1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
7 #ifndef __XFS_TRANS_H__
8 #define __XFS_TRANS_H__
16 * Userspace Transaction interface
19 typedef struct xfs_log_item
{
20 struct list_head li_trans
; /* transaction list */
21 xfs_lsn_t li_lsn
; /* last on-disk lsn */
22 struct xfs_mount
*li_mountp
; /* ptr to fs mount */
23 uint li_type
; /* item type */
24 unsigned long li_flags
; /* misc flags */
27 #define XFS_LI_DIRTY 3 /* log item dirty in transaction */
29 typedef struct xfs_inode_log_item
{
30 xfs_log_item_t ili_item
; /* common portion */
31 struct xfs_inode
*ili_inode
; /* inode pointer */
32 unsigned short ili_flags
; /* misc flags */
33 unsigned short ili_lock_flags
; /* lock flags */
34 unsigned int ili_fields
; /* fields to be logged */
35 unsigned int ili_last_fields
; /* fields when flushed*/
36 } xfs_inode_log_item_t
;
38 typedef struct xfs_buf_log_item
{
39 xfs_log_item_t bli_item
; /* common item structure */
40 struct xfs_buf
*bli_buf
; /* real buffer pointer */
41 unsigned int bli_flags
; /* misc flags */
42 unsigned int bli_recur
; /* recursion count */
43 xfs_buf_log_format_t bli_format
; /* in-log header */
46 #define XFS_BLI_DIRTY (1<<0)
47 #define XFS_BLI_HOLD (1<<1)
48 #define XFS_BLI_STALE (1<<2)
49 #define XFS_BLI_INODE_ALLOC_BUF (1<<3)
51 typedef struct xfs_dq_logitem
{
52 xfs_log_item_t qli_item
; /* common portion */
53 struct xfs_dquot
*qli_dquot
; /* dquot ptr */
54 xfs_lsn_t qli_flush_lsn
; /* lsn at last flush */
55 xfs_dq_logformat_t qli_format
; /* logged structure */
58 typedef struct xfs_qoff_logitem
{
59 xfs_log_item_t qql_item
; /* common portion */
60 struct xfs_qoff_logitem
*qql_start_lip
; /* qoff-start logitem, if any */
61 xfs_qoff_logformat_t qql_format
; /* logged structure */
64 #define XFS_DEFER_OPS_NR_INODES 2 /* join up to two inodes */
65 #define XFS_DEFER_OPS_NR_BUFS 2 /* join up to two buffers */
67 struct xfs_defer_ops
{
68 struct list_head dop_intake
; /* unlogged pending work */
69 struct list_head dop_pending
; /* logged pending work */
72 typedef struct xfs_trans
{
73 unsigned int t_type
; /* transaction type */
74 unsigned int t_log_res
; /* amt of log space resvd */
75 unsigned int t_log_count
; /* count for perm log res */
76 unsigned int t_blk_res
; /* # of blocks resvd */
77 xfs_fsblock_t t_firstblock
; /* first block allocated */
78 struct xfs_mount
*t_mountp
; /* ptr to fs mount struct */
79 unsigned int t_blk_res_used
; /* # of resvd blocks used */
80 unsigned int t_flags
; /* misc flags */
81 long t_icount_delta
; /* superblock icount change */
82 long t_ifree_delta
; /* superblock ifree change */
83 long t_fdblocks_delta
; /* superblock fdblocks chg */
84 long t_frextents_delta
; /* superblock freextents chg */
85 struct list_head t_items
; /* first log item desc chunk */
86 struct xfs_defer_ops
*t_dfops
; /* deferred operations */
87 struct xfs_defer_ops t_dfops_internal
;
91 void xfs_trans_init(struct xfs_mount
*);
92 int xfs_trans_roll(struct xfs_trans
**);
94 int libxfs_trans_alloc(struct xfs_mount
*mp
, struct xfs_trans_res
*resp
,
95 uint blocks
, uint rtextents
, uint flags
,
96 struct xfs_trans
**tpp
);
97 int libxfs_trans_alloc_rollable(struct xfs_mount
*mp
, uint blocks
,
98 struct xfs_trans
**tpp
);
99 int libxfs_trans_alloc_empty(struct xfs_mount
*mp
, struct xfs_trans
**tpp
);
100 int libxfs_trans_commit(struct xfs_trans
*);
101 void libxfs_trans_cancel(struct xfs_trans
*);
103 /* cancel dfops associated with a transaction */
104 void xfs_defer_cancel(struct xfs_trans
*);
106 struct xfs_buf
*libxfs_trans_getsb(struct xfs_trans
*, struct xfs_mount
*, int);
108 int libxfs_trans_iget(struct xfs_mount
*, struct xfs_trans
*, xfs_ino_t
,
109 uint
, uint
, struct xfs_inode
**);
110 void libxfs_trans_ijoin(struct xfs_trans
*, struct xfs_inode
*, uint
);
111 void libxfs_trans_ijoin_ref(struct xfs_trans
*, struct xfs_inode
*, int);
112 void libxfs_trans_log_inode (struct xfs_trans
*, struct xfs_inode
*,
114 int libxfs_trans_roll_inode (struct xfs_trans
**, struct xfs_inode
*);
116 void libxfs_trans_brelse(struct xfs_trans
*, struct xfs_buf
*);
117 void libxfs_trans_binval(struct xfs_trans
*, struct xfs_buf
*);
118 void libxfs_trans_bjoin(struct xfs_trans
*, struct xfs_buf
*);
119 void libxfs_trans_bhold(struct xfs_trans
*, struct xfs_buf
*);
120 void libxfs_trans_dirty_buf(struct xfs_trans
*, struct xfs_buf
*);
121 void libxfs_trans_log_buf(struct xfs_trans
*, struct xfs_buf
*,
123 bool libxfs_trans_ordered_buf(xfs_trans_t
*, struct xfs_buf
*);
125 struct xfs_buf
*libxfs_trans_get_buf_map(struct xfs_trans
*tp
,
126 struct xfs_buftarg
*btp
,
127 struct xfs_buf_map
*map
, int nmaps
,
130 int libxfs_trans_read_buf_map(struct xfs_mount
*mp
, struct xfs_trans
*tp
,
131 struct xfs_buftarg
*btp
,
132 struct xfs_buf_map
*map
, int nmaps
,
133 uint flags
, struct xfs_buf
**bpp
,
134 const struct xfs_buf_ops
*ops
);
135 static inline struct xfs_buf
*
136 libxfs_trans_get_buf(
137 struct xfs_trans
*tp
,
138 struct xfs_buftarg
*btp
,
143 DEFINE_SINGLE_BUF_MAP(map
, blkno
, numblks
);
144 return libxfs_trans_get_buf_map(tp
, btp
, &map
, 1, flags
);
148 libxfs_trans_read_buf(
149 struct xfs_mount
*mp
,
150 struct xfs_trans
*tp
,
151 struct xfs_buftarg
*btp
,
155 struct xfs_buf
**bpp
,
156 const struct xfs_buf_ops
*ops
)
158 DEFINE_SINGLE_BUF_MAP(map
, blkno
, numblks
);
159 return libxfs_trans_read_buf_map(mp
, tp
, btp
, &map
, 1, flags
, bpp
, ops
);
162 void xfs_extent_free_init_defer_op(void);
163 void xfs_rmap_update_init_defer_op(void);
164 void xfs_refcount_update_init_defer_op(void);
165 void xfs_bmap_update_init_defer_op(void);
167 #endif /* __XFS_TRANS_H__ */