File: [Development] / linux-2.6-xfs / fs / xfs / xfs_trans.h (download)
Revision 1.74, Tue Aug 8 01:13:30 1995 UTC (22 years, 2 months ago) by rcc
Branch: MAIN
Changes since 1.73: +10 -9
lines
284911 - for 8K inode clusters, added new inode and buffer formats and
renamed older formats. this is to prevent older kernels from mounting
filesystems with 8K inode clusters and let new kernels deal with old
format logs.
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#ifndef _XFS_TRANS_H
#define _XFS_TRANS_H
#ident "$Revision: 1.73 $"
struct buf;
struct xfs_efd_log_item;
struct xfs_efi_log_item;
struct xfs_inode;
struct xfs_item_ops;
struct xfs_log_iovec;
struct xfs_log_item;
struct xfs_log_item_desc;
struct xfs_mount;
struct xfs_trans;
typedef struct xfs_ail_entry {
struct xfs_log_item *ail_forw; /* AIL forw pointer */
struct xfs_log_item *ail_back; /* AIL back pointer */
} xfs_ail_entry_t;
/*
* This structure is passed as a parameter to xfs_trans_push_ail()
* and is used to track the what LSN the waiting processes are
* waiting to become unused.
*/
typedef struct xfs_ail_ticket {
xfs_lsn_t at_lsn; /* lsn waitin for */
struct xfs_ail_ticket *at_forw; /* wait list ptr */
struct xfs_ail_ticket *at_back; /* wait list ptr */
sv_t at_sema; /* wait sema */
} xfs_ail_ticket_t;
typedef struct xfs_log_item {
xfs_ail_entry_t li_ail; /* AIL pointers */
xfs_lsn_t li_lsn; /* last on-disk lsn */
struct xfs_log_item_desc *li_desc; /* ptr to current desc*/
struct xfs_mount *li_mountp; /* ptr to fs mount */
uint li_type; /* item type */
uint li_flags; /* misc flags */
struct xfs_log_item *li_bio_list; /* buffer item list */
void (*li_cb)(struct buf *,
struct xfs_log_item *);
/* buffer item iodone */
/* callback func */
struct xfs_item_ops *li_ops; /* function list */
} xfs_log_item_t;
#define XFS_LI_IN_AIL 0x1
/*
* Log item types.
*/
#define XFS_LI_OBUF 0x1234
#define XFS_LI_5_3_INODE 0x1235
#define XFS_LI_EFI 0x1236
#define XFS_LI_EFD 0x1237
#define XFS_LI_IUNLINK 0x1238
#define XFS_LI_6_1_INODE 0x1239
#define XFS_LI_6_1_BUF 0x123a
#define XFS_LI_INODE 0x123b
#define XFS_LI_BUF 0x123c
/*
* 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
#define XFS_TRANS_WRITE_SYNC 17
#define XFS_TRANS_WRITEID 18
#define XFS_TRANS_ADDAFORK 19
#define XFS_TRANS_AINVAL 20
#define XFS_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
typedef struct xfs_item_ops {
uint (*iop_size)(xfs_log_item_t *);
void (*iop_format)(xfs_log_item_t *, struct xfs_log_iovec *);
void (*iop_pin)(xfs_log_item_t *);
void (*iop_unpin)(xfs_log_item_t *);
uint (*iop_trylock)(xfs_log_item_t *);
void (*iop_unlock)(xfs_log_item_t *);
xfs_lsn_t (*iop_committed)(xfs_log_item_t *, xfs_lsn_t);
void (*iop_push)(xfs_log_item_t *);
void (*iop_abort)(xfs_log_item_t *);
} xfs_item_ops_t;
#define IOP_SIZE(ip) (*(ip)->li_ops->iop_size)(ip)
#define IOP_FORMAT(ip,vp) (*(ip)->li_ops->iop_format)(ip, vp)
#define IOP_PIN(ip) (*(ip)->li_ops->iop_pin)(ip)
#define IOP_UNPIN(ip) (*(ip)->li_ops->iop_unpin)(ip)
#define IOP_TRYLOCK(ip) (*(ip)->li_ops->iop_trylock)(ip)
#define IOP_UNLOCK(ip) (*(ip)->li_ops->iop_unlock)(ip)
#define IOP_COMMITTED(ip, lsn) (*(ip)->li_ops->iop_committed)(ip, lsn)
#define IOP_PUSH(ip) (*(ip)->li_ops->iop_push)(ip)
#define IOP_ABORT(ip) (*(ip)->li_ops->iop_abort)(ip)
/*
* Return values for the IOP_TRYLOCK() routines.
*/
#define XFS_ITEM_SUCCESS 0
#define XFS_ITEM_PINNED 1
#define XFS_ITEM_LOCKED 2
#define XFS_ITEM_FLUSHING 3
/*
* 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()).
*/
typedef struct xfs_log_item_desc {
xfs_log_item_t *lid_item;
ushort lid_size;
unsigned char lid_flags;
unsigned char lid_index;
} xfs_log_item_desc_t;
#define XFS_LID_DIRTY 0x1
#define XFS_LID_PINNED 0x2
#define XFS_LID_SYNC_UNLOCK 0x4
/*
* This structure is used to maintain a chunk list of log_item_desc
* structures. The free field is a bitmask indicating which descriptors
* in this chunk's array are free.
*/
typedef struct xfs_log_item_chunk {
struct xfs_log_item_chunk *lic_next;
unsigned int lic_free;
xfs_log_item_desc_t lic_descs[15];
} xfs_log_item_chunk_t;
#define XFS_LIC_MAX_SLOT 14
#define XFS_LIC_NUM_SLOTS 15
#define XFS_LIC_FREEMASK 0x7fff
/*
* Initialize the given chunk. For each descriptor, set its index
* to where it is in the chunk and its size to 0. Set the chunk's
* free descriptor mask to indicate that all descriptors are free.
*/
#define XFS_LIC_INIT(cp) { \
int x; \
xfs_log_item_desc_t *dp; \
dp = (cp)->lic_descs; \
for (x = 0; x <= XFS_LIC_MAX_SLOT; \
x++) { \
dp->lid_index = (unsigned char)x; \
dp++; \
} \
(cp)->lic_free = XFS_LIC_FREEMASK; \
}
#define XFS_LIC_VACANCY(cp) (((cp)->lic_free) & XFS_LIC_FREEMASK)
#define XFS_LIC_ALL_FREE(cp) ((cp)->lic_free |= XFS_LIC_FREEMASK)
#define XFS_LIC_ARE_ALL_FREE(cp) (((cp)->lic_free & XFS_LIC_FREEMASK) ==\
XFS_LIC_FREEMASK)
#define XFS_LIC_ISFREE(cp, slot) ((cp)->lic_free & (1 << (slot)))
#define XFS_LIC_CLAIM(cp, slot) ((cp)->lic_free &= ~(1 << (slot)))
#define XFS_LIC_RELSE(cp, slot) ((cp)->lic_free |= 1 << (slot))
#define XFS_LIC_SLOT(cp, slot) (&((cp)->lic_descs[slot]))
#define XFS_LIC_DESC_TO_SLOT(dp) ((uint)((dp)->lid_index))
/*
* Calculate the address of a chunk given a descriptor pointer:
* dp - dp->lid_index give the address of the start of the lic_descs array.
* From this we subtract the offset of the lic_descs field in a chunk.
* All of this yields the address of the chunk, which is
* cast to a chunk pointer.
*/
#define XFS_LIC_DESC_TO_CHUNK(dp) ((xfs_log_item_chunk_t*) \
(((caddr_t)((dp) - (dp)->lid_index)) -\
(caddr_t)(((xfs_log_item_chunk_t*) \
0)->lic_descs)))
/*
* This is the type of function which can be given to xfs_trans_callback()
* to be called upon the transaction's commit to disk.
*/
typedef void (*xfs_trans_callback_t)(struct xfs_trans *, void *);
/*
* 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 */
/*
* This is the structure maintained for every active transaction.
*/
typedef struct xfs_trans {
unsigned int t_magic; /* magic number */
xfs_log_callback_t t_logcb; /* log callback struct */
struct xfs_trans *t_forw; /* async list pointers */
struct xfs_trans *t_back; /* async list pointers */
unsigned int t_type; /* transaction type */
unsigned int t_log_res; /* amt of log space resvd */
unsigned int t_log_count; /* count for perm log res */
unsigned int t_blk_res; /* # of blocks resvd */
unsigned int t_blk_res_used; /* # of resvd blocks used */
unsigned int t_rtx_res; /* # of rt extents resvd */
unsigned int t_rtx_res_used; /* # of resvd rt extents used */
xfs_log_ticket_t t_ticket; /* log mgr ticket */
sema_t t_sema; /* sema for commit completion */
xfs_lsn_t t_lsn; /* log seq num of trans commit*/
struct xfs_mount *t_mountp; /* ptr to fs mount struct */
xfs_trans_callback_t t_callback; /* transaction callback */
void *t_callarg; /* callback arg */
unsigned int t_flags; /* misc flags */
long t_icount_delta; /* superblock icount change */
long t_ifree_delta; /* superblock ifree change */
long t_fdblocks_delta; /* superblock fdblocks chg */
long t_res_fdblocks_delta; /* on-disk only chg */
long t_frextents_delta;/* superblock freextents chg*/
long t_res_frextents_delta; /* on-disk only chg */
long t_ag_freeblks_delta; /* debugging counter */
long t_ag_flist_delta; /* debugging counter */
long t_ag_btree_delta; /* debugging counter */
long t_dblocks_delta;/* superblock dblocks change */
long t_agcount_delta;/* superblock agcount change */
unsigned int t_items_free; /* log item descs free */
xfs_log_item_chunk_t t_items; /* first log item desc chunk */
xfs_trans_header_t t_header; /* header for in-log trans */
} xfs_trans_t;
#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 */
/*
* Values for call flags parameter.
*/
#define XFS_TRANS_NOSLEEP 0x1
#define XFS_TRANS_WAIT 0x2
#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
/*
* Various log reservation values.
* These are based on the size of the file system block
* because that is what most transactions manipulate.
* Each adds in an additional 128 bytes per item logged to
* try to account for the overhead of the transaction mechanism.
*
* Note:
* Most of the reservations underestimate the number of allocation
* groups into which they could free extents in the xfs_bmap_finish()
* call. This is because the number in the worst case is quite high
* and quite unusual. In order to fix this we need to change
* xfs_bmap_finish() to free extents in only a single AG at a time.
* This will require changes to the EFI code as well, however, so that
* the EFI for the extents not freed is logged again in each transaction.
*/
/*
* In a write transaction we can allocate a maximum of 2
* extents. This gives:
* the inode getting the new extents: inode size
* the inode\'s bmap btree: max depth * block size
* the agfs of the ags from which the extents are allocate: 2 * sector
* the superblock free block counter: sector size
* the allocation btrees: 2 * 2 * max depth * block size
* And the bmap_finish transaction can free bmap blocks in a join:
* the agfs of the ags containing the blocks: 2 * sector size
* the super block free block counter: sector size
* the allocation btrees: 2 * 2 * max depth * block size
*/
#define XFS_CALC_WRITE_LOG_RES(mp) \
(MAX( \
((mp)->m_sb.sb_inodesize + \
XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK)) + \
(2 * (mp)->m_sb.sb_sectsize) + \
(mp)->m_sb.sb_sectsize + \
(2 * 2 * XFS_FSB_TO_B((mp), XFS_AG_MAXLEVELS(mp))) + \
(128 * (4 + XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) + (4 * XFS_AG_MAXLEVELS(mp))))),\
((2 * (mp)->m_sb.sb_sectsize) + \
(mp)->m_sb.sb_sectsize + \
(2 * 2 * XFS_FSB_TO_B((mp), XFS_AG_MAXLEVELS(mp))) + \
(128 * (3 + (4 * XFS_AG_MAXLEVELS(mp)))))))
#define XFS_WRITE_LOG_RES(mp) ((mp)->m_reservations.tr_write)
/*
* In truncating a file we can modify:
* the inode being truncated: inode size
* the inode\'s bmap btree: max depth * block size
* And the bmap_finish transaction can free the blocks and bmap blocks:
* the agf for each of the ags: 4 * sector size
* the flist block for each of the ags: 4 * sector size
* the super block to reflect the freed blocks: sector size
* worst case split in allocation btrees per extent assuming 4 extents:
* 4 exts * 2 trees * 2 * max depth * block size
*/
#define XFS_CALC_ITRUNCATE_LOG_RES(mp) \
(MAX( \
((mp)->m_sb.sb_inodesize + \
XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK)) + \
(128 * (1 + XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK)))), \
((4 * (mp)->m_sb.sb_sectsize) + \
(4 * (mp)->m_sb.sb_sectsize) + \
(mp)->m_sb.sb_sectsize + \
(4 * 2 * 2 * XFS_FSB_TO_B((mp), XFS_AG_MAXLEVELS(mp))) + \
(128 * (5 + (4 * XFS_AG_MAXLEVELS(mp)))))))
#define XFS_ITRUNCATE_LOG_RES(mp) ((mp)->m_reservations.tr_itruncate)
/*
* In renaming a files we can modify:
* the four inodes involved: 4 * inode size
* the two directory btrees: 2 * max depth * block size
* the two directory bmap btrees: 2 * max depth * block size
* And the bmap_finish transaction can free dir and bmap blocks giving:
* the agf for the ag in which the blocks live: 2 * sector size
* the superblock for the free block count: sector size
* the allocation btrees: 2 * 2 * max depth * block size
*/
#define XFS_CALC_RENAME_LOG_RES(mp) \
(MAX( \
((4 * (mp)->m_sb.sb_inodesize) + \
(2 * XFS_FSB_TO_B((mp), XFS_DA_NODE_MAXDEPTH)) + \
(2 * XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK))) + \
(128 * (4 + (2 * XFS_DA_NODE_MAXDEPTH) + \
(2 * XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK))))), \
((2 * (mp)->m_sb.sb_sectsize) + \
(mp)->m_sb.sb_sectsize + \
(2 * 2 * XFS_FSB_TO_B((mp), XFS_AG_MAXLEVELS(mp))) + \
(128 * (3 + (4 * XFS_AG_MAXLEVELS(mp)))))))
#define XFS_RENAME_LOG_RES(mp) ((mp)->m_reservations.tr_rename)
/*
* For creating a link to an inode:
* the parent directory inode: inode size
* the linked inode: inode size
* the directory btree could split: max depth * block size
* the directory bmap btree could join or split: max depth * block size
* And the bmap_finish transaction can free some bmap blocks giving:
* the agf for the ag in which the blocks live
* the superblock for the free block count: sector size
* the allocation btrees: 2 * max depth * block size
*/
#define XFS_CALC_LINK_LOG_RES(mp) \
(MAX( \
((mp)->m_sb.sb_inodesize + \
(mp)->m_sb.sb_inodesize + \
XFS_FSB_TO_B((mp), XFS_DA_NODE_MAXDEPTH) + \
XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK)) + \
(128 * (2 + XFS_DA_NODE_MAXDEPTH + XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK)))), \
((mp)->m_sb.sb_sectsize + \
(mp)->m_sb.sb_sectsize + \
(2 * XFS_FSB_TO_B((mp), XFS_AG_MAXLEVELS(mp)))) + \
(128 * (2 + (2 * XFS_AG_MAXLEVELS(mp))))))
#define XFS_LINK_LOG_RES(mp) ((mp)->m_reservations.tr_link)
/*
* For removing a directory entry we can modify:
* the parent directory inode: inode size
* the removed inode: inode size
* the directory btree could join: max depth * block size
* the directory bmap btree could join or split : max depth * block size
* And the bmap_finish transaction can free the dir blocks freed giving:
* the agf for the ag in which the blocks live
* the superblock for the free block count: sector size
* the allocation btrees: 2 * max depth * block size
*/
#define XFS_CALC_REMOVE_LOG_RES(mp) \
(MAX( \
((mp)->m_sb.sb_inodesize + \
(mp)->m_sb.sb_inodesize + \
XFS_FSB_TO_B((mp), XFS_DA_NODE_MAXDEPTH) + \
XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK)) + \
(128 * (2 + XFS_DA_NODE_MAXDEPTH + XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK)))), \
((mp)->m_sb.sb_sectsize + \
(mp)->m_sb.sb_sectsize + \
(2 * XFS_FSB_TO_B((mp), XFS_AG_MAXLEVELS(mp)))) + \
(128 * (2 + (2 * XFS_AG_MAXLEVELS(mp))))))
#define XFS_REMOVE_LOG_RES(mp) ((mp)->m_reservations.tr_remove)
/*
* For symlink we can modify:
* the parent directory inode: inode size
* the new inode: inode size
* the inode btree entry: 1 block
* the directory btree: max depth * block size
* the directory inode\'s bmap btree: max depth * block size
* the blocks for the symlink: 1 KB
* Or in the first xact we allocate some inodes giving:
* the agi and agf of the ag getting the new inodes: 2 * sectorsize
* the inode blocks allocated: XFS_IALLOC_BLOCKS * blocksize
* the inode btree: max depth * blocksize
* the allocation btrees: 2 * max depth * block size
*/
#define XFS_CALC_SYMLINK_LOG_RES(mp) \
(MAX( \
((mp)->m_sb.sb_inodesize + \
(mp)->m_sb.sb_inodesize + \
XFS_FSB_TO_B(mp, 1) + \
XFS_FSB_TO_B((mp), XFS_DA_NODE_MAXDEPTH) + \
XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK)) + \
1024 + \
(128 * (5 + XFS_DA_NODE_MAXDEPTH + XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK)))), \
(2 * (mp)->m_sb.sb_sectsize + \
XFS_FSB_TO_B((mp), XFS_IALLOC_BLOCKS((mp))) + \
XFS_FSB_TO_B((mp), XFS_IN_MAXLEVELS(mp)) + \
(2 * XFS_FSB_TO_B((mp), XFS_AG_MAXLEVELS(mp)))) + \
(128 * (2 + XFS_IALLOC_BLOCKS(mp) + XFS_IN_MAXLEVELS(mp) + \
(2 * XFS_AG_MAXLEVELS(mp))))))
#define XFS_SYMLINK_LOG_RES(mp) ((mp)->m_reservations.tr_symlink)
/*
* For create we can modify:
* the parent directory inode: inode size
* the new inode: inode size
* the inode btree entry: block size
* the directory btree: max depth * block size
* the directory inode\'s bmap btree: max depth * block size
* Or in the first xact we allocate some inodes giving:
* the agi and agf of the ag getting the new inodes: 2 * sectorsize
* the inode blocks allocated: XFS_IALLOC_BLOCKS * blocksize
* the inode btree: max depth * blocksize
* the allocation btrees: 2 * max depth * block size
*/
#define XFS_CALC_CREATE_LOG_RES(mp) \
(MAX( \
((mp)->m_sb.sb_inodesize + \
(mp)->m_sb.sb_inodesize + \
XFS_FSB_TO_B(mp, 1) + \
XFS_FSB_TO_B((mp), XFS_DA_NODE_MAXDEPTH) + \
XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK)) + \
(128 * (3 + XFS_DA_NODE_MAXDEPTH + XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK)))), \
(2 * (mp)->m_sb.sb_sectsize + \
XFS_FSB_TO_B((mp), XFS_IALLOC_BLOCKS((mp))) + \
XFS_FSB_TO_B((mp), XFS_IN_MAXLEVELS(mp)) + \
(2 * XFS_FSB_TO_B((mp), XFS_AG_MAXLEVELS(mp)))) + \
(128 * (2 + XFS_IALLOC_BLOCKS(mp) + XFS_IN_MAXLEVELS(mp) + \
(2 * XFS_AG_MAXLEVELS(mp))))))
#define XFS_CREATE_LOG_RES(mp) ((mp)->m_reservations.tr_create)
/*
* Making a new directory is the same as creating a new file.
*/
#define XFS_CALC_MKDIR_LOG_RES(mp) XFS_CREATE_LOG_RES(mp)
#define XFS_MKDIR_LOG_RES(mp) ((mp)->m_reservations.tr_mkdir)
/*
* In freeing an inode we can modify:
* the inode being freed: inode size
* the super block free inode counter: sector size
* the agi hash list and counters: sector size
* the inode btree entry: block size
* the on disk inode before ours in the agi hash list: block size
*/
#define XFS_CALC_IFREE_LOG_RES(mp) \
((mp)->m_sb.sb_inodesize + \
(mp)->m_sb.sb_sectsize + \
(mp)->m_sb.sb_sectsize + \
XFS_FSB_TO_B((mp), 1) + \
XFS_FSB_TO_B((mp), 1) + \
(128 * 5))
#define XFS_IFREE_LOG_RES(mp) ((mp)->m_reservations.tr_ifree)
/*
* When only changeing the inode we log the inode and we add a
* bit of slop for the transaction stuff.
*/
#define XFS_CALC_ICHANGE_LOG_RES(mp) ((mp)->m_sb.sb_inodesize + 512)
#define XFS_ICHANGE_LOG_RES(mp) ((mp)->m_reservations.tr_ichange)
/*
* Growing the data section of the filesystem.
* superblock
* agi and agf
* allocation btrees
*/
#define XFS_CALC_GROWDATA_LOG_RES(mp) \
((mp)->m_sb.sb_sectsize * 3 + \
(2 * XFS_FSB_TO_B((mp), XFS_AG_MAXLEVELS(mp))) + \
(128 * (3 + (2 * XFS_AG_MAXLEVELS(mp)))))
#define XFS_GROWDATA_LOG_RES(mp) ((mp)->m_reservations.tr_growdata)
/*
* Logging the inode modification timestamp on a synchronous write.
* inode
*/
#define XFS_CALC_SWRITE_LOG_RES(mp) \
((mp)->m_sb.sb_inodesize + 128)
#define XFS_SWRITE_LOG_RES(mp) ((mp)->m_reservations.tr_swrite)
/*
* Logging the inode mode bits when writing a setuid/setgid file
* inode
*/
#define XFS_CALC_WRITEID_LOG_RES(mp) \
((mp)->m_sb.sb_inodesize + 128)
#define XFS_WRITEID_LOG_RES(mp) ((mp)->m_reservations.tr_swrite)
/*
* Converting the inode from non-attributed to attributed.
* the inode being converted: inode size
* agf block and superblock (for block allocation)
* the new block
* allocation btrees
*/
#define XFS_CALC_ADDAFORK_LOG_RES(mp) \
((mp)->m_sb.sb_inodesize + \
(mp)->m_sb.sb_sectsize * 2 + \
XFS_FSB_TO_B(mp, 1) + \
(2 * XFS_FSB_TO_B((mp), XFS_AG_MAXLEVELS(mp))) + \
(128 * (3 + 2 * XFS_AG_MAXLEVELS(mp))))
#define XFS_ADDAFORK_LOG_RES(mp) ((mp)->m_reservations.tr_addafork)
/*
* Logging an invalidated buffer when truncating the attribute fork.
* "max bufs" buffer log items
*/
#define XFS_ATRUNC_MAX_BUFS 8
#define XFS_CALC_AINVAL_LOG_RES(mp) \
((XFS_ATRUNC_MAX_BUFS * 128) + 128)
#define XFS_AINVAL_LOG_RES(mp) ((mp)->m_reservations.tr_ainval)
/*
* Setting an attribute is the same as creating a new file.
*/
#define XFS_CALC_SETATTR_LOG_RES(mp) 4*XFS_CREATE_LOG_RES(mp) /* GROT? */
#define XFS_SETATTR_LOG_RES(mp) ((mp)->m_reservations.tr_setattr)
/*
* Removing an attribute is the same as creating a new file.
*/
#define XFS_CALC_RMATTR_LOG_RES(mp) 4*XFS_REMOVE_LOG_RES(mp) /* GROT? */
#define XFS_RMATTR_LOG_RES(mp) ((mp)->m_reservations.tr_rmattr)
/*
* Setting/clearing the INCOMPLETE flag on an attribute.
*/
#define XFS_CALC_ATTRFLAG_LOG_RES(mp) 2*XFS_FSB_TO_B((mp), 1) /* GROT? */
#define XFS_ATTRFLAG_LOG_RES(mp) ((mp)->m_reservations.tr_rmattr)
/*
* Clearing a bad agino number in an agi hash bucket.
*/
#define XFS_CALC_CLEAR_AGI_BUCKET_LOG_RES(mp) \
((mp)->m_sb.sb_sectsize + 128)
#define XFS_CLEAR_AGI_BUCKET_LOG_RES(mp) ((mp)->m_reservations.tr_clearagi)
/*
* Various log count values.
*/
#define XFS_DEFAULT_LOG_COUNT 1
#define XFS_DEFAULT_PERM_LOG_COUNT 2
#define XFS_ITRUNCATE_LOG_COUNT 2
#define XFS_CREATE_LOG_COUNT 2
#define XFS_MKDIR_LOG_COUNT 3
#define XFS_SYMLINK_LOG_COUNT 3
#define XFS_REMOVE_LOG_COUNT 2
#define XFS_LINK_LOG_COUNT 2
#define XFS_RENAME_LOG_COUNT 2
#define XFS_WRITE_LOG_COUNT 2
#define XFS_ADDAFORK_LOG_COUNT 2
#define XFS_AINVAL_LOG_COUNT 1
#define XFS_SETATTR_LOG_COUNT 3
#define XFS_RMATTR_LOG_COUNT 3
#define XFS_ATTRFLAG_LOG_COUNT 1
/*
* 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 2
#define XFS_ALLOC_BTREE_REF 2
#define XFS_BMAP_BTREE_REF 2
#define XFS_GEN_LBTREE_REF 2
#define XFS_GEN_SBTREE_REF 2
#define XFS_INO_BTREE_REF 2
#define XFS_INO_REF 1
/*
* XFS transaction mechanism exported interfaces that are
* actually macros.
*/
#define xfs_trans_get_log_res(tp) ((tp)->t_log_res)
#define xfs_trans_get_log_count(tp) ((tp)->t_log_count)
#define xfs_trans_get_block_res(tp) ((tp)->t_blk_res)
#define xfs_trans_set_sync(tp) ((tp)->t_flags |= XFS_TRANS_SYNC)
#ifdef DEBUG
#define xfs_trans_agblocks_delta(tp, d) ((tp)->t_ag_freeblks_delta += (long)d)
#define xfs_trans_agflist_delta(tp, d) ((tp)->t_ag_flist_delta += (long)d)
#define xfs_trans_agbtree_delta(tp, d) ((tp)->t_ag_btree_delta += (long)d)
#else
#define xfs_trans_agblocks_delta(tp, d)
#define xfs_trans_agflist_delta(tp, d)
#define xfs_trans_agbtree_delta(tp, d)
#endif
/*
* XFS transaction mechanism exported interfaces.
*/
void xfs_trans_init(struct xfs_mount *);
xfs_trans_t *xfs_trans_alloc(struct xfs_mount *, uint);
xfs_trans_t *xfs_trans_dup(xfs_trans_t *);
int xfs_trans_reserve(xfs_trans_t *, uint, uint, uint,
uint, uint);
void xfs_trans_callback(xfs_trans_t *,
void (*)(xfs_trans_t *, void *), void *);
void xfs_trans_mod_sb(xfs_trans_t *, uint, long);
struct buf *xfs_trans_get_buf(xfs_trans_t *, dev_t, daddr_t, int, uint);
struct buf *xfs_trans_getsb(xfs_trans_t *, int);
int xfs_trans_read_buf(xfs_trans_t *, dev_t, daddr_t,
int, uint, struct buf **);
void xfs_trans_brelse(xfs_trans_t *, struct buf *);
void xfs_trans_bjoin(xfs_trans_t *, struct buf *);
void xfs_trans_bhold(xfs_trans_t *, struct buf *);
void xfs_trans_bhold_until_committed(xfs_trans_t *, struct buf *);
void xfs_trans_binval(xfs_trans_t *, struct buf *);
void xfs_trans_inode_buf(xfs_trans_t *, struct buf *);
void xfs_trans_inode_alloc_buf(xfs_trans_t *, struct buf *);
int xfs_trans_iget(struct xfs_mount *, xfs_trans_t *,
xfs_ino_t , uint, struct xfs_inode **);
void xfs_trans_iput(xfs_trans_t *, struct xfs_inode *, uint);
void xfs_trans_ijoin(xfs_trans_t *, struct xfs_inode *, uint);
void xfs_trans_ihold(xfs_trans_t *, struct xfs_inode *);
void xfs_trans_ihold_release(xfs_trans_t *, struct xfs_inode *);
void xfs_trans_log_buf(xfs_trans_t *, struct buf *, uint, uint);
void xfs_trans_log_inode(xfs_trans_t *, struct xfs_inode *, uint);
struct xfs_efi_log_item *xfs_trans_get_efi(xfs_trans_t *, uint);
void xfs_efi_release(struct xfs_efi_log_item *, uint);
void xfs_trans_log_efi_extent(xfs_trans_t *,
struct xfs_efi_log_item *,
xfs_fsblock_t,
xfs_extlen_t);
struct xfs_efd_log_item *xfs_trans_get_efd(xfs_trans_t *,
struct xfs_efi_log_item *,
uint);
void xfs_trans_log_efd_extent(xfs_trans_t *,
struct xfs_efd_log_item *,
xfs_fsblock_t,
xfs_extlen_t);
int xfs_trans_commit(xfs_trans_t *, uint flags);
void xfs_trans_commit_async(struct xfs_mount *);
void xfs_trans_cancel(xfs_trans_t *, int);
void xfs_trans_ail_init(struct xfs_mount *);
xfs_lsn_t xfs_trans_push_ail(struct xfs_mount *, xfs_lsn_t);
xfs_lsn_t xfs_trans_tail_ail(struct xfs_mount *);
void xfs_trans_unlocked_item(struct xfs_mount *,
xfs_log_item_t *);
/*
* Not necessarily exported, but used outside a single file.
*/
int xfs_trans_lsn_danger(struct xfs_mount *, xfs_lsn_t);
#endif /* _XFS_TRANS_H */
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