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 bhv_vfs; 58 struct bhv_vnode; 59 struct xfs_mount_args; 60 struct xfs_ihash; 61 struct xfs_chash; 62 struct xfs_inode; 63 struct xfs_perag; 64 struct xfs_iocore; 65 struct xfs_bmbt_irec; 66 struct xfs_bmap_free; 67 struct xfs_extdelta; 68 struct xfs_swapext; 69 struct xfs_mru_cache; 70 71 extern struct bhv_vfsops xfs_vfsops; 72 extern struct bhv_vnodeops xfs_vnodeops; 73 74 #define AIL_LOCK_T lock_t 75 #define AIL_LOCKINIT(x,y) spinlock_init(x,y) 76 #define AIL_LOCK_DESTROY(x) spinlock_destroy(x) 77 #define AIL_LOCK(mp,s) s=mutex_spinlock(&(mp)->m_ail_lock) 78 #define AIL_UNLOCK(mp,s) mutex_spinunlock(&(mp)->m_ail_lock, s) 79 80 81 /* 82 * Prototypes and functions for the Data Migration subsystem. 83 */ 84 85 typedef int (*xfs_send_data_t)(int, struct bhv_vnode *, 86 xfs_off_t, size_t, int, bhv_vrwlock_t *); 87 typedef int (*xfs_send_mmap_t)(struct vm_area_struct *, uint); 88 typedef int (*xfs_send_destroy_t)(struct bhv_vnode *, dm_right_t); 89 typedef int (*xfs_send_namesp_t)(dm_eventtype_t, struct bhv_vfs *, 90 struct bhv_vnode *, 91 dm_right_t, struct bhv_vnode *, dm_right_t, 92 char *, char *, mode_t, int, int); 93 typedef void (*xfs_send_unmount_t)(struct bhv_vfs *, struct bhv_vnode *, 94 dm_right_t, mode_t, int, int); 95 96 typedef struct xfs_dmops { 97 xfs_send_data_t xfs_send_data; 98 xfs_send_mmap_t xfs_send_mmap; 99 xfs_send_destroy_t xfs_send_destroy; 100 xfs_send_namesp_t xfs_send_namesp; 101 xfs_send_unmount_t xfs_send_unmount; 102 } xfs_dmops_t; 103 104 #define XFS_SEND_DATA(mp, ev,vp,off,len,fl,lock) \ 105 (*(mp)->m_dm_ops.xfs_send_data)(ev,vp,off,len,fl,lock) 106 #define XFS_SEND_MMAP(mp, vma,fl) \ 107 (*(mp)->m_dm_ops.xfs_send_mmap)(vma,fl) 108 #define XFS_SEND_DESTROY(mp, vp,right) \ 109 (*(mp)->m_dm_ops.xfs_send_destroy)(vp,right) 110 #define XFS_SEND_NAMESP(mp, ev,b1,r1,b2,r2,n1,n2,mode,rval,fl) \ 111 (*(mp)->m_dm_ops.xfs_send_namesp)(ev,NULL,b1,r1,b2,r2,n1,n2,mode,rval,fl) 112 #define XFS_SEND_PREUNMOUNT(mp, vfs,b1,r1,b2,r2,n1,n2,mode,rval,fl) \ 113 (*(mp)->m_dm_ops.xfs_send_namesp)(DM_EVENT_PREUNMOUNT,vfs,b1,r1,b2,r2,n1,n2,mode,rval,fl) 114 #define XFS_SEND_UNMOUNT(mp, vfsp,vp,right,mode,rval,fl) \ 115 (*(mp)->m_dm_ops.xfs_send_unmount)(vfsp,vp,right,mode,rval,fl) 116 117 118 /* 119 * Prototypes and functions for the Quota Management subsystem. 120 */ 121 122 struct xfs_dquot; 123 struct xfs_dqtrxops; 124 struct xfs_quotainfo; 125 126 typedef int (*xfs_qminit_t)(struct xfs_mount *, uint *, uint *); 127 typedef int (*xfs_qmmount_t)(struct xfs_mount *, uint, uint, int); 128 typedef int (*xfs_qmunmount_t)(struct xfs_mount *); 129 typedef void (*xfs_qmdone_t)(struct xfs_mount *); 130 typedef void (*xfs_dqrele_t)(struct xfs_dquot *); 131 typedef int (*xfs_dqattach_t)(struct xfs_inode *, uint); 132 typedef void (*xfs_dqdetach_t)(struct xfs_inode *); 133 typedef int (*xfs_dqpurgeall_t)(struct xfs_mount *, uint); 134 typedef int (*xfs_dqvopalloc_t)(struct xfs_mount *, 135 struct xfs_inode *, uid_t, gid_t, prid_t, uint, 136 struct xfs_dquot **, struct xfs_dquot **); 137 typedef void (*xfs_dqvopcreate_t)(struct xfs_trans *, struct xfs_inode *, 138 struct xfs_dquot *, struct xfs_dquot *); 139 typedef int (*xfs_dqvoprename_t)(struct xfs_inode **); 140 typedef struct xfs_dquot * (*xfs_dqvopchown_t)( 141 struct xfs_trans *, struct xfs_inode *, 142 struct xfs_dquot **, struct xfs_dquot *); 143 typedef int (*xfs_dqvopchownresv_t)(struct xfs_trans *, struct xfs_inode *, 144 struct xfs_dquot *, struct xfs_dquot *, uint); 145 146 typedef struct xfs_qmops { 147 xfs_qminit_t xfs_qminit; 148 xfs_qmdone_t xfs_qmdone; 149 xfs_qmmount_t xfs_qmmount; 150 xfs_qmunmount_t xfs_qmunmount; 151 xfs_dqrele_t xfs_dqrele; 152 xfs_dqattach_t xfs_dqattach; 153 xfs_dqdetach_t xfs_dqdetach; 154 xfs_dqpurgeall_t xfs_dqpurgeall; 155 xfs_dqvopalloc_t xfs_dqvopalloc; 156 xfs_dqvopcreate_t xfs_dqvopcreate; 157 xfs_dqvoprename_t xfs_dqvoprename; 158 xfs_dqvopchown_t xfs_dqvopchown; 159 xfs_dqvopchownresv_t xfs_dqvopchownresv; 160 struct xfs_dqtrxops *xfs_dqtrxops; 161 } xfs_qmops_t; 162 163 #define XFS_QM_INIT(mp, mnt, fl) \ 164 (*(mp)->m_qm_ops.xfs_qminit)(mp, mnt, fl) 165 #define XFS_QM_MOUNT(mp, mnt, fl, mfsi_flags) \ 166 (*(mp)->m_qm_ops.xfs_qmmount)(mp, mnt, fl, mfsi_flags) 167 #define XFS_QM_UNMOUNT(mp) \ 168 (*(mp)->m_qm_ops.xfs_qmunmount)(mp) 169 #define XFS_QM_DONE(mp) \ 170 (*(mp)->m_qm_ops.xfs_qmdone)(mp) 171 #define XFS_QM_DQRELE(mp, dq) \ 172 (*(mp)->m_qm_ops.xfs_dqrele)(dq) 173 #define XFS_QM_DQATTACH(mp, ip, fl) \ 174 (*(mp)->m_qm_ops.xfs_dqattach)(ip, fl) 175 #define XFS_QM_DQDETACH(mp, ip) \ 176 (*(mp)->m_qm_ops.xfs_dqdetach)(ip) 177 #define XFS_QM_DQPURGEALL(mp, fl) \ 178 (*(mp)->m_qm_ops.xfs_dqpurgeall)(mp, fl) 179 #define XFS_QM_DQVOPALLOC(mp, ip, uid, gid, prid, fl, dq1, dq2) \ 180 (*(mp)->m_qm_ops.xfs_dqvopalloc)(mp, ip, uid, gid, prid, fl, dq1, dq2) 181 #define XFS_QM_DQVOPCREATE(mp, tp, ip, dq1, dq2) \ 182 (*(mp)->m_qm_ops.xfs_dqvopcreate)(tp, ip, dq1, dq2) 183 #define XFS_QM_DQVOPRENAME(mp, ip) \ 184 (*(mp)->m_qm_ops.xfs_dqvoprename)(ip) 185 #define XFS_QM_DQVOPCHOWN(mp, tp, ip, dqp, dq) \ 186 (*(mp)->m_qm_ops.xfs_dqvopchown)(tp, ip, dqp, dq) 187 #define XFS_QM_DQVOPCHOWNRESV(mp, tp, ip, dq1, dq2, fl) \ 188 (*(mp)->m_qm_ops.xfs_dqvopchownresv)(tp, ip, dq1, dq2, fl) 189 190 191 /* 192 * Prototypes and functions for I/O core modularization. 193 */ 194 195 typedef int (*xfs_ioinit_t)(struct bhv_vfs *, 196 struct xfs_mount_args *, int); 197 typedef int (*xfs_bmapi_t)(struct xfs_trans *, void *, 198 xfs_fileoff_t, xfs_filblks_t, int, 199 xfs_fsblock_t *, xfs_extlen_t, 200 struct xfs_bmbt_irec *, int *, 201 struct xfs_bmap_free *, struct xfs_extdelta *); 202 typedef int (*xfs_bunmapi_t)(struct xfs_trans *, 203 void *, xfs_fileoff_t, 204 xfs_filblks_t, int, xfs_extnum_t, 205 xfs_fsblock_t *, struct xfs_bmap_free *, 206 struct xfs_extdelta *, int *); 207 typedef int (*xfs_bmap_eof_t)(void *, xfs_fileoff_t, int, int *); 208 typedef int (*xfs_iomap_write_direct_t)( 209 void *, xfs_off_t, size_t, int, 210 struct xfs_bmbt_irec *, int *, int); 211 typedef int (*xfs_iomap_write_delay_t)( 212 void *, xfs_off_t, size_t, int, 213 struct xfs_bmbt_irec *, int *); 214 typedef int (*xfs_iomap_write_allocate_t)( 215 void *, xfs_off_t, size_t, 216 struct xfs_bmbt_irec *, int *); 217 typedef int (*xfs_iomap_write_unwritten_t)( 218 void *, xfs_off_t, size_t); 219 typedef uint (*xfs_lck_map_shared_t)(void *); 220 typedef void (*xfs_lock_t)(void *, uint); 221 typedef void (*xfs_lock_demote_t)(void *, uint); 222 typedef int (*xfs_lock_nowait_t)(void *, uint); 223 typedef void (*xfs_unlk_t)(void *, unsigned int); 224 typedef xfs_fsize_t (*xfs_size_t)(void *); 225 typedef xfs_fsize_t (*xfs_iodone_t)(struct bhv_vfs *); 226 typedef int (*xfs_swap_extents_t)(void *, void *, 227 struct xfs_swapext*); 228 229 typedef struct xfs_ioops { 230 xfs_ioinit_t xfs_ioinit; 231 xfs_bmapi_t xfs_bmapi_func; 232 xfs_bunmapi_t xfs_bunmapi_func; 233 xfs_bmap_eof_t xfs_bmap_eof_func; 234 xfs_iomap_write_direct_t xfs_iomap_write_direct; 235 xfs_iomap_write_delay_t xfs_iomap_write_delay; 236 xfs_iomap_write_allocate_t xfs_iomap_write_allocate; 237 xfs_iomap_write_unwritten_t xfs_iomap_write_unwritten; 238 xfs_lock_t xfs_ilock; 239 xfs_lck_map_shared_t xfs_lck_map_shared; 240 xfs_lock_demote_t xfs_ilock_demote; 241 xfs_lock_nowait_t xfs_ilock_nowait; 242 xfs_unlk_t xfs_unlock; 243 xfs_size_t xfs_size_func; 244 xfs_iodone_t xfs_iodone; 245 xfs_swap_extents_t xfs_swap_extents_func; 246 } xfs_ioops_t; 247 248 #define XFS_IOINIT(vfsp, args, flags) \ 249 (*(mp)->m_io_ops.xfs_ioinit)(vfsp, args, flags) 250 #define XFS_BMAPI(mp, trans,io,bno,len,f,first,tot,mval,nmap,flist,delta) \ 251 (*(mp)->m_io_ops.xfs_bmapi_func) \ 252 (trans,(io)->io_obj,bno,len,f,first,tot,mval,nmap,flist,delta) 253 #define XFS_BUNMAPI(mp, trans,io,bno,len,f,nexts,first,flist,delta,done) \ 254 (*(mp)->m_io_ops.xfs_bunmapi_func) \ 255 (trans,(io)->io_obj,bno,len,f,nexts,first,flist,delta,done) 256 #define XFS_BMAP_EOF(mp, io, endoff, whichfork, eof) \ 257 (*(mp)->m_io_ops.xfs_bmap_eof_func) \ 258 ((io)->io_obj, endoff, whichfork, eof) 259 #define XFS_IOMAP_WRITE_DIRECT(mp, io, offset, count, flags, mval, nmap, found)\ 260 (*(mp)->m_io_ops.xfs_iomap_write_direct) \ 261 ((io)->io_obj, offset, count, flags, mval, nmap, found) 262 #define XFS_IOMAP_WRITE_DELAY(mp, io, offset, count, flags, mval, nmap) \ 263 (*(mp)->m_io_ops.xfs_iomap_write_delay) \ 264 ((io)->io_obj, offset, count, flags, mval, nmap) 265 #define XFS_IOMAP_WRITE_ALLOCATE(mp, io, offset, count, mval, nmap) \ 266 (*(mp)->m_io_ops.xfs_iomap_write_allocate) \ 267 ((io)->io_obj, offset, count, mval, nmap) 268 #define XFS_IOMAP_WRITE_UNWRITTEN(mp, io, offset, count) \ 269 (*(mp)->m_io_ops.xfs_iomap_write_unwritten) \ 270 ((io)->io_obj, offset, count) 271 #define XFS_LCK_MAP_SHARED(mp, io) \ 272 (*(mp)->m_io_ops.xfs_lck_map_shared)((io)->io_obj) 273 #define XFS_ILOCK(mp, io, mode) \ 274 (*(mp)->m_io_ops.xfs_ilock)((io)->io_obj, mode) 275 #define XFS_ILOCK_NOWAIT(mp, io, mode) \ 276 (*(mp)->m_io_ops.xfs_ilock_nowait)((io)->io_obj, mode) 277 #define XFS_IUNLOCK(mp, io, mode) \ 278 (*(mp)->m_io_ops.xfs_unlock)((io)->io_obj, mode) 279 #define XFS_ILOCK_DEMOTE(mp, io, mode) \ 280 (*(mp)->m_io_ops.xfs_ilock_demote)((io)->io_obj, mode) 281 #define XFS_SIZE(mp, io) \ 282 (*(mp)->m_io_ops.xfs_size_func)((io)->io_obj) 283 #define XFS_IODONE(vfsp) \ 284 (*(mp)->m_io_ops.xfs_iodone)(vfsp) 285 #define XFS_SWAP_EXTENTS(mp, io, tio, sxp) \ 286 (*(mp)->m_io_ops.xfs_swap_extents_func) \ 287 ((io)->io_obj, (tio)->io_obj, sxp) 288 289 #ifdef HAVE_PERCPU_SB 290 291 /* 292 * Valid per-cpu incore superblock counters. Note that if you add new counters, 293 * you may need to define new counter disabled bit field descriptors as there 294 * are more possible fields in the superblock that can fit in a bitfield on a 295 * 32 bit platform. The XFS_SBS_* values for the current current counters just 296 * fit. 297 */ 298 typedef struct xfs_icsb_cnts { 299 uint64_t icsb_fdblocks; 300 uint64_t icsb_ifree; 301 uint64_t icsb_icount; 302 unsigned long icsb_flags; 303 } xfs_icsb_cnts_t; 304 305 #define XFS_ICSB_FLAG_LOCK (1 << 0) /* counter lock bit */ 306 307 #define XFS_ICSB_SB_LOCKED (1 << 0) /* sb already locked */ 308 #define XFS_ICSB_LAZY_COUNT (1 << 1) /* accuracy not needed */ 309 310 extern int xfs_icsb_init_counters(struct xfs_mount *); 311 extern void xfs_icsb_reinit_counters(struct xfs_mount *); 312 extern void xfs_icsb_sync_counters_flags(struct xfs_mount *, int); 313 314 #else 315 #define xfs_icsb_init_counters(mp) (0) 316 #define xfs_icsb_reinit_counters(mp) do { } while (0) 317 #define xfs_icsb_sync_counters_flags(mp, flags) do { } while (0) 318 #endif 319 320 typedef struct xfs_mount { 321 bhv_desc_t m_bhv; /* vfs xfs behavior */ 322 xfs_tid_t m_tid; /* next unused tid for fs */ 323 AIL_LOCK_T m_ail_lock; /* fs AIL mutex */ 324 xfs_ail_entry_t m_ail; /* fs active log item list */ 325 uint m_ail_gen; /* fs AIL generation count */ 326 xfs_sb_t m_sb; /* copy of fs superblock */ 327 lock_t m_sb_lock; /* sb counter mutex */ 328 struct xfs_buf *m_sb_bp; /* buffer for superblock */ 329 char *m_fsname; /* filesystem name */ 330 int m_fsname_len; /* strlen of fs name */ 331 char *m_rtname; /* realtime device name */ 332 char *m_logname; /* external log device name */ 333 int m_bsize; /* fs logical block size */ 334 xfs_agnumber_t m_agfrotor; /* last ag where space found */ 335 xfs_agnumber_t m_agirotor; /* last ag dir inode alloced */ 336 lock_t m_agirotor_lock;/* .. and lock protecting it */ 337 xfs_agnumber_t m_maxagi; /* highest inode alloc group */ 338 size_t m_ihsize; /* size of next field */ 339 struct xfs_ihash *m_ihash; /* fs private inode hash table*/ 340 struct xfs_inode *m_inodes; /* active inode list */ 341 struct list_head m_del_inodes; /* inodes to reclaim */ 342 mutex_t m_ilock; /* inode list mutex */ 343 uint m_ireclaims; /* count of calls to reclaim*/ 344 uint m_readio_log; /* min read size log bytes */ 345 uint m_readio_blocks; /* min read size blocks */ 346 uint m_writeio_log; /* min write size log bytes */ 347 uint m_writeio_blocks; /* min write size blocks */ 348 struct log *m_log; /* log specific stuff */ 349 int m_logbufs; /* number of log buffers */ 350 int m_logbsize; /* size of each log buffer */ 351 uint m_rsumlevels; /* rt summary levels */ 352 uint m_rsumsize; /* size of rt summary, bytes */ 353 struct xfs_inode *m_rbmip; /* pointer to bitmap inode */ 354 struct xfs_inode *m_rsumip; /* pointer to summary inode */ 355 struct xfs_inode *m_rootip; /* pointer to root directory */ 356 struct xfs_quotainfo *m_quotainfo; /* disk quota information */ 357 xfs_buftarg_t *m_ddev_targp; /* saves taking the address */ 358 xfs_buftarg_t *m_logdev_targp;/* ptr to log device */ 359 xfs_buftarg_t *m_rtdev_targp; /* ptr to rt device */ 360 __uint8_t m_dircook_elog; /* log d-cookie entry bits */ 361 __uint8_t m_blkbit_log; /* blocklog + NBBY */ 362 __uint8_t m_blkbb_log; /* blocklog - BBSHIFT */ 363 __uint8_t m_agno_log; /* log #ag's */ 364 __uint8_t m_agino_log; /* #bits for agino in inum */ 365 __uint8_t m_nreadaheads; /* #readahead buffers */ 366 __uint16_t m_inode_cluster_size;/* min inode buf size */ 367 uint m_blockmask; /* sb_blocksize-1 */ 368 uint m_blockwsize; /* sb_blocksize in words */ 369 uint m_blockwmask; /* blockwsize-1 */ 370 uint m_alloc_mxr[2]; /* XFS_ALLOC_BLOCK_MAXRECS */ 371 uint m_alloc_mnr[2]; /* XFS_ALLOC_BLOCK_MINRECS */ 372 uint m_bmap_dmxr[2]; /* XFS_BMAP_BLOCK_DMAXRECS */ 373 uint m_bmap_dmnr[2]; /* XFS_BMAP_BLOCK_DMINRECS */ 374 uint m_inobt_mxr[2]; /* XFS_INOBT_BLOCK_MAXRECS */ 375 uint m_inobt_mnr[2]; /* XFS_INOBT_BLOCK_MINRECS */ 376 uint m_ag_maxlevels; /* XFS_AG_MAXLEVELS */ 377 uint m_bm_maxlevels[2]; /* XFS_BM_MAXLEVELS */ 378 uint m_in_maxlevels; /* XFS_IN_MAXLEVELS */ 379 struct xfs_perag *m_perag; /* per-ag accounting info */ 380 struct rw_semaphore m_peraglock; /* lock for m_perag (pointer) */ 381 sema_t m_growlock; /* growfs mutex */ 382 int m_fixedfsid[2]; /* unchanged for life of FS */ 383 uint m_dmevmask; /* DMI events for this FS */ 384 __uint64_t m_flags; /* global mount flags */ 385 uint m_attroffset; /* inode attribute offset */ 386 uint m_dir_node_ents; /* #entries in a dir danode */ 387 uint m_attr_node_ents; /* #entries in attr danode */ 388 int m_ialloc_inos; /* inodes in inode allocation */ 389 int m_ialloc_blks; /* blocks in inode allocation */ 390 int m_litino; /* size of inode union area */ 391 int m_inoalign_mask;/* mask sb_inoalignmt if used */ 392 uint m_qflags; /* quota status flags */ 393 xfs_trans_reservations_t m_reservations;/* precomputed res values */ 394 __uint64_t m_maxicount; /* maximum inode count */ 395 __uint64_t m_maxioffset; /* maximum inode offset */ 396 __uint64_t m_resblks; /* total reserved blocks */ 397 __uint64_t m_resblks_avail;/* available reserved blocks */ 398 #if XFS_BIG_INUMS 399 xfs_ino_t m_inoadd; /* add value for ino64_offset */ 400 #endif 401 int m_dalign; /* stripe unit */ 402 int m_swidth; /* stripe width */ 403 int m_sinoalign; /* stripe unit inode alignment */ 404 int m_attr_magicpct;/* 37% of the blocksize */ 405 int m_dir_magicpct; /* 37% of the dir blocksize */ 406 __uint8_t m_mk_sharedro; /* mark shared ro on unmount */ 407 __uint8_t m_inode_quiesce;/* call quiesce on new inodes. 408 field governed by m_ilock */ 409 __uint8_t m_sectbb_log; /* sectlog - BBSHIFT */ 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 struct mutex m_icsb_mutex; /* balancer sync lock */ 427 #endif 428 struct xfs_mru_cache *m_filestream; /* per-mount filestream data */ 429 } xfs_mount_t; 430 431 /* 432 * Flags for m_flags. 433 */ 434 #define XFS_MOUNT_WSYNC (1ULL << 0) /* for nfs - all metadata ops 435 must be synchronous except 436 for space allocations */ 437 #define XFS_MOUNT_INO64 (1ULL << 1) 438 /* (1ULL << 2) -- currently unused */ 439 #define XFS_MOUNT_WAS_CLEAN (1ULL << 3) 440 #define XFS_MOUNT_FS_SHUTDOWN (1ULL << 4) /* atomic stop of all filesystem 441 operations, typically for 442 disk errors in metadata */ 443 #define XFS_MOUNT_RETERR (1ULL << 6) /* return alignment errors to 444 user */ 445 #define XFS_MOUNT_NOALIGN (1ULL << 7) /* turn off stripe alignment 446 allocations */ 447 #define XFS_MOUNT_ATTR2 (1ULL << 8) /* allow use of attr2 format */ 448 /* (1ULL << 9) -- currently unused */ 449 #define XFS_MOUNT_NORECOVERY (1ULL << 10) /* no recovery - dirty fs */ 450 #define XFS_MOUNT_SHARED (1ULL << 11) /* shared mount */ 451 #define XFS_MOUNT_DFLT_IOSIZE (1ULL << 12) /* set default i/o size */ 452 #define XFS_MOUNT_OSYNCISOSYNC (1ULL << 13) /* o_sync is REALLY o_sync */ 453 /* osyncisdsync is now default*/ 454 #define XFS_MOUNT_32BITINODES (1ULL << 14) /* do not create inodes above 455 * 32 bits in size */ 456 /* (1ULL << 15) -- currently unused */ 457 #define XFS_MOUNT_NOUUID (1ULL << 16) /* ignore uuid during mount */ 458 #define XFS_MOUNT_BARRIER (1ULL << 17) 459 #define XFS_MOUNT_IDELETE (1ULL << 18) /* delete empty inode clusters*/ 460 #define XFS_MOUNT_SWALLOC (1ULL << 19) /* turn on stripe width 461 * allocation */ 462 #define XFS_MOUNT_IHASHSIZE (1ULL << 20) /* inode hash table size */ 463 #define XFS_MOUNT_DIRSYNC (1ULL << 21) /* synchronous directory ops */ 464 #define XFS_MOUNT_COMPAT_IOSIZE (1ULL << 22) /* don't report large preferred 465 * I/O size in stat() */ 466 #define XFS_MOUNT_NO_PERCPU_SB (1ULL << 23) /* don't use per-cpu superblock 467 counters */ 468 #define XFS_MOUNT_FILESTREAMS (1ULL << 24) /* enable the filestreams 469 allocator */ 470 471 472 /* 473 * Default minimum read and write sizes. 474 */ 475 #define XFS_READIO_LOG_LARGE 16 476 #define XFS_WRITEIO_LOG_LARGE 16 477 478 /* 479 * Max and min values for mount-option defined I/O 480 * preallocation sizes. 481 */ 482 #define XFS_MAX_IO_LOG 30 /* 1G */ 483 #define XFS_MIN_IO_LOG PAGE_SHIFT 484 485 /* 486 * Synchronous read and write sizes. This should be 487 * better for NFSv2 wsync filesystems. 488 */ 489 #define XFS_WSYNC_READIO_LOG 15 /* 32K */ 490 #define XFS_WSYNC_WRITEIO_LOG 14 /* 16K */ 491 492 /* 493 * Allow large block sizes to be reported to userspace programs if the 494 * "largeio" mount option is used. 495 * 496 * If compatibility mode is specified, simply return the basic unit of caching 497 * so that we don't get inefficient read/modify/write I/O from user apps. 498 * Otherwise.... 499 * 500 * If the underlying volume is a stripe, then return the stripe width in bytes 501 * as the recommended I/O size. It is not a stripe and we've set a default 502 * buffered I/O size, return that, otherwise return the compat default. 503 */ 504 static inline unsigned long 505 xfs_preferred_iosize(xfs_mount_t *mp) 506 { 507 if (mp->m_flags & XFS_MOUNT_COMPAT_IOSIZE) 508 return PAGE_CACHE_SIZE; 509 return (mp->m_swidth ? 510 (mp->m_swidth << mp->m_sb.sb_blocklog) : 511 ((mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) ? 512 (1 << (int)MAX(mp->m_readio_log, mp->m_writeio_log)) : 513 PAGE_CACHE_SIZE)); 514 } 515 516 #define XFS_MAXIOFFSET(mp) ((mp)->m_maxioffset) 517 518 #define XFS_LAST_UNMOUNT_WAS_CLEAN(mp) \ 519 ((mp)->m_flags & XFS_MOUNT_WAS_CLEAN) 520 #define XFS_FORCED_SHUTDOWN(mp) ((mp)->m_flags & XFS_MOUNT_FS_SHUTDOWN) 521 #define xfs_force_shutdown(m,f) \ 522 bhv_vfs_force_shutdown((XFS_MTOVFS(m)), f, __FILE__, __LINE__) 523 524 /* 525 * Flags for xfs_mountfs 526 */ 527 #define XFS_MFSI_SECOND 0x01 /* Secondary mount -- skip stuff */ 528 #define XFS_MFSI_CLIENT 0x02 /* Is a client -- skip lots of stuff */ 529 /* XFS_MFSI_RRINODES */ 530 #define XFS_MFSI_NOUNLINK 0x08 /* Skip unlinked inode processing in */ 531 /* log recovery */ 532 #define XFS_MFSI_NO_QUOTACHECK 0x10 /* Skip quotacheck processing */ 533 /* XFS_MFSI_CONVERT_SUNIT */ 534 #define XFS_MFSI_QUIET 0x40 /* Be silent if mount errors found */ 535 536 /* 537 * Macros for getting from mount to vfs and back. 538 */ 539 #define XFS_MTOVFS(mp) xfs_mtovfs(mp) 540 static inline struct bhv_vfs *xfs_mtovfs(xfs_mount_t *mp) 541 { 542 return bhvtovfs(&mp->m_bhv); 543 } 544 545 #define XFS_BHVTOM(bdp) xfs_bhvtom(bdp) 546 static inline xfs_mount_t *xfs_bhvtom(bhv_desc_t *bdp) 547 { 548 return (xfs_mount_t *)BHV_PDATA(bdp); 549 } 550 551 #define XFS_VFSTOM(vfs) xfs_vfstom(vfs) 552 static inline xfs_mount_t *xfs_vfstom(bhv_vfs_t *vfs) 553 { 554 return XFS_BHVTOM(bhv_lookup_range(VFS_BHVHEAD(vfs), 555 VFS_POSITION_XFS, VFS_POSITION_XFS)); 556 } 557 558 #define XFS_DADDR_TO_AGNO(mp,d) xfs_daddr_to_agno(mp,d) 559 static inline xfs_agnumber_t 560 xfs_daddr_to_agno(struct xfs_mount *mp, xfs_daddr_t d) 561 { 562 xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d); 563 do_div(ld, mp->m_sb.sb_agblocks); 564 return (xfs_agnumber_t) ld; 565 } 566 567 #define XFS_DADDR_TO_AGBNO(mp,d) xfs_daddr_to_agbno(mp,d) 568 static inline xfs_agblock_t 569 xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d) 570 { 571 xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d); 572 return (xfs_agblock_t) do_div(ld, mp->m_sb.sb_agblocks); 573 } 574 575 /* 576 * Per-cpu superblock locking functions 577 */ 578 #ifdef HAVE_PERCPU_SB 579 STATIC_INLINE void 580 xfs_icsb_lock(xfs_mount_t *mp) 581 { 582 mutex_lock(&mp->m_icsb_mutex); 583 } 584 585 STATIC_INLINE void 586 xfs_icsb_unlock(xfs_mount_t *mp) 587 { 588 mutex_unlock(&mp->m_icsb_mutex); 589 } 590 #else 591 #define xfs_icsb_lock(mp) 592 #define xfs_icsb_unlock(mp) 593 #endif 594 595 /* 596 * This structure is for use by the xfs_mod_incore_sb_batch() routine. 597 * xfs_growfs can specify a few fields which are more than int limit 598 */ 599 typedef struct xfs_mod_sb { 600 xfs_sb_field_t msb_field; /* Field to modify, see below */ 601 int64_t msb_delta; /* Change to make to specified field */ 602 } xfs_mod_sb_t; 603 604 #define XFS_MOUNT_ILOCK(mp) mutex_lock(&((mp)->m_ilock)) 605 #define XFS_MOUNT_IUNLOCK(mp) mutex_unlock(&((mp)->m_ilock)) 606 #define XFS_SB_LOCK(mp) mutex_spinlock(&(mp)->m_sb_lock) 607 #define XFS_SB_UNLOCK(mp,s) mutex_spinunlock(&(mp)->m_sb_lock,(s)) 608 609 extern xfs_mount_t *xfs_mount_init(void); 610 extern void xfs_mod_sb(xfs_trans_t *, __int64_t); 611 extern int xfs_log_sbcount(xfs_mount_t *, uint); 612 extern void xfs_mount_free(xfs_mount_t *mp, int remove_bhv); 613 extern int xfs_mountfs(struct bhv_vfs *, xfs_mount_t *mp, int); 614 extern void xfs_mountfs_check_barriers(xfs_mount_t *mp); 615 616 extern int xfs_unmountfs(xfs_mount_t *, struct cred *); 617 extern void xfs_unmountfs_close(xfs_mount_t *, struct cred *); 618 extern int xfs_unmountfs_writesb(xfs_mount_t *); 619 extern int xfs_unmount_flush(xfs_mount_t *, int); 620 extern int xfs_mod_incore_sb(xfs_mount_t *, xfs_sb_field_t, int64_t, int); 621 extern int xfs_mod_incore_sb_unlocked(xfs_mount_t *, xfs_sb_field_t, 622 int64_t, int); 623 extern int xfs_mod_incore_sb_batch(xfs_mount_t *, xfs_mod_sb_t *, 624 uint, int); 625 extern struct xfs_buf *xfs_getsb(xfs_mount_t *, int); 626 extern int xfs_readsb(xfs_mount_t *, int); 627 extern void xfs_freesb(xfs_mount_t *); 628 extern int xfs_fs_writable(xfs_mount_t *); 629 extern void xfs_do_force_shutdown(bhv_desc_t *, int, char *, int); 630 extern int xfs_syncsub(xfs_mount_t *, int, int *); 631 extern int xfs_sync_inodes(xfs_mount_t *, int, int *); 632 extern xfs_agnumber_t xfs_initialize_perag(struct bhv_vfs *, xfs_mount_t *, 633 xfs_agnumber_t); 634 extern void xfs_xlatesb(void *, struct xfs_sb *, int, __int64_t); 635 extern int xfs_sb_validate_fsb_count(struct xfs_sb *, __uint64_t); 636 637 extern struct xfs_dmops xfs_dmcore_stub; 638 extern struct xfs_qmops xfs_qmcore_stub; 639 extern struct xfs_ioops xfs_iocore_xfs; 640 641 extern int xfs_init(void); 642 extern void xfs_cleanup(void); 643 644 #endif /* __KERNEL__ */ 645 646 #endif /* __XFS_MOUNT_H__ */ 647