fs/xfs/xfs_inode.h

   1 /*
   2  * Copyright (c) 2000-2003 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
 102 #if defined(XFS_ILOCK_TRACE)
 103 #define XFS_ILOCK_KTRACE_SIZE   32
 104 extern ktrace_t *xfs_ilock_trace_buf;
 105 extern void xfs_ilock_trace(struct xfs_inode *, int, unsigned int, inst_t *);
 106 #else
 107 #define xfs_ilock_trace(i,n,f,ra)
 108 #endif
 109
 110 /*
 111  * This structure is used to communicate which extents of a file
 112  * were holes when a write started from xfs_write_file() to
 113  * xfs_strat_read().  This is necessary so that we can know which
 114  * blocks need to be zeroed when they are read in in xfs_strat_read()
 115  * if they weren\'t allocated when the buffer given to xfs_strat_read()
 116  * was mapped.
 117  *
 118  * We keep a list of these attached to the inode.  The list is
 119  * protected by the inode lock and the fact that the io lock is
 120  * held exclusively by writers.
 121  */
 122 typedef struct xfs_gap {
 123         struct xfs_gap  *xg_next;
 124         xfs_fileoff_t   xg_offset_fsb;
 125         xfs_extlen_t    xg_count_fsb;
 126 } xfs_gap_t;
 127
 128 typedef struct dm_attrs_s {
 129         __uint32_t      da_dmevmask;    /* DMIG event mask */
 130         __uint16_t      da_dmstate;     /* DMIG state info */
 131         __uint16_t      da_pad;         /* DMIG extra padding */
 132 } dm_attrs_t;
 133
 134 typedef struct xfs_iocore {
 135         void                    *io_obj;        /* pointer to container
 136                                                  * inode or dcxvn structure */
 137         struct xfs_mount        *io_mount;      /* fs mount struct ptr */
 138 #ifdef DEBUG
 139         mrlock_t                *io_lock;       /* inode IO lock */
 140         mrlock_t                *io_iolock;     /* inode IO lock */
 141 #endif
 142
 143         /* I/O state */
 144         xfs_fsize_t             io_new_size;    /* sz when write completes */
 145
 146         /* Miscellaneous state. */
 147         unsigned int            io_flags;       /* IO related flags */
 148
 149         /* DMAPI state */
 150         dm_attrs_t              io_dmattrs;
 151
 152 } xfs_iocore_t;
 153
 154 #define        io_dmevmask     io_dmattrs.da_dmevmask
 155 #define        io_dmstate      io_dmattrs.da_dmstate
 156
 157 #define XFS_IO_INODE(io)        ((xfs_inode_t *) ((io)->io_obj))
 158 #define XFS_IO_DCXVN(io)        ((dcxvn_t *) ((io)->io_obj))
 159
 160 /*
 161  * Flags in the flags field
 162  */
 163
 164 #define XFS_IOCORE_RT           0x1
 165
 166 /*
 167  * xfs_iocore prototypes
 168  */
 169
 170 extern void xfs_iocore_inode_init(struct xfs_inode *);
 171 extern void xfs_iocore_inode_reinit(struct xfs_inode *);
 172
 173
 174 /*
 175  * This is the type used in the xfs inode hash table.
 176  * An array of these is allocated for each mounted
 177  * file system to hash the inodes for that file system.
 178  */
 179 typedef struct xfs_ihash {
 180         struct xfs_inode        *ih_next;
 181         rwlock_t                ih_lock;
 182         uint                    ih_version;
 183 } xfs_ihash_t;
 184
 185 #define XFS_IHASH(mp,ino) ((mp)->m_ihash + (((uint)(ino)) % (mp)->m_ihsize))
 186
 187 /*
 188  * This is the xfs inode cluster hash.  This hash is used by xfs_iflush to
 189  * find inodes that share a cluster and can be flushed to disk at the same
 190  * time.
 191  */
 192 typedef struct xfs_chashlist {
 193         struct xfs_chashlist    *chl_next;
 194         struct xfs_inode        *chl_ip;
 195         xfs_daddr_t             chl_blkno;      /* starting block number of
 196                                                  * the cluster */
 197         struct xfs_buf          *chl_buf;       /* the inode buffer */
 198 } xfs_chashlist_t;
 199
 200 typedef struct xfs_chash {
 201         xfs_chashlist_t         *ch_list;
 202         lock_t                  ch_lock;
 203 } xfs_chash_t;
 204
 205 #define XFS_CHASH(mp,blk) ((mp)->m_chash + (((uint)blk) % (mp)->m_chsize))
 206
 207
 208 /*
 209  * This is the xfs in-core inode structure.
 210  * Most of the on-disk inode is embedded in the i_d field.
 211  *
 212  * The extent pointers/inline file space, however, are managed
 213  * separately.  The memory for this information is pointed to by
 214  * the if_u1 unions depending on the type of the data.
 215  * This is used to linearize the array of extents for fast in-core
 216  * access.  This is used until the file's number of extents
 217  * surpasses XFS_MAX_INCORE_EXTENTS, at which point all extent pointers
 218  * are accessed through the buffer cache.
 219  *
 220  * Other state kept in the in-core inode is used for identification,
 221  * locking, transactional updating, etc of the inode.
 222  *
 223  * Generally, we do not want to hold the i_rlock while holding the
 224  * i_ilock. Hierarchy is i_iolock followed by i_rlock.
 225  *
 226  * xfs_iptr_t contains all the inode fields upto and including the
 227  * i_mnext and i_mprev fields, it is used as a marker in the inode
 228  * chain off the mount structure by xfs_sync calls.
 229  */
 230
 231 typedef struct {
 232         struct xfs_ihash        *ip_hash;       /* pointer to hash header */
 233         struct xfs_inode        *ip_next;       /* inode hash link forw */
 234         struct xfs_inode        *ip_mnext;      /* next inode in mount list */
 235         struct xfs_inode        *ip_mprev;      /* ptr to prev inode */
 236         struct xfs_inode        **ip_prevp;     /* ptr to prev i_next */
 237         struct xfs_mount        *ip_mount;      /* fs mount struct ptr */
 238 } xfs_iptr_t;
 239
 240 typedef struct xfs_inode {
 241         /* Inode linking and identification information. */
 242         struct xfs_ihash        *i_hash;        /* pointer to hash header */
 243         struct xfs_inode        *i_next;        /* inode hash link forw */
 244         struct xfs_inode        *i_mnext;       /* next inode in mount list */
 245         struct xfs_inode        *i_mprev;       /* ptr to prev inode */
 246         struct xfs_inode        **i_prevp;      /* ptr to prev i_next */
 247         struct xfs_mount        *i_mount;       /* fs mount struct ptr */
 248         struct list_head        i_reclaim;      /* reclaim list */
 249         struct bhv_desc         i_bhv_desc;     /* inode behavior descriptor*/
 250         struct xfs_dquot        *i_udquot;      /* user dquot */
 251         struct xfs_dquot        *i_gdquot;      /* group dquot */
 252
 253         /* Inode location stuff */
 254         xfs_ino_t               i_ino;          /* inode number (agno/agino)*/
 255         xfs_daddr_t             i_blkno;        /* blkno of inode buffer */
 256         ushort                  i_len;          /* len of inode buffer */
 257         ushort                  i_boffset;      /* off of inode in buffer */
 258
 259         /* Extent information. */
 260         xfs_ifork_t             *i_afp;         /* attribute fork pointer */
 261         xfs_ifork_t             i_df;           /* data fork */
 262
 263         /* Transaction and locking information. */
 264         struct xfs_trans        *i_transp;      /* ptr to owning transaction*/
 265         struct xfs_inode_log_item *i_itemp;     /* logging information */
 266         mrlock_t                i_lock;         /* inode lock */
 267         mrlock_t                i_iolock;       /* inode IO lock */
 268         sema_t                  i_flock;        /* inode flush lock */
 269         atomic_t                i_pincount;     /* inode pin count */
 270         wait_queue_head_t       i_ipin_wait;    /* inode pinning wait queue */
 271 #ifdef HAVE_REFCACHE
 272         struct xfs_inode        **i_refcache;   /* ptr to entry in ref cache */
 273         struct xfs_inode        *i_release;     /* inode to unref */
 274 #endif
 275         /* I/O state */
 276         xfs_iocore_t            i_iocore;       /* I/O core */
 277
 278         /* Miscellaneous state. */
 279         unsigned short          i_flags;        /* see defined flags below */
 280         unsigned char           i_update_core;  /* timestamps/size is dirty */
 281         unsigned char           i_update_size;  /* di_size field is dirty */
 282         unsigned int            i_gen;          /* generation count */
 283         unsigned int            i_delayed_blks; /* count of delay alloc blks */
 284
 285         xfs_dinode_core_t       i_d;            /* most of ondisk inode */
 286         xfs_chashlist_t         *i_chash;       /* cluster hash list header */
 287         struct xfs_inode        *i_cnext;       /* cluster hash link forward */
 288         struct xfs_inode        *i_cprev;       /* cluster hash link backward */
 289
 290         /* Trace buffers per inode. */
 291 #ifdef XFS_BMAP_TRACE
 292         struct ktrace           *i_xtrace;      /* inode extent list trace */
 293 #endif
 294 #ifdef XFS_BMBT_TRACE
 295         struct ktrace           *i_btrace;      /* inode bmap btree trace */
 296 #endif
 297 #ifdef XFS_RW_TRACE
 298         struct ktrace           *i_rwtrace;     /* inode read/write trace */
 299 #endif
 300 #ifdef XFS_ILOCK_TRACE
 301         struct ktrace           *i_lock_trace;  /* inode lock/unlock trace */
 302 #endif
 303 #ifdef XFS_DIR2_TRACE
 304         struct ktrace           *i_dir_trace;   /* inode directory trace */
 305 #endif
 306 } xfs_inode_t;
 307
 308 #endif  /* __KERNEL__ */
 309
 310
 311 /*
 312  * Fork handling.
 313  */
 314 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_IFORK_PTR)
 315 xfs_ifork_t *xfs_ifork_ptr(xfs_inode_t *ip, int w);
 316 #define XFS_IFORK_PTR(ip,w)             xfs_ifork_ptr(ip,w)
 317 #else
 318 #define XFS_IFORK_PTR(ip,w)   ((w) == XFS_DATA_FORK ? &(ip)->i_df : (ip)->i_afp)
 319 #endif
 320 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_IFORK_Q)
 321 int xfs_ifork_q(xfs_inode_t *ip);
 322 #define XFS_IFORK_Q(ip)                 xfs_ifork_q(ip)
 323 #else
 324 #define XFS_IFORK_Q(ip)                 XFS_CFORK_Q(&(ip)->i_d)
 325 #endif
 326 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_IFORK_DSIZE)
 327 int xfs_ifork_dsize(xfs_inode_t *ip);
 328 #define XFS_IFORK_DSIZE(ip)             xfs_ifork_dsize(ip)
 329 #else
 330 #define XFS_IFORK_DSIZE(ip)             XFS_CFORK_DSIZE(&ip->i_d, ip->i_mount)
 331 #endif
 332 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_IFORK_ASIZE)
 333 int xfs_ifork_asize(xfs_inode_t *ip);
 334 #define XFS_IFORK_ASIZE(ip)             xfs_ifork_asize(ip)
 335 #else
 336 #define XFS_IFORK_ASIZE(ip)             XFS_CFORK_ASIZE(&ip->i_d, ip->i_mount)
 337 #endif
 338 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_IFORK_SIZE)
 339 int xfs_ifork_size(xfs_inode_t *ip, int w);
 340 #define XFS_IFORK_SIZE(ip,w)            xfs_ifork_size(ip,w)
 341 #else
 342 #define XFS_IFORK_SIZE(ip,w)            XFS_CFORK_SIZE(&ip->i_d, ip->i_mount, w)
 343 #endif
 344 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_IFORK_FORMAT)
 345 int xfs_ifork_format(xfs_inode_t *ip, int w);
 346 #define XFS_IFORK_FORMAT(ip,w)          xfs_ifork_format(ip,w)
 347 #else
 348 #define XFS_IFORK_FORMAT(ip,w)          XFS_CFORK_FORMAT(&ip->i_d, w)
 349 #endif
 350 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_IFORK_FMT_SET)
 351 void xfs_ifork_fmt_set(xfs_inode_t *ip, int w, int n);
 352 #define XFS_IFORK_FMT_SET(ip,w,n)       xfs_ifork_fmt_set(ip,w,n)
 353 #else
 354 #define XFS_IFORK_FMT_SET(ip,w,n)       XFS_CFORK_FMT_SET(&ip->i_d, w, n)
 355 #endif
 356 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_IFORK_NEXTENTS)
 357 int xfs_ifork_nextents(xfs_inode_t *ip, int w);
 358 #define XFS_IFORK_NEXTENTS(ip,w)        xfs_ifork_nextents(ip,w)
 359 #else
 360 #define XFS_IFORK_NEXTENTS(ip,w)        XFS_CFORK_NEXTENTS(&ip->i_d, w)
 361 #endif
 362 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_IFORK_NEXT_SET)
 363 void xfs_ifork_next_set(xfs_inode_t *ip, int w, int n);
 364 #define XFS_IFORK_NEXT_SET(ip,w,n)      xfs_ifork_next_set(ip,w,n)
 365 #else
 366 #define XFS_IFORK_NEXT_SET(ip,w,n)      XFS_CFORK_NEXT_SET(&ip->i_d, w, n)
 367 #endif
 368
 369
 370 #ifdef __KERNEL__
 371
 372 /*
 373  * In-core inode flags.
 374  */
 375 #define XFS_IGRIO       0x0001  /* inode used for guaranteed rate i/o */
 376 #define XFS_IUIOSZ      0x0002  /* inode i/o sizes have been explicitly set */
 377 #define XFS_IQUIESCE    0x0004  /* we have started quiescing for this inode */
 378 #define XFS_IRECLAIM    0x0008  /* we have started reclaiming this inode    */
 379 #define XFS_ISTALE      0x0010  /* inode has been staled */
 380 #define XFS_IRECLAIMABLE 0x0020 /* inode can be reclaimed */
 381 #define XFS_INEW        0x0040
 382
 383 /*
 384  * Flags for inode locking.
 385  */
 386 #define XFS_IOLOCK_EXCL         0x001
 387 #define XFS_IOLOCK_SHARED       0x002
 388 #define XFS_ILOCK_EXCL          0x004
 389 #define XFS_ILOCK_SHARED        0x008
 390 #define XFS_IUNLOCK_NONOTIFY    0x010
 391 #define XFS_EXTENT_TOKEN_RD     0x040
 392 #define XFS_SIZE_TOKEN_RD       0x080
 393 #define XFS_EXTSIZE_RD          (XFS_EXTENT_TOKEN_RD|XFS_SIZE_TOKEN_RD)
 394 #define XFS_WILLLEND            0x100   /* Always acquire tokens for lending */
 395 #define XFS_EXTENT_TOKEN_WR     (XFS_EXTENT_TOKEN_RD | XFS_WILLLEND)
 396 #define XFS_SIZE_TOKEN_WR       (XFS_SIZE_TOKEN_RD | XFS_WILLLEND)
 397 #define XFS_EXTSIZE_WR          (XFS_EXTSIZE_RD | XFS_WILLLEND)
 398
 399
 400 #define XFS_LOCK_MASK   \
 401         (XFS_IOLOCK_EXCL | XFS_IOLOCK_SHARED | XFS_ILOCK_EXCL | \
 402          XFS_ILOCK_SHARED | XFS_EXTENT_TOKEN_RD | XFS_SIZE_TOKEN_RD | \
 403          XFS_WILLLEND)
 404
 405 /*
 406  * Flags for xfs_iflush()
 407  */
 408 #define XFS_IFLUSH_DELWRI_ELSE_SYNC     1
 409 #define XFS_IFLUSH_DELWRI_ELSE_ASYNC    2
 410 #define XFS_IFLUSH_SYNC                 3
 411 #define XFS_IFLUSH_ASYNC                4
 412 #define XFS_IFLUSH_DELWRI               5
 413
 414 /*
 415  * Flags for xfs_itruncate_start().
 416  */
 417 #define XFS_ITRUNC_DEFINITE     0x1
 418 #define XFS_ITRUNC_MAYBE        0x2
 419
 420 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_ITOV)
 421 struct vnode *xfs_itov(xfs_inode_t *ip);
 422 #define XFS_ITOV(ip)            xfs_itov(ip)
 423 #else
 424 #define XFS_ITOV(ip)            BHV_TO_VNODE(XFS_ITOBHV(ip))
 425 #endif
 426 #define XFS_ITOV_NULL(ip)       BHV_TO_VNODE_NULL(XFS_ITOBHV(ip))
 427 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_ITOBHV)
 428 struct bhv_desc *xfs_itobhv(xfs_inode_t *ip);
 429 #define XFS_ITOBHV(ip)          xfs_itobhv(ip)
 430 #else
 431 #define XFS_ITOBHV(ip)          ((struct bhv_desc *)(&((ip)->i_bhv_desc)))
 432 #endif
 433 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BHVTOI)
 434 xfs_inode_t *xfs_bhvtoi(struct bhv_desc *bhvp);
 435 #define XFS_BHVTOI(bhvp)        xfs_bhvtoi(bhvp)
 436 #else
 437 #define XFS_BHVTOI(bhvp)        \
 438         ((xfs_inode_t *)((char *)(bhvp) - \
 439                          (char *)&(((xfs_inode_t *)0)->i_bhv_desc)))
 440 #endif
 441
 442 #define BHV_IS_XFS(bdp)         (BHV_OPS(bdp) == &xfs_vnodeops)
 443
 444 /*
 445  * For multiple groups support: if S_ISGID bit is set in the parent
 446  * directory, group of new file is set to that of the parent, and
 447  * new subdirectory gets S_ISGID bit from parent.
 448  */
 449 #define XFS_INHERIT_GID(pip, vfsp)      \
 450         (((vfsp)->vfs_flag & VFS_GRPID) || ((pip)->i_d.di_mode & S_ISGID))
 451
 452 /*
 453  * xfs_iget.c prototypes.
 454  */
 455
 456 #define IGET_CREATE     1
 457
 458 void            xfs_ihash_init(struct xfs_mount *);
 459 void            xfs_ihash_free(struct xfs_mount *);
 460 void            xfs_chash_init(struct xfs_mount *);
 461 void            xfs_chash_free(struct xfs_mount *);
 462 xfs_inode_t     *xfs_inode_incore(struct xfs_mount *, xfs_ino_t,
 463                                   struct xfs_trans *);
 464 void            xfs_inode_lock_init(xfs_inode_t *, struct vnode *);
 465 int             xfs_iget(struct xfs_mount *, struct xfs_trans *, xfs_ino_t,
 466                          uint, uint, xfs_inode_t **, xfs_daddr_t);
 467 void            xfs_iput(xfs_inode_t *, uint);
 468 void            xfs_iput_new(xfs_inode_t *, uint);
 469 void            xfs_ilock(xfs_inode_t *, uint);
 470 int             xfs_ilock_nowait(xfs_inode_t *, uint);
 471 void            xfs_iunlock(xfs_inode_t *, uint);
 472 void            xfs_ilock_demote(xfs_inode_t *, uint);
 473 void            xfs_iflock(xfs_inode_t *);
 474 int             xfs_iflock_nowait(xfs_inode_t *);
 475 uint            xfs_ilock_map_shared(xfs_inode_t *);
 476 void            xfs_iunlock_map_shared(xfs_inode_t *, uint);
 477 void            xfs_ifunlock(xfs_inode_t *);
 478 void            xfs_ireclaim(xfs_inode_t *);
 479 int             xfs_finish_reclaim(xfs_inode_t *, int, int);
 480 int             xfs_finish_reclaim_all(struct xfs_mount *, int);
 481
 482 /*
 483  * xfs_inode.c prototypes.
 484  */
 485 int             xfs_itobp(struct xfs_mount *, struct xfs_trans *,
 486                           xfs_inode_t *, xfs_dinode_t **, struct xfs_buf **,
 487                           xfs_daddr_t);
 488 int             xfs_iread(struct xfs_mount *, struct xfs_trans *, xfs_ino_t,
 489                           xfs_inode_t **, xfs_daddr_t);
 490 int             xfs_iread_extents(struct xfs_trans *, xfs_inode_t *, int);
 491 int             xfs_ialloc(struct xfs_trans *, xfs_inode_t *, mode_t,
 492                            xfs_nlink_t, xfs_dev_t, struct cred *, xfs_prid_t,
 493                            int, struct xfs_buf **, boolean_t *, xfs_inode_t **);
 494 void            xfs_xlate_dinode_core(xfs_caddr_t, struct xfs_dinode_core *,
 495                                         int);
 496 uint            xfs_ip2xflags(struct xfs_inode *);
 497 uint            xfs_dic2xflags(struct xfs_dinode_core *);
 498 int             xfs_ifree(struct xfs_trans *, xfs_inode_t *,
 499                            struct xfs_bmap_free *);
 500 void            xfs_itruncate_start(xfs_inode_t *, uint, xfs_fsize_t);
 501 int             xfs_itruncate_finish(struct xfs_trans **, xfs_inode_t *,
 502                                      xfs_fsize_t, int, int);
 503 int             xfs_iunlink(struct xfs_trans *, xfs_inode_t *);
 504 int             xfs_igrow_start(xfs_inode_t *, xfs_fsize_t, struct cred *);
 505 void            xfs_igrow_finish(struct xfs_trans *, xfs_inode_t *,
 506                                  xfs_fsize_t, int);
 507
 508 void            xfs_idestroy_fork(xfs_inode_t *, int);
 509 void            xfs_idestroy(xfs_inode_t *);
 510 void            xfs_idata_realloc(xfs_inode_t *, int, int);
 511 void            xfs_iextract(xfs_inode_t *);
 512 void            xfs_iext_realloc(xfs_inode_t *, int, int);
 513 void            xfs_iroot_realloc(xfs_inode_t *, int, int);
 514 void            xfs_ipin(xfs_inode_t *);
 515 void            xfs_iunpin(xfs_inode_t *);
 516 int             xfs_iextents_copy(xfs_inode_t *, xfs_bmbt_rec_t *, int);
 517 int             xfs_iflush(xfs_inode_t *, uint);
 518 void            xfs_iflush_all(struct xfs_mount *);
 519 int             xfs_iaccess(xfs_inode_t *, mode_t, cred_t *);
 520 uint            xfs_iroundup(uint);
 521 void            xfs_ichgtime(xfs_inode_t *, int);
 522 xfs_fsize_t     xfs_file_last_byte(xfs_inode_t *);
 523 void            xfs_lock_inodes(xfs_inode_t **, int, int, uint);
 524
 525 #define xfs_ipincount(ip)       ((unsigned int) atomic_read(&ip->i_pincount))
 526
 527 #ifdef DEBUG
 528 void            xfs_isize_check(struct xfs_mount *, xfs_inode_t *, xfs_fsize_t);
 529 #else   /* DEBUG */
 530 #define xfs_isize_check(mp, ip, isize)
 531 #endif  /* DEBUG */
 532
 533 #if defined(DEBUG)
 534 void            xfs_inobp_check(struct xfs_mount *, struct xfs_buf *);
 535 #else
 536 #define xfs_inobp_check(mp, bp)
 537 #endif /* DEBUG */
 538
 539 extern struct kmem_zone *xfs_chashlist_zone;
 540 extern struct kmem_zone *xfs_ifork_zone;
 541 extern struct kmem_zone *xfs_inode_zone;
 542 extern struct kmem_zone *xfs_ili_zone;
 543 extern struct vnodeops  xfs_vnodeops;
 544
 545 #endif  /* __KERNEL__ */
 546
 547 #endif  /* __XFS_INODE_H__ */