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_iocore; 60 struct xfs_bmbt_irec; 61 struct xfs_bmap_free; 62 struct xfs_extdelta; 63 struct xfs_swapext; 64 struct xfs_mru_cache; 65 66 #define AIL_LOCK_T lock_t 67 #define AIL_LOCKINIT(x,y) spinlock_init(x,y) 68 #define AIL_LOCK_DESTROY(x) spinlock_destroy(x) 69 #define AIL_LOCK(mp,s) s=mutex_spinlock(&(mp)->m_ail_lock) 70 #define AIL_UNLOCK(mp,s) mutex_spinunlock(&(mp)->m_ail_lock, s) 71 72 73 /* 74 * Prototypes and functions for the Data Migration subsystem. 75 */ 76 77 typedef int (*xfs_send_data_t)(int, bhv_vnode_t *, 78 xfs_off_t, size_t, int, bhv_vrwlock_t *); 79 typedef int (*xfs_send_mmap_t)(struct vm_area_struct *, uint); 80 typedef int (*xfs_send_destroy_t)(bhv_vnode_t *, dm_right_t); 81 typedef int (*xfs_send_namesp_t)(dm_eventtype_t, struct xfs_mount *, 82 bhv_vnode_t *, 83 dm_right_t, bhv_vnode_t *, dm_right_t, 84 char *, char *, mode_t, int, int); 85 typedef int (*xfs_send_mount_t)(struct xfs_mount *, dm_right_t, 86 char *, char *); 87 typedef void (*xfs_send_unmount_t)(struct xfs_mount *, bhv_vnode_t *, 88 dm_right_t, mode_t, int, int); 89 90 typedef struct xfs_dmops { 91 xfs_send_data_t xfs_send_data; 92 xfs_send_mmap_t xfs_send_mmap; 93 xfs_send_destroy_t xfs_send_destroy; 94 xfs_send_namesp_t xfs_send_namesp; 95 xfs_send_mount_t xfs_send_mount; 96 xfs_send_unmount_t xfs_send_unmount; 97 } xfs_dmops_t; 98 99 #define XFS_SEND_DATA(mp, ev,vp,off,len,fl,lock) \ 100 (*(mp)->m_dm_ops->xfs_send_data)(ev,vp,off,len,fl,lock) 101 #define XFS_SEND_MMAP(mp, vma,fl) \ 102 (*(mp)->m_dm_ops->xfs_send_mmap)(vma,fl) 103 #define XFS_SEND_DESTROY(mp, vp,right) \ 104 (*(mp)->m_dm_ops->xfs_send_destroy)(vp,right) 105 #define XFS_SEND_NAMESP(mp, ev,b1,r1,b2,r2,n1,n2,mode,rval,fl) \ 106 (*(mp)->m_dm_ops->xfs_send_namesp)(ev,NULL,b1,r1,b2,r2,n1,n2,mode,rval,fl) 107 #define XFS_SEND_PREUNMOUNT(mp,b1,r1,b2,r2,n1,n2,mode,rval,fl) \ 108 (*(mp)->m_dm_ops->xfs_send_namesp)(DM_EVENT_PREUNMOUNT,mp,b1,r1,b2,r2,n1,n2,mode,rval,fl) 109 #define XFS_SEND_MOUNT(mp,right,path,name) \ 110 (*(mp)->m_dm_ops->xfs_send_mount)(mp,right,path,name) 111 #define XFS_SEND_UNMOUNT(mp, vp,right,mode,rval,fl) \ 112 (*(mp)->m_dm_ops->xfs_send_unmount)(mp,vp,right,mode,rval,fl) 113 114 115 /* 116 * Prototypes and functions for the Quota Management subsystem. 117 */ 118 119 struct xfs_dquot; 120 struct xfs_dqtrxops; 121 struct xfs_quotainfo; 122 123 typedef int (*xfs_qminit_t)(struct xfs_mount *, uint *, uint *); 124 typedef int (*xfs_qmmount_t)(struct xfs_mount *, uint, uint, int); 125 typedef int (*xfs_qmunmount_t)(struct xfs_mount *); 126 typedef void (*xfs_qmdone_t)(struct xfs_mount *); 127 typedef void (*xfs_dqrele_t)(struct xfs_dquot *); 128 typedef int (*xfs_dqattach_t)(struct xfs_inode *, uint); 129 typedef void (*xfs_dqdetach_t)(struct xfs_inode *); 130 typedef int (*xfs_dqpurgeall_t)(struct xfs_mount *, uint); 131 typedef int (*xfs_dqvopalloc_t)(struct xfs_mount *, 132 struct xfs_inode *, uid_t, gid_t, prid_t, uint, 133 struct xfs_dquot **, struct xfs_dquot **); 134 typedef void (*xfs_dqvopcreate_t)(struct xfs_trans *, struct xfs_inode *, 135 struct xfs_dquot *, struct xfs_dquot *); 136 typedef int (*xfs_dqvoprename_t)(struct xfs_inode **); 137 typedef struct xfs_dquot * (*xfs_dqvopchown_t)( 138 struct xfs_trans *, struct xfs_inode *, 139 struct xfs_dquot **, struct xfs_dquot *); 140 typedef int (*xfs_dqvopchownresv_t)(struct xfs_trans *, struct xfs_inode *, 141 struct xfs_dquot *, struct xfs_dquot *, uint); 142 typedef void (*xfs_dqstatvfs_t)(struct xfs_inode *, bhv_statvfs_t *); 143 typedef int (*xfs_dqsync_t)(struct xfs_mount *, int flags); 144 typedef int (*xfs_quotactl_t)(struct xfs_mount *, int, int, xfs_caddr_t); 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 xfs_dqstatvfs_t xfs_dqstatvfs; 161 xfs_dqsync_t xfs_dqsync; 162 xfs_quotactl_t xfs_quotactl; 163 struct xfs_dqtrxops *xfs_dqtrxops; 164 } xfs_qmops_t; 165 166 #define XFS_QM_INIT(mp, mnt, fl) \ 167 (*(mp)->m_qm_ops->xfs_qminit)(mp, mnt, fl) 168 #define XFS_QM_MOUNT(mp, mnt, fl, mfsi_flags) \ 169 (*(mp)->m_qm_ops->xfs_qmmount)(mp, mnt, fl, mfsi_flags) 170 #define XFS_QM_UNMOUNT(mp) \ 171 (*(mp)->m_qm_ops->xfs_qmunmount)(mp) 172 #define XFS_QM_DONE(mp) \ 173 (*(mp)->m_qm_ops->xfs_qmdone)(mp) 174 #define XFS_QM_DQRELE(mp, dq) \ 175 (*(mp)->m_qm_ops->xfs_dqrele)(dq) 176 #define XFS_QM_DQATTACH(mp, ip, fl) \ 177 (*(mp)->m_qm_ops->xfs_dqattach)(ip, fl) 178 #define XFS_QM_DQDETACH(mp, ip) \ 179 (*(mp)->m_qm_ops->xfs_dqdetach)(ip) 180 #define XFS_QM_DQPURGEALL(mp, fl) \ 181 (*(mp)->m_qm_ops->xfs_dqpurgeall)(mp, fl) 182 #define XFS_QM_DQVOPALLOC(mp, ip, uid, gid, prid, fl, dq1, dq2) \ 183 (*(mp)->m_qm_ops->xfs_dqvopalloc)(mp, ip, uid, gid, prid, fl, dq1, dq2) 184 #define XFS_QM_DQVOPCREATE(mp, tp, ip, dq1, dq2) \ 185 (*(mp)->m_qm_ops->xfs_dqvopcreate)(tp, ip, dq1, dq2) 186 #define XFS_QM_DQVOPRENAME(mp, ip) \ 187 (*(mp)->m_qm_ops->xfs_dqvoprename)(ip) 188 #define XFS_QM_DQVOPCHOWN(mp, tp, ip, dqp, dq) \ 189 (*(mp)->m_qm_ops->xfs_dqvopchown)(tp, ip, dqp, dq) 190 #define XFS_QM_DQVOPCHOWNRESV(mp, tp, ip, dq1, dq2, fl) \ 191 (*(mp)->m_qm_ops->xfs_dqvopchownresv)(tp, ip, dq1, dq2, fl) 192 #define XFS_QM_DQSTATVFS(ip, statp) \ 193 (*(ip)->i_mount->m_qm_ops->xfs_dqstatvfs)(ip, statp) 194 #define XFS_QM_DQSYNC(mp, flags) \ 195 (*(mp)->m_qm_ops->xfs_dqsync)(mp, flags) 196 #define XFS_QM_QUOTACTL(mp, cmd, id, addr) \ 197 (*(mp)->m_qm_ops->xfs_quotactl)(mp, cmd, id, addr) 198 199 200 /* 201 * Prototypes and functions for I/O core modularization. 202 */ 203 204 typedef int (*xfs_ioinit_t)(struct xfs_mount *, 205 struct xfs_mount_args *, int); 206 typedef int (*xfs_bmapi_t)(struct xfs_trans *, void *, 207 xfs_fileoff_t, xfs_filblks_t, int, 208 xfs_fsblock_t *, xfs_extlen_t, 209 struct xfs_bmbt_irec *, int *, 210 struct xfs_bmap_free *, struct xfs_extdelta *); 211 typedef int (*xfs_bunmapi_t)(struct xfs_trans *, 212 void *, xfs_fileoff_t, 213 xfs_filblks_t, int, xfs_extnum_t, 214 xfs_fsblock_t *, struct xfs_bmap_free *, 215 struct xfs_extdelta *, int *); 216 typedef int (*xfs_bmap_eof_t)(void *, xfs_fileoff_t, int, int *); 217 typedef int (*xfs_iomap_write_direct_t)( 218 void *, xfs_off_t, size_t, int, 219 struct xfs_bmbt_irec *, int *, int); 220 typedef int (*xfs_iomap_write_delay_t)( 221 void *, xfs_off_t, size_t, int, 222 struct xfs_bmbt_irec *, int *); 223 typedef int (*xfs_iomap_write_allocate_t)( 224 void *, xfs_off_t, size_t, 225 struct xfs_bmbt_irec *, int *); 226 typedef int (*xfs_iomap_write_unwritten_t)( 227 void *, xfs_off_t, size_t); 228 typedef uint (*xfs_lck_map_shared_t)(void *); 229 typedef void (*xfs_lock_t)(void *, uint); 230 typedef void (*xfs_lock_demote_t)(void *, uint); 231 typedef int (*xfs_lock_nowait_t)(void *, uint); 232 typedef void (*xfs_unlk_t)(void *, unsigned int); 233 typedef xfs_fsize_t (*xfs_size_t)(void *); 234 typedef xfs_fsize_t (*xfs_iodone_t)(struct xfs_mount *); 235 typedef int (*xfs_swap_extents_t)(void *, void *, 236 struct xfs_swapext*); 237 238 typedef struct xfs_ioops { 239 xfs_ioinit_t xfs_ioinit; 240 xfs_bmapi_t xfs_bmapi_func; 241 xfs_bunmapi_t xfs_bunmapi_func; 242 xfs_bmap_eof_t xfs_bmap_eof_func; 243 xfs_iomap_write_direct_t xfs_iomap_write_direct; 244 xfs_iomap_write_delay_t xfs_iomap_write_delay; 245 xfs_iomap_write_allocate_t xfs_iomap_write_allocate; 246 xfs_iomap_write_unwritten_t xfs_iomap_write_unwritten; 247 xfs_lock_t xfs_ilock; 248 xfs_lck_map_shared_t xfs_lck_map_shared; 249 xfs_lock_demote_t xfs_ilock_demote; 250 xfs_lock_nowait_t xfs_ilock_nowait; 251 xfs_unlk_t xfs_unlock; 252 xfs_size_t xfs_size_func; 253 xfs_iodone_t xfs_iodone; 254 xfs_swap_extents_t xfs_swap_extents_func; 255 } xfs_ioops_t; 256 257 #define XFS_IOINIT(mp, args, flags) \ 258 (*(mp)->m_io_ops.xfs_ioinit)(mp, args, flags) 259 #define XFS_BMAPI(mp, trans,io,bno,len,f,first,tot,mval,nmap,flist,delta) \ 260 (*(mp)->m_io_ops.xfs_bmapi_func) \ 261 (trans,(io)->io_obj,bno,len,f,first,tot,mval,nmap,flist,delta) 262 #define XFS_BUNMAPI(mp, trans,io,bno,len,f,nexts,first,flist,delta,done) \ 263 (*(mp)->m_io_ops.xfs_bunmapi_func) \ 264 (trans,(io)->io_obj,bno,len,f,nexts,first,flist,delta,done) 265 #define XFS_BMAP_EOF(mp, io, endoff, whichfork, eof) \ 266 (*(mp)->m_io_ops.xfs_bmap_eof_func) \ 267 ((io)->io_obj, endoff, whichfork, eof) 268 #define XFS_IOMAP_WRITE_DIRECT(mp, io, offset, count, flags, mval, nmap, found)\ 269 (*(mp)->m_io_ops.xfs_iomap_write_direct) \ 270 ((io)->io_obj, offset, count, flags, mval, nmap, found) 271 #define XFS_IOMAP_WRITE_DELAY(mp, io, offset, count, flags, mval, nmap) \ 272 (*(mp)->m_io_ops.xfs_iomap_write_delay) \ 273 ((io)->io_obj, offset, count, flags, mval, nmap) 274 #define XFS_IOMAP_WRITE_ALLOCATE(mp, io, offset, count, mval, nmap) \ 275 (*(mp)->m_io_ops.xfs_iomap_write_allocate) \ 276 ((io)->io_obj, offset, count, mval, nmap) 277 #define XFS_IOMAP_WRITE_UNWRITTEN(mp, io, offset, count) \ 278 (*(mp)->m_io_ops.xfs_iomap_write_unwritten) \ 279 ((io)->io_obj, offset, count) 280 #define XFS_LCK_MAP_SHARED(mp, io) \ 281 (*(mp)->m_io_ops.xfs_lck_map_shared)((io)->io_obj) 282 #define XFS_ILOCK(mp, io, mode) \ 283 (*(mp)->m_io_ops.xfs_ilock)((io)->io_obj, mode) 284 #define XFS_ILOCK_NOWAIT(mp, io, mode) \ 285 (*(mp)->m_io_ops.xfs_ilock_nowait)((io)->io_obj, mode) 286 #define XFS_IUNLOCK(mp, io, mode) \ 287 (*(mp)->m_io_ops.xfs_unlock)((io)->io_obj, mode) 288 #define XFS_ILOCK_DEMOTE(mp, io, mode) \ 289 (*(mp)->m_io_ops.xfs_ilock_demote)((io)->io_obj, mode) 290 #define XFS_SIZE(mp, io) \ 291 (*(mp)->m_io_ops.xfs_size_func)((io)->io_obj) 292 #define XFS_IODONE(mp) \ 293 (*(mp)->m_io_ops.xfs_iodone)(mp) 294 #define XFS_SWAP_EXTENTS(mp, io, tio, sxp) \ 295 (*(mp)->m_io_ops.xfs_swap_extents_func) \ 296 ((io)->io_obj, (tio)->io_obj, sxp) 297 298 #ifdef HAVE_PERCPU_SB 299 300 /* 301 * Valid per-cpu incore superblock counters. Note that if you add new counters, 302 * you may need to define new counter disabled bit field descriptors as there 303 * are more possible fields in the superblock that can fit in a bitfield on a 304 * 32 bit platform. The XFS_SBS_* values for the current current counters just 305 * fit. 306 */ 307 typedef struct xfs_icsb_cnts { 308 uint64_t icsb_fdblocks; 309 uint64_t icsb_ifree; 310 uint64_t icsb_icount; 311 unsigned long icsb_flags; 312 } xfs_icsb_cnts_t; 313 314 #define XFS_ICSB_FLAG_LOCK (1 << 0) /* counter lock bit */ 315 316 #define XFS_ICSB_SB_LOCKED (1 << 0) /* sb already locked */ 317 #define XFS_ICSB_LAZY_COUNT (1 << 1) /* accuracy not needed */ 318 319 extern int xfs_icsb_init_counters(struct xfs_mount *); 320 extern void xfs_icsb_reinit_counters(struct xfs_mount *); 321 extern void xfs_icsb_sync_counters_flags(struct xfs_mount *, int); 322 323 #else 324 #define xfs_icsb_init_counters(mp) (0) 325 #define xfs_icsb_reinit_counters(mp) do { } while (0) 326 #define xfs_icsb_sync_counters_flags(mp, flags) do { } while (0) 327 #endif 328 329 typedef struct xfs_mount { 330 struct super_block *m_super; 331 xfs_tid_t m_tid; /* next unused tid for fs */ 332 AIL_LOCK_T m_ail_lock; /* fs AIL mutex */ 333 xfs_ail_entry_t m_ail; /* fs active log item list */ 334 uint m_ail_gen; /* fs AIL generation count */ 335 xfs_sb_t m_sb; /* copy of fs superblock */ 336 lock_t m_sb_lock; /* sb counter mutex */ 337 struct xfs_buf *m_sb_bp; /* buffer for superblock */ 338 char *m_fsname; /* filesystem name */ 339 int m_fsname_len; /* strlen of fs name */ 340 char *m_rtname; /* realtime device name */ 341 char *m_logname; /* external log device name */ 342 int m_bsize; /* fs logical block size */ 343 xfs_agnumber_t m_agfrotor; /* last ag where space found */ 344 xfs_agnumber_t m_agirotor; /* last ag dir inode alloced */ 345 lock_t m_agirotor_lock;/* .. and lock protecting it */ 346 xfs_agnumber_t m_maxagi; /* highest inode alloc group */ 347 struct xfs_inode *m_inodes; /* active inode list */ 348 struct list_head m_del_inodes; /* inodes to reclaim */ 349 mutex_t m_ilock; /* inode list mutex */ 350 uint m_ireclaims; /* count of calls to reclaim*/ 351 uint m_readio_log; /* min read size log bytes */ 352 uint m_readio_blocks; /* min read size blocks */ 353 uint m_writeio_log; /* min write size log bytes */ 354 uint m_writeio_blocks; /* min write size blocks */ 355 struct log *m_log; /* log specific stuff */ 356 int m_logbufs; /* number of log buffers */ 357 int m_logbsize; /* size of each log buffer */ 358 uint m_rsumlevels; /* rt summary levels */ 359 uint m_rsumsize; /* size of rt summary, bytes */ 360 struct xfs_inode *m_rbmip; /* pointer to bitmap inode */ 361 struct xfs_inode *m_rsumip; /* pointer to summary inode */ 362 struct xfs_inode *m_rootip; /* pointer to root directory */ 363 struct xfs_quotainfo *m_quotainfo; /* disk quota information */ 364 xfs_buftarg_t *m_ddev_targp; /* saves taking the address */ 365 xfs_buftarg_t *m_logdev_targp;/* ptr to log device */ 366 xfs_buftarg_t *m_rtdev_targp; /* ptr to rt device */ 367 __uint8_t m_dircook_elog; /* log d-cookie entry bits */ 368 __uint8_t m_blkbit_log; /* blocklog + NBBY */ 369 __uint8_t m_blkbb_log; /* blocklog - BBSHIFT */ 370 __uint8_t m_agno_log; /* log #ag's */ 371 __uint8_t m_agino_log; /* #bits for agino in inum */ 372 __uint16_t m_inode_cluster_size;/* min inode buf size */ 373 uint m_blockmask; /* sb_blocksize-1 */ 374 uint m_blockwsize; /* sb_blocksize in words */ 375 uint m_blockwmask; /* blockwsize-1 */ 376 uint m_alloc_mxr[2]; /* XFS_ALLOC_BLOCK_MAXRECS */ 377 uint m_alloc_mnr[2]; /* XFS_ALLOC_BLOCK_MINRECS */ 378 uint m_bmap_dmxr[2]; /* XFS_BMAP_BLOCK_DMAXRECS */ 379 uint m_bmap_dmnr[2]; /* XFS_BMAP_BLOCK_DMINRECS */ 380 uint m_inobt_mxr[2]; /* XFS_INOBT_BLOCK_MAXRECS */ 381 uint m_inobt_mnr[2]; /* XFS_INOBT_BLOCK_MINRECS */ 382 uint m_ag_maxlevels; /* XFS_AG_MAXLEVELS */ 383 uint m_bm_maxlevels[2]; /* XFS_BM_MAXLEVELS */ 384 uint m_in_maxlevels; /* XFS_IN_MAXLEVELS */ 385 struct xfs_perag *m_perag; /* per-ag accounting info */ 386 struct rw_semaphore m_peraglock; /* lock for m_perag (pointer) */ 387 struct mutex m_growlock; /* growfs mutex */ 388 int m_fixedfsid[2]; /* unchanged for life of FS */ 389 uint m_dmevmask; /* DMI events for this FS */ 390 __uint64_t m_flags; /* global mount flags */ 391 uint m_attroffset; /* inode attribute offset */ 392 uint m_dir_node_ents; /* #entries in a dir danode */ 393 uint m_attr_node_ents; /* #entries in attr danode */ 394 int m_ialloc_inos; /* inodes in inode allocation */ 395 int m_ialloc_blks; /* blocks in inode allocation */ 396 int m_litino; /* size of inode union area */ 397 int m_inoalign_mask;/* mask sb_inoalignmt if used */ 398 uint m_qflags; /* quota status flags */ 399 xfs_trans_reservations_t m_reservations;/* precomputed res values */ 400 __uint64_t m_maxicount; /* maximum inode count */ 401 __uint64_t m_maxioffset; /* maximum inode offset */ 402 __uint64_t m_resblks; /* total reserved blocks */ 403 __uint64_t m_resblks_avail;/* available reserved blocks */ 404 #if XFS_BIG_INUMS 405 xfs_ino_t m_inoadd; /* add value for ino64_offset */ 406 #endif 407 int m_dalign; /* stripe unit */ 408 int m_swidth; /* stripe width */ 409 int m_sinoalign; /* stripe unit inode alignment */ 410 int m_attr_magicpct;/* 37% of the blocksize */ 411 int m_dir_magicpct; /* 37% of the dir blocksize */ 412 __uint8_t m_mk_sharedro; /* mark shared ro on unmount */ 413 __uint8_t m_inode_quiesce;/* call quiesce on new inodes. 414 field governed by m_ilock */ 415 __uint8_t m_sectbb_log; /* sectlog - BBSHIFT */ 416 int m_dirblksize; /* directory block sz--bytes */ 417 int m_dirblkfsbs; /* directory block sz--fsbs */ 418 xfs_dablk_t m_dirdatablk; /* blockno of dir data v2 */ 419 xfs_dablk_t m_dirleafblk; /* blockno of dir non-data v2 */ 420 xfs_dablk_t m_dirfreeblk; /* blockno of dirfreeindex v2 */ 421 uint m_chsize; /* size of next field */ 422 struct xfs_chash *m_chash; /* fs private inode per-cluster 423 * hash table */ 424 struct xfs_dmops *m_dm_ops; /* vector of DMI ops */ 425 struct xfs_qmops *m_qm_ops; /* vector of XQM ops */ 426 struct xfs_ioops m_io_ops; /* vector of I/O ops */ 427 atomic_t m_active_trans; /* number trans frozen */ 428 #ifdef HAVE_PERCPU_SB 429 xfs_icsb_cnts_t *m_sb_cnts; /* per-cpu superblock counters */ 430 unsigned long m_icsb_counters; /* disabled per-cpu counters */ 431 struct notifier_block m_icsb_notifier; /* hotplug cpu notifier */ 432 struct mutex m_icsb_mutex; /* balancer sync lock */ 433 #endif 434 struct xfs_mru_cache *m_filestream; /* per-mount filestream data */ 435 struct task_struct *m_sync_task; /* generalised sync thread */ 436 bhv_vfs_sync_work_t m_sync_work; /* work item for VFS_SYNC */ 437 struct list_head m_sync_list; /* sync thread work item list */ 438 spinlock_t m_sync_lock; /* work item list lock */ 439 int m_sync_seq; /* sync thread generation no. */ 440 wait_queue_head_t m_wait_single_sync_task; 441 } xfs_mount_t; 442 443 /* 444 * Flags for m_flags. 445 */ 446 #define XFS_MOUNT_WSYNC (1ULL << 0) /* for nfs - all metadata ops 447 must be synchronous except 448 for space allocations */ 449 #define XFS_MOUNT_INO64 (1ULL << 1) 450 #define XFS_MOUNT_DMAPI (1ULL << 2) /* dmapi is enabled */ 451 #define XFS_MOUNT_WAS_CLEAN (1ULL << 3) 452 #define XFS_MOUNT_FS_SHUTDOWN (1ULL << 4) /* atomic stop of all filesystem 453 operations, typically for 454 disk errors in metadata */ 455 #define XFS_MOUNT_RETERR (1ULL << 6) /* return alignment errors to 456 user */ 457 #define XFS_MOUNT_NOALIGN (1ULL << 7) /* turn off stripe alignment 458 allocations */ 459 #define XFS_MOUNT_ATTR2 (1ULL << 8) /* allow use of attr2 format */ 460 #define XFS_MOUNT_GRPID (1ULL << 9) /* group-ID assigned from directory */ 461 #define XFS_MOUNT_NORECOVERY (1ULL << 10) /* no recovery - dirty fs */ 462 #define XFS_MOUNT_SHARED (1ULL << 11) /* shared mount */ 463 #define XFS_MOUNT_DFLT_IOSIZE (1ULL << 12) /* set default i/o size */ 464 #define XFS_MOUNT_OSYNCISOSYNC (1ULL << 13) /* o_sync is REALLY o_sync */ 465 /* osyncisdsync is now default*/ 466 #define XFS_MOUNT_32BITINODES (1ULL << 14) /* do not create inodes above 467 * 32 bits in size */ 468 #define XFS_MOUNT_SMALL_INUMS (1ULL << 15) /* users wants 32bit inodes */ 469 #define XFS_MOUNT_NOUUID (1ULL << 16) /* ignore uuid during mount */ 470 #define XFS_MOUNT_BARRIER (1ULL << 17) 471 #define XFS_MOUNT_IDELETE (1ULL << 18) /* delete empty inode clusters*/ 472 #define XFS_MOUNT_SWALLOC (1ULL << 19) /* turn on stripe width 473 * allocation */ 474 #define XFS_MOUNT_RDONLY (1ULL << 20) /* read-only fs */ 475 #define XFS_MOUNT_DIRSYNC (1ULL << 21) /* synchronous directory ops */ 476 #define XFS_MOUNT_COMPAT_IOSIZE (1ULL << 22) /* don't report large preferred 477 * I/O size in stat() */ 478 #define XFS_MOUNT_NO_PERCPU_SB (1ULL << 23) /* don't use per-cpu superblock 479 counters */ 480 #define XFS_MOUNT_FILESTREAMS (1ULL << 24) /* enable the filestreams 481 allocator */ 482 483 484 /* 485 * Default minimum read and write sizes. 486 */ 487 #define XFS_READIO_LOG_LARGE 16 488 #define XFS_WRITEIO_LOG_LARGE 16 489 490 /* 491 * Max and min values for mount-option defined I/O 492 * preallocation sizes. 493 */ 494 #define XFS_MAX_IO_LOG 30 /* 1G */ 495 #define XFS_MIN_IO_LOG PAGE_SHIFT 496 497 /* 498 * Synchronous read and write sizes. This should be 499 * better for NFSv2 wsync filesystems. 500 */ 501 #define XFS_WSYNC_READIO_LOG 15 /* 32K */ 502 #define XFS_WSYNC_WRITEIO_LOG 14 /* 16K */ 503 504 /* 505 * Allow large block sizes to be reported to userspace programs if the 506 * "largeio" mount option is used. 507 * 508 * If compatibility mode is specified, simply return the basic unit of caching 509 * so that we don't get inefficient read/modify/write I/O from user apps. 510 * Otherwise.... 511 * 512 * If the underlying volume is a stripe, then return the stripe width in bytes 513 * as the recommended I/O size. It is not a stripe and we've set a default 514 * buffered I/O size, return that, otherwise return the compat default. 515 */ 516 static inline unsigned long 517 xfs_preferred_iosize(xfs_mount_t *mp) 518 { 519 if (mp->m_flags & XFS_MOUNT_COMPAT_IOSIZE) 520 return PAGE_CACHE_SIZE; 521 return (mp->m_swidth ? 522 (mp->m_swidth << mp->m_sb.sb_blocklog) : 523 ((mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) ? 524 (1 << (int)MAX(mp->m_readio_log, mp->m_writeio_log)) : 525 PAGE_CACHE_SIZE)); 526 } 527 528 #define XFS_MAXIOFFSET(mp) ((mp)->m_maxioffset) 529 530 #define XFS_LAST_UNMOUNT_WAS_CLEAN(mp) \ 531 ((mp)->m_flags & XFS_MOUNT_WAS_CLEAN) 532 #define XFS_FORCED_SHUTDOWN(mp) ((mp)->m_flags & XFS_MOUNT_FS_SHUTDOWN) 533 void xfs_do_force_shutdown(struct xfs_mount *mp, int flags, char *fname, 534 int lnnum); 535 #define xfs_force_shutdown(m,f) \ 536 xfs_do_force_shutdown(m, f, __FILE__, __LINE__) 537 538 /* 539 * Flags for xfs_mountfs 540 */ 541 #define XFS_MFSI_SECOND 0x01 /* Secondary mount -- skip stuff */ 542 #define XFS_MFSI_CLIENT 0x02 /* Is a client -- skip lots of stuff */ 543 /* XFS_MFSI_RRINODES */ 544 #define XFS_MFSI_NOUNLINK 0x08 /* Skip unlinked inode processing in */ 545 /* log recovery */ 546 #define XFS_MFSI_NO_QUOTACHECK 0x10 /* Skip quotacheck processing */ 547 /* XFS_MFSI_CONVERT_SUNIT */ 548 #define XFS_MFSI_QUIET 0x40 /* Be silent if mount errors found */ 549 550 #define XFS_DADDR_TO_AGNO(mp,d) xfs_daddr_to_agno(mp,d) 551 static inline xfs_agnumber_t 552 xfs_daddr_to_agno(struct xfs_mount *mp, xfs_daddr_t d) 553 { 554 xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d); 555 do_div(ld, mp->m_sb.sb_agblocks); 556 return (xfs_agnumber_t) ld; 557 } 558 559 #define XFS_DADDR_TO_AGBNO(mp,d) xfs_daddr_to_agbno(mp,d) 560 static inline xfs_agblock_t 561 xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d) 562 { 563 xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d); 564 return (xfs_agblock_t) do_div(ld, mp->m_sb.sb_agblocks); 565 } 566 567 /* 568 * perag get/put wrappers for eventual ref counting 569 */ 570 static inline xfs_perag_t * 571 xfs_get_perag(struct xfs_mount *mp, xfs_ino_t ino) 572 { 573 return &mp->m_perag[XFS_INO_TO_AGNO(mp, ino)]; 574 } 575 576 static inline void 577 xfs_put_perag(struct xfs_mount *mp, xfs_perag_t *pag) 578 { 579 /* nothing to see here, move along */ 580 } 581 582 /* 583 * Per-cpu superblock locking functions 584 */ 585 #ifdef HAVE_PERCPU_SB 586 STATIC_INLINE void 587 xfs_icsb_lock(xfs_mount_t *mp) 588 { 589 mutex_lock(&mp->m_icsb_mutex); 590 } 591 592 STATIC_INLINE void 593 xfs_icsb_unlock(xfs_mount_t *mp) 594 { 595 mutex_unlock(&mp->m_icsb_mutex); 596 } 597 #else 598 #define xfs_icsb_lock(mp) 599 #define xfs_icsb_unlock(mp) 600 #endif 601 602 /* 603 * This structure is for use by the xfs_mod_incore_sb_batch() routine. 604 * xfs_growfs can specify a few fields which are more than int limit 605 */ 606 typedef struct xfs_mod_sb { 607 xfs_sb_field_t msb_field; /* Field to modify, see below */ 608 int64_t msb_delta; /* Change to make to specified field */ 609 } xfs_mod_sb_t; 610 611 #define XFS_MOUNT_ILOCK(mp) mutex_lock(&((mp)->m_ilock)) 612 #define XFS_MOUNT_IUNLOCK(mp) mutex_unlock(&((mp)->m_ilock)) 613 #define XFS_SB_LOCK(mp) mutex_spinlock(&(mp)->m_sb_lock) 614 #define XFS_SB_UNLOCK(mp,s) mutex_spinunlock(&(mp)->m_sb_lock,(s)) 615 616 extern xfs_mount_t *xfs_mount_init(void); 617 extern void xfs_mod_sb(xfs_trans_t *, __int64_t); 618 extern int xfs_log_sbcount(xfs_mount_t *, uint); 619 extern void xfs_mount_free(xfs_mount_t *mp); 620 extern int xfs_mountfs(xfs_mount_t *mp, int); 621 extern void xfs_mountfs_check_barriers(xfs_mount_t *mp); 622 623 extern int xfs_unmountfs(xfs_mount_t *, struct cred *); 624 extern void xfs_unmountfs_close(xfs_mount_t *, struct cred *); 625 extern int xfs_unmountfs_writesb(xfs_mount_t *); 626 extern int xfs_unmount_flush(xfs_mount_t *, int); 627 extern int xfs_mod_incore_sb(xfs_mount_t *, xfs_sb_field_t, int64_t, int); 628 extern int xfs_mod_incore_sb_unlocked(xfs_mount_t *, xfs_sb_field_t, 629 int64_t, int); 630 extern int xfs_mod_incore_sb_batch(xfs_mount_t *, xfs_mod_sb_t *, 631 uint, int); 632 extern struct xfs_buf *xfs_getsb(xfs_mount_t *, int); 633 extern int xfs_readsb(xfs_mount_t *, int); 634 extern void xfs_freesb(xfs_mount_t *); 635 extern int xfs_fs_writable(xfs_mount_t *); 636 extern int xfs_syncsub(xfs_mount_t *, int, int *); 637 extern int xfs_sync_inodes(xfs_mount_t *, int, int *); 638 extern xfs_agnumber_t xfs_initialize_perag(xfs_mount_t *, xfs_agnumber_t); 639 extern void xfs_sb_from_disk(struct xfs_sb *, struct xfs_dsb *); 640 extern void xfs_sb_to_disk(struct xfs_dsb *, struct xfs_sb *, __int64_t); 641 extern int xfs_sb_validate_fsb_count(struct xfs_sb *, __uint64_t); 642 643 extern int xfs_dmops_get(struct xfs_mount *, struct xfs_mount_args *); 644 extern void xfs_dmops_put(struct xfs_mount *); 645 extern int xfs_qmops_get(struct xfs_mount *, struct xfs_mount_args *); 646 extern void xfs_qmops_put(struct xfs_mount *); 647 648 extern struct xfs_dmops xfs_dmcore_xfs; 649 extern struct xfs_ioops xfs_iocore_xfs; 650 651 extern int xfs_init(void); 652 extern void xfs_cleanup(void); 653 654 #endif /* __KERNEL__ */ 655 656 #endif /* __XFS_MOUNT_H__ */ 657