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Re: [PATCH 07/49] xfs: split out on-disk transaction definitions

To: Dave Chinner <david@xxxxxxxxxxxxx>
Subject: Re: [PATCH 07/49] xfs: split out on-disk transaction definitions
From: Brian Foster <bfoster@xxxxxxxxxx>
Date: Wed, 24 Jul 2013 08:09:50 -0400
Cc: xfs@xxxxxxxxxxx
Delivered-to: xfs@xxxxxxxxxxx
In-reply-to: <1374215120-7271-8-git-send-email-david@xxxxxxxxxxxxx>
References: <1374215120-7271-1-git-send-email-david@xxxxxxxxxxxxx> <1374215120-7271-8-git-send-email-david@xxxxxxxxxxxxx>
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130625 Thunderbird/17.0.7
On 07/19/2013 02:24 AM, Dave Chinner wrote:
> From: Dave Chinner <dchinner@xxxxxxxxxx>
> 
> There's a bunch of definitions in xfs_trans.h that define on-disk
> formats - transaction headers taht get written into the log, log
> item type definitions, etc. Split out everything into a separate
> file so that all which remains in xfs_trans.h are kernel only
> definitions.
> 
> Also, remove the duplicate magic number definitions for
> XFS_TRANS_HEADER_MAGIC...
> 
> Signed-off-by: Dave Chinner <dchinner@xxxxxxxxxx>
> ---

Removed XFS_TRANS_MAGIC, added missing XFS_LI_ICREATE description
string, otherwise code shuffling:

Reviewed-by: Brian Foster <bfoster@xxxxxxxxxx>

>  fs/xfs/xfs_log_format.h | 206 
> ++++++++++++++++++++++++++++++++++++++++++++++++
>  fs/xfs/xfs_trans.c      |   4 +-
>  fs/xfs/xfs_trans.h      | 205 -----------------------------------------------
>  3 files changed, 208 insertions(+), 207 deletions(-)
> 
> diff --git a/fs/xfs/xfs_log_format.h b/fs/xfs/xfs_log_format.h
> index 02639c7..faf3f43 100644
> --- a/fs/xfs/xfs_log_format.h
> +++ b/fs/xfs/xfs_log_format.h
> @@ -187,6 +187,212 @@ typedef struct xfs_log_iovec {
>  
>  
>  /*
> + * Transaction Header definitions.
> + *
> + * This is the structure written in the log at the head of every 
> transaction. It
> + * identifies the type and id of the transaction, and contains the number of
> + * items logged by the transaction so we know how many to expect during
> + * recovery.
> + *
> + * Do not change the below structure without redoing the code in
> + * xlog_recover_add_to_trans() and xlog_recover_add_to_cont_trans().
> + */
> +typedef struct xfs_trans_header {
> +     uint            th_magic;               /* magic number */
> +     uint            th_type;                /* transaction type */
> +     __int32_t       th_tid;                 /* transaction id (unused) */
> +     uint            th_num_items;           /* num items logged by trans */
> +} xfs_trans_header_t;
> +
> +#define      XFS_TRANS_HEADER_MAGIC  0x5452414e      /* TRAN */
> +
> +/*
> + * Log item types.
> + */
> +#define      XFS_LI_EFI              0x1236
> +#define      XFS_LI_EFD              0x1237
> +#define      XFS_LI_IUNLINK          0x1238
> +#define      XFS_LI_INODE            0x123b  /* aligned ino chunks, var-size 
> ibufs */
> +#define      XFS_LI_BUF              0x123c  /* v2 bufs, variable sized 
> inode bufs */
> +#define      XFS_LI_DQUOT            0x123d
> +#define      XFS_LI_QUOTAOFF         0x123e
> +#define      XFS_LI_ICREATE          0x123f
> +
> +#define XFS_LI_TYPE_DESC \
> +     { XFS_LI_EFI,           "XFS_LI_EFI" }, \
> +     { XFS_LI_EFD,           "XFS_LI_EFD" }, \
> +     { XFS_LI_IUNLINK,       "XFS_LI_IUNLINK" }, \
> +     { XFS_LI_INODE,         "XFS_LI_INODE" }, \
> +     { XFS_LI_BUF,           "XFS_LI_BUF" }, \
> +     { XFS_LI_DQUOT,         "XFS_LI_DQUOT" }, \
> +     { XFS_LI_QUOTAOFF,      "XFS_LI_QUOTAOFF" }, \
> +     { XFS_LI_ICREATE,       "XFS_LI_ICREATE" }
> +
> +/*
> + * Transaction types.  Used to distinguish types of buffers.
> + */
> +#define XFS_TRANS_SETATTR_NOT_SIZE   1
> +#define XFS_TRANS_SETATTR_SIZE               2
> +#define XFS_TRANS_INACTIVE           3
> +#define XFS_TRANS_CREATE             4
> +#define XFS_TRANS_CREATE_TRUNC               5
> +#define XFS_TRANS_TRUNCATE_FILE              6
> +#define XFS_TRANS_REMOVE             7
> +#define XFS_TRANS_LINK                       8
> +#define XFS_TRANS_RENAME             9
> +#define XFS_TRANS_MKDIR                      10
> +#define XFS_TRANS_RMDIR                      11
> +#define XFS_TRANS_SYMLINK            12
> +#define XFS_TRANS_SET_DMATTRS                13
> +#define XFS_TRANS_GROWFS             14
> +#define XFS_TRANS_STRAT_WRITE                15
> +#define XFS_TRANS_DIOSTRAT           16
> +/* 17 was XFS_TRANS_WRITE_SYNC */
> +#define      XFS_TRANS_WRITEID               18
> +#define      XFS_TRANS_ADDAFORK              19
> +#define      XFS_TRANS_ATTRINVAL             20
> +#define      XFS_TRANS_ATRUNCATE             21
> +#define      XFS_TRANS_ATTR_SET              22
> +#define      XFS_TRANS_ATTR_RM               23
> +#define      XFS_TRANS_ATTR_FLAG             24
> +#define      XFS_TRANS_CLEAR_AGI_BUCKET      25
> +#define XFS_TRANS_QM_SBCHANGE                26
> +/*
> + * Dummy entries since we use the transaction type to index into the
> + * trans_type[] in xlog_recover_print_trans_head()
> + */
> +#define XFS_TRANS_DUMMY1             27
> +#define XFS_TRANS_DUMMY2             28
> +#define XFS_TRANS_QM_QUOTAOFF                29
> +#define XFS_TRANS_QM_DQALLOC         30
> +#define XFS_TRANS_QM_SETQLIM         31
> +#define XFS_TRANS_QM_DQCLUSTER               32
> +#define XFS_TRANS_QM_QINOCREATE              33
> +#define XFS_TRANS_QM_QUOTAOFF_END    34
> +#define XFS_TRANS_SB_UNIT            35
> +#define XFS_TRANS_FSYNC_TS           36
> +#define      XFS_TRANS_GROWFSRT_ALLOC        37
> +#define      XFS_TRANS_GROWFSRT_ZERO         38
> +#define      XFS_TRANS_GROWFSRT_FREE         39
> +#define      XFS_TRANS_SWAPEXT               40
> +#define      XFS_TRANS_SB_COUNT              41
> +#define      XFS_TRANS_CHECKPOINT            42
> +#define      XFS_TRANS_ICREATE               43
> +#define      XFS_TRANS_TYPE_MAX              43
> +/* new transaction types need to be reflected in xfs_logprint(8) */
> +
> +#define XFS_TRANS_TYPES \
> +     { XFS_TRANS_SETATTR_NOT_SIZE,   "SETATTR_NOT_SIZE" }, \
> +     { XFS_TRANS_SETATTR_SIZE,       "SETATTR_SIZE" }, \
> +     { XFS_TRANS_INACTIVE,           "INACTIVE" }, \
> +     { XFS_TRANS_CREATE,             "CREATE" }, \
> +     { XFS_TRANS_CREATE_TRUNC,       "CREATE_TRUNC" }, \
> +     { XFS_TRANS_TRUNCATE_FILE,      "TRUNCATE_FILE" }, \
> +     { XFS_TRANS_REMOVE,             "REMOVE" }, \
> +     { XFS_TRANS_LINK,               "LINK" }, \
> +     { XFS_TRANS_RENAME,             "RENAME" }, \
> +     { XFS_TRANS_MKDIR,              "MKDIR" }, \
> +     { XFS_TRANS_RMDIR,              "RMDIR" }, \
> +     { XFS_TRANS_SYMLINK,            "SYMLINK" }, \
> +     { XFS_TRANS_SET_DMATTRS,        "SET_DMATTRS" }, \
> +     { XFS_TRANS_GROWFS,             "GROWFS" }, \
> +     { XFS_TRANS_STRAT_WRITE,        "STRAT_WRITE" }, \
> +     { XFS_TRANS_DIOSTRAT,           "DIOSTRAT" }, \
> +     { XFS_TRANS_WRITEID,            "WRITEID" }, \
> +     { XFS_TRANS_ADDAFORK,           "ADDAFORK" }, \
> +     { XFS_TRANS_ATTRINVAL,          "ATTRINVAL" }, \
> +     { XFS_TRANS_ATRUNCATE,          "ATRUNCATE" }, \
> +     { XFS_TRANS_ATTR_SET,           "ATTR_SET" }, \
> +     { XFS_TRANS_ATTR_RM,            "ATTR_RM" }, \
> +     { XFS_TRANS_ATTR_FLAG,          "ATTR_FLAG" }, \
> +     { XFS_TRANS_CLEAR_AGI_BUCKET,   "CLEAR_AGI_BUCKET" }, \
> +     { XFS_TRANS_QM_SBCHANGE,        "QM_SBCHANGE" }, \
> +     { XFS_TRANS_QM_QUOTAOFF,        "QM_QUOTAOFF" }, \
> +     { XFS_TRANS_QM_DQALLOC,         "QM_DQALLOC" }, \
> +     { XFS_TRANS_QM_SETQLIM,         "QM_SETQLIM" }, \
> +     { XFS_TRANS_QM_DQCLUSTER,       "QM_DQCLUSTER" }, \
> +     { XFS_TRANS_QM_QINOCREATE,      "QM_QINOCREATE" }, \
> +     { XFS_TRANS_QM_QUOTAOFF_END,    "QM_QOFF_END" }, \
> +     { XFS_TRANS_SB_UNIT,            "SB_UNIT" }, \
> +     { XFS_TRANS_FSYNC_TS,           "FSYNC_TS" }, \
> +     { XFS_TRANS_GROWFSRT_ALLOC,     "GROWFSRT_ALLOC" }, \
> +     { XFS_TRANS_GROWFSRT_ZERO,      "GROWFSRT_ZERO" }, \
> +     { XFS_TRANS_GROWFSRT_FREE,      "GROWFSRT_FREE" }, \
> +     { XFS_TRANS_SWAPEXT,            "SWAPEXT" }, \
> +     { XFS_TRANS_SB_COUNT,           "SB_COUNT" }, \
> +     { XFS_TRANS_CHECKPOINT,         "CHECKPOINT" }, \
> +     { XFS_TRANS_DUMMY1,             "DUMMY1" }, \
> +     { XFS_TRANS_DUMMY2,             "DUMMY2" }, \
> +     { XLOG_UNMOUNT_REC_TYPE,        "UNMOUNT" }
> +
> +/*
> + * This structure is used to track log items associated with
> + * a transaction.  It points to the log item and keeps some
> + * flags to track the state of the log item.  It also tracks
> + * the amount of space needed to log the item it describes
> + * once we get to commit processing (see xfs_trans_commit()).
> + */
> +struct xfs_log_item_desc {
> +     struct xfs_log_item     *lid_item;
> +     struct list_head        lid_trans;
> +     unsigned char           lid_flags;
> +};
> +
> +#define XFS_LID_DIRTY                0x1
> +
> +/*
> + * Values for t_flags.
> + */
> +#define      XFS_TRANS_DIRTY         0x01    /* something needs to be logged 
> */
> +#define      XFS_TRANS_SB_DIRTY      0x02    /* superblock is modified */
> +#define      XFS_TRANS_PERM_LOG_RES  0x04    /* xact took a permanent log 
> res */
> +#define      XFS_TRANS_SYNC          0x08    /* make commit synchronous */
> +#define XFS_TRANS_DQ_DIRTY   0x10    /* at least one dquot in trx dirty */
> +#define XFS_TRANS_RESERVE    0x20    /* OK to use reserved data blocks */
> +#define XFS_TRANS_FREEZE_PROT        0x40    /* Transaction has elevated 
> writer
> +                                        count in superblock */
> +
> +/*
> + * Values for call flags parameter.
> + */
> +#define      XFS_TRANS_RELEASE_LOG_RES       0x4
> +#define      XFS_TRANS_ABORT                 0x8
> +
> +/*
> + * Field values for xfs_trans_mod_sb.
> + */
> +#define      XFS_TRANS_SB_ICOUNT             0x00000001
> +#define      XFS_TRANS_SB_IFREE              0x00000002
> +#define      XFS_TRANS_SB_FDBLOCKS           0x00000004
> +#define      XFS_TRANS_SB_RES_FDBLOCKS       0x00000008
> +#define      XFS_TRANS_SB_FREXTENTS          0x00000010
> +#define      XFS_TRANS_SB_RES_FREXTENTS      0x00000020
> +#define      XFS_TRANS_SB_DBLOCKS            0x00000040
> +#define      XFS_TRANS_SB_AGCOUNT            0x00000080
> +#define      XFS_TRANS_SB_IMAXPCT            0x00000100
> +#define      XFS_TRANS_SB_REXTSIZE           0x00000200
> +#define      XFS_TRANS_SB_RBMBLOCKS          0x00000400
> +#define      XFS_TRANS_SB_RBLOCKS            0x00000800
> +#define      XFS_TRANS_SB_REXTENTS           0x00001000
> +#define      XFS_TRANS_SB_REXTSLOG           0x00002000
> +
> +/*
> + * Here we centralize the specification of XFS meta-data buffer
> + * reference count values.  This determine how hard the buffer
> + * cache tries to hold onto the buffer.
> + */
> +#define      XFS_AGF_REF             4
> +#define      XFS_AGI_REF             4
> +#define      XFS_AGFL_REF            3
> +#define      XFS_INO_BTREE_REF       3
> +#define      XFS_ALLOC_BTREE_REF     2
> +#define      XFS_BMAP_BTREE_REF      2
> +#define      XFS_DIR_BTREE_REF       2
> +#define      XFS_INO_REF             2
> +#define      XFS_ATTR_BTREE_REF      1
> +#define      XFS_DQUOT_REF           1
> +
> +/*
>   * Inode Log Item Format definitions.
>   *
>   * This is the structure used to lay out an inode log item in the
> diff --git a/fs/xfs/xfs_trans.c b/fs/xfs/xfs_trans.c
> index 1d2a061..9b70df3 100644
> --- a/fs/xfs/xfs_trans.c
> +++ b/fs/xfs/xfs_trans.c
> @@ -744,7 +744,7 @@ _xfs_trans_alloc(
>       atomic_inc(&mp->m_active_trans);
>  
>       tp = kmem_zone_zalloc(xfs_trans_zone, memflags);
> -     tp->t_magic = XFS_TRANS_MAGIC;
> +     tp->t_magic = XFS_TRANS_HEADER_MAGIC;
>       tp->t_type = type;
>       tp->t_mountp = mp;
>       INIT_LIST_HEAD(&tp->t_items);
> @@ -789,7 +789,7 @@ xfs_trans_dup(
>       /*
>        * Initialize the new transaction structure.
>        */
> -     ntp->t_magic = XFS_TRANS_MAGIC;
> +     ntp->t_magic = XFS_TRANS_HEADER_MAGIC;
>       ntp->t_type = tp->t_type;
>       ntp->t_mountp = tp->t_mountp;
>       INIT_LIST_HEAD(&ntp->t_items);
> diff --git a/fs/xfs/xfs_trans.h b/fs/xfs/xfs_trans.h
> index 2b49463..ffaa584 100644
> --- a/fs/xfs/xfs_trans.h
> +++ b/fs/xfs/xfs_trans.h
> @@ -21,195 +21,6 @@
>  struct xfs_log_item;
>  
>  /*
> - * This is the structure written in the log at the head of
> - * every transaction. It identifies the type and id of the
> - * transaction, and contains the number of items logged by
> - * the transaction so we know how many to expect during recovery.
> - *
> - * Do not change the below structure without redoing the code in
> - * xlog_recover_add_to_trans() and xlog_recover_add_to_cont_trans().
> - */
> -typedef struct xfs_trans_header {
> -     uint            th_magic;               /* magic number */
> -     uint            th_type;                /* transaction type */
> -     __int32_t       th_tid;                 /* transaction id (unused) */
> -     uint            th_num_items;           /* num items logged by trans */
> -} xfs_trans_header_t;
> -
> -#define      XFS_TRANS_HEADER_MAGIC  0x5452414e      /* TRAN */
> -
> -/*
> - * Log item types.
> - */
> -#define      XFS_LI_EFI              0x1236
> -#define      XFS_LI_EFD              0x1237
> -#define      XFS_LI_IUNLINK          0x1238
> -#define      XFS_LI_INODE            0x123b  /* aligned ino chunks, var-size 
> ibufs */
> -#define      XFS_LI_BUF              0x123c  /* v2 bufs, variable sized 
> inode bufs */
> -#define      XFS_LI_DQUOT            0x123d
> -#define      XFS_LI_QUOTAOFF         0x123e
> -#define      XFS_LI_ICREATE          0x123f
> -
> -#define XFS_LI_TYPE_DESC \
> -     { XFS_LI_EFI,           "XFS_LI_EFI" }, \
> -     { XFS_LI_EFD,           "XFS_LI_EFD" }, \
> -     { XFS_LI_IUNLINK,       "XFS_LI_IUNLINK" }, \
> -     { XFS_LI_INODE,         "XFS_LI_INODE" }, \
> -     { XFS_LI_BUF,           "XFS_LI_BUF" }, \
> -     { XFS_LI_DQUOT,         "XFS_LI_DQUOT" }, \
> -     { XFS_LI_QUOTAOFF,      "XFS_LI_QUOTAOFF" }
> -
> -/*
> - * Transaction types.  Used to distinguish types of buffers.
> - */
> -#define XFS_TRANS_SETATTR_NOT_SIZE   1
> -#define XFS_TRANS_SETATTR_SIZE               2
> -#define XFS_TRANS_INACTIVE           3
> -#define XFS_TRANS_CREATE             4
> -#define XFS_TRANS_CREATE_TRUNC               5
> -#define XFS_TRANS_TRUNCATE_FILE              6
> -#define XFS_TRANS_REMOVE             7
> -#define XFS_TRANS_LINK                       8
> -#define XFS_TRANS_RENAME             9
> -#define XFS_TRANS_MKDIR                      10
> -#define XFS_TRANS_RMDIR                      11
> -#define XFS_TRANS_SYMLINK            12
> -#define XFS_TRANS_SET_DMATTRS                13
> -#define XFS_TRANS_GROWFS             14
> -#define XFS_TRANS_STRAT_WRITE                15
> -#define XFS_TRANS_DIOSTRAT           16
> -/* 17 was XFS_TRANS_WRITE_SYNC */
> -#define      XFS_TRANS_WRITEID               18
> -#define      XFS_TRANS_ADDAFORK              19
> -#define      XFS_TRANS_ATTRINVAL             20
> -#define      XFS_TRANS_ATRUNCATE             21
> -#define      XFS_TRANS_ATTR_SET              22
> -#define      XFS_TRANS_ATTR_RM               23
> -#define      XFS_TRANS_ATTR_FLAG             24
> -#define      XFS_TRANS_CLEAR_AGI_BUCKET      25
> -#define XFS_TRANS_QM_SBCHANGE                26
> -/*
> - * Dummy entries since we use the transaction type to index into the
> - * trans_type[] in xlog_recover_print_trans_head()
> - */
> -#define XFS_TRANS_DUMMY1             27
> -#define XFS_TRANS_DUMMY2             28
> -#define XFS_TRANS_QM_QUOTAOFF                29
> -#define XFS_TRANS_QM_DQALLOC         30
> -#define XFS_TRANS_QM_SETQLIM         31
> -#define XFS_TRANS_QM_DQCLUSTER               32
> -#define XFS_TRANS_QM_QINOCREATE              33
> -#define XFS_TRANS_QM_QUOTAOFF_END    34
> -#define XFS_TRANS_SB_UNIT            35
> -#define XFS_TRANS_FSYNC_TS           36
> -#define      XFS_TRANS_GROWFSRT_ALLOC        37
> -#define      XFS_TRANS_GROWFSRT_ZERO         38
> -#define      XFS_TRANS_GROWFSRT_FREE         39
> -#define      XFS_TRANS_SWAPEXT               40
> -#define      XFS_TRANS_SB_COUNT              41
> -#define      XFS_TRANS_CHECKPOINT            42
> -#define      XFS_TRANS_ICREATE               43
> -#define      XFS_TRANS_TYPE_MAX              43
> -/* new transaction types need to be reflected in xfs_logprint(8) */
> -
> -#define XFS_TRANS_TYPES \
> -     { XFS_TRANS_SETATTR_NOT_SIZE,   "SETATTR_NOT_SIZE" }, \
> -     { XFS_TRANS_SETATTR_SIZE,       "SETATTR_SIZE" }, \
> -     { XFS_TRANS_INACTIVE,           "INACTIVE" }, \
> -     { XFS_TRANS_CREATE,             "CREATE" }, \
> -     { XFS_TRANS_CREATE_TRUNC,       "CREATE_TRUNC" }, \
> -     { XFS_TRANS_TRUNCATE_FILE,      "TRUNCATE_FILE" }, \
> -     { XFS_TRANS_REMOVE,             "REMOVE" }, \
> -     { XFS_TRANS_LINK,               "LINK" }, \
> -     { XFS_TRANS_RENAME,             "RENAME" }, \
> -     { XFS_TRANS_MKDIR,              "MKDIR" }, \
> -     { XFS_TRANS_RMDIR,              "RMDIR" }, \
> -     { XFS_TRANS_SYMLINK,            "SYMLINK" }, \
> -     { XFS_TRANS_SET_DMATTRS,        "SET_DMATTRS" }, \
> -     { XFS_TRANS_GROWFS,             "GROWFS" }, \
> -     { XFS_TRANS_STRAT_WRITE,        "STRAT_WRITE" }, \
> -     { XFS_TRANS_DIOSTRAT,           "DIOSTRAT" }, \
> -     { XFS_TRANS_WRITEID,            "WRITEID" }, \
> -     { XFS_TRANS_ADDAFORK,           "ADDAFORK" }, \
> -     { XFS_TRANS_ATTRINVAL,          "ATTRINVAL" }, \
> -     { XFS_TRANS_ATRUNCATE,          "ATRUNCATE" }, \
> -     { XFS_TRANS_ATTR_SET,           "ATTR_SET" }, \
> -     { XFS_TRANS_ATTR_RM,            "ATTR_RM" }, \
> -     { XFS_TRANS_ATTR_FLAG,          "ATTR_FLAG" }, \
> -     { XFS_TRANS_CLEAR_AGI_BUCKET,   "CLEAR_AGI_BUCKET" }, \
> -     { XFS_TRANS_QM_SBCHANGE,        "QM_SBCHANGE" }, \
> -     { XFS_TRANS_QM_QUOTAOFF,        "QM_QUOTAOFF" }, \
> -     { XFS_TRANS_QM_DQALLOC,         "QM_DQALLOC" }, \
> -     { XFS_TRANS_QM_SETQLIM,         "QM_SETQLIM" }, \
> -     { XFS_TRANS_QM_DQCLUSTER,       "QM_DQCLUSTER" }, \
> -     { XFS_TRANS_QM_QINOCREATE,      "QM_QINOCREATE" }, \
> -     { XFS_TRANS_QM_QUOTAOFF_END,    "QM_QOFF_END" }, \
> -     { XFS_TRANS_SB_UNIT,            "SB_UNIT" }, \
> -     { XFS_TRANS_FSYNC_TS,           "FSYNC_TS" }, \
> -     { XFS_TRANS_GROWFSRT_ALLOC,     "GROWFSRT_ALLOC" }, \
> -     { XFS_TRANS_GROWFSRT_ZERO,      "GROWFSRT_ZERO" }, \
> -     { XFS_TRANS_GROWFSRT_FREE,      "GROWFSRT_FREE" }, \
> -     { XFS_TRANS_SWAPEXT,            "SWAPEXT" }, \
> -     { XFS_TRANS_SB_COUNT,           "SB_COUNT" }, \
> -     { XFS_TRANS_CHECKPOINT,         "CHECKPOINT" }, \
> -     { XFS_TRANS_DUMMY1,             "DUMMY1" }, \
> -     { XFS_TRANS_DUMMY2,             "DUMMY2" }, \
> -     { XLOG_UNMOUNT_REC_TYPE,        "UNMOUNT" }
> -
> -/*
> - * This structure is used to track log items associated with
> - * a transaction.  It points to the log item and keeps some
> - * flags to track the state of the log item.  It also tracks
> - * the amount of space needed to log the item it describes
> - * once we get to commit processing (see xfs_trans_commit()).
> - */
> -struct xfs_log_item_desc {
> -     struct xfs_log_item     *lid_item;
> -     struct list_head        lid_trans;
> -     unsigned char           lid_flags;
> -};
> -
> -#define XFS_LID_DIRTY                0x1
> -
> -#define      XFS_TRANS_MAGIC         0x5452414E      /* 'TRAN' */
> -/*
> - * Values for t_flags.
> - */
> -#define      XFS_TRANS_DIRTY         0x01    /* something needs to be logged 
> */
> -#define      XFS_TRANS_SB_DIRTY      0x02    /* superblock is modified */
> -#define      XFS_TRANS_PERM_LOG_RES  0x04    /* xact took a permanent log 
> res */
> -#define      XFS_TRANS_SYNC          0x08    /* make commit synchronous */
> -#define XFS_TRANS_DQ_DIRTY   0x10    /* at least one dquot in trx dirty */
> -#define XFS_TRANS_RESERVE    0x20    /* OK to use reserved data blocks */
> -#define XFS_TRANS_FREEZE_PROT        0x40    /* Transaction has elevated 
> writer
> -                                        count in superblock */
> -
> -/*
> - * Values for call flags parameter.
> - */
> -#define      XFS_TRANS_RELEASE_LOG_RES       0x4
> -#define      XFS_TRANS_ABORT                 0x8
> -
> -/*
> - * Field values for xfs_trans_mod_sb.
> - */
> -#define      XFS_TRANS_SB_ICOUNT             0x00000001
> -#define      XFS_TRANS_SB_IFREE              0x00000002
> -#define      XFS_TRANS_SB_FDBLOCKS           0x00000004
> -#define      XFS_TRANS_SB_RES_FDBLOCKS       0x00000008
> -#define      XFS_TRANS_SB_FREXTENTS          0x00000010
> -#define      XFS_TRANS_SB_RES_FREXTENTS      0x00000020
> -#define      XFS_TRANS_SB_DBLOCKS            0x00000040
> -#define      XFS_TRANS_SB_AGCOUNT            0x00000080
> -#define      XFS_TRANS_SB_IMAXPCT            0x00000100
> -#define      XFS_TRANS_SB_REXTSIZE           0x00000200
> -#define      XFS_TRANS_SB_RBMBLOCKS          0x00000400
> -#define      XFS_TRANS_SB_RBLOCKS            0x00000800
> -#define      XFS_TRANS_SB_REXTENTS           0x00001000
> -#define      XFS_TRANS_SB_REXTSLOG           0x00002000
> -
> -
> -/*
>   * Per-extent log reservation for the allocation btree changes
>   * involved in freeing or allocating an extent.
>   * 2 trees * (2 blocks/level * max depth - 1)
> @@ -282,22 +93,6 @@ struct xfs_log_item_desc {
>  #define      XFS_ATTRSET_LOG_COUNT           3
>  #define      XFS_ATTRRM_LOG_COUNT            3
>  
> -/*
> - * Here we centralize the specification of XFS meta-data buffer
> - * reference count values.  This determine how hard the buffer
> - * cache tries to hold onto the buffer.
> - */
> -#define      XFS_AGF_REF             4
> -#define      XFS_AGI_REF             4
> -#define      XFS_AGFL_REF            3
> -#define      XFS_INO_BTREE_REF       3
> -#define      XFS_ALLOC_BTREE_REF     2
> -#define      XFS_BMAP_BTREE_REF      2
> -#define      XFS_DIR_BTREE_REF       2
> -#define      XFS_INO_REF             2
> -#define      XFS_ATTR_BTREE_REF      1
> -#define      XFS_DQUOT_REF           1
> -
>  #ifdef __KERNEL__
>  
>  struct xfs_buf;
> 

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