| /* |
| * Copyright (c) 2000-2002,2005 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_TRANS_H__ |
| #define __XFS_TRANS_H__ |
| |
| /* kernel only transaction subsystem defines */ |
| |
| struct xfs_buf; |
| struct xfs_buftarg; |
| 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_desc; |
| struct xfs_mount; |
| struct xfs_trans; |
| struct xfs_trans_res; |
| struct xfs_dquot_acct; |
| struct xfs_busy_extent; |
| |
| typedef struct xfs_log_item { |
| struct list_head 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 */ |
| struct xfs_ail *li_ailp; /* ptr to AIL */ |
| uint li_type; /* item type */ |
| uint li_flags; /* misc flags */ |
| struct xfs_log_item *li_bio_list; /* buffer item list */ |
| void (*li_cb)(struct xfs_buf *, |
| struct xfs_log_item *); |
| /* buffer item iodone */ |
| /* callback func */ |
| const struct xfs_item_ops *li_ops; /* function list */ |
| |
| /* delayed logging */ |
| struct list_head li_cil; /* CIL pointers */ |
| struct xfs_log_vec *li_lv; /* active log vector */ |
| xfs_lsn_t li_seq; /* CIL commit seq */ |
| } xfs_log_item_t; |
| |
| #define XFS_LI_IN_AIL 0x1 |
| #define XFS_LI_ABORTED 0x2 |
| |
| #define XFS_LI_FLAGS \ |
| { XFS_LI_IN_AIL, "IN_AIL" }, \ |
| { XFS_LI_ABORTED, "ABORTED" } |
| |
| struct xfs_item_ops { |
| void (*iop_size)(xfs_log_item_t *, int *, int *); |
| 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 *, int remove); |
| uint (*iop_push)(struct xfs_log_item *, struct list_head *); |
| void (*iop_unlock)(xfs_log_item_t *); |
| xfs_lsn_t (*iop_committed)(xfs_log_item_t *, xfs_lsn_t); |
| void (*iop_committing)(xfs_log_item_t *, xfs_lsn_t); |
| }; |
| |
| void xfs_log_item_init(struct xfs_mount *mp, struct xfs_log_item *item, |
| int type, const struct xfs_item_ops *ops); |
| |
| /* |
| * Return values for the iop_push() routines. |
| */ |
| #define XFS_ITEM_SUCCESS 0 |
| #define XFS_ITEM_PINNED 1 |
| #define XFS_ITEM_LOCKED 2 |
| #define XFS_ITEM_FLUSHING 3 |
| |
| |
| /* |
| * This is the structure maintained for every active transaction. |
| */ |
| typedef struct xfs_trans { |
| unsigned int t_magic; /* magic number */ |
| 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 */ |
| struct xlog_ticket *t_ticket; /* log mgr ticket */ |
| xfs_lsn_t t_lsn; /* log seq num of start of |
| * transaction. */ |
| xfs_lsn_t t_commit_lsn; /* log seq num of end of |
| * transaction. */ |
| struct xfs_mount *t_mountp; /* ptr to fs mount struct */ |
| struct xfs_dquot_acct *t_dqinfo; /* acctg info for dquots */ |
| unsigned int t_flags; /* misc flags */ |
| int64_t t_icount_delta; /* superblock icount change */ |
| int64_t t_ifree_delta; /* superblock ifree change */ |
| int64_t t_fdblocks_delta; /* superblock fdblocks chg */ |
| int64_t t_res_fdblocks_delta; /* on-disk only chg */ |
| int64_t t_frextents_delta;/* superblock freextents chg*/ |
| int64_t t_res_frextents_delta; /* on-disk only chg */ |
| #if defined(DEBUG) || defined(XFS_WARN) |
| int64_t t_ag_freeblks_delta; /* debugging counter */ |
| int64_t t_ag_flist_delta; /* debugging counter */ |
| int64_t t_ag_btree_delta; /* debugging counter */ |
| #endif |
| int64_t t_dblocks_delta;/* superblock dblocks change */ |
| int64_t t_agcount_delta;/* superblock agcount change */ |
| int64_t t_imaxpct_delta;/* superblock imaxpct change */ |
| int64_t t_rextsize_delta;/* superblock rextsize chg */ |
| int64_t t_rbmblocks_delta;/* superblock rbmblocks chg */ |
| int64_t t_rblocks_delta;/* superblock rblocks change */ |
| int64_t t_rextents_delta;/* superblocks rextents chg */ |
| int64_t t_rextslog_delta;/* superblocks rextslog chg */ |
| struct list_head t_items; /* log item descriptors */ |
| struct list_head t_busy; /* list of busy extents */ |
| unsigned long t_pflags; /* saved process flags state */ |
| } xfs_trans_t; |
| |
| /* |
| * 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) |
| |
| #if defined(DEBUG) || defined(XFS_WARN) |
| #define xfs_trans_agblocks_delta(tp, d) ((tp)->t_ag_freeblks_delta += (int64_t)d) |
| #define xfs_trans_agflist_delta(tp, d) ((tp)->t_ag_flist_delta += (int64_t)d) |
| #define xfs_trans_agbtree_delta(tp, d) ((tp)->t_ag_btree_delta += (int64_t)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. |
| */ |
| xfs_trans_t *xfs_trans_alloc(struct xfs_mount *, uint); |
| xfs_trans_t *_xfs_trans_alloc(struct xfs_mount *, uint, xfs_km_flags_t); |
| xfs_trans_t *xfs_trans_dup(xfs_trans_t *); |
| int xfs_trans_reserve(struct xfs_trans *, struct xfs_trans_res *, |
| uint, uint); |
| void xfs_trans_mod_sb(xfs_trans_t *, uint, int64_t); |
| |
| struct xfs_buf *xfs_trans_get_buf_map(struct xfs_trans *tp, |
| struct xfs_buftarg *target, |
| struct xfs_buf_map *map, int nmaps, |
| uint flags); |
| |
| static inline struct xfs_buf * |
| xfs_trans_get_buf( |
| struct xfs_trans *tp, |
| struct xfs_buftarg *target, |
| xfs_daddr_t blkno, |
| int numblks, |
| uint flags) |
| { |
| DEFINE_SINGLE_BUF_MAP(map, blkno, numblks); |
| return xfs_trans_get_buf_map(tp, target, &map, 1, flags); |
| } |
| |
| int xfs_trans_read_buf_map(struct xfs_mount *mp, |
| struct xfs_trans *tp, |
| struct xfs_buftarg *target, |
| struct xfs_buf_map *map, int nmaps, |
| xfs_buf_flags_t flags, |
| struct xfs_buf **bpp, |
| const struct xfs_buf_ops *ops); |
| |
| static inline int |
| xfs_trans_read_buf( |
| struct xfs_mount *mp, |
| struct xfs_trans *tp, |
| struct xfs_buftarg *target, |
| xfs_daddr_t blkno, |
| int numblks, |
| xfs_buf_flags_t flags, |
| struct xfs_buf **bpp, |
| const struct xfs_buf_ops *ops) |
| { |
| DEFINE_SINGLE_BUF_MAP(map, blkno, numblks); |
| return xfs_trans_read_buf_map(mp, tp, target, &map, 1, |
| flags, bpp, ops); |
| } |
| |
| struct xfs_buf *xfs_trans_getsb(xfs_trans_t *, struct xfs_mount *, int); |
| |
| void xfs_trans_brelse(xfs_trans_t *, struct xfs_buf *); |
| void xfs_trans_bjoin(xfs_trans_t *, struct xfs_buf *); |
| void xfs_trans_bhold(xfs_trans_t *, struct xfs_buf *); |
| void xfs_trans_bhold_release(xfs_trans_t *, struct xfs_buf *); |
| void xfs_trans_binval(xfs_trans_t *, struct xfs_buf *); |
| void xfs_trans_inode_buf(xfs_trans_t *, struct xfs_buf *); |
| void xfs_trans_stale_inode_buf(xfs_trans_t *, struct xfs_buf *); |
| void xfs_trans_ordered_buf(xfs_trans_t *, struct xfs_buf *); |
| void xfs_trans_dquot_buf(xfs_trans_t *, struct xfs_buf *, uint); |
| void xfs_trans_inode_alloc_buf(xfs_trans_t *, struct xfs_buf *); |
| void xfs_trans_ichgtime(struct xfs_trans *, struct xfs_inode *, int); |
| void xfs_trans_ijoin(struct xfs_trans *, struct xfs_inode *, uint); |
| void xfs_trans_log_buf(xfs_trans_t *, struct xfs_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); |
| int xfs_trans_roll(struct xfs_trans **, struct xfs_inode *); |
| void xfs_trans_cancel(xfs_trans_t *, int); |
| int xfs_trans_ail_init(struct xfs_mount *); |
| void xfs_trans_ail_destroy(struct xfs_mount *); |
| |
| extern kmem_zone_t *xfs_trans_zone; |
| extern kmem_zone_t *xfs_log_item_desc_zone; |
| |
| #endif /* __XFS_TRANS_H__ */ |