include/xfs_inode.h

   1 /*
   2  * Copyright (c) 2000-2002 Silicon Graphics, Inc.  All Rights Reserved.
   3  *
   4  * This program is free software; you can redistribute it and/or modify it
   5  * under the terms of version 2 of the GNU General Public License as
   6  * published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it would be useful, but
   9  * WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  11  *
  12  * Further, this software is distributed without any warranty that it is
  13  * free of the rightful claim of any third person regarding infringement
  14  * or the like.  Any license provided herein, whether implied or
  15  * otherwise, applies only to this software file.  Patent licenses, if
  16  * any, provided herein do not apply to combinations of this program with
  17  * other software, or any other product whatsoever.
  18  *
  19  * You should have received a copy of the GNU General Public License along
  20  * with this program; if not, write the Free Software Foundation, Inc., 59
  21  * Temple Place - Suite 330, Boston MA 02111-1307, USA.
  22  *
  23  * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
  24  * Mountain View, CA  94043, or:
  25  *
  26  * http://www.sgi.com
  27  *
  28  * For further information regarding this notice, see:
  29  *
  30  * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
  31  */
  32 #ifndef __XFS_INODE_H__
  33 #define __XFS_INODE_H__
  34
  35 /*
  36  * File incore extent information, present for each of data & attr forks.
  37  */
  38 #define XFS_INLINE_EXTS 2
  39 #define XFS_INLINE_DATA 32
  40 typedef struct xfs_ifork {
  41         int                     if_bytes;       /* bytes in if_u1 */
  42         int                     if_real_bytes;  /* bytes allocated in if_u1 */
  43         xfs_bmbt_block_t        *if_broot;      /* file's incore btree root */
  44         short                   if_broot_bytes; /* bytes allocated for root */
  45         unsigned char           if_flags;       /* per-fork flags */
  46         unsigned char           if_ext_max;     /* max # of extent records */
  47         xfs_extnum_t            if_lastex;      /* last if_extents used */
  48         union {
  49                 xfs_bmbt_rec_t  *if_extents;    /* linear map file exts */
  50                 char            *if_data;       /* inline file data */
  51         } if_u1;
  52         union {
  53                 xfs_bmbt_rec_t  if_inline_ext[XFS_INLINE_EXTS];
  54                                                 /* very small file extents */
  55                 char            if_inline_data[XFS_INLINE_DATA];
  56                                                 /* very small file data */
  57                 xfs_dev_t       if_rdev;        /* dev number if special */
  58                 uuid_t          if_uuid;        /* mount point value */
  59         } if_u2;
  60 } xfs_ifork_t;
  61
  62 /*
  63  * Flags for xfs_ichgtime().
  64  */
  65 #define XFS_ICHGTIME_MOD        0x1     /* data fork modification timestamp */
  66 #define XFS_ICHGTIME_ACC        0x2     /* data fork access timestamp */
  67 #define XFS_ICHGTIME_CHG        0x4     /* inode field change timestamp */
  68
  69 /*
  70  * Per-fork incore inode flags.
  71  */
  72 #define XFS_IFINLINE    0x0001  /* Inline data is read in */
  73 #define XFS_IFEXTENTS   0x0002  /* All extent pointers are read in */
  74 #define XFS_IFBROOT     0x0004  /* i_broot points to the bmap b-tree root */
  75
  76 /*
  77  * Flags for xfs_imap() and xfs_dilocate().
  78  */
  79 #define XFS_IMAP_LOOKUP         0x1
  80
  81 /*
  82  * Maximum number of extent pointers in if_u1.if_extents.
  83  */
  84 #define XFS_MAX_INCORE_EXTENTS  32768
  85
  86
  87 #ifdef __KERNEL__
  88 struct bhv_desc;
  89 struct cred;
  90 struct ktrace;
  91 struct vnode;
  92 struct xfs_buf;
  93 struct xfs_bmap_free;
  94 struct xfs_bmbt_irec;
  95 struct xfs_bmbt_block;
  96 struct xfs_inode;
  97 struct xfs_inode_log_item;
  98 struct xfs_mount;
  99 struct xfs_trans;
 100 struct xfs_dquot;
 101 struct pm;
 102
 103
 104 /*
 105  * This structure is used to communicate which extents of a file
 106  * were holes when a write started from xfs_write_file() to
 107  * xfs_strat_read().  This is necessary so that we can know which
 108  * blocks need to be zeroed when they are read in in xfs_strat_read()
 109  * if they weren\'t allocated when the buffer given to xfs_strat_read()
 110  * was mapped.
 111  *
 112  * We keep a list of these attached to the inode.  The list is
 113  * protected by the inode lock and the fact that the io lock is
 114  * held exclusively by writers.
 115  */
 116 typedef struct xfs_gap {
 117         struct xfs_gap  *xg_next;
 118         xfs_fileoff_t   xg_offset_fsb;
 119         xfs_extlen_t    xg_count_fsb;
 120 } xfs_gap_t;
 121
 122 /*
 123  * This structure is used to hold common pieces of the buffer
 124  * and file for xfs_dio_write and xfs_dio_read.
 125  */
 126 typedef struct xfs_dio {
 127         struct xfs_buf  *xd_bp;
 128         bhv_desc_t      *xd_bdp;
 129         struct xfs_inode *xd_ip;
 130         struct xfs_iocore *xd_io;
 131         struct cred     *xd_cr;
 132         struct pm       *xd_pmp;
 133         int             xd_blkalgn;
 134         int             xd_ioflag;
 135         xfs_off_t       xd_start;
 136         size_t          xd_length;
 137 } xfs_dio_t;
 138
 139 typedef struct dm_attrs_s {
 140         __uint32_t      da_dmevmask;    /* DMIG event mask */
 141         __uint16_t      da_dmstate;     /* DMIG state info */
 142         __uint16_t      da_pad;         /* DMIG extra padding */
 143 } dm_attrs_t;
 144
 145 typedef struct xfs_iocore {
 146         void                    *io_obj;        /* pointer to container
 147                                                  * inode or dcxvn structure */
 148         struct xfs_mount        *io_mount;      /* fs mount struct ptr */
 149 #ifdef DEBUG
 150         mrlock_t                *io_lock;       /* inode IO lock */
 151         mrlock_t                *io_iolock;     /* inode IO lock */
 152 #endif
 153
 154         /* I/O state */
 155         xfs_fsize_t             io_new_size;    /* sz when write completes */
 156
 157         /* Miscellaneous state. */
 158         unsigned int            io_flags;       /* IO related flags */
 159
 160         /* DMAPI state */
 161         dm_attrs_t              io_dmattrs;
 162
 163 } xfs_iocore_t;
 164
 165 #define        io_dmevmask     io_dmattrs.da_dmevmask
 166 #define        io_dmstate      io_dmattrs.da_dmstate
 167
 168 #define XFS_IO_INODE(io)        ((xfs_inode_t *) ((io)->io_obj))
 169 #define XFS_IO_DCXVN(io)        ((dcxvn_t *) ((io)->io_obj))
 170
 171 /*
 172  * Flags in the flags field
 173  */
 174
 175 #define XFS_IOCORE_ISXFS        0x01
 176 #define XFS_IOCORE_ISCXFS       0x02
 177 #define XFS_IOCORE_RT           0x04
 178
 179 #define IO_IS_XFS(io)   ((io)->io_flags & XFS_IOCORE_ISXFS)
 180
 181 /*
 182  * xfs_iocore prototypes
 183  */
 184
 185 extern void xfs_iocore_inode_init(struct xfs_inode *);
 186 extern void xfs_iocore_inode_reinit(struct xfs_inode *);
 187
 188
 189 /*
 190  * This is the type used in the xfs inode hash table.
 191  * An array of these is allocated for each mounted
 192  * file system to hash the inodes for that file system.
 193  */
 194 typedef struct xfs_ihash {
 195         struct xfs_inode        *ih_next;
 196         rwlock_t                ih_lock;
 197         uint                    ih_version;
 198 } xfs_ihash_t;
 199
 200 /*
 201  * Inode hashing and hash bucket locking.
 202  */
 203 #define XFS_BUCKETS(mp) (37*(mp)->m_sb.sb_agcount-1)
 204 #define XFS_IHASH(mp,ino) ((mp)->m_ihash + (((uint)ino) % (mp)->m_ihsize))
 205
 206 /*
 207  * This is the xfs inode cluster hash.  This hash is used by xfs_iflush to
 208  * find inodes that share a cluster and can be flushed to disk at the same
 209  * time.
 210  */
 211
 212 typedef struct xfs_chashlist {
 213         struct xfs_chashlist    *chl_next;
 214         struct xfs_inode        *chl_ip;
 215         xfs_daddr_t             chl_blkno;      /* starting block number of
 216                                                  * the cluster */
 217 #ifdef DEBUG
 218         struct xfs_buf          *chl_buf;       /* debug: the inode buffer */
 219 #endif
 220 } xfs_chashlist_t;
 221
 222 typedef struct xfs_chash {
 223         xfs_chashlist_t         *ch_list;
 224         lock_t                  ch_lock;
 225 } xfs_chash_t;
 226
 227
 228 /*
 229  * This is the xfs in-core inode structure.
 230  * Most of the on-disk inode is embedded in the i_d field.
 231  *
 232  * The extent pointers/inline file space, however, are managed
 233  * separately.  The memory for this information is pointed to by
 234  * the if_u1 unions depending on the type of the data.
 235  * This is used to linearize the array of extents for fast in-core
 236  * access.  This is used until the file's number of extents
 237  * surpasses XFS_MAX_INCORE_EXTENTS, at which point all extent pointers
 238  * are accessed through the buffer cache.
 239  *
 240  * Other state kept in the in-core inode is used for identification,
 241  * locking, transactional updating, etc of the inode.
 242  *
 243  * Generally, we do not want to hold the i_rlock while holding the
 244  * i_ilock. Hierarchy is i_iolock followed by i_rlock.
 245  *
 246  * xfs_iptr_t contains all the inode fields upto and including the
 247  * i_mnext and i_mprev fields, it is used as a marker in the inode
 248  * chain off the mount structure by xfs_sync calls.
 249  */
 250
 251 typedef struct {
 252         struct xfs_ihash        *ip_hash;       /* pointer to hash header */
 253         struct xfs_inode        *ip_next;       /* inode hash link forw */
 254         struct xfs_inode        *ip_mnext;      /* next inode in mount list */
 255         struct xfs_inode        *ip_mprev;      /* ptr to prev inode */
 256         struct xfs_inode        **ip_prevp;     /* ptr to prev i_next */
 257         struct xfs_mount        *ip_mount;      /* fs mount struct ptr */
 258 } xfs_iptr_t;
 259
 260 typedef struct xfs_inode {
 261         /* Inode linking and identification information. */
 262         struct xfs_ihash        *i_hash;        /* pointer to hash header */
 263         struct xfs_inode        *i_next;        /* inode hash link forw */
 264         struct xfs_inode        *i_mnext;       /* next inode in mount list */
 265         struct xfs_inode        *i_mprev;       /* ptr to prev inode */
 266         struct xfs_inode        **i_prevp;      /* ptr to prev i_next */
 267         struct xfs_mount        *i_mount;       /* fs mount struct ptr */
 268         struct bhv_desc         i_bhv_desc;     /* inode behavior descriptor*/
 269         struct xfs_dquot        *i_udquot;      /* user dquot */
 270         struct xfs_dquot        *i_gdquot;      /* group dquot */
 271
 272         /* Inode location stuff */
 273         xfs_ino_t               i_ino;          /* inode number (agno/agino)*/
 274         xfs_daddr_t             i_blkno;        /* blkno of inode buffer */
 275         ushort                  i_len;          /* len of inode buffer */
 276         ushort                  i_boffset;      /* off of inode in buffer */
 277
 278         /* Extent information. */
 279         xfs_ifork_t             *i_afp;         /* attribute fork pointer */
 280         xfs_ifork_t             i_df;           /* data fork */
 281
 282         /* Transaction and locking information. */
 283         struct xfs_trans        *i_transp;      /* ptr to owning transaction*/
 284         struct xfs_inode_log_item *i_itemp;     /* logging information */
 285         mrlock_t                i_lock;         /* inode lock */
 286         mrlock_t                i_iolock;       /* inode IO lock */
 287         sema_t                  i_flock;        /* inode flush lock */
 288         atomic_t                i_pincount;     /* inode pin count */
 289         wait_queue_head_t       i_ipin_wait;    /* inode pinning wait queue */
 290         struct xfs_inode        **i_refcache;   /* ptr to entry in ref cache */
 291         struct xfs_inode        *i_release;     /* inode to unref */
 292
 293         /* I/O state */
 294         xfs_iocore_t            i_iocore;       /* I/O core */
 295
 296         /* Miscellaneous state. */
 297         unsigned short          i_flags;        /* see defined flags below */
 298         unsigned char           i_update_core;  /* timestamps/size is dirty */
 299         unsigned char           i_update_size;  /* di_size field is dirty */
 300         unsigned int            i_gen;          /* generation count */
 301         unsigned int            i_delayed_blks; /* count of delay alloc blks */
 302
 303         xfs_dinode_core_t       i_d;            /* most of ondisk inode */
 304         xfs_chashlist_t         *i_chash;       /* cluster hash list header */
 305         struct xfs_inode        *i_cnext;       /* cluster hash link forward */
 306         struct xfs_inode        *i_cprev;       /* cluster hash link backward */
 307
 308 #ifdef DEBUG
 309         /* Trace buffers per inode. */
 310         struct ktrace           *i_xtrace;      /* inode extent list trace */
 311         struct ktrace           *i_btrace;      /* inode bmap btree trace */
 312         struct ktrace           *i_rwtrace;     /* inode read/write trace */
 313         struct ktrace           *i_strat_trace; /* inode strat_write trace */
 314         struct ktrace           *i_lock_trace;  /* inode lock/unlock trace */
 315         struct ktrace           *i_dir_trace;   /* inode directory trace */
 316 #endif /* DEBUG */
 317 } xfs_inode_t;
 318
 319 #endif  /* __KERNEL__ */
 320
 321
 322 /*
 323  * Fork handling.
 324  */
 325 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_IFORK_PTR)
 326 xfs_ifork_t *xfs_ifork_ptr(xfs_inode_t *ip, int w);
 327 #define XFS_IFORK_PTR(ip,w)             xfs_ifork_ptr(ip,w)
 328 #else
 329 #define XFS_IFORK_PTR(ip,w)   ((w) == XFS_DATA_FORK ? &(ip)->i_df : (ip)->i_afp)
 330 #endif
 331 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_IFORK_Q)
 332 int xfs_ifork_q(xfs_inode_t *ip);
 333 #define XFS_IFORK_Q(ip)                 xfs_ifork_q(ip)
 334 #else
 335 #define XFS_IFORK_Q(ip)                 XFS_CFORK_Q(&(ip)->i_d)
 336 #endif
 337 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_IFORK_DSIZE)
 338 int xfs_ifork_dsize(xfs_inode_t *ip);
 339 #define XFS_IFORK_DSIZE(ip)             xfs_ifork_dsize(ip)
 340 #else
 341 #define XFS_IFORK_DSIZE(ip)             XFS_CFORK_DSIZE(&ip->i_d, ip->i_mount)
 342 #endif
 343 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_IFORK_ASIZE)
 344 int xfs_ifork_asize(xfs_inode_t *ip);
 345 #define XFS_IFORK_ASIZE(ip)             xfs_ifork_asize(ip)
 346 #else
 347 #define XFS_IFORK_ASIZE(ip)             XFS_CFORK_ASIZE(&ip->i_d, ip->i_mount)
 348 #endif
 349 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_IFORK_SIZE)
 350 int xfs_ifork_size(xfs_inode_t *ip, int w);
 351 #define XFS_IFORK_SIZE(ip,w)            xfs_ifork_size(ip,w)
 352 #else
 353 #define XFS_IFORK_SIZE(ip,w)            XFS_CFORK_SIZE(&ip->i_d, ip->i_mount, w)
 354 #endif
 355 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_IFORK_FORMAT)
 356 int xfs_ifork_format(xfs_inode_t *ip, int w);
 357 #define XFS_IFORK_FORMAT(ip,w)          xfs_ifork_format(ip,w)
 358 #else
 359 #define XFS_IFORK_FORMAT(ip,w)          XFS_CFORK_FORMAT(&ip->i_d, w)
 360 #endif
 361 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_IFORK_FMT_SET)
 362 void xfs_ifork_fmt_set(xfs_inode_t *ip, int w, int n);
 363 #define XFS_IFORK_FMT_SET(ip,w,n)       xfs_ifork_fmt_set(ip,w,n)
 364 #else
 365 #define XFS_IFORK_FMT_SET(ip,w,n)       XFS_CFORK_FMT_SET(&ip->i_d, w, n)
 366 #endif
 367 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_IFORK_NEXTENTS)
 368 int xfs_ifork_nextents(xfs_inode_t *ip, int w);
 369 #define XFS_IFORK_NEXTENTS(ip,w)        xfs_ifork_nextents(ip,w)
 370 #else
 371 #define XFS_IFORK_NEXTENTS(ip,w)        XFS_CFORK_NEXTENTS(&ip->i_d, w)
 372 #endif
 373 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_IFORK_NEXT_SET)
 374 void xfs_ifork_next_set(xfs_inode_t *ip, int w, int n);
 375 #define XFS_IFORK_NEXT_SET(ip,w,n)      xfs_ifork_next_set(ip,w,n)
 376 #else
 377 #define XFS_IFORK_NEXT_SET(ip,w,n)      XFS_CFORK_NEXT_SET(&ip->i_d, w, n)
 378 #endif
 379
 380
 381 #ifdef __KERNEL__
 382
 383 /*
 384  * In-core inode flags.
 385  */
 386 #define XFS_IGRIO       0x0001  /* inode used for guaranteed rate i/o */
 387 #define XFS_IUIOSZ      0x0002  /* inode i/o sizes have been explicitly set */
 388 #define XFS_IQUIESCE    0x0004  /* we have started quiescing for this inode */
 389 #define XFS_IRECLAIM    0x0008  /* we have started reclaiming this inode    */
 390
 391 /*
 392  * Flags for inode locking.
 393  */
 394 #define XFS_IOLOCK_EXCL         0x001
 395 #define XFS_IOLOCK_SHARED       0x002
 396 #define XFS_ILOCK_EXCL          0x004
 397 #define XFS_ILOCK_SHARED        0x008
 398 #define XFS_IUNLOCK_NONOTIFY    0x010
 399 #define XFS_EXTENT_TOKEN_RD     0x040
 400 #define XFS_SIZE_TOKEN_RD       0x080
 401 #define XFS_EXTSIZE_RD          (XFS_EXTENT_TOKEN_RD|XFS_SIZE_TOKEN_RD)
 402 #define XFS_WILLLEND            0x100   /* Always acquire tokens for lending */
 403 #define XFS_EXTENT_TOKEN_WR     (XFS_EXTENT_TOKEN_RD | XFS_WILLLEND)
 404 #define XFS_SIZE_TOKEN_WR       (XFS_SIZE_TOKEN_RD | XFS_WILLLEND)
 405 #define XFS_EXTSIZE_WR          (XFS_EXTSIZE_RD | XFS_WILLLEND)
 406
 407
 408 #define XFS_LOCK_MASK   \
 409         (XFS_IOLOCK_EXCL | XFS_IOLOCK_SHARED | XFS_ILOCK_EXCL | \
 410          XFS_ILOCK_SHARED | XFS_EXTENT_TOKEN_RD | XFS_SIZE_TOKEN_RD | \
 411          XFS_WILLLEND)
 412
 413 /*
 414  * Flags for xfs_iflush()
 415  */
 416 #define XFS_IFLUSH_DELWRI_ELSE_SYNC     1
 417 #define XFS_IFLUSH_DELWRI_ELSE_ASYNC    2
 418 #define XFS_IFLUSH_SYNC                 3
 419 #define XFS_IFLUSH_ASYNC                4
 420 #define XFS_IFLUSH_DELWRI               5
 421
 422 /*
 423  * Flags for xfs_iflush_all.
 424  */
 425 #define XFS_FLUSH_ALL           0x1
 426
 427 /*
 428  * Flags for xfs_itruncate_start().
 429  */
 430 #define XFS_ITRUNC_DEFINITE     0x1
 431 #define XFS_ITRUNC_MAYBE        0x2
 432
 433 /*
 434  * if XFS_BIG_FILES, 2^(31+PAGE_SHIFT) - 1 (due to linux page cache),
 435  * else 2^40 - 1 (40=31+9) (might be an int holding a block #)
 436  *
 437  * NOTE: XFS itself can handle 2^63 - 1 (largest positive value of xfs_fsize_t)
 438  * but Linux can't go above 2^(31+PAGE_SHIFT)-1: the Linux VM uses a 32 bit
 439  * signed variable to index cache data, so 2^31 * PAGE_SIZE is as big as
 440  * you can go.
 441  */
 442 #define XFS_MAX_FILE_OFFSET     ((long long)((1ULL<<(31+PAGE_SHIFT))-1ULL))
 443
 444 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_ITOV)
 445 struct vnode *xfs_itov(xfs_inode_t *ip);
 446 #define XFS_ITOV(ip)            xfs_itov(ip)
 447 #else
 448 #define XFS_ITOV(ip)            BHV_TO_VNODE(XFS_ITOBHV(ip))
 449 #endif
 450 #define XFS_ITOV_NULL(ip)       BHV_TO_VNODE_NULL(XFS_ITOBHV(ip))
 451 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_ITOBHV)
 452 struct bhv_desc *xfs_itobhv(xfs_inode_t *ip);
 453 #define XFS_ITOBHV(ip)          xfs_itobhv(ip)
 454 #else
 455 #define XFS_ITOBHV(ip)          ((struct bhv_desc *)(&((ip)->i_bhv_desc)))
 456 #endif
 457 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BHVTOI)
 458 xfs_inode_t *xfs_bhvtoi(struct bhv_desc *bhvp);
 459 #define XFS_BHVTOI(bhvp)        xfs_bhvtoi(bhvp)
 460 #else
 461 #define XFS_BHVTOI(bhvp)        \
 462         ((xfs_inode_t *)((char *)(bhvp) - \
 463                          (char *)&(((xfs_inode_t *)0)->i_bhv_desc)))
 464 #endif
 465
 466 #define BHV_IS_XFS(bdp)         (BHV_OPS(bdp) == &xfs_vnodeops)
 467
 468 /*
 469  * Pick the inode cluster hash bucket
 470  * (m_chash is the same size as m_ihash)
 471  */
 472 #define XFS_CHASH(mp,blk) ((mp)->m_chash + (((uint)blk) % (mp)->m_chsize))
 473
 474 /*
 475  * For multiple groups support: if ISGID bit is set in the parent
 476  * directory, group of new file is set to that of the parent, and
 477  * new subdirectory gets ISGID bit from parent.
 478  */
 479 #define XFS_INHERIT_GID(pip, vfsp)      ((pip) != NULL && \
 480         (((vfsp)->vfs_flag & VFS_GRPID) || ((pip)->i_d.di_mode & ISGID)))
 481
 482 /*
 483  * xfs_iget.c prototypes.
 484  */
 485 void            xfs_ihash_init(struct xfs_mount *);
 486 void            xfs_ihash_free(struct xfs_mount *);
 487 void            xfs_chash_init(struct xfs_mount *);
 488 void            xfs_chash_free(struct xfs_mount *);
 489 xfs_inode_t     *xfs_inode_incore(struct xfs_mount *, xfs_ino_t,
 490                                   struct xfs_trans *);
 491 void            xfs_inode_lock_init(xfs_inode_t *, struct vnode *);
 492 int             xfs_iget(struct xfs_mount *, struct xfs_trans *, xfs_ino_t,
 493                          uint, xfs_inode_t **, xfs_daddr_t);
 494 int             xfs_vn_iget(vfs_t *, struct vnode *, xfs_ino_t);
 495 void            xfs_iput(xfs_inode_t *, uint);
 496 void            xfs_iput_new(xfs_inode_t *, uint);
 497 void            xfs_ilock(xfs_inode_t *, uint);
 498 int             xfs_ilock_nowait(xfs_inode_t *, uint);
 499 void            xfs_iunlock(xfs_inode_t *, uint);
 500 void            xfs_ilock_demote(xfs_inode_t *, uint);
 501 void            xfs_iflock(xfs_inode_t *);
 502 int             xfs_iflock_nowait(xfs_inode_t *);
 503 uint            xfs_ilock_map_shared(xfs_inode_t *);
 504 void            xfs_iunlock_map_shared(xfs_inode_t *, uint);
 505 void            xfs_ifunlock(xfs_inode_t *);
 506 void            xfs_ireclaim(xfs_inode_t *);
 507 int             xfs_finish_reclaim(xfs_inode_t *, int, int);
 508
 509 /*
 510  * xfs_inode.c prototypes.
 511  */
 512 int             xfs_inotobp(struct xfs_mount *, struct xfs_trans *, xfs_ino_t,
 513                             xfs_dinode_t **, struct xfs_buf **, int *);
 514 int             xfs_itobp(struct xfs_mount *, struct xfs_trans *,
 515                           xfs_inode_t *, xfs_dinode_t **, struct xfs_buf **,
 516                           xfs_daddr_t);
 517 int             xfs_iread(struct xfs_mount *, struct xfs_trans *, xfs_ino_t,
 518                           xfs_inode_t **, xfs_daddr_t);
 519 int             xfs_iread_extents(struct xfs_trans *, xfs_inode_t *, int);
 520 int             xfs_ialloc(struct xfs_trans *, xfs_inode_t *, mode_t, nlink_t,
 521                            dev_t, struct cred *, xfs_prid_t, int,
 522                            struct xfs_buf **, boolean_t *, xfs_inode_t **);
 523 void            xfs_xlate_dinode_core(xfs_caddr_t, struct xfs_dinode_core *, int,
 524                            xfs_arch_t);
 525 int             xfs_ifree(struct xfs_trans *, xfs_inode_t *);
 526 int             xfs_atruncate_start(xfs_inode_t *);
 527 void            xfs_itruncate_start(xfs_inode_t *, uint, xfs_fsize_t);
 528 int             xfs_itruncate_finish(struct xfs_trans **, xfs_inode_t *,
 529                                      xfs_fsize_t, int, int);
 530 int             xfs_iunlink(struct xfs_trans *, xfs_inode_t *);
 531 int             xfs_igrow_start(xfs_inode_t *, xfs_fsize_t, struct cred *);
 532 void            xfs_igrow_finish(struct xfs_trans *, xfs_inode_t *,
 533                                  xfs_fsize_t, int);
 534
 535 void            xfs_idestroy_fork(xfs_inode_t *, int);
 536 void            xfs_idestroy(xfs_inode_t *);
 537 void            xfs_idata_realloc(xfs_inode_t *, int, int);
 538 void            xfs_iextract(xfs_inode_t *);
 539 void            xfs_iext_realloc(xfs_inode_t *, int, int);
 540 void            xfs_iroot_realloc(xfs_inode_t *, int, int);
 541 void            xfs_ipin(xfs_inode_t *);
 542 void            xfs_iunpin(xfs_inode_t *);
 543 int             xfs_iextents_copy(xfs_inode_t *, xfs_bmbt_rec_32_t *, int);
 544 int             xfs_iflush(xfs_inode_t *, uint);
 545 int             xfs_iflush_all(struct xfs_mount *, int);
 546 int             xfs_ibusy_check(xfs_inode_t *, int);
 547 int             xfs_iaccess(xfs_inode_t *, mode_t, cred_t *);
 548 uint            xfs_iroundup(uint);
 549 void            xfs_ichgtime(xfs_inode_t *, int);
 550 xfs_fsize_t     xfs_file_last_byte(xfs_inode_t *);
 551 void            xfs_lock_inodes(xfs_inode_t **, int, int, uint);
 552
 553 #define xfs_ipincount(ip)       ((unsigned int) atomic_read(&ip->i_pincount))
 554
 555
 556
 557 #ifdef DEBUG
 558 void            xfs_isize_check(struct xfs_mount *, xfs_inode_t *, xfs_fsize_t);
 559 #else   /* DEBUG */
 560 #define xfs_isize_check(mp, ip, isize)
 561 #endif  /* DEBUG */
 562
 563 #if defined(DEBUG)
 564 void            xfs_inobp_check(struct xfs_mount *, struct xfs_buf *);
 565 #else
 566 #define xfs_inobp_check(mp, bp)
 567 #endif /* DEBUG */
 568
 569 extern struct kmem_zone *xfs_chashlist_zone;
 570 extern struct kmem_zone *xfs_ifork_zone;
 571 extern struct kmem_zone *xfs_inode_zone;
 572 extern struct kmem_zone *xfs_ili_zone;
 573 extern struct vnodeops  xfs_vnodeops;
 574
 575 #ifdef XFS_ILOCK_TRACE
 576 #define XFS_ILOCK_KTRACE_SIZE   32
 577 void    xfs_ilock_trace(xfs_inode_t *ip, int lock, unsigned int lockflags,
 578                         inst_t *ra);
 579 #endif
 580
 581 #endif  /* __KERNEL__ */
 582
 583 #endif  /* __XFS_INODE_H__ */