xfs_trans.h 9.3 KB
Newer Older
L
Linus Torvalds 已提交
1
/*
2 3
 * Copyright (c) 2000-2002,2005 Silicon Graphics, Inc.
 * All Rights Reserved.
L
Linus Torvalds 已提交
4
 *
5 6
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
L
Linus Torvalds 已提交
7 8
 * published by the Free Software Foundation.
 *
9 10 11 12
 * 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.
L
Linus Torvalds 已提交
13
 *
14 15 16
 * 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
L
Linus Torvalds 已提交
17 18 19 20
 */
#ifndef	__XFS_TRANS_H__
#define	__XFS_TRANS_H__

21
/* kernel only transaction subsystem defines */
22 23 24 25 26 27 28 29 30 31 32

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;
33
struct xfs_trans_res;
34
struct xfs_dquot_acct;
35
struct xfs_busy_extent;
36 37
struct xfs_rud_log_item;
struct xfs_rui_log_item;
38
struct xfs_btree_cur;
D
Darrick J. Wong 已提交
39
struct xfs_cui_log_item;
40 41 42 43 44 45

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 */
46
	struct xfs_ail			*li_ailp;	/* ptr to AIL */
47 48 49 50 51 52 53
	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 */
C
Christoph Hellwig 已提交
54
	const struct xfs_item_ops	*li_ops;	/* function list */
55 56 57 58

	/* delayed logging */
	struct list_head		li_cil;		/* CIL pointers */
	struct xfs_log_vec		*li_lv;		/* active log vector */
59
	struct xfs_log_vec		*li_lv_shadow;	/* standby vector */
60
	xfs_lsn_t			li_seq;		/* CIL commit seq */
61 62 63 64 65
} xfs_log_item_t;

#define	XFS_LI_IN_AIL	0x1
#define XFS_LI_ABORTED	0x2

C
Christoph Hellwig 已提交
66 67 68 69
#define XFS_LI_FLAGS \
	{ XFS_LI_IN_AIL,	"IN_AIL" }, \
	{ XFS_LI_ABORTED,	"ABORTED" }

C
Christoph Hellwig 已提交
70
struct xfs_item_ops {
71
	void (*iop_size)(xfs_log_item_t *, int *, int *);
72
	void (*iop_format)(xfs_log_item_t *, struct xfs_log_vec *);
73
	void (*iop_pin)(xfs_log_item_t *);
74
	void (*iop_unpin)(xfs_log_item_t *, int remove);
75
	uint (*iop_push)(struct xfs_log_item *, struct list_head *);
76 77 78
	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);
C
Christoph Hellwig 已提交
79
};
80

81 82 83
void	xfs_log_item_init(struct xfs_mount *mp, struct xfs_log_item *item,
			  int type, const struct xfs_item_ops *ops);

84
/*
85
 * Return values for the iop_push() routines.
86
 */
87 88 89 90
#define XFS_ITEM_SUCCESS	0
#define XFS_ITEM_PINNED		1
#define XFS_ITEM_LOCKED		2
#define XFS_ITEM_FLUSHING	3
91

92

93 94 95 96 97 98 99 100 101 102 103
/*
 * This is the structure maintained for every active transaction.
 */
typedef struct xfs_trans {
	unsigned int		t_magic;	/* magic number */
	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 */
104
	struct xlog_ticket	*t_ticket;	/* log mgr ticket */
105 106 107 108 109 110 111 112 113 114 115 116 117
	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 */
D
Dave Chinner 已提交
118
#if defined(DEBUG) || defined(XFS_WARN)
119 120 121 122 123 124 125 126 127 128 129 130
	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 */
131
	struct list_head	t_items;	/* log item descriptors */
132
	struct list_head	t_busy;		/* list of busy extents */
133 134 135
	unsigned long		t_pflags;	/* saved process flags state */
} xfs_trans_t;

L
Linus Torvalds 已提交
136 137 138 139 140 141
/*
 * XFS transaction mechanism exported interfaces that are
 * actually macros.
 */
#define	xfs_trans_set_sync(tp)		((tp)->t_flags |= XFS_TRANS_SYNC)

D
Dave Chinner 已提交
142
#if defined(DEBUG) || defined(XFS_WARN)
143 144 145
#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)
L
Linus Torvalds 已提交
146 147 148 149 150 151 152 153 154
#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.
 */
155 156 157
int		xfs_trans_alloc(struct xfs_mount *mp, struct xfs_trans_res *resp,
			uint blocks, uint rtextents, uint flags,
			struct xfs_trans **tpp);
158
void		xfs_trans_mod_sb(xfs_trans_t *, uint, int64_t);
159 160 161 162 163 164 165 166 167 168 169 170 171 172

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)
{
173
	DEFINE_SINGLE_BUF_MAP(map, blkno, numblks);
174 175 176 177 178 179 180 181
	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,
182
				       struct xfs_buf **bpp,
183
				       const struct xfs_buf_ops *ops);
184 185 186 187 188 189 190 191 192

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,
193
	struct xfs_buf		**bpp,
194
	const struct xfs_buf_ops *ops)
195
{
196 197
	DEFINE_SINGLE_BUF_MAP(map, blkno, numblks);
	return xfs_trans_read_buf_map(mp, tp, target, &map, 1,
198
				      flags, bpp, ops);
199 200
}

L
Linus Torvalds 已提交
201 202 203 204 205
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 *);
206
void		xfs_trans_bhold_release(xfs_trans_t *, struct xfs_buf *);
L
Linus Torvalds 已提交
207 208 209
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 *);
210
void		xfs_trans_ordered_buf(xfs_trans_t *, struct xfs_buf *);
L
Linus Torvalds 已提交
211 212
void		xfs_trans_dquot_buf(xfs_trans_t *, struct xfs_buf *, uint);
void		xfs_trans_inode_alloc_buf(xfs_trans_t *, struct xfs_buf *);
213
void		xfs_trans_ichgtime(struct xfs_trans *, struct xfs_inode *, int);
214
void		xfs_trans_ijoin(struct xfs_trans *, struct xfs_inode *, uint);
L
Linus Torvalds 已提交
215 216
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);
217 218

void		xfs_extent_free_init_defer_op(void);
219
struct xfs_efd_log_item	*xfs_trans_get_efd(struct xfs_trans *,
L
Linus Torvalds 已提交
220 221
				  struct xfs_efi_log_item *,
				  uint);
222 223
int		xfs_trans_free_extent(struct xfs_trans *,
				      struct xfs_efd_log_item *, xfs_fsblock_t,
224
				      xfs_extlen_t, struct xfs_owner_info *);
225
int		xfs_trans_commit(struct xfs_trans *);
226
int		__xfs_trans_roll(struct xfs_trans **, struct xfs_inode *, int *);
227
int		xfs_trans_roll(struct xfs_trans **, struct xfs_inode *);
228
void		xfs_trans_cancel(xfs_trans_t *);
229 230
int		xfs_trans_ail_init(struct xfs_mount *);
void		xfs_trans_ail_destroy(struct xfs_mount *);
L
Linus Torvalds 已提交
231

232 233 234 235 236
void		xfs_trans_buf_set_type(struct xfs_trans *, struct xfs_buf *,
				       enum xfs_blft);
void		xfs_trans_buf_copy_type(struct xfs_buf *dst_bp,
					struct xfs_buf *src_bp);

D
David Chinner 已提交
237
extern kmem_zone_t	*xfs_trans_zone;
238
extern kmem_zone_t	*xfs_log_item_desc_zone;
D
David Chinner 已提交
239

240
/* rmap updates */
D
Darrick J. Wong 已提交
241 242
enum xfs_rmap_intent_type;

243
void xfs_rmap_update_init_defer_op(void);
D
Darrick J. Wong 已提交
244
struct xfs_rud_log_item *xfs_trans_get_rud(struct xfs_trans *tp,
245
		struct xfs_rui_log_item *ruip);
D
Darrick J. Wong 已提交
246 247 248 249
int xfs_trans_log_finish_rmap_update(struct xfs_trans *tp,
		struct xfs_rud_log_item *rudp, enum xfs_rmap_intent_type type,
		__uint64_t owner, int whichfork, xfs_fileoff_t startoff,
		xfs_fsblock_t startblock, xfs_filblks_t blockcount,
250
		xfs_exntst_t state, struct xfs_btree_cur **pcur);
D
Darrick J. Wong 已提交
251

D
Darrick J. Wong 已提交
252 253 254 255 256 257 258 259 260 261
/* refcount updates */
enum xfs_refcount_intent_type;

struct xfs_cud_log_item *xfs_trans_get_cud(struct xfs_trans *tp,
		struct xfs_cui_log_item *cuip);
int xfs_trans_log_finish_refcount_update(struct xfs_trans *tp,
		struct xfs_cud_log_item *cudp,
		enum xfs_refcount_intent_type type, xfs_fsblock_t startblock,
		xfs_extlen_t blockcount, struct xfs_btree_cur **pcur);

L
Linus Torvalds 已提交
262
#endif	/* __XFS_TRANS_H__ */