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 22 typedef 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 55 struct cred; 56 struct log; 57 struct xfs_mount_args; 58 struct xfs_inode; 59 struct xfs_bmbt_irec; 60 struct xfs_bmap_free; 61 struct xfs_extdelta; 62 struct xfs_swapext; 63 struct xfs_mru_cache; 64 65 /* 66 * Prototypes and functions for the Data Migration subsystem. 67 */ 68 69 typedef int (*xfs_send_data_t)(int, struct xfs_inode *, 70 xfs_off_t, size_t, int, int *); 71 typedef int (*xfs_send_mmap_t)(struct vm_area_struct *, uint); 72 typedef int (*xfs_send_destroy_t)(struct xfs_inode *, dm_right_t); 73 typedef int (*xfs_send_namesp_t)(dm_eventtype_t, struct xfs_mount *, 74 struct xfs_inode *, dm_right_t, 75 struct xfs_inode *, dm_right_t, 76 const char *, const char *, mode_t, int, int); 77 typedef int (*xfs_send_mount_t)(struct xfs_mount *, dm_right_t, 78 char *, char *); 79 typedef void (*xfs_send_unmount_t)(struct xfs_mount *, struct xfs_inode *, 80 dm_right_t, mode_t, int, int); 81 82 typedef struct xfs_dmops { 83 xfs_send_data_t xfs_send_data; 84 xfs_send_mmap_t xfs_send_mmap; 85 xfs_send_destroy_t xfs_send_destroy; 86 xfs_send_namesp_t xfs_send_namesp; 87 xfs_send_mount_t xfs_send_mount; 88 xfs_send_unmount_t xfs_send_unmount; 89 } xfs_dmops_t; 90 91 #define XFS_SEND_DATA(mp, ev,ip,off,len,fl,lock) \ 92 (*(mp)->m_dm_ops->xfs_send_data)(ev,ip,off,len,fl,lock) 93 #define XFS_SEND_MMAP(mp, vma,fl) \ 94 (*(mp)->m_dm_ops->xfs_send_mmap)(vma,fl) 95 #define XFS_SEND_DESTROY(mp, ip,right) \ 96 (*(mp)->m_dm_ops->xfs_send_destroy)(ip,right) 97 #define XFS_SEND_NAMESP(mp, ev,b1,r1,b2,r2,n1,n2,mode,rval,fl) \ 98 (*(mp)->m_dm_ops->xfs_send_namesp)(ev,NULL,b1,r1,b2,r2,n1,n2,mode,rval,fl) 99 #define XFS_SEND_PREUNMOUNT(mp,b1,r1,b2,r2,n1,n2,mode,rval,fl) \ 100 (*(mp)->m_dm_ops->xfs_send_namesp)(DM_EVENT_PREUNMOUNT,mp,b1,r1,b2,r2,n1,n2,mode,rval,fl) 101 #define XFS_SEND_MOUNT(mp,right,path,name) \ 102 (*(mp)->m_dm_ops->xfs_send_mount)(mp,right,path,name) 103 #define XFS_SEND_UNMOUNT(mp, ip,right,mode,rval,fl) \ 104 (*(mp)->m_dm_ops->xfs_send_unmount)(mp,ip,right,mode,rval,fl) 105 106 107 /* 108 * Prototypes and functions for the Quota Management subsystem. 109 */ 110 111 struct xfs_dquot; 112 struct xfs_dqtrxops; 113 struct xfs_quotainfo; 114 115 typedef int (*xfs_qminit_t)(struct xfs_mount *, uint *, uint *); 116 typedef int (*xfs_qmmount_t)(struct xfs_mount *, uint, uint, int); 117 typedef int (*xfs_qmunmount_t)(struct xfs_mount *); 118 typedef void (*xfs_qmdone_t)(struct xfs_mount *); 119 typedef void (*xfs_dqrele_t)(struct xfs_dquot *); 120 typedef int (*xfs_dqattach_t)(struct xfs_inode *, uint); 121 typedef void (*xfs_dqdetach_t)(struct xfs_inode *); 122 typedef int (*xfs_dqpurgeall_t)(struct xfs_mount *, uint); 123 typedef int (*xfs_dqvopalloc_t)(struct xfs_mount *, 124 struct xfs_inode *, uid_t, gid_t, prid_t, uint, 125 struct xfs_dquot **, struct xfs_dquot **); 126 typedef void (*xfs_dqvopcreate_t)(struct xfs_trans *, struct xfs_inode *, 127 struct xfs_dquot *, struct xfs_dquot *); 128 typedef int (*xfs_dqvoprename_t)(struct xfs_inode **); 129 typedef struct xfs_dquot * (*xfs_dqvopchown_t)( 130 struct xfs_trans *, struct xfs_inode *, 131 struct xfs_dquot **, struct xfs_dquot *); 132 typedef int (*xfs_dqvopchownresv_t)(struct xfs_trans *, struct xfs_inode *, 133 struct xfs_dquot *, struct xfs_dquot *, uint); 134 typedef void (*xfs_dqstatvfs_t)(struct xfs_inode *, bhv_statvfs_t *); 135 typedef int (*xfs_dqsync_t)(struct xfs_mount *, int flags); 136 typedef int (*xfs_quotactl_t)(struct xfs_mount *, int, int, xfs_caddr_t); 137 138 typedef struct xfs_qmops { 139 xfs_qminit_t xfs_qminit; 140 xfs_qmdone_t xfs_qmdone; 141 xfs_qmmount_t xfs_qmmount; 142 xfs_qmunmount_t xfs_qmunmount; 143 xfs_dqrele_t xfs_dqrele; 144 xfs_dqattach_t xfs_dqattach; 145 xfs_dqdetach_t xfs_dqdetach; 146 xfs_dqpurgeall_t xfs_dqpurgeall; 147 xfs_dqvopalloc_t xfs_dqvopalloc; 148 xfs_dqvopcreate_t xfs_dqvopcreate; 149 xfs_dqvoprename_t xfs_dqvoprename; 150 xfs_dqvopchown_t xfs_dqvopchown; 151 xfs_dqvopchownresv_t xfs_dqvopchownresv; 152 xfs_dqstatvfs_t xfs_dqstatvfs; 153 xfs_dqsync_t xfs_dqsync; 154 xfs_quotactl_t xfs_quotactl; 155 struct xfs_dqtrxops *xfs_dqtrxops; 156 } xfs_qmops_t; 157 158 #define XFS_QM_INIT(mp, mnt, fl) \ 159 (*(mp)->m_qm_ops->xfs_qminit)(mp, mnt, fl) 160 #define XFS_QM_MOUNT(mp, mnt, fl, mfsi_flags) \ 161 (*(mp)->m_qm_ops->xfs_qmmount)(mp, mnt, fl, mfsi_flags) 162 #define XFS_QM_UNMOUNT(mp) \ 163 (*(mp)->m_qm_ops->xfs_qmunmount)(mp) 164 #define XFS_QM_DONE(mp) \ 165 (*(mp)->m_qm_ops->xfs_qmdone)(mp) 166 #define XFS_QM_DQRELE(mp, dq) \ 167 (*(mp)->m_qm_ops->xfs_dqrele)(dq) 168 #define XFS_QM_DQATTACH(mp, ip, fl) \ 169 (*(mp)->m_qm_ops->xfs_dqattach)(ip, fl) 170 #define XFS_QM_DQDETACH(mp, ip) \ 171 (*(mp)->m_qm_ops->xfs_dqdetach)(ip) 172 #define XFS_QM_DQPURGEALL(mp, fl) \ 173 (*(mp)->m_qm_ops->xfs_dqpurgeall)(mp, fl) 174 #define XFS_QM_DQVOPALLOC(mp, ip, uid, gid, prid, fl, dq1, dq2) \ 175 (*(mp)->m_qm_ops->xfs_dqvopalloc)(mp, ip, uid, gid, prid, fl, dq1, dq2) 176 #define XFS_QM_DQVOPCREATE(mp, tp, ip, dq1, dq2) \ 177 (*(mp)->m_qm_ops->xfs_dqvopcreate)(tp, ip, dq1, dq2) 178 #define XFS_QM_DQVOPRENAME(mp, ip) \ 179 (*(mp)->m_qm_ops->xfs_dqvoprename)(ip) 180 #define XFS_QM_DQVOPCHOWN(mp, tp, ip, dqp, dq) \ 181 (*(mp)->m_qm_ops->xfs_dqvopchown)(tp, ip, dqp, dq) 182 #define XFS_QM_DQVOPCHOWNRESV(mp, tp, ip, dq1, dq2, fl) \ 183 (*(mp)->m_qm_ops->xfs_dqvopchownresv)(tp, ip, dq1, dq2, fl) 184 #define XFS_QM_DQSTATVFS(ip, statp) \ 185 (*(ip)->i_mount->m_qm_ops->xfs_dqstatvfs)(ip, statp) 186 #define XFS_QM_DQSYNC(mp, flags) \ 187 (*(mp)->m_qm_ops->xfs_dqsync)(mp, flags) 188 #define XFS_QM_QUOTACTL(mp, cmd, id, addr) \ 189 (*(mp)->m_qm_ops->xfs_quotactl)(mp, cmd, id, addr) 190 191 #ifdef HAVE_PERCPU_SB 192 193 /* 194 * Valid per-cpu incore superblock counters. Note that if you add new counters, 195 * you may need to define new counter disabled bit field descriptors as there 196 * are more possible fields in the superblock that can fit in a bitfield on a 197 * 32 bit platform. The XFS_SBS_* values for the current current counters just 198 * fit. 199 */ 200 typedef struct xfs_icsb_cnts { 201 uint64_t icsb_fdblocks; 202 uint64_t icsb_ifree; 203 uint64_t icsb_icount; 204 unsigned long icsb_flags; 205 } xfs_icsb_cnts_t; 206 207 #define XFS_ICSB_FLAG_LOCK (1 << 0) /* counter lock bit */ 208 209 #define XFS_ICSB_LAZY_COUNT (1 << 1) /* accuracy not needed */ 210 211 extern int xfs_icsb_init_counters(struct xfs_mount *); 212 extern void xfs_icsb_reinit_counters(struct xfs_mount *); 213 extern void xfs_icsb_sync_counters(struct xfs_mount *, int); 214 extern void xfs_icsb_sync_counters_locked(struct xfs_mount *, int); 215 216 #else 217 #define xfs_icsb_init_counters(mp) (0) 218 #define xfs_icsb_reinit_counters(mp) do { } while (0) 219 #define xfs_icsb_sync_counters(mp, flags) do { } while (0) 220 #define xfs_icsb_sync_counters_locked(mp, flags) do { } while (0) 221 #endif 222 223 typedef struct xfs_ail { 224 struct list_head xa_ail; 225 uint xa_gen; 226 struct task_struct *xa_task; 227 xfs_lsn_t xa_target; 228 } xfs_ail_t; 229 230 typedef struct xfs_mount { 231 struct super_block *m_super; 232 xfs_tid_t m_tid; /* next unused tid for fs */ 233 spinlock_t m_ail_lock; /* fs AIL mutex */ 234 xfs_ail_t m_ail; /* fs active log item list */ 235 xfs_sb_t m_sb; /* copy of fs superblock */ 236 spinlock_t m_sb_lock; /* sb counter lock */ 237 struct xfs_buf *m_sb_bp; /* buffer for superblock */ 238 char *m_fsname; /* filesystem name */ 239 int m_fsname_len; /* strlen of fs name */ 240 char *m_rtname; /* realtime device name */ 241 char *m_logname; /* external log device name */ 242 int m_bsize; /* fs logical block size */ 243 xfs_agnumber_t m_agfrotor; /* last ag where space found */ 244 xfs_agnumber_t m_agirotor; /* last ag dir inode alloced */ 245 spinlock_t m_agirotor_lock;/* .. and lock protecting it */ 246 xfs_agnumber_t m_maxagi; /* highest inode alloc group */ 247 struct xfs_inode *m_inodes; /* active inode list */ 248 struct list_head m_del_inodes; /* inodes to reclaim */ 249 mutex_t m_ilock; /* inode list mutex */ 250 uint m_ireclaims; /* count of calls to reclaim*/ 251 uint m_readio_log; /* min read size log bytes */ 252 uint m_readio_blocks; /* min read size blocks */ 253 uint m_writeio_log; /* min write size log bytes */ 254 uint m_writeio_blocks; /* min write size blocks */ 255 struct log *m_log; /* log specific stuff */ 256 int m_logbufs; /* number of log buffers */ 257 int m_logbsize; /* size of each log buffer */ 258 uint m_rsumlevels; /* rt summary levels */ 259 uint m_rsumsize; /* size of rt summary, bytes */ 260 struct xfs_inode *m_rbmip; /* pointer to bitmap inode */ 261 struct xfs_inode *m_rsumip; /* pointer to summary inode */ 262 struct xfs_inode *m_rootip; /* pointer to root directory */ 263 struct xfs_quotainfo *m_quotainfo; /* disk quota information */ 264 xfs_buftarg_t *m_ddev_targp; /* saves taking the address */ 265 xfs_buftarg_t *m_logdev_targp;/* ptr to log device */ 266 xfs_buftarg_t *m_rtdev_targp; /* ptr to rt device */ 267 __uint8_t m_dircook_elog; /* log d-cookie entry bits */ 268 __uint8_t m_blkbit_log; /* blocklog + NBBY */ 269 __uint8_t m_blkbb_log; /* blocklog - BBSHIFT */ 270 __uint8_t m_agno_log; /* log #ag's */ 271 __uint8_t m_agino_log; /* #bits for agino in inum */ 272 __uint16_t m_inode_cluster_size;/* min inode buf size */ 273 uint m_blockmask; /* sb_blocksize-1 */ 274 uint m_blockwsize; /* sb_blocksize in words */ 275 uint m_blockwmask; /* blockwsize-1 */ 276 uint m_alloc_mxr[2]; /* XFS_ALLOC_BLOCK_MAXRECS */ 277 uint m_alloc_mnr[2]; /* XFS_ALLOC_BLOCK_MINRECS */ 278 uint m_bmap_dmxr[2]; /* XFS_BMAP_BLOCK_DMAXRECS */ 279 uint m_bmap_dmnr[2]; /* XFS_BMAP_BLOCK_DMINRECS */ 280 uint m_inobt_mxr[2]; /* XFS_INOBT_BLOCK_MAXRECS */ 281 uint m_inobt_mnr[2]; /* XFS_INOBT_BLOCK_MINRECS */ 282 uint m_ag_maxlevels; /* XFS_AG_MAXLEVELS */ 283 uint m_bm_maxlevels[2]; /* XFS_BM_MAXLEVELS */ 284 uint m_in_maxlevels; /* XFS_IN_MAXLEVELS */ 285 struct xfs_perag *m_perag; /* per-ag accounting info */ 286 struct rw_semaphore m_peraglock; /* lock for m_perag (pointer) */ 287 struct mutex m_growlock; /* growfs mutex */ 288 int m_fixedfsid[2]; /* unchanged for life of FS */ 289 uint m_dmevmask; /* DMI events for this FS */ 290 __uint64_t m_flags; /* global mount flags */ 291 uint m_attroffset; /* inode attribute offset */ 292 uint m_dir_node_ents; /* #entries in a dir danode */ 293 uint m_attr_node_ents; /* #entries in attr danode */ 294 int m_ialloc_inos; /* inodes in inode allocation */ 295 int m_ialloc_blks; /* blocks in inode allocation */ 296 int m_litino; /* size of inode union area */ 297 int m_inoalign_mask;/* mask sb_inoalignmt if used */ 298 uint m_qflags; /* quota status flags */ 299 xfs_trans_reservations_t m_reservations;/* precomputed res values */ 300 __uint64_t m_maxicount; /* maximum inode count */ 301 __uint64_t m_maxioffset; /* maximum inode offset */ 302 __uint64_t m_resblks; /* total reserved blocks */ 303 __uint64_t m_resblks_avail;/* available reserved blocks */ 304 #if XFS_BIG_INUMS 305 xfs_ino_t m_inoadd; /* add value for ino64_offset */ 306 #endif 307 int m_dalign; /* stripe unit */ 308 int m_swidth; /* stripe width */ 309 int m_sinoalign; /* stripe unit inode alignment */ 310 int m_attr_magicpct;/* 37% of the blocksize */ 311 int m_dir_magicpct; /* 37% of the dir blocksize */ 312 __uint8_t m_mk_sharedro; /* mark shared ro on unmount */ 313 __uint8_t m_inode_quiesce;/* call quiesce on new inodes. 314 field governed by m_ilock */ 315 __uint8_t m_sectbb_log; /* sectlog - BBSHIFT */ 316 int m_dirblksize; /* directory block sz--bytes */ 317 int m_dirblkfsbs; /* directory block sz--fsbs */ 318 xfs_dablk_t m_dirdatablk; /* blockno of dir data v2 */ 319 xfs_dablk_t m_dirleafblk; /* blockno of dir non-data v2 */ 320 xfs_dablk_t m_dirfreeblk; /* blockno of dirfreeindex v2 */ 321 uint m_chsize; /* size of next field */ 322 struct xfs_chash *m_chash; /* fs private inode per-cluster 323 * hash table */ 324 struct xfs_dmops *m_dm_ops; /* vector of DMI ops */ 325 struct xfs_qmops *m_qm_ops; /* vector of XQM ops */ 326 atomic_t m_active_trans; /* number trans frozen */ 327 #ifdef HAVE_PERCPU_SB 328 xfs_icsb_cnts_t *m_sb_cnts; /* per-cpu superblock counters */ 329 unsigned long m_icsb_counters; /* disabled per-cpu counters */ 330 struct notifier_block m_icsb_notifier; /* hotplug cpu notifier */ 331 struct mutex m_icsb_mutex; /* balancer sync lock */ 332 #endif 333 struct xfs_mru_cache *m_filestream; /* per-mount filestream data */ 334 struct task_struct *m_sync_task; /* generalised sync thread */ 335 bhv_vfs_sync_work_t m_sync_work; /* work item for VFS_SYNC */ 336 struct list_head m_sync_list; /* sync thread work item list */ 337 spinlock_t m_sync_lock; /* work item list lock */ 338 int m_sync_seq; /* sync thread generation no. */ 339 wait_queue_head_t m_wait_single_sync_task; 340 } xfs_mount_t; 341 342 /* 343 * Flags for m_flags. 344 */ 345 #define XFS_MOUNT_WSYNC (1ULL << 0) /* for nfs - all metadata ops 346 must be synchronous except 347 for space allocations */ 348 #define XFS_MOUNT_INO64 (1ULL << 1) 349 #define XFS_MOUNT_DMAPI (1ULL << 2) /* dmapi is enabled */ 350 #define XFS_MOUNT_WAS_CLEAN (1ULL << 3) 351 #define XFS_MOUNT_FS_SHUTDOWN (1ULL << 4) /* atomic stop of all filesystem 352 operations, typically for 353 disk errors in metadata */ 354 #define XFS_MOUNT_RETERR (1ULL << 6) /* return alignment errors to 355 user */ 356 #define XFS_MOUNT_NOALIGN (1ULL << 7) /* turn off stripe alignment 357 allocations */ 358 #define XFS_MOUNT_ATTR2 (1ULL << 8) /* allow use of attr2 format */ 359 #define XFS_MOUNT_GRPID (1ULL << 9) /* group-ID assigned from directory */ 360 #define XFS_MOUNT_NORECOVERY (1ULL << 10) /* no recovery - dirty fs */ 361 #define XFS_MOUNT_SHARED (1ULL << 11) /* shared mount */ 362 #define XFS_MOUNT_DFLT_IOSIZE (1ULL << 12) /* set default i/o size */ 363 #define XFS_MOUNT_OSYNCISOSYNC (1ULL << 13) /* o_sync is REALLY o_sync */ 364 /* osyncisdsync is now default*/ 365 #define XFS_MOUNT_32BITINODES (1ULL << 14) /* do not create inodes above 366 * 32 bits in size */ 367 #define XFS_MOUNT_SMALL_INUMS (1ULL << 15) /* users wants 32bit inodes */ 368 #define XFS_MOUNT_NOUUID (1ULL << 16) /* ignore uuid during mount */ 369 #define XFS_MOUNT_BARRIER (1ULL << 17) 370 #define XFS_MOUNT_IKEEP (1ULL << 18) /* keep empty inode clusters*/ 371 #define XFS_MOUNT_SWALLOC (1ULL << 19) /* turn on stripe width 372 * allocation */ 373 #define XFS_MOUNT_RDONLY (1ULL << 20) /* read-only fs */ 374 #define XFS_MOUNT_DIRSYNC (1ULL << 21) /* synchronous directory ops */ 375 #define XFS_MOUNT_COMPAT_IOSIZE (1ULL << 22) /* don't report large preferred 376 * I/O size in stat() */ 377 #define XFS_MOUNT_NO_PERCPU_SB (1ULL << 23) /* don't use per-cpu superblock 378 counters */ 379 #define XFS_MOUNT_FILESTREAMS (1ULL << 24) /* enable the filestreams 380 allocator */ 381 382 383 /* 384 * Default minimum read and write sizes. 385 */ 386 #define XFS_READIO_LOG_LARGE 16 387 #define XFS_WRITEIO_LOG_LARGE 16 388 389 /* 390 * Max and min values for mount-option defined I/O 391 * preallocation sizes. 392 */ 393 #define XFS_MAX_IO_LOG 30 /* 1G */ 394 #define XFS_MIN_IO_LOG PAGE_SHIFT 395 396 /* 397 * Synchronous read and write sizes. This should be 398 * better for NFSv2 wsync filesystems. 399 */ 400 #define XFS_WSYNC_READIO_LOG 15 /* 32K */ 401 #define XFS_WSYNC_WRITEIO_LOG 14 /* 16K */ 402 403 /* 404 * Allow large block sizes to be reported to userspace programs if the 405 * "largeio" mount option is used. 406 * 407 * If compatibility mode is specified, simply return the basic unit of caching 408 * so that we don't get inefficient read/modify/write I/O from user apps. 409 * Otherwise.... 410 * 411 * If the underlying volume is a stripe, then return the stripe width in bytes 412 * as the recommended I/O size. It is not a stripe and we've set a default 413 * buffered I/O size, return that, otherwise return the compat default. 414 */ 415 static inline unsigned long 416 xfs_preferred_iosize(xfs_mount_t *mp) 417 { 418 if (mp->m_flags & XFS_MOUNT_COMPAT_IOSIZE) 419 return PAGE_CACHE_SIZE; 420 return (mp->m_swidth ? 421 (mp->m_swidth << mp->m_sb.sb_blocklog) : 422 ((mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) ? 423 (1 << (int)MAX(mp->m_readio_log, mp->m_writeio_log)) : 424 PAGE_CACHE_SIZE)); 425 } 426 427 #define XFS_MAXIOFFSET(mp) ((mp)->m_maxioffset) 428 429 #define XFS_LAST_UNMOUNT_WAS_CLEAN(mp) \ 430 ((mp)->m_flags & XFS_MOUNT_WAS_CLEAN) 431 #define XFS_FORCED_SHUTDOWN(mp) ((mp)->m_flags & XFS_MOUNT_FS_SHUTDOWN) 432 void xfs_do_force_shutdown(struct xfs_mount *mp, int flags, char *fname, 433 int lnnum); 434 #define xfs_force_shutdown(m,f) \ 435 xfs_do_force_shutdown(m, f, __FILE__, __LINE__) 436 437 /* 438 * Flags for xfs_mountfs 439 */ 440 #define XFS_MFSI_SECOND 0x01 /* Secondary mount -- skip stuff */ 441 #define XFS_MFSI_CLIENT 0x02 /* Is a client -- skip lots of stuff */ 442 /* XFS_MFSI_RRINODES */ 443 #define XFS_MFSI_NOUNLINK 0x08 /* Skip unlinked inode processing in */ 444 /* log recovery */ 445 #define XFS_MFSI_NO_QUOTACHECK 0x10 /* Skip quotacheck processing */ 446 /* XFS_MFSI_CONVERT_SUNIT */ 447 #define XFS_MFSI_QUIET 0x40 /* Be silent if mount errors found */ 448 449 #define XFS_DADDR_TO_AGNO(mp,d) xfs_daddr_to_agno(mp,d) 450 static inline xfs_agnumber_t 451 xfs_daddr_to_agno(struct xfs_mount *mp, xfs_daddr_t d) 452 { 453 xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d); 454 do_div(ld, mp->m_sb.sb_agblocks); 455 return (xfs_agnumber_t) ld; 456 } 457 458 #define XFS_DADDR_TO_AGBNO(mp,d) xfs_daddr_to_agbno(mp,d) 459 static inline xfs_agblock_t 460 xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d) 461 { 462 xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d); 463 return (xfs_agblock_t) do_div(ld, mp->m_sb.sb_agblocks); 464 } 465 466 /* 467 * perag get/put wrappers for eventual ref counting 468 */ 469 static inline xfs_perag_t * 470 xfs_get_perag(struct xfs_mount *mp, xfs_ino_t ino) 471 { 472 return &mp->m_perag[XFS_INO_TO_AGNO(mp, ino)]; 473 } 474 475 static inline void 476 xfs_put_perag(struct xfs_mount *mp, xfs_perag_t *pag) 477 { 478 /* nothing to see here, move along */ 479 } 480 481 /* 482 * Per-cpu superblock locking functions 483 */ 484 #ifdef HAVE_PERCPU_SB 485 STATIC_INLINE void 486 xfs_icsb_lock(xfs_mount_t *mp) 487 { 488 mutex_lock(&mp->m_icsb_mutex); 489 } 490 491 STATIC_INLINE void 492 xfs_icsb_unlock(xfs_mount_t *mp) 493 { 494 mutex_unlock(&mp->m_icsb_mutex); 495 } 496 #else 497 #define xfs_icsb_lock(mp) 498 #define xfs_icsb_unlock(mp) 499 #endif 500 501 /* 502 * This structure is for use by the xfs_mod_incore_sb_batch() routine. 503 * xfs_growfs can specify a few fields which are more than int limit 504 */ 505 typedef struct xfs_mod_sb { 506 xfs_sb_field_t msb_field; /* Field to modify, see below */ 507 int64_t msb_delta; /* Change to make to specified field */ 508 } xfs_mod_sb_t; 509 510 #define XFS_MOUNT_ILOCK(mp) mutex_lock(&((mp)->m_ilock)) 511 #define XFS_MOUNT_IUNLOCK(mp) mutex_unlock(&((mp)->m_ilock)) 512 513 extern xfs_mount_t *xfs_mount_init(void); 514 extern void xfs_mod_sb(xfs_trans_t *, __int64_t); 515 extern int xfs_log_sbcount(xfs_mount_t *, uint); 516 extern void xfs_mount_free(xfs_mount_t *mp); 517 extern int xfs_mountfs(xfs_mount_t *mp, int); 518 extern void xfs_mountfs_check_barriers(xfs_mount_t *mp); 519 520 extern int xfs_unmountfs(xfs_mount_t *, struct cred *); 521 extern void xfs_unmountfs_close(xfs_mount_t *, struct cred *); 522 extern int xfs_unmountfs_writesb(xfs_mount_t *); 523 extern int xfs_unmount_flush(xfs_mount_t *, int); 524 extern int xfs_mod_incore_sb(xfs_mount_t *, xfs_sb_field_t, int64_t, int); 525 extern int xfs_mod_incore_sb_unlocked(xfs_mount_t *, xfs_sb_field_t, 526 int64_t, int); 527 extern int xfs_mod_incore_sb_batch(xfs_mount_t *, xfs_mod_sb_t *, 528 uint, int); 529 extern struct xfs_buf *xfs_getsb(xfs_mount_t *, int); 530 extern int xfs_readsb(xfs_mount_t *, int); 531 extern void xfs_freesb(xfs_mount_t *); 532 extern int xfs_fs_writable(xfs_mount_t *); 533 extern int xfs_syncsub(xfs_mount_t *, int, int *); 534 extern int xfs_sync_inodes(xfs_mount_t *, int, int *); 535 extern xfs_agnumber_t xfs_initialize_perag(xfs_mount_t *, xfs_agnumber_t); 536 extern void xfs_sb_from_disk(struct xfs_sb *, struct xfs_dsb *); 537 extern void xfs_sb_to_disk(struct xfs_dsb *, struct xfs_sb *, __int64_t); 538 extern int xfs_sb_validate_fsb_count(struct xfs_sb *, __uint64_t); 539 540 extern int xfs_dmops_get(struct xfs_mount *, struct xfs_mount_args *); 541 extern void xfs_dmops_put(struct xfs_mount *); 542 extern int xfs_qmops_get(struct xfs_mount *, struct xfs_mount_args *); 543 extern void xfs_qmops_put(struct xfs_mount *); 544 545 extern struct xfs_dmops xfs_dmcore_xfs; 546 547 extern int xfs_init(void); 548 extern void xfs_cleanup(void); 549 550 #endif /* __KERNEL__ */ 551 552 #endif /* __XFS_MOUNT_H__ */ 553