fs/xfs/xfs_inode.h

   1 /*
   2  * Copyright (c) 2000-2003,2005 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_INODE_H__
  19 #define __XFS_INODE_H__
  20
  21 struct xfs_dinode;
  22 struct xfs_dinode_core;
  23 struct xfs_inode;
  24
  25 /*
  26  * Fork identifiers.
  27  */
  28 #define XFS_DATA_FORK   0
  29 #define XFS_ATTR_FORK   1
  30
  31 /*
  32  * The following xfs_ext_irec_t struct introduces a second (top) level
  33  * to the in-core extent allocation scheme. These structs are allocated
  34  * in a contiguous block, creating an indirection array where each entry
  35  * (irec) contains a pointer to a buffer of in-core extent records which
  36  * it manages. Each extent buffer is 4k in size, since 4k is the system
  37  * page size on Linux i386 and systems with larger page sizes don't seem
  38  * to gain much, if anything, by using their native page size as the
  39  * extent buffer size. Also, using 4k extent buffers everywhere provides
  40  * a consistent interface for CXFS across different platforms.
  41  *
  42  * There is currently no limit on the number of irec's (extent lists)
  43  * allowed, so heavily fragmented files may require an indirection array
  44  * which spans multiple system pages of memory. The number of extents
  45  * which would require this amount of contiguous memory is very large
  46  * and should not cause problems in the foreseeable future. However,
  47  * if the memory needed for the contiguous array ever becomes a problem,
  48  * it is possible that a third level of indirection may be required.
  49  */
  50 typedef struct xfs_ext_irec {
  51         xfs_bmbt_rec_host_t *er_extbuf; /* block of extent records */
  52         xfs_extnum_t    er_extoff;      /* extent offset in file */
  53         xfs_extnum_t    er_extcount;    /* number of extents in page/block */
  54 } xfs_ext_irec_t;
  55
  56 /*
  57  * File incore extent information, present for each of data & attr forks.
  58  */
  59 #define XFS_IEXT_BUFSZ          4096
  60 #define XFS_LINEAR_EXTS         (XFS_IEXT_BUFSZ / (uint)sizeof(xfs_bmbt_rec_t))
  61 #define XFS_INLINE_EXTS         2
  62 #define XFS_INLINE_DATA         32
  63 typedef struct xfs_ifork {
  64         int                     if_bytes;       /* bytes in if_u1 */
  65         int                     if_real_bytes;  /* bytes allocated in if_u1 */
  66         struct xfs_btree_block  *if_broot;      /* file's incore btree root */
  67         short                   if_broot_bytes; /* bytes allocated for root */
  68         unsigned char           if_flags;       /* per-fork flags */
  69         unsigned char           if_ext_max;     /* max # of extent records */
  70         xfs_extnum_t            if_lastex;      /* last if_extents used */
  71         union {
  72                 xfs_bmbt_rec_host_t *if_extents;/* linear map file exts */
  73                 xfs_ext_irec_t  *if_ext_irec;   /* irec map file exts */
  74                 char            *if_data;       /* inline file data */
  75         } if_u1;
  76         union {
  77                 xfs_bmbt_rec_host_t if_inline_ext[XFS_INLINE_EXTS];
  78                                                 /* very small file extents */
  79                 char            if_inline_data[XFS_INLINE_DATA];
  80                                                 /* very small file data */
  81                 xfs_dev_t       if_rdev;        /* dev number if special */
  82                 uuid_t          if_uuid;        /* mount point value */
  83         } if_u2;
  84 } xfs_ifork_t;
  85
  86 /*
  87  * This is the xfs in-core inode structure.
  88  * Most of the on-disk inode is embedded in the i_d field.
  89  *
  90  * The extent pointers/inline file space, however, are managed
  91  * separately.  The memory for this information is pointed to by
  92  * the if_u1 unions depending on the type of the data.
  93  * This is used to linearize the array of extents for fast in-core
  94  * access.  This is used until the file's number of extents
  95  * surpasses XFS_MAX_INCORE_EXTENTS, at which point all extent pointers
  96  * are accessed through the buffer cache.
  97  *
  98  * Other state kept in the in-core inode is used for identification,
  99  * locking, transactional updating, etc of the inode.
 100  *
 101  * Generally, we do not want to hold the i_rlock while holding the
 102  * i_ilock. Hierarchy is i_iolock followed by i_rlock.
 103  *
 104  * xfs_iptr_t contains all the inode fields upto and including the
 105  * i_mnext and i_mprev fields, it is used as a marker in the inode
 106  * chain off the mount structure by xfs_sync calls.
 107  */
 108
 109 typedef struct xfs_ictimestamp {
 110         __int32_t       t_sec;          /* timestamp seconds */
 111         __int32_t       t_nsec;         /* timestamp nanoseconds */
 112 } xfs_ictimestamp_t;
 113
 114 /*
 115  * NOTE:  This structure must be kept identical to struct xfs_dinode_core
 116  *        in xfs_dinode.h except for the endianess annotations.
 117  */
 118 typedef struct xfs_icdinode {
 119         __uint16_t      di_magic;       /* inode magic # = XFS_DINODE_MAGIC */
 120         __uint16_t      di_mode;        /* mode and type of file */
 121         __int8_t        di_version;     /* inode version */
 122         __int8_t        di_format;      /* format of di_c data */
 123         __uint16_t      di_onlink;      /* old number of links to file */
 124         __uint32_t      di_uid;         /* owner's user id */
 125         __uint32_t      di_gid;         /* owner's group id */
 126         __uint32_t      di_nlink;       /* number of links to file */
 127         __uint16_t      di_projid;      /* owner's project id */
 128         __uint8_t       di_pad[8];      /* unused, zeroed space */
 129         __uint16_t      di_flushiter;   /* incremented on flush */
 130         xfs_ictimestamp_t di_atime;     /* time last accessed */
 131         xfs_ictimestamp_t di_mtime;     /* time last modified */
 132         xfs_ictimestamp_t di_ctime;     /* time created/inode modified */
 133         xfs_fsize_t     di_size;        /* number of bytes in file */
 134         xfs_drfsbno_t   di_nblocks;     /* # of direct & btree blocks used */
 135         xfs_extlen_t    di_extsize;     /* basic/minimum extent size for file */
 136         xfs_extnum_t    di_nextents;    /* number of extents in data fork */
 137         xfs_aextnum_t   di_anextents;   /* number of extents in attribute fork*/
 138         __uint8_t       di_forkoff;     /* attr fork offs, <<3 for 64b align */
 139         __int8_t        di_aformat;     /* format of attr fork's data */
 140         __uint32_t      di_dmevmask;    /* DMIG event mask */
 141         __uint16_t      di_dmstate;     /* DMIG state info */
 142         __uint16_t      di_flags;       /* random flags, XFS_DIFLAG_... */
 143         __uint32_t      di_gen;         /* generation number */
 144 } xfs_icdinode_t;
 145
 146 /*
 147  * Flags for xfs_ichgtime().
 148  */
 149 #define XFS_ICHGTIME_MOD        0x1     /* data fork modification timestamp */
 150 #define XFS_ICHGTIME_CHG        0x2     /* inode field change timestamp */
 151
 152 /*
 153  * Per-fork incore inode flags.
 154  */
 155 #define XFS_IFINLINE    0x01    /* Inline data is read in */
 156 #define XFS_IFEXTENTS   0x02    /* All extent pointers are read in */
 157 #define XFS_IFBROOT     0x04    /* i_broot points to the bmap b-tree root */
 158 #define XFS_IFEXTIREC   0x08    /* Indirection array of extent blocks */
 159
 160 /*
 161  * Flags for xfs_itobp(), xfs_imap() and xfs_dilocate().
 162  */
 163 #define XFS_IMAP_LOOKUP         0x1
 164 #define XFS_IMAP_BULKSTAT       0x2
 165
 166 /*
 167  * Fork handling.
 168  */
 169
 170 #define XFS_IFORK_Q(ip)                 ((ip)->i_d.di_forkoff != 0)
 171 #define XFS_IFORK_BOFF(ip)              ((int)((ip)->i_d.di_forkoff << 3))
 172
 173 #define XFS_IFORK_PTR(ip,w)             \
 174         ((w) == XFS_DATA_FORK ? \
 175                 &(ip)->i_df : \
 176                 (ip)->i_afp)
 177 #define XFS_IFORK_DSIZE(ip) \
 178         (XFS_IFORK_Q(ip) ? \
 179                 XFS_IFORK_BOFF(ip) : \
 180                 XFS_LITINO((ip)->i_mount))
 181 #define XFS_IFORK_ASIZE(ip) \
 182         (XFS_IFORK_Q(ip) ? \
 183                 XFS_LITINO((ip)->i_mount) - XFS_IFORK_BOFF(ip) : \
 184                 0)
 185 #define XFS_IFORK_SIZE(ip,w) \
 186         ((w) == XFS_DATA_FORK ? \
 187                 XFS_IFORK_DSIZE(ip) : \
 188                 XFS_IFORK_ASIZE(ip))
 189 #define XFS_IFORK_FORMAT(ip,w) \
 190         ((w) == XFS_DATA_FORK ? \
 191                 (ip)->i_d.di_format : \
 192                 (ip)->i_d.di_aformat)
 193 #define XFS_IFORK_FMT_SET(ip,w,n) \
 194         ((w) == XFS_DATA_FORK ? \
 195                 ((ip)->i_d.di_format = (n)) : \
 196                 ((ip)->i_d.di_aformat = (n)))
 197 #define XFS_IFORK_NEXTENTS(ip,w) \
 198         ((w) == XFS_DATA_FORK ? \
 199                 (ip)->i_d.di_nextents : \
 200                 (ip)->i_d.di_anextents)
 201 #define XFS_IFORK_NEXT_SET(ip,w,n) \
 202         ((w) == XFS_DATA_FORK ? \
 203                 ((ip)->i_d.di_nextents = (n)) : \
 204                 ((ip)->i_d.di_anextents = (n)))
 205
 206
 207
 208 #ifdef __KERNEL__
 209
 210 struct bhv_desc;
 211 struct cred;
 212 struct ktrace;
 213 struct xfs_buf;
 214 struct xfs_bmap_free;
 215 struct xfs_bmbt_irec;
 216 struct xfs_inode_log_item;
 217 struct xfs_mount;
 218 struct xfs_trans;
 219 struct xfs_dquot;
 220
 221 #if defined(XFS_ILOCK_TRACE)
 222 #define XFS_ILOCK_KTRACE_SIZE   32
 223 extern ktrace_t *xfs_ilock_trace_buf;
 224 extern void xfs_ilock_trace(struct xfs_inode *, int, unsigned int, inst_t *);
 225 #else
 226 #define xfs_ilock_trace(i,n,f,ra)
 227 #endif
 228
 229 typedef struct dm_attrs_s {
 230         __uint32_t      da_dmevmask;    /* DMIG event mask */
 231         __uint16_t      da_dmstate;     /* DMIG state info */
 232         __uint16_t      da_pad;         /* DMIG extra padding */
 233 } dm_attrs_t;
 234
 235 typedef struct xfs_inode {
 236         /* Inode linking and identification information. */
 237         struct xfs_mount        *i_mount;       /* fs mount struct ptr */
 238         struct list_head        i_reclaim;      /* reclaim list */
 239         struct xfs_dquot        *i_udquot;      /* user dquot */
 240         struct xfs_dquot        *i_gdquot;      /* group dquot */
 241
 242         /* Inode location stuff */
 243         xfs_ino_t               i_ino;          /* inode number (agno/agino)*/
 244         xfs_daddr_t             i_blkno;        /* blkno of inode buffer */
 245         ushort                  i_len;          /* len of inode buffer */
 246         ushort                  i_boffset;      /* off of inode in buffer */
 247
 248         /* Extent information. */
 249         xfs_ifork_t             *i_afp;         /* attribute fork pointer */
 250         xfs_ifork_t             i_df;           /* data fork */
 251
 252         /* Transaction and locking information. */
 253         struct xfs_trans        *i_transp;      /* ptr to owning transaction*/
 254         struct xfs_inode_log_item *i_itemp;     /* logging information */
 255         mrlock_t                i_lock;         /* inode lock */
 256         mrlock_t                i_iolock;       /* inode IO lock */
 257         struct completion       i_flush;        /* inode flush completion q */
 258         atomic_t                i_pincount;     /* inode pin count */
 259         wait_queue_head_t       i_ipin_wait;    /* inode pinning wait queue */
 260         spinlock_t              i_flags_lock;   /* inode i_flags lock */
 261         /* Miscellaneous state. */
 262         unsigned short          i_flags;        /* see defined flags below */
 263         unsigned char           i_update_core;  /* timestamps/size is dirty */
 264         unsigned char           i_update_size;  /* di_size field is dirty */
 265         unsigned int            i_gen;          /* generation count */
 266         unsigned int            i_delayed_blks; /* count of delay alloc blks */
 267
 268         xfs_icdinode_t          i_d;            /* most of ondisk inode */
 269
 270         xfs_fsize_t             i_size;         /* in-memory size */
 271         xfs_fsize_t             i_new_size;     /* size when write completes */
 272         atomic_t                i_iocount;      /* outstanding I/O count */
 273
 274         /* VFS inode */
 275         struct inode            i_vnode;        /* embedded VFS inode */
 276
 277         /* Trace buffers per inode. */
 278 #ifdef XFS_INODE_TRACE
 279         struct ktrace           *i_trace;       /* general inode trace */
 280 #endif
 281 #ifdef XFS_BMAP_TRACE
 282         struct ktrace           *i_xtrace;      /* inode extent list trace */
 283 #endif
 284 #ifdef XFS_BTREE_TRACE
 285         struct ktrace           *i_btrace;      /* inode bmap btree trace */
 286 #endif
 287 #ifdef XFS_RW_TRACE
 288         struct ktrace           *i_rwtrace;     /* inode read/write trace */
 289 #endif
 290 #ifdef XFS_ILOCK_TRACE
 291         struct ktrace           *i_lock_trace;  /* inode lock/unlock trace */
 292 #endif
 293 #ifdef XFS_DIR2_TRACE
 294         struct ktrace           *i_dir_trace;   /* inode directory trace */
 295 #endif
 296 } xfs_inode_t;
 297
 298 #define XFS_ISIZE(ip)   (((ip)->i_d.di_mode & S_IFMT) == S_IFREG) ? \
 299                                 (ip)->i_size : (ip)->i_d.di_size;
 300
 301 /* Convert from vfs inode to xfs inode */
 302 static inline struct xfs_inode *XFS_I(struct inode *inode)
 303 {
 304         return container_of(inode, struct xfs_inode, i_vnode);
 305 }
 306
 307 /* convert from xfs inode to vfs inode */
 308 static inline struct inode *VFS_I(struct xfs_inode *ip)
 309 {
 310         return &ip->i_vnode;
 311 }
 312
 313 /*
 314  * i_flags helper functions
 315  */
 316 static inline void
 317 __xfs_iflags_set(xfs_inode_t *ip, unsigned short flags)
 318 {
 319         ip->i_flags |= flags;
 320 }
 321
 322 static inline void
 323 xfs_iflags_set(xfs_inode_t *ip, unsigned short flags)
 324 {
 325         spin_lock(&ip->i_flags_lock);
 326         __xfs_iflags_set(ip, flags);
 327         spin_unlock(&ip->i_flags_lock);
 328 }
 329
 330 static inline void
 331 xfs_iflags_clear(xfs_inode_t *ip, unsigned short flags)
 332 {
 333         spin_lock(&ip->i_flags_lock);
 334         ip->i_flags &= ~flags;
 335         spin_unlock(&ip->i_flags_lock);
 336 }
 337
 338 static inline int
 339 __xfs_iflags_test(xfs_inode_t *ip, unsigned short flags)
 340 {
 341         return (ip->i_flags & flags);
 342 }
 343
 344 static inline int
 345 xfs_iflags_test(xfs_inode_t *ip, unsigned short flags)
 346 {
 347         int ret;
 348         spin_lock(&ip->i_flags_lock);
 349         ret = __xfs_iflags_test(ip, flags);
 350         spin_unlock(&ip->i_flags_lock);
 351         return ret;
 352 }
 353
 354 static inline int
 355 xfs_iflags_test_and_clear(xfs_inode_t *ip, unsigned short flags)
 356 {
 357         int ret;
 358
 359         spin_lock(&ip->i_flags_lock);
 360         ret = ip->i_flags & flags;
 361         if (ret)
 362                 ip->i_flags &= ~flags;
 363         spin_unlock(&ip->i_flags_lock);
 364         return ret;
 365 }
 366
 367 /*
 368  * Manage the i_flush queue embedded in the inode.  This completion
 369  * queue synchronizes processes attempting to flush the in-core
 370  * inode back to disk.
 371  */
 372 static inline void xfs_iflock(xfs_inode_t *ip)
 373 {
 374         wait_for_completion(&ip->i_flush);
 375 }
 376
 377 static inline int xfs_iflock_nowait(xfs_inode_t *ip)
 378 {
 379         return try_wait_for_completion(&ip->i_flush);
 380 }
 381
 382 static inline void xfs_ifunlock(xfs_inode_t *ip)
 383 {
 384         complete(&ip->i_flush);
 385 }
 386
 387 /*
 388  * In-core inode flags.
 389  */
 390 #define XFS_IGRIO       0x0001  /* inode used for guaranteed rate i/o */
 391 #define XFS_IUIOSZ      0x0002  /* inode i/o sizes have been explicitly set */
 392 #define XFS_IQUIESCE    0x0004  /* we have started quiescing for this inode */
 393 #define XFS_IRECLAIM    0x0008  /* we have started reclaiming this inode    */
 394 #define XFS_ISTALE      0x0010  /* inode has been staled */
 395 #define XFS_IRECLAIMABLE 0x0020 /* inode can be reclaimed */
 396 #define XFS_INEW        0x0040
 397 #define XFS_IFILESTREAM 0x0080  /* inode is in a filestream directory */
 398 #define XFS_IMODIFIED   0x0100  /* XFS inode state possibly differs */
 399                                 /* to the Linux inode state. */
 400 #define XFS_ITRUNCATED  0x0200  /* truncated down so flush-on-close */
 401
 402 /*
 403  * Flags for inode locking.
 404  * Bit ranges:  1<<1  - 1<<16-1 -- iolock/ilock modes (bitfield)
 405  *              1<<16 - 1<<32-1 -- lockdep annotation (integers)
 406  */
 407 #define XFS_IOLOCK_EXCL         (1<<0)
 408 #define XFS_IOLOCK_SHARED       (1<<1)
 409 #define XFS_ILOCK_EXCL          (1<<2)
 410 #define XFS_ILOCK_SHARED        (1<<3)
 411 #define XFS_IUNLOCK_NONOTIFY    (1<<4)
 412
 413 #define XFS_LOCK_MASK           (XFS_IOLOCK_EXCL | XFS_IOLOCK_SHARED \
 414                                 | XFS_ILOCK_EXCL | XFS_ILOCK_SHARED)
 415
 416 /*
 417  * Flags for lockdep annotations.
 418  *
 419  * XFS_I[O]LOCK_PARENT - for operations that require locking two inodes
 420  * (ie directory operations that require locking a directory inode and
 421  * an entry inode).  The first inode gets locked with this flag so it
 422  * gets a lockdep subclass of 1 and the second lock will have a lockdep
 423  * subclass of 0.
 424  *
 425  * XFS_LOCK_INUMORDER - for locking several inodes at the some time
 426  * with xfs_lock_inodes().  This flag is used as the starting subclass
 427  * and each subsequent lock acquired will increment the subclass by one.
 428  * So the first lock acquired will have a lockdep subclass of 2, the
 429  * second lock will have a lockdep subclass of 3, and so on. It is
 430  * the responsibility of the class builder to shift this to the correct
 431  * portion of the lock_mode lockdep mask.
 432  */
 433 #define XFS_LOCK_PARENT         1
 434 #define XFS_LOCK_INUMORDER      2
 435
 436 #define XFS_IOLOCK_SHIFT        16
 437 #define XFS_IOLOCK_PARENT       (XFS_LOCK_PARENT << XFS_IOLOCK_SHIFT)
 438
 439 #define XFS_ILOCK_SHIFT         24
 440 #define XFS_ILOCK_PARENT        (XFS_LOCK_PARENT << XFS_ILOCK_SHIFT)
 441
 442 #define XFS_IOLOCK_DEP_MASK     0x00ff0000
 443 #define XFS_ILOCK_DEP_MASK      0xff000000
 444 #define XFS_LOCK_DEP_MASK       (XFS_IOLOCK_DEP_MASK | XFS_ILOCK_DEP_MASK)
 445
 446 #define XFS_IOLOCK_DEP(flags)   (((flags) & XFS_IOLOCK_DEP_MASK) >> XFS_IOLOCK_SHIFT)
 447 #define XFS_ILOCK_DEP(flags)    (((flags) & XFS_ILOCK_DEP_MASK) >> XFS_ILOCK_SHIFT)
 448
 449 /*
 450  * Flags for xfs_iflush()
 451  */
 452 #define XFS_IFLUSH_DELWRI_ELSE_SYNC     1
 453 #define XFS_IFLUSH_DELWRI_ELSE_ASYNC    2
 454 #define XFS_IFLUSH_SYNC                 3
 455 #define XFS_IFLUSH_ASYNC                4
 456 #define XFS_IFLUSH_DELWRI               5
 457 #define XFS_IFLUSH_ASYNC_NOBLOCK        6
 458
 459 /*
 460  * Flags for xfs_itruncate_start().
 461  */
 462 #define XFS_ITRUNC_DEFINITE     0x1
 463 #define XFS_ITRUNC_MAYBE        0x2
 464
 465 /*
 466  * For multiple groups support: if S_ISGID bit is set in the parent
 467  * directory, group of new file is set to that of the parent, and
 468  * new subdirectory gets S_ISGID bit from parent.
 469  */
 470 #define XFS_INHERIT_GID(pip)    \
 471         (((pip)->i_mount->m_flags & XFS_MOUNT_GRPID) || \
 472          ((pip)->i_d.di_mode & S_ISGID))
 473
 474 /*
 475  * Flags for xfs_iget()
 476  */
 477 #define XFS_IGET_CREATE         0x1
 478 #define XFS_IGET_BULKSTAT       0x2
 479
 480 /*
 481  * xfs_iget.c prototypes.
 482  */
 483 void            xfs_ihash_init(struct xfs_mount *);
 484 void            xfs_ihash_free(struct xfs_mount *);
 485 xfs_inode_t     *xfs_inode_incore(struct xfs_mount *, xfs_ino_t,
 486                                   struct xfs_trans *);
 487 int             xfs_iget(struct xfs_mount *, struct xfs_trans *, xfs_ino_t,
 488                          uint, uint, xfs_inode_t **, xfs_daddr_t);
 489 void            xfs_iput(xfs_inode_t *, uint);
 490 void            xfs_iput_new(xfs_inode_t *, uint);
 491 void            xfs_ilock(xfs_inode_t *, uint);
 492 int             xfs_ilock_nowait(xfs_inode_t *, uint);
 493 void            xfs_iunlock(xfs_inode_t *, uint);
 494 void            xfs_ilock_demote(xfs_inode_t *, uint);
 495 int             xfs_isilocked(xfs_inode_t *, uint);
 496 uint            xfs_ilock_map_shared(xfs_inode_t *);
 497 void            xfs_iunlock_map_shared(xfs_inode_t *, uint);
 498 void            xfs_ireclaim(xfs_inode_t *);
 499 int             xfs_finish_reclaim(xfs_inode_t *, int, int);
 500 int             xfs_finish_reclaim_all(struct xfs_mount *, int, int);
 501
 502 /*
 503  * xfs_inode.c prototypes.
 504  */
 505 int             xfs_iread(struct xfs_mount *, struct xfs_trans *, xfs_ino_t,
 506                           xfs_inode_t **, xfs_daddr_t, uint);
 507 int             xfs_ialloc(struct xfs_trans *, xfs_inode_t *, mode_t,
 508                            xfs_nlink_t, xfs_dev_t, struct cred *, xfs_prid_t,
 509                            int, struct xfs_buf **, boolean_t *, xfs_inode_t **);
 510
 511 uint            xfs_ip2xflags(struct xfs_inode *);
 512 uint            xfs_dic2xflags(struct xfs_dinode *);
 513 int             xfs_ifree(struct xfs_trans *, xfs_inode_t *,
 514                            struct xfs_bmap_free *);
 515 int             xfs_itruncate_start(xfs_inode_t *, uint, xfs_fsize_t);
 516 int             xfs_itruncate_finish(struct xfs_trans **, xfs_inode_t *,
 517                                      xfs_fsize_t, int, int);
 518 int             xfs_iunlink(struct xfs_trans *, xfs_inode_t *);
 519
 520 struct xfs_inode * xfs_inode_alloc(struct xfs_mount *, xfs_ino_t);
 521 void            xfs_idestroy(xfs_inode_t *);
 522 void            xfs_iextract(xfs_inode_t *);
 523 void            xfs_iext_realloc(xfs_inode_t *, int, int);
 524 void            xfs_ipin(xfs_inode_t *);
 525 void            xfs_iunpin(xfs_inode_t *);
 526 int             xfs_iflush(xfs_inode_t *, uint);
 527 void            xfs_ichgtime(xfs_inode_t *, int);
 528 xfs_fsize_t     xfs_file_last_byte(xfs_inode_t *);
 529 void            xfs_lock_inodes(xfs_inode_t **, int, uint);
 530 void            xfs_lock_two_inodes(xfs_inode_t *, xfs_inode_t *, uint);
 531
 532 void            xfs_synchronize_atime(xfs_inode_t *);
 533 void            xfs_mark_inode_dirty_sync(xfs_inode_t *);
 534
 535 #endif /* __KERNEL__ */
 536
 537 int             xfs_itobp(struct xfs_mount *, struct xfs_trans *,
 538                           struct xfs_inode *, struct xfs_dinode **,
 539                           struct xfs_buf **, xfs_daddr_t, uint, uint);
 540 void            xfs_dinode_from_disk(struct xfs_icdinode *,
 541                                      struct xfs_dinode_core *);
 542 void            xfs_dinode_to_disk(struct xfs_dinode_core *,
 543                                    struct xfs_icdinode *);
 544 void            xfs_idestroy_fork(struct xfs_inode *, int);
 545 void            xfs_idata_realloc(struct xfs_inode *, int, int);
 546 void            xfs_iroot_realloc(struct xfs_inode *, int, int);
 547 int             xfs_iread_extents(struct xfs_trans *, struct xfs_inode *, int);
 548 int             xfs_iextents_copy(struct xfs_inode *, xfs_bmbt_rec_t *, int);
 549
 550 xfs_bmbt_rec_host_t *xfs_iext_get_ext(xfs_ifork_t *, xfs_extnum_t);
 551 void            xfs_iext_insert(xfs_ifork_t *, xfs_extnum_t, xfs_extnum_t,
 552                                 xfs_bmbt_irec_t *);
 553 void            xfs_iext_add(xfs_ifork_t *, xfs_extnum_t, int);
 554 void            xfs_iext_add_indirect_multi(xfs_ifork_t *, int, xfs_extnum_t, int);
 555 void            xfs_iext_remove(xfs_ifork_t *, xfs_extnum_t, int);
 556 void            xfs_iext_remove_inline(xfs_ifork_t *, xfs_extnum_t, int);
 557 void            xfs_iext_remove_direct(xfs_ifork_t *, xfs_extnum_t, int);
 558 void            xfs_iext_remove_indirect(xfs_ifork_t *, xfs_extnum_t, int);
 559 void            xfs_iext_realloc_direct(xfs_ifork_t *, int);
 560 void            xfs_iext_realloc_indirect(xfs_ifork_t *, int);
 561 void            xfs_iext_indirect_to_direct(xfs_ifork_t *);
 562 void            xfs_iext_direct_to_inline(xfs_ifork_t *, xfs_extnum_t);
 563 void            xfs_iext_inline_to_direct(xfs_ifork_t *, int);
 564 void            xfs_iext_destroy(xfs_ifork_t *);
 565 xfs_bmbt_rec_host_t *xfs_iext_bno_to_ext(xfs_ifork_t *, xfs_fileoff_t, int *);
 566 xfs_ext_irec_t  *xfs_iext_bno_to_irec(xfs_ifork_t *, xfs_fileoff_t, int *);
 567 xfs_ext_irec_t  *xfs_iext_idx_to_irec(xfs_ifork_t *, xfs_extnum_t *, int *, int);
 568 void            xfs_iext_irec_init(xfs_ifork_t *);
 569 xfs_ext_irec_t *xfs_iext_irec_new(xfs_ifork_t *, int);
 570 void            xfs_iext_irec_remove(xfs_ifork_t *, int);
 571 void            xfs_iext_irec_compact(xfs_ifork_t *);
 572 void            xfs_iext_irec_compact_pages(xfs_ifork_t *);
 573 void            xfs_iext_irec_compact_full(xfs_ifork_t *);
 574 void            xfs_iext_irec_update_extoffs(xfs_ifork_t *, int, int);
 575
 576 #define xfs_ipincount(ip)       ((unsigned int) atomic_read(&ip->i_pincount))
 577
 578 #ifdef DEBUG
 579 void            xfs_isize_check(struct xfs_mount *, struct xfs_inode *,
 580                                 xfs_fsize_t);
 581 #else   /* DEBUG */
 582 #define xfs_isize_check(mp, ip, isize)
 583 #endif  /* DEBUG */
 584
 585 #if defined(DEBUG)
 586 void            xfs_inobp_check(struct xfs_mount *, struct xfs_buf *);
 587 #else
 588 #define xfs_inobp_check(mp, bp)
 589 #endif /* DEBUG */
 590
 591 extern struct kmem_zone *xfs_ifork_zone;
 592 extern struct kmem_zone *xfs_inode_zone;
 593 extern struct kmem_zone *xfs_ili_zone;
 594
 595 #endif  /* __XFS_INODE_H__ */