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 typedef 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 54 struct cred; 55 struct log; 56 struct vfs; 57 struct vnode; 58 struct xfs_mount_args; 59 struct xfs_ihash; 60 struct xfs_chash; 61 struct xfs_inode; 62 struct xfs_perag; 63 struct xfs_iocore; 64 struct xfs_bmbt_irec; 65 struct xfs_bmap_free; 66 67 extern struct vfsops xfs_vfsops; 68 extern struct vnodeops xfs_vnodeops; 69 70 #define AIL_LOCK_T lock_t 71 #define AIL_LOCKINIT(x,y) spinlock_init(x,y) 72 #define AIL_LOCK_DESTROY(x) spinlock_destroy(x) 73 #define AIL_LOCK(mp,s) s=mutex_spinlock(&(mp)->m_ail_lock) 74 #define AIL_UNLOCK(mp,s) mutex_spinunlock(&(mp)->m_ail_lock, s) 75 76 77 /* 78 * Prototypes and functions for the Data Migration subsystem. 79 */ 80 81 typedef int (*xfs_send_data_t)(int, struct vnode *, 82 xfs_off_t, size_t, int, vrwlock_t *); 83 typedef int (*xfs_send_mmap_t)(struct vm_area_struct *, uint); 84 typedef int (*xfs_send_destroy_t)(struct vnode *, dm_right_t); 85 typedef int (*xfs_send_namesp_t)(dm_eventtype_t, struct vfs *, 86 struct vnode *, 87 dm_right_t, struct vnode *, dm_right_t, 88 char *, char *, mode_t, int, int); 89 typedef void (*xfs_send_unmount_t)(struct vfs *, struct vnode *, 90 dm_right_t, mode_t, int, int); 91 92 typedef struct xfs_dmops { 93 xfs_send_data_t xfs_send_data; 94 xfs_send_mmap_t xfs_send_mmap; 95 xfs_send_destroy_t xfs_send_destroy; 96 xfs_send_namesp_t xfs_send_namesp; 97 xfs_send_unmount_t xfs_send_unmount; 98 } xfs_dmops_t; 99 100 #define XFS_SEND_DATA(mp, ev,vp,off,len,fl,lock) \ 101 (*(mp)->m_dm_ops.xfs_send_data)(ev,vp,off,len,fl,lock) 102 #define XFS_SEND_MMAP(mp, vma,fl) \ 103 (*(mp)->m_dm_ops.xfs_send_mmap)(vma,fl) 104 #define XFS_SEND_DESTROY(mp, vp,right) \ 105 (*(mp)->m_dm_ops.xfs_send_destroy)(vp,right) 106 #define XFS_SEND_NAMESP(mp, ev,b1,r1,b2,r2,n1,n2,mode,rval,fl) \ 107 (*(mp)->m_dm_ops.xfs_send_namesp)(ev,NULL,b1,r1,b2,r2,n1,n2,mode,rval,fl) 108 #define XFS_SEND_PREUNMOUNT(mp, vfs,b1,r1,b2,r2,n1,n2,mode,rval,fl) \ 109 (*(mp)->m_dm_ops.xfs_send_namesp)(DM_EVENT_PREUNMOUNT,vfs,b1,r1,b2,r2,n1,n2,mode,rval,fl) 110 #define XFS_SEND_UNMOUNT(mp, vfsp,vp,right,mode,rval,fl) \ 111 (*(mp)->m_dm_ops.xfs_send_unmount)(vfsp,vp,right,mode,rval,fl) 112 113 114 /* 115 * Prototypes and functions for the Quota Management subsystem. 116 */ 117 118 struct xfs_dquot; 119 struct xfs_dqtrxops; 120 struct xfs_quotainfo; 121 122 typedef int (*xfs_qminit_t)(struct xfs_mount *, uint *, uint *); 123 typedef int (*xfs_qmmount_t)(struct xfs_mount *, uint, uint, int); 124 typedef int (*xfs_qmunmount_t)(struct xfs_mount *); 125 typedef void (*xfs_qmdone_t)(struct xfs_mount *); 126 typedef void (*xfs_dqrele_t)(struct xfs_dquot *); 127 typedef int (*xfs_dqattach_t)(struct xfs_inode *, uint); 128 typedef void (*xfs_dqdetach_t)(struct xfs_inode *); 129 typedef int (*xfs_dqpurgeall_t)(struct xfs_mount *, uint); 130 typedef int (*xfs_dqvopalloc_t)(struct xfs_mount *, 131 struct xfs_inode *, uid_t, gid_t, prid_t, uint, 132 struct xfs_dquot **, struct xfs_dquot **); 133 typedef void (*xfs_dqvopcreate_t)(struct xfs_trans *, struct xfs_inode *, 134 struct xfs_dquot *, struct xfs_dquot *); 135 typedef int (*xfs_dqvoprename_t)(struct xfs_inode **); 136 typedef struct xfs_dquot * (*xfs_dqvopchown_t)( 137 struct xfs_trans *, struct xfs_inode *, 138 struct xfs_dquot **, struct xfs_dquot *); 139 typedef int (*xfs_dqvopchownresv_t)(struct xfs_trans *, struct xfs_inode *, 140 struct xfs_dquot *, struct xfs_dquot *, uint); 141 142 typedef struct xfs_qmops { 143 xfs_qminit_t xfs_qminit; 144 xfs_qmdone_t xfs_qmdone; 145 xfs_qmmount_t xfs_qmmount; 146 xfs_qmunmount_t xfs_qmunmount; 147 xfs_dqrele_t xfs_dqrele; 148 xfs_dqattach_t xfs_dqattach; 149 xfs_dqdetach_t xfs_dqdetach; 150 xfs_dqpurgeall_t xfs_dqpurgeall; 151 xfs_dqvopalloc_t xfs_dqvopalloc; 152 xfs_dqvopcreate_t xfs_dqvopcreate; 153 xfs_dqvoprename_t xfs_dqvoprename; 154 xfs_dqvopchown_t xfs_dqvopchown; 155 xfs_dqvopchownresv_t xfs_dqvopchownresv; 156 struct xfs_dqtrxops *xfs_dqtrxops; 157 } xfs_qmops_t; 158 159 #define XFS_QM_INIT(mp, mnt, fl) \ 160 (*(mp)->m_qm_ops.xfs_qminit)(mp, mnt, fl) 161 #define XFS_QM_MOUNT(mp, mnt, fl, mfsi_flags) \ 162 (*(mp)->m_qm_ops.xfs_qmmount)(mp, mnt, fl, mfsi_flags) 163 #define XFS_QM_UNMOUNT(mp) \ 164 (*(mp)->m_qm_ops.xfs_qmunmount)(mp) 165 #define XFS_QM_DONE(mp) \ 166 (*(mp)->m_qm_ops.xfs_qmdone)(mp) 167 #define XFS_QM_DQRELE(mp, dq) \ 168 (*(mp)->m_qm_ops.xfs_dqrele)(dq) 169 #define XFS_QM_DQATTACH(mp, ip, fl) \ 170 (*(mp)->m_qm_ops.xfs_dqattach)(ip, fl) 171 #define XFS_QM_DQDETACH(mp, ip) \ 172 (*(mp)->m_qm_ops.xfs_dqdetach)(ip) 173 #define XFS_QM_DQPURGEALL(mp, fl) \ 174 (*(mp)->m_qm_ops.xfs_dqpurgeall)(mp, fl) 175 #define XFS_QM_DQVOPALLOC(mp, ip, uid, gid, prid, fl, dq1, dq2) \ 176 (*(mp)->m_qm_ops.xfs_dqvopalloc)(mp, ip, uid, gid, prid, fl, dq1, dq2) 177 #define XFS_QM_DQVOPCREATE(mp, tp, ip, dq1, dq2) \ 178 (*(mp)->m_qm_ops.xfs_dqvopcreate)(tp, ip, dq1, dq2) 179 #define XFS_QM_DQVOPRENAME(mp, ip) \ 180 (*(mp)->m_qm_ops.xfs_dqvoprename)(ip) 181 #define XFS_QM_DQVOPCHOWN(mp, tp, ip, dqp, dq) \ 182 (*(mp)->m_qm_ops.xfs_dqvopchown)(tp, ip, dqp, dq) 183 #define XFS_QM_DQVOPCHOWNRESV(mp, tp, ip, dq1, dq2, fl) \ 184 (*(mp)->m_qm_ops.xfs_dqvopchownresv)(tp, ip, dq1, dq2, fl) 185 186 187 /* 188 * Prototypes and functions for I/O core modularization. 189 */ 190 191 typedef int (*xfs_ioinit_t)(struct vfs *, 192 struct xfs_mount_args *, int); 193 typedef int (*xfs_bmapi_t)(struct xfs_trans *, void *, 194 xfs_fileoff_t, xfs_filblks_t, int, 195 xfs_fsblock_t *, xfs_extlen_t, 196 struct xfs_bmbt_irec *, int *, 197 struct xfs_bmap_free *); 198 typedef int (*xfs_bmap_eof_t)(void *, xfs_fileoff_t, int, int *); 199 typedef int (*xfs_iomap_write_direct_t)( 200 void *, xfs_off_t, size_t, int, 201 struct xfs_bmbt_irec *, int *, int); 202 typedef int (*xfs_iomap_write_delay_t)( 203 void *, xfs_off_t, size_t, int, 204 struct xfs_bmbt_irec *, int *); 205 typedef int (*xfs_iomap_write_allocate_t)( 206 void *, xfs_off_t, size_t, 207 struct xfs_bmbt_irec *, int *); 208 typedef int (*xfs_iomap_write_unwritten_t)( 209 void *, xfs_off_t, size_t); 210 typedef uint (*xfs_lck_map_shared_t)(void *); 211 typedef void (*xfs_lock_t)(void *, uint); 212 typedef void (*xfs_lock_demote_t)(void *, uint); 213 typedef int (*xfs_lock_nowait_t)(void *, uint); 214 typedef void (*xfs_unlk_t)(void *, unsigned int); 215 typedef xfs_fsize_t (*xfs_size_t)(void *); 216 typedef xfs_fsize_t (*xfs_iodone_t)(struct vfs *); 217 218 typedef struct xfs_ioops { 219 xfs_ioinit_t xfs_ioinit; 220 xfs_bmapi_t xfs_bmapi_func; 221 xfs_bmap_eof_t xfs_bmap_eof_func; 222 xfs_iomap_write_direct_t xfs_iomap_write_direct; 223 xfs_iomap_write_delay_t xfs_iomap_write_delay; 224 xfs_iomap_write_allocate_t xfs_iomap_write_allocate; 225 xfs_iomap_write_unwritten_t xfs_iomap_write_unwritten; 226 xfs_lock_t xfs_ilock; 227 xfs_lck_map_shared_t xfs_lck_map_shared; 228 xfs_lock_demote_t xfs_ilock_demote; 229 xfs_lock_nowait_t xfs_ilock_nowait; 230 xfs_unlk_t xfs_unlock; 231 xfs_size_t xfs_size_func; 232 xfs_iodone_t xfs_iodone; 233 } xfs_ioops_t; 234 235 #define XFS_IOINIT(vfsp, args, flags) \ 236 (*(mp)->m_io_ops.xfs_ioinit)(vfsp, args, flags) 237 #define XFS_BMAPI(mp, trans,io,bno,len,f,first,tot,mval,nmap,flist) \ 238 (*(mp)->m_io_ops.xfs_bmapi_func) \ 239 (trans,(io)->io_obj,bno,len,f,first,tot,mval,nmap,flist) 240 #define XFS_BMAP_EOF(mp, io, endoff, whichfork, eof) \ 241 (*(mp)->m_io_ops.xfs_bmap_eof_func) \ 242 ((io)->io_obj, endoff, whichfork, eof) 243 #define XFS_IOMAP_WRITE_DIRECT(mp, io, offset, count, flags, mval, nmap, found)\ 244 (*(mp)->m_io_ops.xfs_iomap_write_direct) \ 245 ((io)->io_obj, offset, count, flags, mval, nmap, found) 246 #define XFS_IOMAP_WRITE_DELAY(mp, io, offset, count, flags, mval, nmap) \ 247 (*(mp)->m_io_ops.xfs_iomap_write_delay) \ 248 ((io)->io_obj, offset, count, flags, mval, nmap) 249 #define XFS_IOMAP_WRITE_ALLOCATE(mp, io, offset, count, mval, nmap) \ 250 (*(mp)->m_io_ops.xfs_iomap_write_allocate) \ 251 ((io)->io_obj, offset, count, mval, nmap) 252 #define XFS_IOMAP_WRITE_UNWRITTEN(mp, io, offset, count) \ 253 (*(mp)->m_io_ops.xfs_iomap_write_unwritten) \ 254 ((io)->io_obj, offset, count) 255 #define XFS_LCK_MAP_SHARED(mp, io) \ 256 (*(mp)->m_io_ops.xfs_lck_map_shared)((io)->io_obj) 257 #define XFS_ILOCK(mp, io, mode) \ 258 (*(mp)->m_io_ops.xfs_ilock)((io)->io_obj, mode) 259 #define XFS_ILOCK_NOWAIT(mp, io, mode) \ 260 (*(mp)->m_io_ops.xfs_ilock_nowait)((io)->io_obj, mode) 261 #define XFS_IUNLOCK(mp, io, mode) \ 262 (*(mp)->m_io_ops.xfs_unlock)((io)->io_obj, mode) 263 #define XFS_ILOCK_DEMOTE(mp, io, mode) \ 264 (*(mp)->m_io_ops.xfs_ilock_demote)((io)->io_obj, mode) 265 #define XFS_SIZE(mp, io) \ 266 (*(mp)->m_io_ops.xfs_size_func)((io)->io_obj) 267 #define XFS_IODONE(vfsp) \ 268 (*(mp)->m_io_ops.xfs_iodone)(vfsp) 269 270 #ifdef HAVE_PERCPU_SB 271 272 /* 273 * Valid per-cpu incore superblock counters. Note that if you add new counters, 274 * you may need to define new counter disabled bit field descriptors as there 275 * are more possible fields in the superblock that can fit in a bitfield on a 276 * 32 bit platform. The XFS_SBS_* values for the current current counters just 277 * fit. 278 */ 279 typedef struct xfs_icsb_cnts { 280 uint64_t icsb_fdblocks; 281 uint64_t icsb_ifree; 282 uint64_t icsb_icount; 283 unsigned long icsb_flags; 284 } xfs_icsb_cnts_t; 285 286 #define XFS_ICSB_FLAG_LOCK (1 << 0) /* counter lock bit */ 287 288 #define XFS_ICSB_SB_LOCKED (1 << 0) /* sb already locked */ 289 #define XFS_ICSB_LAZY_COUNT (1 << 1) /* accuracy not needed */ 290 291 extern int xfs_icsb_init_counters(struct xfs_mount *); 292 extern void xfs_icsb_sync_counters_lazy(struct xfs_mount *); 293 294 #else 295 #define xfs_icsb_init_counters(mp) (0) 296 #define xfs_icsb_sync_counters_lazy(mp) do { } while (0) 297 #endif 298 299 typedef struct xfs_mount { 300 bhv_desc_t m_bhv; /* vfs xfs behavior */ 301 xfs_tid_t m_tid; /* next unused tid for fs */ 302 AIL_LOCK_T m_ail_lock; /* fs AIL mutex */ 303 xfs_ail_entry_t m_ail; /* fs active log item list */ 304 uint m_ail_gen; /* fs AIL generation count */ 305 xfs_sb_t m_sb; /* copy of fs superblock */ 306 lock_t m_sb_lock; /* sb counter mutex */ 307 struct xfs_buf *m_sb_bp; /* buffer for superblock */ 308 char *m_fsname; /* filesystem name */ 309 int m_fsname_len; /* strlen of fs name */ 310 char *m_rtname; /* realtime device name */ 311 char *m_logname; /* external log device name */ 312 int m_bsize; /* fs logical block size */ 313 xfs_agnumber_t m_agfrotor; /* last ag where space found */ 314 xfs_agnumber_t m_agirotor; /* last ag dir inode alloced */ 315 lock_t m_agirotor_lock;/* .. and lock protecting it */ 316 xfs_agnumber_t m_maxagi; /* highest inode alloc group */ 317 uint m_ihsize; /* size of next field */ 318 struct xfs_ihash *m_ihash; /* fs private inode hash table*/ 319 struct xfs_inode *m_inodes; /* active inode list */ 320 struct list_head m_del_inodes; /* inodes to reclaim */ 321 mutex_t m_ilock; /* inode list mutex */ 322 uint m_ireclaims; /* count of calls to reclaim*/ 323 uint m_readio_log; /* min read size log bytes */ 324 uint m_readio_blocks; /* min read size blocks */ 325 uint m_writeio_log; /* min write size log bytes */ 326 uint m_writeio_blocks; /* min write size blocks */ 327 struct log *m_log; /* log specific stuff */ 328 int m_logbufs; /* number of log buffers */ 329 int m_logbsize; /* size of each log buffer */ 330 uint m_rsumlevels; /* rt summary levels */ 331 uint m_rsumsize; /* size of rt summary, bytes */ 332 struct xfs_inode *m_rbmip; /* pointer to bitmap inode */ 333 struct xfs_inode *m_rsumip; /* pointer to summary inode */ 334 struct xfs_inode *m_rootip; /* pointer to root directory */ 335 struct xfs_quotainfo *m_quotainfo; /* disk quota information */ 336 xfs_buftarg_t *m_ddev_targp; /* saves taking the address */ 337 xfs_buftarg_t *m_logdev_targp;/* ptr to log device */ 338 xfs_buftarg_t *m_rtdev_targp; /* ptr to rt device */ 339 __uint8_t m_dircook_elog; /* log d-cookie entry bits */ 340 __uint8_t m_blkbit_log; /* blocklog + NBBY */ 341 __uint8_t m_blkbb_log; /* blocklog - BBSHIFT */ 342 __uint8_t m_agno_log; /* log #ag's */ 343 __uint8_t m_agino_log; /* #bits for agino in inum */ 344 __uint8_t m_nreadaheads; /* #readahead buffers */ 345 __uint16_t m_inode_cluster_size;/* min inode buf size */ 346 uint m_blockmask; /* sb_blocksize-1 */ 347 uint m_blockwsize; /* sb_blocksize in words */ 348 uint m_blockwmask; /* blockwsize-1 */ 349 uint m_alloc_mxr[2]; /* XFS_ALLOC_BLOCK_MAXRECS */ 350 uint m_alloc_mnr[2]; /* XFS_ALLOC_BLOCK_MINRECS */ 351 uint m_bmap_dmxr[2]; /* XFS_BMAP_BLOCK_DMAXRECS */ 352 uint m_bmap_dmnr[2]; /* XFS_BMAP_BLOCK_DMINRECS */ 353 uint m_inobt_mxr[2]; /* XFS_INOBT_BLOCK_MAXRECS */ 354 uint m_inobt_mnr[2]; /* XFS_INOBT_BLOCK_MINRECS */ 355 uint m_ag_maxlevels; /* XFS_AG_MAXLEVELS */ 356 uint m_bm_maxlevels[2]; /* XFS_BM_MAXLEVELS */ 357 uint m_in_maxlevels; /* XFS_IN_MAXLEVELS */ 358 struct xfs_perag *m_perag; /* per-ag accounting info */ 359 struct rw_semaphore m_peraglock; /* lock for m_perag (pointer) */ 360 sema_t m_growlock; /* growfs mutex */ 361 int m_fixedfsid[2]; /* unchanged for life of FS */ 362 uint m_dmevmask; /* DMI events for this FS */ 363 __uint64_t m_flags; /* global mount flags */ 364 uint m_attroffset; /* inode attribute offset */ 365 uint m_dir_node_ents; /* #entries in a dir danode */ 366 uint m_attr_node_ents; /* #entries in attr danode */ 367 int m_ialloc_inos; /* inodes in inode allocation */ 368 int m_ialloc_blks; /* blocks in inode allocation */ 369 int m_litino; /* size of inode union area */ 370 int m_inoalign_mask;/* mask sb_inoalignmt if used */ 371 uint m_qflags; /* quota status flags */ 372 xfs_trans_reservations_t m_reservations;/* precomputed res values */ 373 __uint64_t m_maxicount; /* maximum inode count */ 374 __uint64_t m_maxioffset; /* maximum inode offset */ 375 __uint64_t m_resblks; /* total reserved blocks */ 376 __uint64_t m_resblks_avail;/* available reserved blocks */ 377 #if XFS_BIG_INUMS 378 xfs_ino_t m_inoadd; /* add value for ino64_offset */ 379 #endif 380 int m_dalign; /* stripe unit */ 381 int m_swidth; /* stripe width */ 382 int m_sinoalign; /* stripe unit inode alignment */ 383 int m_attr_magicpct;/* 37% of the blocksize */ 384 int m_dir_magicpct; /* 37% of the dir blocksize */ 385 __uint8_t m_mk_sharedro; /* mark shared ro on unmount */ 386 __uint8_t m_inode_quiesce;/* call quiesce on new inodes. 387 field governed by m_ilock */ 388 __uint8_t m_sectbb_log; /* sectlog - BBSHIFT */ 389 __uint8_t m_dirversion; /* 1 or 2 */ 390 xfs_dirops_t m_dirops; /* table of dir funcs */ 391 int m_dirblksize; /* directory block sz--bytes */ 392 int m_dirblkfsbs; /* directory block sz--fsbs */ 393 xfs_dablk_t m_dirdatablk; /* blockno of dir data v2 */ 394 xfs_dablk_t m_dirleafblk; /* blockno of dir non-data v2 */ 395 xfs_dablk_t m_dirfreeblk; /* blockno of dirfreeindex v2 */ 396 uint m_chsize; /* size of next field */ 397 struct xfs_chash *m_chash; /* fs private inode per-cluster 398 * hash table */ 399 struct xfs_dmops m_dm_ops; /* vector of DMI ops */ 400 struct xfs_qmops m_qm_ops; /* vector of XQM ops */ 401 struct xfs_ioops m_io_ops; /* vector of I/O ops */ 402 atomic_t m_active_trans; /* number trans frozen */ 403 #ifdef HAVE_PERCPU_SB 404 xfs_icsb_cnts_t *m_sb_cnts; /* per-cpu superblock counters */ 405 unsigned long m_icsb_counters; /* disabled per-cpu counters */ 406 struct notifier_block m_icsb_notifier; /* hotplug cpu notifier */ 407 #endif 408 } xfs_mount_t; 409 410 /* 411 * Flags for m_flags. 412 */ 413 #define XFS_MOUNT_WSYNC (1ULL << 0) /* for nfs - all metadata ops 414 must be synchronous except 415 for space allocations */ 416 #define XFS_MOUNT_INO64 (1ULL << 1) 417 /* (1ULL << 2) -- currently unused */ 418 /* (1ULL << 3) -- currently unused */ 419 #define XFS_MOUNT_FS_SHUTDOWN (1ULL << 4) /* atomic stop of all filesystem 420 operations, typically for 421 disk errors in metadata */ 422 #define XFS_MOUNT_RETERR (1ULL << 6) /* return alignment errors to 423 user */ 424 #define XFS_MOUNT_NOALIGN (1ULL << 7) /* turn off stripe alignment 425 allocations */ 426 #define XFS_MOUNT_ATTR2 (1ULL << 8) /* allow use of attr2 format */ 427 /* (1ULL << 9) -- currently unused */ 428 #define XFS_MOUNT_NORECOVERY (1ULL << 10) /* no recovery - dirty fs */ 429 #define XFS_MOUNT_SHARED (1ULL << 11) /* shared mount */ 430 #define XFS_MOUNT_DFLT_IOSIZE (1ULL << 12) /* set default i/o size */ 431 #define XFS_MOUNT_OSYNCISOSYNC (1ULL << 13) /* o_sync is REALLY o_sync */ 432 /* osyncisdsync is now default*/ 433 #define XFS_MOUNT_32BITINODES (1ULL << 14) /* do not create inodes above 434 * 32 bits in size */ 435 /* (1ULL << 15) -- currently unused */ 436 #define XFS_MOUNT_NOUUID (1ULL << 16) /* ignore uuid during mount */ 437 #define XFS_MOUNT_BARRIER (1ULL << 17) 438 #define XFS_MOUNT_IDELETE (1ULL << 18) /* delete empty inode clusters*/ 439 #define XFS_MOUNT_SWALLOC (1ULL << 19) /* turn on stripe width 440 * allocation */ 441 #define XFS_MOUNT_IHASHSIZE (1ULL << 20) /* inode hash table size */ 442 #define XFS_MOUNT_DIRSYNC (1ULL << 21) /* synchronous directory ops */ 443 #define XFS_MOUNT_COMPAT_IOSIZE (1ULL << 22) /* don't report large preferred 444 * I/O size in stat() */ 445 #define XFS_MOUNT_NO_PERCPU_SB (1ULL << 23) /* don't use per-cpu superblock 446 counters */ 447 448 449 /* 450 * Default minimum read and write sizes. 451 */ 452 #define XFS_READIO_LOG_LARGE 16 453 #define XFS_WRITEIO_LOG_LARGE 16 454 455 /* 456 * Max and min values for mount-option defined I/O 457 * preallocation sizes. 458 */ 459 #define XFS_MAX_IO_LOG 30 /* 1G */ 460 #define XFS_MIN_IO_LOG PAGE_SHIFT 461 462 /* 463 * Synchronous read and write sizes. This should be 464 * better for NFSv2 wsync filesystems. 465 */ 466 #define XFS_WSYNC_READIO_LOG 15 /* 32K */ 467 #define XFS_WSYNC_WRITEIO_LOG 14 /* 16K */ 468 469 /* 470 * Allow large block sizes to be reported to userspace programs if the 471 * "largeio" mount option is used. 472 * 473 * If compatibility mode is specified, simply return the basic unit of caching 474 * so that we don't get inefficient read/modify/write I/O from user apps. 475 * Otherwise.... 476 * 477 * If the underlying volume is a stripe, then return the stripe width in bytes 478 * as the recommended I/O size. It is not a stripe and we've set a default 479 * buffered I/O size, return that, otherwise return the compat default. 480 */ 481 static inline unsigned long 482 xfs_preferred_iosize(xfs_mount_t *mp) 483 { 484 if (mp->m_flags & XFS_MOUNT_COMPAT_IOSIZE) 485 return PAGE_CACHE_SIZE; 486 return (mp->m_swidth ? 487 (mp->m_swidth << mp->m_sb.sb_blocklog) : 488 ((mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) ? 489 (1 << (int)MAX(mp->m_readio_log, mp->m_writeio_log)) : 490 PAGE_CACHE_SIZE)); 491 } 492 493 #define XFS_MAXIOFFSET(mp) ((mp)->m_maxioffset) 494 495 #define XFS_FORCED_SHUTDOWN(mp) ((mp)->m_flags & XFS_MOUNT_FS_SHUTDOWN) 496 #define xfs_force_shutdown(m,f) \ 497 VFS_FORCE_SHUTDOWN((XFS_MTOVFS(m)), f, __FILE__, __LINE__) 498 499 /* 500 * Flags sent to xfs_force_shutdown. 501 */ 502 #define XFS_METADATA_IO_ERROR 0x1 503 #define XFS_LOG_IO_ERROR 0x2 504 #define XFS_FORCE_UMOUNT 0x4 505 #define XFS_CORRUPT_INCORE 0x8 /* Corrupt in-memory data structures */ 506 #define XFS_SHUTDOWN_REMOTE_REQ 0x10 /* Shutdown came from remote cell */ 507 508 /* 509 * Flags for xfs_mountfs 510 */ 511 #define XFS_MFSI_SECOND 0x01 /* Secondary mount -- skip stuff */ 512 #define XFS_MFSI_CLIENT 0x02 /* Is a client -- skip lots of stuff */ 513 /* XFS_MFSI_RRINODES */ 514 #define XFS_MFSI_NOUNLINK 0x08 /* Skip unlinked inode processing in */ 515 /* log recovery */ 516 #define XFS_MFSI_NO_QUOTACHECK 0x10 /* Skip quotacheck processing */ 517 /* XFS_MFSI_CONVERT_SUNIT */ 518 #define XFS_MFSI_QUIET 0x40 /* Be silent if mount errors found */ 519 520 /* 521 * Macros for getting from mount to vfs and back. 522 */ 523 #define XFS_MTOVFS(mp) xfs_mtovfs(mp) 524 static inline struct vfs *xfs_mtovfs(xfs_mount_t *mp) 525 { 526 return bhvtovfs(&mp->m_bhv); 527 } 528 529 #define XFS_BHVTOM(bdp) xfs_bhvtom(bdp) 530 static inline xfs_mount_t *xfs_bhvtom(bhv_desc_t *bdp) 531 { 532 return (xfs_mount_t *)BHV_PDATA(bdp); 533 } 534 535 #define XFS_VFSTOM(vfs) xfs_vfstom(vfs) 536 static inline xfs_mount_t *xfs_vfstom(vfs_t *vfs) 537 { 538 return XFS_BHVTOM(bhv_lookup(VFS_BHVHEAD(vfs), &xfs_vfsops)); 539 } 540 541 #define XFS_DADDR_TO_AGNO(mp,d) xfs_daddr_to_agno(mp,d) 542 static inline xfs_agnumber_t 543 xfs_daddr_to_agno(struct xfs_mount *mp, xfs_daddr_t d) 544 { 545 xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d); 546 do_div(ld, mp->m_sb.sb_agblocks); 547 return (xfs_agnumber_t) ld; 548 } 549 550 #define XFS_DADDR_TO_AGBNO(mp,d) xfs_daddr_to_agbno(mp,d) 551 static inline xfs_agblock_t 552 xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d) 553 { 554 xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d); 555 return (xfs_agblock_t) do_div(ld, mp->m_sb.sb_agblocks); 556 } 557 558 /* 559 * This structure is for use by the xfs_mod_incore_sb_batch() routine. 560 */ 561 typedef struct xfs_mod_sb { 562 xfs_sb_field_t msb_field; /* Field to modify, see below */ 563 int msb_delta; /* Change to make to specified field */ 564 } xfs_mod_sb_t; 565 566 #define XFS_MOUNT_ILOCK(mp) mutex_lock(&((mp)->m_ilock)) 567 #define XFS_MOUNT_IUNLOCK(mp) mutex_unlock(&((mp)->m_ilock)) 568 #define XFS_SB_LOCK(mp) mutex_spinlock(&(mp)->m_sb_lock) 569 #define XFS_SB_UNLOCK(mp,s) mutex_spinunlock(&(mp)->m_sb_lock,(s)) 570 571 extern xfs_mount_t *xfs_mount_init(void); 572 extern void xfs_mod_sb(xfs_trans_t *, __int64_t); 573 extern void xfs_mount_free(xfs_mount_t *mp, int remove_bhv); 574 extern int xfs_mountfs(struct vfs *, xfs_mount_t *mp, int); 575 extern void xfs_mountfs_check_barriers(xfs_mount_t *mp); 576 577 extern int xfs_unmountfs(xfs_mount_t *, struct cred *); 578 extern void xfs_unmountfs_close(xfs_mount_t *, struct cred *); 579 extern int xfs_unmountfs_writesb(xfs_mount_t *); 580 extern int xfs_unmount_flush(xfs_mount_t *, int); 581 extern int xfs_mod_incore_sb(xfs_mount_t *, xfs_sb_field_t, int, int); 582 extern int xfs_mod_incore_sb_unlocked(xfs_mount_t *, xfs_sb_field_t, 583 int, int); 584 extern int xfs_mod_incore_sb_batch(xfs_mount_t *, xfs_mod_sb_t *, 585 uint, int); 586 extern struct xfs_buf *xfs_getsb(xfs_mount_t *, int); 587 extern int xfs_readsb(xfs_mount_t *, int); 588 extern void xfs_freesb(xfs_mount_t *); 589 extern void xfs_do_force_shutdown(bhv_desc_t *, int, char *, int); 590 extern int xfs_syncsub(xfs_mount_t *, int, int, int *); 591 extern int xfs_sync_inodes(xfs_mount_t *, int, int, int *); 592 extern xfs_agnumber_t xfs_initialize_perag(struct vfs *, xfs_mount_t *, 593 xfs_agnumber_t); 594 extern void xfs_xlatesb(void *, struct xfs_sb *, int, __int64_t); 595 596 extern struct xfs_dmops xfs_dmcore_stub; 597 extern struct xfs_qmops xfs_qmcore_stub; 598 extern struct xfs_ioops xfs_iocore_xfs; 599 600 extern int xfs_init(void); 601 extern void xfs_cleanup(void); 602 603 #endif /* __KERNEL__ */ 604 605 #endif /* __XFS_MOUNT_H__ */ 606