb(void *, struct xfs_sb *, int, __int64_t); 616 617extern struct xfs_dmops xfs_dmcore_stub; 618extern struct xfs_qmops xfs_qmcore_stub; 619extern struct xfs_ioops xfs_iocore_xfs; 620 621extern int xfs_init(void); 622extern void xfs_cleanup(void); 623 624#endif /* __KERNEL__ */ 625 626#endif /* __XFS_MOUNT_H__ */ 627