| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
| * All Rights Reserved. |
| */ |
| |
| #ifndef __XFS_TRANS_H__ |
| #define __XFS_TRANS_H__ |
| |
| struct xfs_mount; |
| struct xfs_buftarg; |
| struct xfs_buf; |
| struct xfs_buf_map; |
| |
| /* |
| * Userspace Transaction interface |
| */ |
| |
| typedef struct xfs_log_item { |
| struct list_head li_trans; /* transaction list */ |
| xfs_lsn_t li_lsn; /* last on-disk lsn */ |
| struct xfs_mount *li_mountp; /* ptr to fs mount */ |
| uint li_type; /* item type */ |
| unsigned long li_flags; /* misc flags */ |
| struct xfs_buf *li_buf; /* real buffer pointer */ |
| struct list_head li_bio_list; /* buffer item list */ |
| } xfs_log_item_t; |
| |
| #define XFS_LI_DIRTY 3 /* log item dirty in transaction */ |
| |
| struct xfs_inode_log_item { |
| xfs_log_item_t ili_item; /* common portion */ |
| struct xfs_inode *ili_inode; /* inode pointer */ |
| unsigned short ili_lock_flags; /* lock flags */ |
| unsigned int ili_last_fields; /* fields when flushed*/ |
| unsigned int ili_fields; /* fields to be logged */ |
| unsigned int ili_fsync_fields; /* ignored by userspace */ |
| spinlock_t ili_lock; |
| }; |
| |
| typedef struct xfs_buf_log_item { |
| xfs_log_item_t bli_item; /* common item structure */ |
| struct xfs_buf *bli_buf; /* real buffer pointer */ |
| unsigned int bli_flags; /* misc flags */ |
| unsigned int bli_recur; /* recursion count */ |
| xfs_buf_log_format_t __bli_format; /* in-log header */ |
| } xfs_buf_log_item_t; |
| |
| #define XFS_BLI_DIRTY (1<<0) |
| #define XFS_BLI_HOLD (1<<1) |
| #define XFS_BLI_STALE (1<<2) |
| #define XFS_BLI_INODE_ALLOC_BUF (1<<3) |
| #define XFS_BLI_ORDERED (1<<4) |
| |
| typedef struct xfs_qoff_logitem { |
| xfs_log_item_t qql_item; /* common portion */ |
| struct xfs_qoff_logitem *qql_start_lip; /* qoff-start logitem, if any */ |
| xfs_qoff_logformat_t qql_format; /* logged structure */ |
| } xfs_qoff_logitem_t; |
| |
| typedef struct xfs_trans { |
| 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 */ |
| unsigned int t_flags; /* misc flags */ |
| xfs_fsblock_t t_firstblock; /* first block allocated */ |
| struct xfs_mount *t_mountp; /* ptr to fs mount struct */ |
| struct xfs_dquot_acct *t_dqinfo; /* acctg info for dquots */ |
| long t_icount_delta; /* superblock icount change */ |
| long t_ifree_delta; /* superblock ifree change */ |
| long t_fdblocks_delta;/* superblock fdblocks chg */ |
| long t_frextents_delta;/* superblock freextents chg*/ |
| struct list_head t_items; /* log item descriptors */ |
| struct list_head t_dfops; /* deferred operations */ |
| } xfs_trans_t; |
| |
| void xfs_trans_init(struct xfs_mount *); |
| int xfs_trans_roll(struct xfs_trans **); |
| |
| int libxfs_trans_alloc(struct xfs_mount *mp, struct xfs_trans_res *resp, |
| uint blocks, uint rtextents, uint flags, |
| struct xfs_trans **tpp); |
| int libxfs_trans_alloc_inode(struct xfs_inode *ip, struct xfs_trans_res *resv, |
| unsigned int dblocks, unsigned int rblocks, bool force, |
| struct xfs_trans **tpp); |
| int libxfs_trans_alloc_rollable(struct xfs_mount *mp, uint blocks, |
| struct xfs_trans **tpp); |
| int libxfs_trans_alloc_empty(struct xfs_mount *mp, struct xfs_trans **tpp); |
| int libxfs_trans_commit(struct xfs_trans *); |
| void libxfs_trans_cancel(struct xfs_trans *); |
| |
| /* cancel dfops associated with a transaction */ |
| void xfs_defer_cancel(struct xfs_trans *); |
| |
| struct xfs_buf *libxfs_trans_getsb(struct xfs_trans *); |
| |
| void libxfs_trans_ijoin(struct xfs_trans *, struct xfs_inode *, uint); |
| void libxfs_trans_log_inode (struct xfs_trans *, struct xfs_inode *, |
| uint); |
| int libxfs_trans_roll_inode (struct xfs_trans **, struct xfs_inode *); |
| |
| void libxfs_trans_brelse(struct xfs_trans *, struct xfs_buf *); |
| void libxfs_trans_binval(struct xfs_trans *, struct xfs_buf *); |
| void libxfs_trans_bjoin(struct xfs_trans *, struct xfs_buf *); |
| void libxfs_trans_bhold(struct xfs_trans *, struct xfs_buf *); |
| void libxfs_trans_bhold_release(struct xfs_trans *, struct xfs_buf *); |
| void libxfs_trans_dirty_buf(struct xfs_trans *, struct xfs_buf *); |
| void libxfs_trans_log_buf(struct xfs_trans *, struct xfs_buf *, |
| uint, uint); |
| bool libxfs_trans_ordered_buf(xfs_trans_t *, struct xfs_buf *); |
| |
| int libxfs_trans_get_buf_map(struct xfs_trans *tp, struct xfs_buftarg *btp, |
| struct xfs_buf_map *map, int nmaps, xfs_buf_flags_t flags, |
| struct xfs_buf **bpp); |
| |
| int libxfs_trans_read_buf_map(struct xfs_mount *mp, struct xfs_trans *tp, |
| struct xfs_buftarg *btp, |
| 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 |
| libxfs_trans_get_buf( |
| struct xfs_trans *tp, |
| struct xfs_buftarg *btp, |
| xfs_daddr_t blkno, |
| int numblks, |
| uint flags, |
| struct xfs_buf **bpp) |
| { |
| DEFINE_SINGLE_BUF_MAP(map, blkno, numblks); |
| |
| return libxfs_trans_get_buf_map(tp, btp, &map, 1, flags, bpp); |
| } |
| |
| static inline int |
| libxfs_trans_read_buf( |
| struct xfs_mount *mp, |
| struct xfs_trans *tp, |
| struct xfs_buftarg *btp, |
| 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 libxfs_trans_read_buf_map(mp, tp, btp, &map, 1, flags, bpp, ops); |
| } |
| |
| #define xfs_log_item_in_current_chkpt(lip) (false) |
| #define xfs_trans_item_relog(lip, tp) (NULL) |
| |
| /* Contorted mess to make gcc shut up about unused vars. */ |
| #define xlog_grant_push_threshold(log, need) \ |
| ((log) == (log) ? NULLCOMMITLSN : NULLCOMMITLSN) |
| |
| /* from xfs_log.h */ |
| /* |
| * By comparing each component, we don't have to worry about extra |
| * endian issues in treating two 32 bit numbers as one 64 bit number |
| */ |
| static inline xfs_lsn_t _lsn_cmp(xfs_lsn_t lsn1, xfs_lsn_t lsn2) |
| { |
| if (CYCLE_LSN(lsn1) != CYCLE_LSN(lsn2)) |
| return (CYCLE_LSN(lsn1)<CYCLE_LSN(lsn2))? -999 : 999; |
| |
| if (BLOCK_LSN(lsn1) != BLOCK_LSN(lsn2)) |
| return (BLOCK_LSN(lsn1)<BLOCK_LSN(lsn2))? -999 : 999; |
| |
| return 0; |
| } |
| |
| #define XFS_LSN_CMP(a, b) _lsn_cmp(a, b) |
| |
| #endif /* __XFS_TRANS_H__ */ |