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linux_dsm_epyc7002/fs/xfs/xfs_inode.h
Dave Chinner 6e857567db xfs: don't truncate prealloc from frequently accessed inodes 
A long standing problem for streaming writeѕ through the NFS server
has been that the NFS server opens and closes file descriptors on an
inode for every write. The result of this behaviour is that the
->release() function is called on every close and that results in
XFS truncating speculative preallocation beyond the EOF.  This has
an adverse effect on file layout when multiple files are being
written at the same time - they interleave their extents and can
result in severe fragmentation.

To avoid this problem, keep track of ->release calls made on a dirty
inode. For most cases, an inode is only going to be opened once for
writing and then closed again during it's lifetime in cache. Hence
if there are multiple ->release calls when the inode is dirty, there
is a good chance that the inode is being accessed by the NFS server.
Hence set a flag the first time ->release is called while there are
delalloc blocks still outstanding on the inode.

If this flag is set when ->release is next called, then do no
truncate away the speculative preallocation - leave it there so that
subsequent writes do not need to reallocate the delalloc space. This
will prevent interleaving of extents of different inodes written
concurrently to the same AG.

If we get this wrong, it is not a big deal as we truncate
speculative allocation beyond EOF anyway in xfs_inactive() when the
inode is thrown out of the cache.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
2010-12-23 12:02:31 +11:00

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/*
* Copyright (c) 2000-2003,2005 Silicon Graphics, Inc.
* All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef __XFS_INODE_H__
#define __XFS_INODE_H__
struct posix_acl;
struct xfs_dinode;
struct xfs_inode;
/*
* Fork identifiers.
*/
#define XFS_DATA_FORK 0
#define XFS_ATTR_FORK 1
/*
* The following xfs_ext_irec_t struct introduces a second (top) level
* to the in-core extent allocation scheme. These structs are allocated
* in a contiguous block, creating an indirection array where each entry
* (irec) contains a pointer to a buffer of in-core extent records which
* it manages. Each extent buffer is 4k in size, since 4k is the system
* page size on Linux i386 and systems with larger page sizes don't seem
* to gain much, if anything, by using their native page size as the
* extent buffer size. Also, using 4k extent buffers everywhere provides
* a consistent interface for CXFS across different platforms.
*
* There is currently no limit on the number of irec's (extent lists)
* allowed, so heavily fragmented files may require an indirection array
* which spans multiple system pages of memory. The number of extents
* which would require this amount of contiguous memory is very large
* and should not cause problems in the foreseeable future. However,
* if the memory needed for the contiguous array ever becomes a problem,
* it is possible that a third level of indirection may be required.
*/
typedef struct xfs_ext_irec {
xfs_bmbt_rec_host_t *er_extbuf; /* block of extent records */
xfs_extnum_t er_extoff; /* extent offset in file */
xfs_extnum_t er_extcount; /* number of extents in page/block */
} xfs_ext_irec_t;
/*
* File incore extent information, present for each of data & attr forks.
*/
#define XFS_IEXT_BUFSZ 4096
#define XFS_LINEAR_EXTS (XFS_IEXT_BUFSZ / (uint)sizeof(xfs_bmbt_rec_t))
#define XFS_INLINE_EXTS 2
#define XFS_INLINE_DATA 32
typedef struct xfs_ifork {
int if_bytes; /* bytes in if_u1 */
int if_real_bytes; /* bytes allocated in if_u1 */
struct xfs_btree_block *if_broot; /* file's incore btree root */
short if_broot_bytes; /* bytes allocated for root */
unsigned char if_flags; /* per-fork flags */
unsigned char if_ext_max; /* max # of extent records */
xfs_extnum_t if_lastex; /* last if_extents used */
union {
xfs_bmbt_rec_host_t *if_extents;/* linear map file exts */
xfs_ext_irec_t *if_ext_irec; /* irec map file exts */
char *if_data; /* inline file data */
} if_u1;
union {
xfs_bmbt_rec_host_t if_inline_ext[XFS_INLINE_EXTS];
/* very small file extents */
char if_inline_data[XFS_INLINE_DATA];
/* very small file data */
xfs_dev_t if_rdev; /* dev number if special */
uuid_t if_uuid; /* mount point value */
} if_u2;
} xfs_ifork_t;
/*
* Inode location information. Stored in the inode and passed to
* xfs_imap_to_bp() to get a buffer and dinode for a given inode.
*/
struct xfs_imap {
xfs_daddr_t im_blkno; /* starting BB of inode chunk */
ushort im_len; /* length in BBs of inode chunk */
ushort im_boffset; /* inode offset in block in bytes */
};
/*
* This is the xfs in-core inode structure.
* Most of the on-disk inode is embedded in the i_d field.
*
* The extent pointers/inline file space, however, are managed
* separately. The memory for this information is pointed to by
* the if_u1 unions depending on the type of the data.
* This is used to linearize the array of extents for fast in-core
* access. This is used until the file's number of extents
* surpasses XFS_MAX_INCORE_EXTENTS, at which point all extent pointers
* are accessed through the buffer cache.
*
* Other state kept in the in-core inode is used for identification,
* locking, transactional updating, etc of the inode.
*
* Generally, we do not want to hold the i_rlock while holding the
* i_ilock. Hierarchy is i_iolock followed by i_rlock.
*
* xfs_iptr_t contains all the inode fields upto and including the
* i_mnext and i_mprev fields, it is used as a marker in the inode
* chain off the mount structure by xfs_sync calls.
*/
typedef struct xfs_ictimestamp {
__int32_t t_sec; /* timestamp seconds */
__int32_t t_nsec; /* timestamp nanoseconds */
} xfs_ictimestamp_t;
/*
* NOTE: This structure must be kept identical to struct xfs_dinode
* in xfs_dinode.h except for the endianness annotations.
*/
typedef struct xfs_icdinode {
__uint16_t di_magic; /* inode magic # = XFS_DINODE_MAGIC */
__uint16_t di_mode; /* mode and type of file */
__int8_t di_version; /* inode version */
__int8_t di_format; /* format of di_c data */
__uint16_t di_onlink; /* old number of links to file */
__uint32_t di_uid; /* owner's user id */
__uint32_t di_gid; /* owner's group id */
__uint32_t di_nlink; /* number of links to file */
__uint16_t di_projid_lo; /* lower part of owner's project id */
__uint16_t di_projid_hi; /* higher part of owner's project id */
__uint8_t di_pad[6]; /* unused, zeroed space */
__uint16_t di_flushiter; /* incremented on flush */
xfs_ictimestamp_t di_atime; /* time last accessed */
xfs_ictimestamp_t di_mtime; /* time last modified */
xfs_ictimestamp_t di_ctime; /* time created/inode modified */
xfs_fsize_t di_size; /* number of bytes in file */
xfs_drfsbno_t di_nblocks; /* # of direct & btree blocks used */
xfs_extlen_t di_extsize; /* basic/minimum extent size for file */
xfs_extnum_t di_nextents; /* number of extents in data fork */
xfs_aextnum_t di_anextents; /* number of extents in attribute fork*/
__uint8_t di_forkoff; /* attr fork offs, <<3 for 64b align */
__int8_t di_aformat; /* format of attr fork's data */
__uint32_t di_dmevmask; /* DMIG event mask */
__uint16_t di_dmstate; /* DMIG state info */
__uint16_t di_flags; /* random flags, XFS_DIFLAG_... */
__uint32_t di_gen; /* generation number */
} xfs_icdinode_t;
/*
* Flags for xfs_ichgtime().
*/
#define XFS_ICHGTIME_MOD 0x1 /* data fork modification timestamp */
#define XFS_ICHGTIME_CHG 0x2 /* inode field change timestamp */
/*
* Per-fork incore inode flags.
*/
#define XFS_IFINLINE 0x01 /* Inline data is read in */
#define XFS_IFEXTENTS 0x02 /* All extent pointers are read in */
#define XFS_IFBROOT 0x04 /* i_broot points to the bmap b-tree root */
#define XFS_IFEXTIREC 0x08 /* Indirection array of extent blocks */
/*
* Fork handling.
*/
#define XFS_IFORK_Q(ip) ((ip)->i_d.di_forkoff != 0)
#define XFS_IFORK_BOFF(ip) ((int)((ip)->i_d.di_forkoff << 3))
#define XFS_IFORK_PTR(ip,w) \
((w) == XFS_DATA_FORK ? \
&(ip)->i_df : \
(ip)->i_afp)
#define XFS_IFORK_DSIZE(ip) \
(XFS_IFORK_Q(ip) ? \
XFS_IFORK_BOFF(ip) : \
XFS_LITINO((ip)->i_mount))
#define XFS_IFORK_ASIZE(ip) \
(XFS_IFORK_Q(ip) ? \
XFS_LITINO((ip)->i_mount) - XFS_IFORK_BOFF(ip) : \
0)
#define XFS_IFORK_SIZE(ip,w) \
((w) == XFS_DATA_FORK ? \
XFS_IFORK_DSIZE(ip) : \
XFS_IFORK_ASIZE(ip))
#define XFS_IFORK_FORMAT(ip,w) \
((w) == XFS_DATA_FORK ? \
(ip)->i_d.di_format : \
(ip)->i_d.di_aformat)
#define XFS_IFORK_FMT_SET(ip,w,n) \
((w) == XFS_DATA_FORK ? \
((ip)->i_d.di_format = (n)) : \
((ip)->i_d.di_aformat = (n)))
#define XFS_IFORK_NEXTENTS(ip,w) \
((w) == XFS_DATA_FORK ? \
(ip)->i_d.di_nextents : \
(ip)->i_d.di_anextents)
#define XFS_IFORK_NEXT_SET(ip,w,n) \
((w) == XFS_DATA_FORK ? \
((ip)->i_d.di_nextents = (n)) : \
((ip)->i_d.di_anextents = (n)))
#ifdef __KERNEL__
struct bhv_desc;
struct xfs_buf;
struct xfs_bmap_free;
struct xfs_bmbt_irec;
struct xfs_inode_log_item;
struct xfs_mount;
struct xfs_trans;
struct xfs_dquot;
typedef struct dm_attrs_s {
__uint32_t da_dmevmask; /* DMIG event mask */
__uint16_t da_dmstate; /* DMIG state info */
__uint16_t da_pad; /* DMIG extra padding */
} dm_attrs_t;
typedef struct xfs_inode {
/* Inode linking and identification information. */
struct xfs_mount *i_mount; /* fs mount struct ptr */
struct xfs_dquot *i_udquot; /* user dquot */
struct xfs_dquot *i_gdquot; /* group dquot */
/* Inode location stuff */
xfs_ino_t i_ino; /* inode number (agno/agino)*/
struct xfs_imap i_imap; /* location for xfs_imap() */
/* Extent information. */
xfs_ifork_t *i_afp; /* attribute fork pointer */
xfs_ifork_t i_df; /* data fork */
/* Transaction and locking information. */
struct xfs_trans *i_transp; /* ptr to owning transaction*/
struct xfs_inode_log_item *i_itemp; /* logging information */
mrlock_t i_lock; /* inode lock */
mrlock_t i_iolock; /* inode IO lock */
struct completion i_flush; /* inode flush completion q */
atomic_t i_pincount; /* inode pin count */
wait_queue_head_t i_ipin_wait; /* inode pinning wait queue */
spinlock_t i_flags_lock; /* inode i_flags lock */
/* Miscellaneous state. */
unsigned short i_flags; /* see defined flags below */
unsigned char i_update_core; /* timestamps/size is dirty */
unsigned int i_delayed_blks; /* count of delay alloc blks */
xfs_icdinode_t i_d; /* most of ondisk inode */
xfs_fsize_t i_size; /* in-memory size */
xfs_fsize_t i_new_size; /* size when write completes */
atomic_t i_iocount; /* outstanding I/O count */
/* VFS inode */
struct inode i_vnode; /* embedded VFS inode */
} xfs_inode_t;
#define XFS_ISIZE(ip) (((ip)->i_d.di_mode & S_IFMT) == S_IFREG) ? \
(ip)->i_size : (ip)->i_d.di_size;
/* Convert from vfs inode to xfs inode */
static inline struct xfs_inode *XFS_I(struct inode *inode)
{
return container_of(inode, struct xfs_inode, i_vnode);
}
/* convert from xfs inode to vfs inode */
static inline struct inode *VFS_I(struct xfs_inode *ip)
{
return &ip->i_vnode;
}
/*
* i_flags helper functions
*/
static inline void
__xfs_iflags_set(xfs_inode_t *ip, unsigned short flags)
{
ip->i_flags |= flags;
}
static inline void
xfs_iflags_set(xfs_inode_t *ip, unsigned short flags)
{
spin_lock(&ip->i_flags_lock);
__xfs_iflags_set(ip, flags);
spin_unlock(&ip->i_flags_lock);
}
static inline void
xfs_iflags_clear(xfs_inode_t *ip, unsigned short flags)
{
spin_lock(&ip->i_flags_lock);
ip->i_flags &= ~flags;
spin_unlock(&ip->i_flags_lock);
}
static inline int
__xfs_iflags_test(xfs_inode_t *ip, unsigned short flags)
{
return (ip->i_flags & flags);
}
static inline int
xfs_iflags_test(xfs_inode_t *ip, unsigned short flags)
{
int ret;
spin_lock(&ip->i_flags_lock);
ret = __xfs_iflags_test(ip, flags);
spin_unlock(&ip->i_flags_lock);
return ret;
}
static inline int
xfs_iflags_test_and_clear(xfs_inode_t *ip, unsigned short flags)
{
int ret;
spin_lock(&ip->i_flags_lock);
ret = ip->i_flags & flags;
if (ret)
ip->i_flags &= ~flags;
spin_unlock(&ip->i_flags_lock);
return ret;
}
/*
* Project quota id helpers (previously projid was 16bit only
* and using two 16bit values to hold new 32bit projid was choosen
* to retain compatibility with "old" filesystems).
*/
static inline prid_t
xfs_get_projid(struct xfs_inode *ip)
{
return (prid_t)ip->i_d.di_projid_hi << 16 | ip->i_d.di_projid_lo;
}
static inline void
xfs_set_projid(struct xfs_inode *ip,
prid_t projid)
{
ip->i_d.di_projid_hi = (__uint16_t) (projid >> 16);
ip->i_d.di_projid_lo = (__uint16_t) (projid & 0xffff);
}
/*
* Manage the i_flush queue embedded in the inode. This completion
* queue synchronizes processes attempting to flush the in-core
* inode back to disk.
*/
static inline void xfs_iflock(xfs_inode_t *ip)
{
wait_for_completion(&ip->i_flush);
}
static inline int xfs_iflock_nowait(xfs_inode_t *ip)
{
return try_wait_for_completion(&ip->i_flush);
}
static inline void xfs_ifunlock(xfs_inode_t *ip)
{
complete(&ip->i_flush);
}
/*
* In-core inode flags.
*/
#define XFS_IRECLAIM 0x0001 /* started reclaiming this inode */
#define XFS_ISTALE 0x0002 /* inode has been staled */
#define XFS_IRECLAIMABLE 0x0004 /* inode can be reclaimed */
#define XFS_INEW 0x0008 /* inode has just been allocated */
#define XFS_IFILESTREAM 0x0010 /* inode is in a filestream directory */
#define XFS_ITRUNCATED 0x0020 /* truncated down so flush-on-close */
#define XFS_IDIRTY_RELEASE 0x0040 /* dirty release already seen */
/*
* Flags for inode locking.
* Bit ranges: 1<<1 - 1<<16-1 -- iolock/ilock modes (bitfield)
* 1<<16 - 1<<32-1 -- lockdep annotation (integers)
*/
#define XFS_IOLOCK_EXCL (1<<0)
#define XFS_IOLOCK_SHARED (1<<1)
#define XFS_ILOCK_EXCL (1<<2)
#define XFS_ILOCK_SHARED (1<<3)
#define XFS_IUNLOCK_NONOTIFY (1<<4)
#define XFS_LOCK_MASK (XFS_IOLOCK_EXCL | XFS_IOLOCK_SHARED \
| XFS_ILOCK_EXCL | XFS_ILOCK_SHARED)
#define XFS_LOCK_FLAGS \
{ XFS_IOLOCK_EXCL, "IOLOCK_EXCL" }, \
{ XFS_IOLOCK_SHARED, "IOLOCK_SHARED" }, \
{ XFS_ILOCK_EXCL, "ILOCK_EXCL" }, \
{ XFS_ILOCK_SHARED, "ILOCK_SHARED" }, \
{ XFS_IUNLOCK_NONOTIFY, "IUNLOCK_NONOTIFY" }
/*
* Flags for lockdep annotations.
*
* XFS_I[O]LOCK_PARENT - for operations that require locking two inodes
* (ie directory operations that require locking a directory inode and
* an entry inode). The first inode gets locked with this flag so it
* gets a lockdep subclass of 1 and the second lock will have a lockdep
* subclass of 0.
*
* XFS_LOCK_INUMORDER - for locking several inodes at the some time
* with xfs_lock_inodes(). This flag is used as the starting subclass
* and each subsequent lock acquired will increment the subclass by one.
* So the first lock acquired will have a lockdep subclass of 2, the
* second lock will have a lockdep subclass of 3, and so on. It is
* the responsibility of the class builder to shift this to the correct
* portion of the lock_mode lockdep mask.
*/
#define XFS_LOCK_PARENT 1
#define XFS_LOCK_INUMORDER 2
#define XFS_IOLOCK_SHIFT 16
#define XFS_IOLOCK_PARENT (XFS_LOCK_PARENT << XFS_IOLOCK_SHIFT)
#define XFS_ILOCK_SHIFT 24
#define XFS_ILOCK_PARENT (XFS_LOCK_PARENT << XFS_ILOCK_SHIFT)
#define XFS_IOLOCK_DEP_MASK 0x00ff0000
#define XFS_ILOCK_DEP_MASK 0xff000000
#define XFS_LOCK_DEP_MASK (XFS_IOLOCK_DEP_MASK | XFS_ILOCK_DEP_MASK)
#define XFS_IOLOCK_DEP(flags) (((flags) & XFS_IOLOCK_DEP_MASK) >> XFS_IOLOCK_SHIFT)
#define XFS_ILOCK_DEP(flags) (((flags) & XFS_ILOCK_DEP_MASK) >> XFS_ILOCK_SHIFT)
extern struct lock_class_key xfs_iolock_reclaimable;
/*
* Flags for xfs_itruncate_start().
*/
#define XFS_ITRUNC_DEFINITE 0x1
#define XFS_ITRUNC_MAYBE 0x2
#define XFS_ITRUNC_FLAGS \
{ XFS_ITRUNC_DEFINITE, "DEFINITE" }, \
{ XFS_ITRUNC_MAYBE, "MAYBE" }
/*
* For multiple groups support: if S_ISGID bit is set in the parent
* directory, group of new file is set to that of the parent, and
* new subdirectory gets S_ISGID bit from parent.
*/
#define XFS_INHERIT_GID(pip) \
(((pip)->i_mount->m_flags & XFS_MOUNT_GRPID) || \
((pip)->i_d.di_mode & S_ISGID))
/*
* xfs_iget.c prototypes.
*/
int xfs_iget(struct xfs_mount *, struct xfs_trans *, xfs_ino_t,
uint, uint, xfs_inode_t **);
void xfs_ilock(xfs_inode_t *, uint);
int xfs_ilock_nowait(xfs_inode_t *, uint);
void xfs_iunlock(xfs_inode_t *, uint);
void xfs_ilock_demote(xfs_inode_t *, uint);
int xfs_isilocked(xfs_inode_t *, uint);
uint xfs_ilock_map_shared(xfs_inode_t *);
void xfs_iunlock_map_shared(xfs_inode_t *, uint);
void xfs_inode_free(struct xfs_inode *ip);
/*
* xfs_inode.c prototypes.
*/
int xfs_ialloc(struct xfs_trans *, xfs_inode_t *, mode_t,
xfs_nlink_t, xfs_dev_t, prid_t, int,
struct xfs_buf **, boolean_t *, xfs_inode_t **);
uint xfs_ip2xflags(struct xfs_inode *);
uint xfs_dic2xflags(struct xfs_dinode *);
int xfs_ifree(struct xfs_trans *, xfs_inode_t *,
struct xfs_bmap_free *);
int xfs_itruncate_start(xfs_inode_t *, uint, xfs_fsize_t);
int xfs_itruncate_finish(struct xfs_trans **, xfs_inode_t *,
xfs_fsize_t, int, int);
int xfs_iunlink(struct xfs_trans *, xfs_inode_t *);
void xfs_iext_realloc(xfs_inode_t *, int, int);
void xfs_iunpin_wait(xfs_inode_t *);
int xfs_iflush(xfs_inode_t *, uint);
void xfs_lock_inodes(xfs_inode_t **, int, uint);
void xfs_lock_two_inodes(xfs_inode_t *, xfs_inode_t *, uint);
void xfs_synchronize_times(xfs_inode_t *);
void xfs_mark_inode_dirty(xfs_inode_t *);
void xfs_mark_inode_dirty_sync(xfs_inode_t *);
#define IHOLD(ip) \
do { \
ASSERT(atomic_read(&VFS_I(ip)->i_count) > 0) ; \
ihold(VFS_I(ip)); \
trace_xfs_ihold(ip, _THIS_IP_); \
} while (0)
#define IRELE(ip) \
do { \
trace_xfs_irele(ip, _THIS_IP_); \
iput(VFS_I(ip)); \
} while (0)
#endif /* __KERNEL__ */
/*
* Flags for xfs_iget()
*/
#define XFS_IGET_CREATE 0x1
#define XFS_IGET_UNTRUSTED 0x2
int xfs_inotobp(struct xfs_mount *, struct xfs_trans *,
xfs_ino_t, struct xfs_dinode **,
struct xfs_buf **, int *, uint);
int xfs_itobp(struct xfs_mount *, struct xfs_trans *,
struct xfs_inode *, struct xfs_dinode **,
struct xfs_buf **, uint);
int xfs_iread(struct xfs_mount *, struct xfs_trans *,
struct xfs_inode *, uint);
void xfs_dinode_to_disk(struct xfs_dinode *,
struct xfs_icdinode *);
void xfs_idestroy_fork(struct xfs_inode *, int);
void xfs_idata_realloc(struct xfs_inode *, int, int);
void xfs_iroot_realloc(struct xfs_inode *, int, int);
int xfs_iread_extents(struct xfs_trans *, struct xfs_inode *, int);
int xfs_iextents_copy(struct xfs_inode *, xfs_bmbt_rec_t *, int);
xfs_bmbt_rec_host_t *xfs_iext_get_ext(xfs_ifork_t *, xfs_extnum_t);
void xfs_iext_insert(xfs_inode_t *, xfs_extnum_t, xfs_extnum_t,
xfs_bmbt_irec_t *, int);
void xfs_iext_add(xfs_ifork_t *, xfs_extnum_t, int);
void xfs_iext_add_indirect_multi(xfs_ifork_t *, int, xfs_extnum_t, int);
void xfs_iext_remove(xfs_inode_t *, xfs_extnum_t, int, int);
void xfs_iext_remove_inline(xfs_ifork_t *, xfs_extnum_t, int);
void xfs_iext_remove_direct(xfs_ifork_t *, xfs_extnum_t, int);
void xfs_iext_remove_indirect(xfs_ifork_t *, xfs_extnum_t, int);
void xfs_iext_realloc_direct(xfs_ifork_t *, int);
void xfs_iext_direct_to_inline(xfs_ifork_t *, xfs_extnum_t);
void xfs_iext_inline_to_direct(xfs_ifork_t *, int);
void xfs_iext_destroy(xfs_ifork_t *);
xfs_bmbt_rec_host_t *xfs_iext_bno_to_ext(xfs_ifork_t *, xfs_fileoff_t, int *);
xfs_ext_irec_t *xfs_iext_bno_to_irec(xfs_ifork_t *, xfs_fileoff_t, int *);
xfs_ext_irec_t *xfs_iext_idx_to_irec(xfs_ifork_t *, xfs_extnum_t *, int *, int);
void xfs_iext_irec_init(xfs_ifork_t *);
xfs_ext_irec_t *xfs_iext_irec_new(xfs_ifork_t *, int);
void xfs_iext_irec_remove(xfs_ifork_t *, int);
void xfs_iext_irec_compact(xfs_ifork_t *);
void xfs_iext_irec_compact_pages(xfs_ifork_t *);
void xfs_iext_irec_compact_full(xfs_ifork_t *);
void xfs_iext_irec_update_extoffs(xfs_ifork_t *, int, int);
#define xfs_ipincount(ip) ((unsigned int) atomic_read(&ip->i_pincount))
#ifdef DEBUG
void xfs_isize_check(struct xfs_mount *, struct xfs_inode *,
xfs_fsize_t);
#else /* DEBUG */
#define xfs_isize_check(mp, ip, isize)
#endif /* DEBUG */
#if defined(DEBUG)
void xfs_inobp_check(struct xfs_mount *, struct xfs_buf *);
#else
#define xfs_inobp_check(mp, bp)
#endif /* DEBUG */
extern struct kmem_zone *xfs_ifork_zone;
extern struct kmem_zone *xfs_inode_zone;
extern struct kmem_zone *xfs_ili_zone;
#endif /* __XFS_INODE_H__ */
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