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 #define xfs_daddr_to_agno(mp,d) \ 48 ((xfs_agnumber_t)(XFS_BB_TO_FSBT(mp, d) / (mp)->m_sb.sb_agblocks)) 49 #define xfs_daddr_to_agbno(mp,d) \ 50 ((xfs_agblock_t)(XFS_BB_TO_FSBT(mp, d) % (mp)->m_sb.sb_agblocks)) 51 52 #else /* __KERNEL__ */ 53 54 #include "xfs_sync.h" 55 56 struct cred; 57 struct log; 58 struct xfs_mount_args; 59 struct xfs_inode; 60 struct xfs_bmbt_irec; 61 struct xfs_bmap_free; 62 struct xfs_extdelta; 63 struct xfs_swapext; 64 struct xfs_mru_cache; 65 struct xfs_nameops; 66 struct xfs_ail; 67 68 /* 69 * Prototypes and functions for the Data Migration subsystem. 70 */ 71 72 typedef int (*xfs_send_data_t)(int, struct xfs_inode *, 73 xfs_off_t, size_t, int, int *); 74 typedef int (*xfs_send_mmap_t)(struct vm_area_struct *, uint); 75 typedef int (*xfs_send_destroy_t)(struct xfs_inode *, dm_right_t); 76 typedef int (*xfs_send_namesp_t)(dm_eventtype_t, struct xfs_mount *, 77 struct xfs_inode *, dm_right_t, 78 struct xfs_inode *, dm_right_t, 79 const char *, const char *, mode_t, int, int); 80 typedef int (*xfs_send_mount_t)(struct xfs_mount *, dm_right_t, 81 char *, char *); 82 typedef void (*xfs_send_unmount_t)(struct xfs_mount *, struct xfs_inode *, 83 dm_right_t, mode_t, int, int); 84 85 typedef struct xfs_dmops { 86 xfs_send_data_t xfs_send_data; 87 xfs_send_mmap_t xfs_send_mmap; 88 xfs_send_destroy_t xfs_send_destroy; 89 xfs_send_namesp_t xfs_send_namesp; 90 xfs_send_mount_t xfs_send_mount; 91 xfs_send_unmount_t xfs_send_unmount; 92 } xfs_dmops_t; 93 94 #define XFS_SEND_DATA(mp, ev,ip,off,len,fl,lock) \ 95 (*(mp)->m_dm_ops->xfs_send_data)(ev,ip,off,len,fl,lock) 96 #define XFS_SEND_MMAP(mp, vma,fl) \ 97 (*(mp)->m_dm_ops->xfs_send_mmap)(vma,fl) 98 #define XFS_SEND_DESTROY(mp, ip,right) \ 99 (*(mp)->m_dm_ops->xfs_send_destroy)(ip,right) 100 #define XFS_SEND_NAMESP(mp, ev,b1,r1,b2,r2,n1,n2,mode,rval,fl) \ 101 (*(mp)->m_dm_ops->xfs_send_namesp)(ev,NULL,b1,r1,b2,r2,n1,n2,mode,rval,fl) 102 #define XFS_SEND_PREUNMOUNT(mp,b1,r1,b2,r2,n1,n2,mode,rval,fl) \ 103 (*(mp)->m_dm_ops->xfs_send_namesp)(DM_EVENT_PREUNMOUNT,mp,b1,r1,b2,r2,n1,n2,mode,rval,fl) 104 #define XFS_SEND_MOUNT(mp,right,path,name) \ 105 (*(mp)->m_dm_ops->xfs_send_mount)(mp,right,path,name) 106 #define XFS_SEND_UNMOUNT(mp, ip,right,mode,rval,fl) \ 107 (*(mp)->m_dm_ops->xfs_send_unmount)(mp,ip,right,mode,rval,fl) 108 109 110 /* 111 * Prototypes and functions for the Quota Management subsystem. 112 */ 113 114 struct xfs_dquot; 115 struct xfs_dqtrxops; 116 struct xfs_quotainfo; 117 118 typedef int (*xfs_qminit_t)(struct xfs_mount *, uint *, uint *); 119 typedef int (*xfs_qmmount_t)(struct xfs_mount *, uint, uint); 120 typedef void (*xfs_qmunmount_t)(struct xfs_mount *); 121 typedef void (*xfs_qmdone_t)(struct xfs_mount *); 122 typedef void (*xfs_dqrele_t)(struct xfs_dquot *); 123 typedef int (*xfs_dqattach_t)(struct xfs_inode *, uint); 124 typedef void (*xfs_dqdetach_t)(struct xfs_inode *); 125 typedef int (*xfs_dqpurgeall_t)(struct xfs_mount *, uint); 126 typedef int (*xfs_dqvopalloc_t)(struct xfs_mount *, 127 struct xfs_inode *, uid_t, gid_t, prid_t, uint, 128 struct xfs_dquot **, struct xfs_dquot **); 129 typedef void (*xfs_dqvopcreate_t)(struct xfs_trans *, struct xfs_inode *, 130 struct xfs_dquot *, struct xfs_dquot *); 131 typedef int (*xfs_dqvoprename_t)(struct xfs_inode **); 132 typedef struct xfs_dquot * (*xfs_dqvopchown_t)( 133 struct xfs_trans *, struct xfs_inode *, 134 struct xfs_dquot **, struct xfs_dquot *); 135 typedef int (*xfs_dqvopchownresv_t)(struct xfs_trans *, struct xfs_inode *, 136 struct xfs_dquot *, struct xfs_dquot *, uint); 137 typedef void (*xfs_dqstatvfs_t)(struct xfs_inode *, struct kstatfs *); 138 typedef int (*xfs_dqsync_t)(struct xfs_mount *, int flags); 139 140 typedef struct xfs_qmops { 141 xfs_qminit_t xfs_qminit; 142 xfs_qmdone_t xfs_qmdone; 143 xfs_qmmount_t xfs_qmmount; 144 xfs_qmunmount_t xfs_qmunmount; 145 xfs_dqrele_t xfs_dqrele; 146 xfs_dqattach_t xfs_dqattach; 147 xfs_dqdetach_t xfs_dqdetach; 148 xfs_dqpurgeall_t xfs_dqpurgeall; 149 xfs_dqvopalloc_t xfs_dqvopalloc; 150 xfs_dqvopcreate_t xfs_dqvopcreate; 151 xfs_dqvoprename_t xfs_dqvoprename; 152 xfs_dqvopchown_t xfs_dqvopchown; 153 xfs_dqvopchownresv_t xfs_dqvopchownresv; 154 xfs_dqstatvfs_t xfs_dqstatvfs; 155 xfs_dqsync_t xfs_dqsync; 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) \ 162 (*(mp)->m_qm_ops->xfs_qmmount)(mp, mnt, fl) 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 #define XFS_QM_DQSTATVFS(ip, statp) \ 186 (*(ip)->i_mount->m_qm_ops->xfs_dqstatvfs)(ip, statp) 187 #define XFS_QM_DQSYNC(mp, flags) \ 188 (*(mp)->m_qm_ops->xfs_dqsync)(mp, flags) 189 190 #ifdef HAVE_PERCPU_SB 191 192 /* 193 * Valid per-cpu incore superblock counters. Note that if you add new counters, 194 * you may need to define new counter disabled bit field descriptors as there 195 * are more possible fields in the superblock that can fit in a bitfield on a 196 * 32 bit platform. The XFS_SBS_* values for the current current counters just 197 * fit. 198 */ 199 typedef struct xfs_icsb_cnts { 200 uint64_t icsb_fdblocks; 201 uint64_t icsb_ifree; 202 uint64_t icsb_icount; 203 unsigned long icsb_flags; 204 } xfs_icsb_cnts_t; 205 206 #define XFS_ICSB_FLAG_LOCK (1 << 0) /* counter lock bit */ 207 208 #define XFS_ICSB_LAZY_COUNT (1 << 1) /* accuracy not needed */ 209 210 extern int xfs_icsb_init_counters(struct xfs_mount *); 211 extern void xfs_icsb_reinit_counters(struct xfs_mount *); 212 extern void xfs_icsb_destroy_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_destroy_counters(mp) do { } while (0) 219 #define xfs_icsb_reinit_counters(mp) do { } while (0) 220 #define xfs_icsb_sync_counters(mp, flags) do { } while (0) 221 #define xfs_icsb_sync_counters_locked(mp, flags) do { } while (0) 222 #endif 223 224 typedef struct xfs_mount { 225 struct super_block *m_super; 226 xfs_tid_t m_tid; /* next unused tid for fs */ 227 struct xfs_ail *m_ail; /* fs active log item list */ 228 xfs_sb_t m_sb; /* copy of fs superblock */ 229 spinlock_t m_sb_lock; /* sb counter lock */ 230 struct xfs_buf *m_sb_bp; /* buffer for superblock */ 231 char *m_fsname; /* filesystem name */ 232 int m_fsname_len; /* strlen of fs name */ 233 char *m_rtname; /* realtime device name */ 234 char *m_logname; /* external log device name */ 235 int m_bsize; /* fs logical block size */ 236 xfs_agnumber_t m_agfrotor; /* last ag where space found */ 237 xfs_agnumber_t m_agirotor; /* last ag dir inode alloced */ 238 spinlock_t m_agirotor_lock;/* .. and lock protecting it */ 239 xfs_agnumber_t m_maxagi; /* highest inode alloc group */ 240 uint m_readio_log; /* min read size log bytes */ 241 uint m_readio_blocks; /* min read size blocks */ 242 uint m_writeio_log; /* min write size log bytes */ 243 uint m_writeio_blocks; /* min write size blocks */ 244 struct log *m_log; /* log specific stuff */ 245 int m_logbufs; /* number of log buffers */ 246 int m_logbsize; /* size of each log buffer */ 247 uint m_rsumlevels; /* rt summary levels */ 248 uint m_rsumsize; /* size of rt summary, bytes */ 249 struct xfs_inode *m_rbmip; /* pointer to bitmap inode */ 250 struct xfs_inode *m_rsumip; /* pointer to summary inode */ 251 struct xfs_inode *m_rootip; /* pointer to root directory */ 252 struct xfs_quotainfo *m_quotainfo; /* disk quota information */ 253 xfs_buftarg_t *m_ddev_targp; /* saves taking the address */ 254 xfs_buftarg_t *m_logdev_targp;/* ptr to log device */ 255 xfs_buftarg_t *m_rtdev_targp; /* ptr to rt device */ 256 __uint8_t m_blkbit_log; /* blocklog + NBBY */ 257 __uint8_t m_blkbb_log; /* blocklog - BBSHIFT */ 258 __uint8_t m_agno_log; /* log #ag's */ 259 __uint8_t m_agino_log; /* #bits for agino in inum */ 260 __uint16_t m_inode_cluster_size;/* min inode buf size */ 261 uint m_blockmask; /* sb_blocksize-1 */ 262 uint m_blockwsize; /* sb_blocksize in words */ 263 uint m_blockwmask; /* blockwsize-1 */ 264 uint m_alloc_mxr[2]; /* max alloc btree records */ 265 uint m_alloc_mnr[2]; /* min alloc btree records */ 266 uint m_bmap_dmxr[2]; /* max bmap btree records */ 267 uint m_bmap_dmnr[2]; /* min bmap btree records */ 268 uint m_inobt_mxr[2]; /* max inobt btree records */ 269 uint m_inobt_mnr[2]; /* min inobt btree records */ 270 uint m_ag_maxlevels; /* XFS_AG_MAXLEVELS */ 271 uint m_bm_maxlevels[2]; /* XFS_BM_MAXLEVELS */ 272 uint m_in_maxlevels; /* max inobt btree levels. */ 273 struct xfs_perag *m_perag; /* per-ag accounting info */ 274 struct rw_semaphore m_peraglock; /* lock for m_perag (pointer) */ 275 struct mutex m_growlock; /* growfs mutex */ 276 int m_fixedfsid[2]; /* unchanged for life of FS */ 277 uint m_dmevmask; /* DMI events for this FS */ 278 __uint64_t m_flags; /* global mount flags */ 279 uint m_dir_node_ents; /* #entries in a dir danode */ 280 uint m_attr_node_ents; /* #entries in attr danode */ 281 int m_ialloc_inos; /* inodes in inode allocation */ 282 int m_ialloc_blks; /* blocks in inode allocation */ 283 int m_inoalign_mask;/* mask sb_inoalignmt if used */ 284 uint m_qflags; /* quota status flags */ 285 xfs_trans_reservations_t m_reservations;/* precomputed res values */ 286 __uint64_t m_maxicount; /* maximum inode count */ 287 __uint64_t m_maxioffset; /* maximum inode offset */ 288 __uint64_t m_resblks; /* total reserved blocks */ 289 __uint64_t m_resblks_avail;/* available reserved blocks */ 290 int m_dalign; /* stripe unit */ 291 int m_swidth; /* stripe width */ 292 int m_sinoalign; /* stripe unit inode alignment */ 293 int m_attr_magicpct;/* 37% of the blocksize */ 294 int m_dir_magicpct; /* 37% of the dir blocksize */ 295 __uint8_t m_sectbb_log; /* sectlog - BBSHIFT */ 296 const struct xfs_nameops *m_dirnameops; /* vector of dir name ops */ 297 int m_dirblksize; /* directory block sz--bytes */ 298 int m_dirblkfsbs; /* directory block sz--fsbs */ 299 xfs_dablk_t m_dirdatablk; /* blockno of dir data v2 */ 300 xfs_dablk_t m_dirleafblk; /* blockno of dir non-data v2 */ 301 xfs_dablk_t m_dirfreeblk; /* blockno of dirfreeindex v2 */ 302 uint m_chsize; /* size of next field */ 303 struct xfs_chash *m_chash; /* fs private inode per-cluster 304 * hash table */ 305 struct xfs_dmops *m_dm_ops; /* vector of DMI ops */ 306 struct xfs_qmops *m_qm_ops; /* vector of XQM ops */ 307 atomic_t m_active_trans; /* number trans frozen */ 308 #ifdef HAVE_PERCPU_SB 309 xfs_icsb_cnts_t *m_sb_cnts; /* per-cpu superblock counters */ 310 unsigned long m_icsb_counters; /* disabled per-cpu counters */ 311 struct notifier_block m_icsb_notifier; /* hotplug cpu notifier */ 312 struct mutex m_icsb_mutex; /* balancer sync lock */ 313 #endif 314 struct xfs_mru_cache *m_filestream; /* per-mount filestream data */ 315 struct task_struct *m_sync_task; /* generalised sync thread */ 316 xfs_sync_work_t m_sync_work; /* work item for VFS_SYNC */ 317 struct list_head m_sync_list; /* sync thread work item list */ 318 spinlock_t m_sync_lock; /* work item list lock */ 319 int m_sync_seq; /* sync thread generation no. */ 320 wait_queue_head_t m_wait_single_sync_task; 321 __int64_t m_update_flags; /* sb flags we need to update 322 on the next remount,rw */ 323 } xfs_mount_t; 324 325 /* 326 * Flags for m_flags. 327 */ 328 #define XFS_MOUNT_WSYNC (1ULL << 0) /* for nfs - all metadata ops 329 must be synchronous except 330 for space allocations */ 331 #define XFS_MOUNT_DMAPI (1ULL << 2) /* dmapi is enabled */ 332 #define XFS_MOUNT_WAS_CLEAN (1ULL << 3) 333 #define XFS_MOUNT_FS_SHUTDOWN (1ULL << 4) /* atomic stop of all filesystem 334 operations, typically for 335 disk errors in metadata */ 336 #define XFS_MOUNT_RETERR (1ULL << 6) /* return alignment errors to 337 user */ 338 #define XFS_MOUNT_NOALIGN (1ULL << 7) /* turn off stripe alignment 339 allocations */ 340 #define XFS_MOUNT_ATTR2 (1ULL << 8) /* allow use of attr2 format */ 341 #define XFS_MOUNT_GRPID (1ULL << 9) /* group-ID assigned from directory */ 342 #define XFS_MOUNT_NORECOVERY (1ULL << 10) /* no recovery - dirty fs */ 343 #define XFS_MOUNT_DFLT_IOSIZE (1ULL << 12) /* set default i/o size */ 344 #define XFS_MOUNT_OSYNCISOSYNC (1ULL << 13) /* o_sync is REALLY o_sync */ 345 /* osyncisdsync is now default*/ 346 #define XFS_MOUNT_32BITINODES (1ULL << 14) /* do not create inodes above 347 * 32 bits in size */ 348 #define XFS_MOUNT_SMALL_INUMS (1ULL << 15) /* users wants 32bit inodes */ 349 #define XFS_MOUNT_NOUUID (1ULL << 16) /* ignore uuid during mount */ 350 #define XFS_MOUNT_BARRIER (1ULL << 17) 351 #define XFS_MOUNT_IKEEP (1ULL << 18) /* keep empty inode clusters*/ 352 #define XFS_MOUNT_SWALLOC (1ULL << 19) /* turn on stripe width 353 * allocation */ 354 #define XFS_MOUNT_RDONLY (1ULL << 20) /* read-only fs */ 355 #define XFS_MOUNT_DIRSYNC (1ULL << 21) /* synchronous directory ops */ 356 #define XFS_MOUNT_COMPAT_IOSIZE (1ULL << 22) /* don't report large preferred 357 * I/O size in stat() */ 358 #define XFS_MOUNT_NO_PERCPU_SB (1ULL << 23) /* don't use per-cpu superblock 359 counters */ 360 #define XFS_MOUNT_FILESTREAMS (1ULL << 24) /* enable the filestreams 361 allocator */ 362 #define XFS_MOUNT_NOATTR2 (1ULL << 25) /* disable use of attr2 format */ 363 364 365 /* 366 * Default minimum read and write sizes. 367 */ 368 #define XFS_READIO_LOG_LARGE 16 369 #define XFS_WRITEIO_LOG_LARGE 16 370 371 /* 372 * Max and min values for mount-option defined I/O 373 * preallocation sizes. 374 */ 375 #define XFS_MAX_IO_LOG 30 /* 1G */ 376 #define XFS_MIN_IO_LOG PAGE_SHIFT 377 378 /* 379 * Synchronous read and write sizes. This should be 380 * better for NFSv2 wsync filesystems. 381 */ 382 #define XFS_WSYNC_READIO_LOG 15 /* 32k */ 383 #define XFS_WSYNC_WRITEIO_LOG 14 /* 16k */ 384 385 /* 386 * Allow large block sizes to be reported to userspace programs if the 387 * "largeio" mount option is used. 388 * 389 * If compatibility mode is specified, simply return the basic unit of caching 390 * so that we don't get inefficient read/modify/write I/O from user apps. 391 * Otherwise.... 392 * 393 * If the underlying volume is a stripe, then return the stripe width in bytes 394 * as the recommended I/O size. It is not a stripe and we've set a default 395 * buffered I/O size, return that, otherwise return the compat default. 396 */ 397 static inline unsigned long 398 xfs_preferred_iosize(xfs_mount_t *mp) 399 { 400 if (mp->m_flags & XFS_MOUNT_COMPAT_IOSIZE) 401 return PAGE_CACHE_SIZE; 402 return (mp->m_swidth ? 403 (mp->m_swidth << mp->m_sb.sb_blocklog) : 404 ((mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) ? 405 (1 << (int)MAX(mp->m_readio_log, mp->m_writeio_log)) : 406 PAGE_CACHE_SIZE)); 407 } 408 409 #define XFS_MAXIOFFSET(mp) ((mp)->m_maxioffset) 410 411 #define XFS_LAST_UNMOUNT_WAS_CLEAN(mp) \ 412 ((mp)->m_flags & XFS_MOUNT_WAS_CLEAN) 413 #define XFS_FORCED_SHUTDOWN(mp) ((mp)->m_flags & XFS_MOUNT_FS_SHUTDOWN) 414 void xfs_do_force_shutdown(struct xfs_mount *mp, int flags, char *fname, 415 int lnnum); 416 #define xfs_force_shutdown(m,f) \ 417 xfs_do_force_shutdown(m, f, __FILE__, __LINE__) 418 419 #define SHUTDOWN_META_IO_ERROR 0x0001 /* write attempt to metadata failed */ 420 #define SHUTDOWN_LOG_IO_ERROR 0x0002 /* write attempt to the log failed */ 421 #define SHUTDOWN_FORCE_UMOUNT 0x0004 /* shutdown from a forced unmount */ 422 #define SHUTDOWN_CORRUPT_INCORE 0x0008 /* corrupt in-memory data structures */ 423 #define SHUTDOWN_REMOTE_REQ 0x0010 /* shutdown came from remote cell */ 424 #define SHUTDOWN_DEVICE_REQ 0x0020 /* failed all paths to the device */ 425 426 #define xfs_test_for_freeze(mp) ((mp)->m_super->s_frozen) 427 #define xfs_wait_for_freeze(mp,l) vfs_check_frozen((mp)->m_super, (l)) 428 429 /* 430 * Flags for xfs_mountfs 431 */ 432 #define XFS_MFSI_QUIET 0x40 /* Be silent if mount errors found */ 433 434 static inline xfs_agnumber_t 435 xfs_daddr_to_agno(struct xfs_mount *mp, xfs_daddr_t d) 436 { 437 xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d); 438 do_div(ld, mp->m_sb.sb_agblocks); 439 return (xfs_agnumber_t) ld; 440 } 441 442 static inline xfs_agblock_t 443 xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d) 444 { 445 xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d); 446 return (xfs_agblock_t) do_div(ld, mp->m_sb.sb_agblocks); 447 } 448 449 /* 450 * perag get/put wrappers for eventual ref counting 451 */ 452 static inline xfs_perag_t * 453 xfs_get_perag(struct xfs_mount *mp, xfs_ino_t ino) 454 { 455 return &mp->m_perag[XFS_INO_TO_AGNO(mp, ino)]; 456 } 457 458 static inline void 459 xfs_put_perag(struct xfs_mount *mp, xfs_perag_t *pag) 460 { 461 /* nothing to see here, move along */ 462 } 463 464 /* 465 * Per-cpu superblock locking functions 466 */ 467 #ifdef HAVE_PERCPU_SB 468 STATIC_INLINE void 469 xfs_icsb_lock(xfs_mount_t *mp) 470 { 471 mutex_lock(&mp->m_icsb_mutex); 472 } 473 474 STATIC_INLINE void 475 xfs_icsb_unlock(xfs_mount_t *mp) 476 { 477 mutex_unlock(&mp->m_icsb_mutex); 478 } 479 #else 480 #define xfs_icsb_lock(mp) 481 #define xfs_icsb_unlock(mp) 482 #endif 483 484 /* 485 * This structure is for use by the xfs_mod_incore_sb_batch() routine. 486 * xfs_growfs can specify a few fields which are more than int limit 487 */ 488 typedef struct xfs_mod_sb { 489 xfs_sb_field_t msb_field; /* Field to modify, see below */ 490 int64_t msb_delta; /* Change to make to specified field */ 491 } xfs_mod_sb_t; 492 493 extern int xfs_log_sbcount(xfs_mount_t *, uint); 494 extern int xfs_mountfs(xfs_mount_t *mp); 495 extern void xfs_mountfs_check_barriers(xfs_mount_t *mp); 496 497 extern void xfs_unmountfs(xfs_mount_t *); 498 extern int xfs_unmountfs_writesb(xfs_mount_t *); 499 extern int xfs_mod_incore_sb(xfs_mount_t *, xfs_sb_field_t, int64_t, int); 500 extern int xfs_mod_incore_sb_unlocked(xfs_mount_t *, xfs_sb_field_t, 501 int64_t, int); 502 extern int xfs_mod_incore_sb_batch(xfs_mount_t *, xfs_mod_sb_t *, 503 uint, int); 504 extern int xfs_mount_log_sb(xfs_mount_t *, __int64_t); 505 extern struct xfs_buf *xfs_getsb(xfs_mount_t *, int); 506 extern int xfs_readsb(xfs_mount_t *, int); 507 extern void xfs_freesb(xfs_mount_t *); 508 extern int xfs_fs_writable(xfs_mount_t *); 509 extern int xfs_sb_validate_fsb_count(struct xfs_sb *, __uint64_t); 510 511 extern int xfs_dmops_get(struct xfs_mount *); 512 extern void xfs_dmops_put(struct xfs_mount *); 513 extern int xfs_qmops_get(struct xfs_mount *); 514 extern void xfs_qmops_put(struct xfs_mount *); 515 516 extern struct xfs_dmops xfs_dmcore_xfs; 517 518 #endif /* __KERNEL__ */ 519 520 extern void xfs_mod_sb(struct xfs_trans *, __int64_t); 521 extern xfs_agnumber_t xfs_initialize_perag(struct xfs_mount *, xfs_agnumber_t); 522 extern void xfs_sb_from_disk(struct xfs_sb *, struct xfs_dsb *); 523 extern void xfs_sb_to_disk(struct xfs_dsb *, struct xfs_sb *, __int64_t); 524 525 #endif /* __XFS_MOUNT_H__ */ 526