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v3.15
 
  1/*
  2 * Copyright (c) 2000-2002,2005 Silicon Graphics, Inc.
  3 * All Rights Reserved.
  4 *
  5 * This program is free software; you can redistribute it and/or
  6 * modify it under the terms of the GNU General Public License as
  7 * published by the Free Software Foundation.
  8 *
  9 * This program is distributed in the hope that it would be useful,
 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 12 * GNU General Public License for more details.
 13 *
 14 * You should have received a copy of the GNU General Public License
 15 * along with this program; if not, write the Free Software Foundation,
 16 * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 17 */
 18#ifndef	__XFS_TRANS_H__
 19#define	__XFS_TRANS_H__
 20
 21/* kernel only transaction subsystem defines */
 22
 
 23struct xfs_buf;
 24struct xfs_buftarg;
 25struct xfs_efd_log_item;
 26struct xfs_efi_log_item;
 27struct xfs_inode;
 28struct xfs_item_ops;
 29struct xfs_log_iovec;
 30struct xfs_log_item_desc;
 31struct xfs_mount;
 32struct xfs_trans;
 33struct xfs_trans_res;
 34struct xfs_dquot_acct;
 35struct xfs_busy_extent;
 
 
 
 
 
 
 36
 37typedef struct xfs_log_item {
 38	struct list_head		li_ail;		/* AIL pointers */
 
 39	xfs_lsn_t			li_lsn;		/* last on-disk lsn */
 40	struct xfs_log_item_desc	*li_desc;	/* ptr to current desc*/
 41	struct xfs_mount		*li_mountp;	/* ptr to fs mount */
 42	struct xfs_ail			*li_ailp;	/* ptr to AIL */
 43	uint				li_type;	/* item type */
 44	uint				li_flags;	/* misc flags */
 45	struct xfs_log_item		*li_bio_list;	/* buffer item list */
 46	void				(*li_cb)(struct xfs_buf *,
 47						 struct xfs_log_item *);
 48							/* buffer item iodone */
 49							/* callback func */
 50	const struct xfs_item_ops	*li_ops;	/* function list */
 51
 52	/* delayed logging */
 53	struct list_head		li_cil;		/* CIL pointers */
 54	struct xfs_log_vec		*li_lv;		/* active log vector */
 55	xfs_lsn_t			li_seq;		/* CIL commit seq */
 56} xfs_log_item_t;
 
 
 57
 58#define	XFS_LI_IN_AIL	0x1
 59#define XFS_LI_ABORTED	0x2
 
 
 
 
 
 
 
 
 
 60
 61#define XFS_LI_FLAGS \
 62	{ XFS_LI_IN_AIL,	"IN_AIL" }, \
 63	{ XFS_LI_ABORTED,	"ABORTED" }
 
 
 
 
 64
 65struct xfs_item_ops {
 66	void (*iop_size)(xfs_log_item_t *, int *, int *);
 67	void (*iop_format)(xfs_log_item_t *, struct xfs_log_vec *);
 68	void (*iop_pin)(xfs_log_item_t *);
 69	void (*iop_unpin)(xfs_log_item_t *, int remove);
 
 
 
 
 
 70	uint (*iop_push)(struct xfs_log_item *, struct list_head *);
 71	void (*iop_unlock)(xfs_log_item_t *);
 72	xfs_lsn_t (*iop_committed)(xfs_log_item_t *, xfs_lsn_t);
 73	void (*iop_committing)(xfs_log_item_t *, xfs_lsn_t);
 74};
 75
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 76void	xfs_log_item_init(struct xfs_mount *mp, struct xfs_log_item *item,
 77			  int type, const struct xfs_item_ops *ops);
 78
 79/*
 80 * Return values for the iop_push() routines.
 81 */
 82#define XFS_ITEM_SUCCESS	0
 83#define XFS_ITEM_PINNED		1
 84#define XFS_ITEM_LOCKED		2
 85#define XFS_ITEM_FLUSHING	3
 86
 87
 88/*
 89 * This is the structure maintained for every active transaction.
 90 */
 91typedef struct xfs_trans {
 92	unsigned int		t_magic;	/* magic number */
 93	unsigned int		t_type;		/* transaction type */
 94	unsigned int		t_log_res;	/* amt of log space resvd */
 95	unsigned int		t_log_count;	/* count for perm log res */
 96	unsigned int		t_blk_res;	/* # of blocks resvd */
 97	unsigned int		t_blk_res_used;	/* # of resvd blocks used */
 98	unsigned int		t_rtx_res;	/* # of rt extents resvd */
 99	unsigned int		t_rtx_res_used;	/* # of resvd rt extents used */
 
 
100	struct xlog_ticket	*t_ticket;	/* log mgr ticket */
101	xfs_lsn_t		t_lsn;		/* log seq num of start of
102						 * transaction. */
103	xfs_lsn_t		t_commit_lsn;	/* log seq num of end of
104						 * transaction. */
105	struct xfs_mount	*t_mountp;	/* ptr to fs mount struct */
106	struct xfs_dquot_acct   *t_dqinfo;	/* acctg info for dquots */
107	unsigned int		t_flags;	/* misc flags */
108	int64_t			t_icount_delta;	/* superblock icount change */
109	int64_t			t_ifree_delta;	/* superblock ifree change */
110	int64_t			t_fdblocks_delta; /* superblock fdblocks chg */
111	int64_t			t_res_fdblocks_delta; /* on-disk only chg */
112	int64_t			t_frextents_delta;/* superblock freextents chg*/
113	int64_t			t_res_frextents_delta; /* on-disk only chg */
114#if defined(DEBUG) || defined(XFS_WARN)
115	int64_t			t_ag_freeblks_delta; /* debugging counter */
116	int64_t			t_ag_flist_delta; /* debugging counter */
117	int64_t			t_ag_btree_delta; /* debugging counter */
118#endif
119	int64_t			t_dblocks_delta;/* superblock dblocks change */
120	int64_t			t_agcount_delta;/* superblock agcount change */
121	int64_t			t_imaxpct_delta;/* superblock imaxpct change */
122	int64_t			t_rextsize_delta;/* superblock rextsize chg */
123	int64_t			t_rbmblocks_delta;/* superblock rbmblocks chg */
124	int64_t			t_rblocks_delta;/* superblock rblocks change */
125	int64_t			t_rextents_delta;/* superblocks rextents chg */
126	int64_t			t_rextslog_delta;/* superblocks rextslog chg */
 
127	struct list_head	t_items;	/* log item descriptors */
128	struct list_head	t_busy;		/* list of busy extents */
 
129	unsigned long		t_pflags;	/* saved process flags state */
130} xfs_trans_t;
131
132/*
133 * XFS transaction mechanism exported interfaces that are
134 * actually macros.
135 */
136#define	xfs_trans_get_log_res(tp)	((tp)->t_log_res)
137#define	xfs_trans_get_log_count(tp)	((tp)->t_log_count)
138#define	xfs_trans_get_block_res(tp)	((tp)->t_blk_res)
139#define	xfs_trans_set_sync(tp)		((tp)->t_flags |= XFS_TRANS_SYNC)
140
141#if defined(DEBUG) || defined(XFS_WARN)
142#define	xfs_trans_agblocks_delta(tp, d)	((tp)->t_ag_freeblks_delta += (int64_t)d)
143#define	xfs_trans_agflist_delta(tp, d)	((tp)->t_ag_flist_delta += (int64_t)d)
144#define	xfs_trans_agbtree_delta(tp, d)	((tp)->t_ag_btree_delta += (int64_t)d)
145#else
146#define	xfs_trans_agblocks_delta(tp, d)
147#define	xfs_trans_agflist_delta(tp, d)
148#define	xfs_trans_agbtree_delta(tp, d)
149#endif
150
151/*
152 * XFS transaction mechanism exported interfaces.
153 */
154xfs_trans_t	*xfs_trans_alloc(struct xfs_mount *, uint);
155xfs_trans_t	*_xfs_trans_alloc(struct xfs_mount *, uint, xfs_km_flags_t);
156xfs_trans_t	*xfs_trans_dup(xfs_trans_t *);
157int		xfs_trans_reserve(struct xfs_trans *, struct xfs_trans_res *,
158				  uint, uint);
 
 
159void		xfs_trans_mod_sb(xfs_trans_t *, uint, int64_t);
160
161struct xfs_buf	*xfs_trans_get_buf_map(struct xfs_trans *tp,
162				       struct xfs_buftarg *target,
163				       struct xfs_buf_map *map, int nmaps,
164				       uint flags);
165
166static inline struct xfs_buf *
167xfs_trans_get_buf(
168	struct xfs_trans	*tp,
169	struct xfs_buftarg	*target,
170	xfs_daddr_t		blkno,
171	int			numblks,
172	uint			flags)
 
173{
174	DEFINE_SINGLE_BUF_MAP(map, blkno, numblks);
175	return xfs_trans_get_buf_map(tp, target, &map, 1, flags);
176}
177
178int		xfs_trans_read_buf_map(struct xfs_mount *mp,
179				       struct xfs_trans *tp,
180				       struct xfs_buftarg *target,
181				       struct xfs_buf_map *map, int nmaps,
182				       xfs_buf_flags_t flags,
183				       struct xfs_buf **bpp,
184				       const struct xfs_buf_ops *ops);
185
186static inline int
187xfs_trans_read_buf(
188	struct xfs_mount	*mp,
189	struct xfs_trans	*tp,
190	struct xfs_buftarg	*target,
191	xfs_daddr_t		blkno,
192	int			numblks,
193	xfs_buf_flags_t		flags,
194	struct xfs_buf		**bpp,
195	const struct xfs_buf_ops *ops)
196{
197	DEFINE_SINGLE_BUF_MAP(map, blkno, numblks);
198	return xfs_trans_read_buf_map(mp, tp, target, &map, 1,
199				      flags, bpp, ops);
200}
201
202struct xfs_buf	*xfs_trans_getsb(xfs_trans_t *, struct xfs_mount *, int);
 
203
204void		xfs_trans_brelse(xfs_trans_t *, struct xfs_buf *);
205void		xfs_trans_bjoin(xfs_trans_t *, struct xfs_buf *);
 
206void		xfs_trans_bhold(xfs_trans_t *, struct xfs_buf *);
207void		xfs_trans_bhold_release(xfs_trans_t *, struct xfs_buf *);
208void		xfs_trans_binval(xfs_trans_t *, struct xfs_buf *);
209void		xfs_trans_inode_buf(xfs_trans_t *, struct xfs_buf *);
210void		xfs_trans_stale_inode_buf(xfs_trans_t *, struct xfs_buf *);
211void		xfs_trans_ordered_buf(xfs_trans_t *, struct xfs_buf *);
212void		xfs_trans_dquot_buf(xfs_trans_t *, struct xfs_buf *, uint);
213void		xfs_trans_inode_alloc_buf(xfs_trans_t *, struct xfs_buf *);
214void		xfs_trans_ichgtime(struct xfs_trans *, struct xfs_inode *, int);
215void		xfs_trans_ijoin(struct xfs_trans *, struct xfs_inode *, uint);
216void		xfs_trans_log_buf(xfs_trans_t *, struct xfs_buf *, uint, uint);
217void		xfs_trans_log_inode(xfs_trans_t *, struct xfs_inode *, uint);
218struct xfs_efi_log_item	*xfs_trans_get_efi(xfs_trans_t *, uint);
219void		xfs_efi_release(struct xfs_efi_log_item *, uint);
220void		xfs_trans_log_efi_extent(xfs_trans_t *,
221					 struct xfs_efi_log_item *,
222					 xfs_fsblock_t,
223					 xfs_extlen_t);
224struct xfs_efd_log_item	*xfs_trans_get_efd(xfs_trans_t *,
225				  struct xfs_efi_log_item *,
226				  uint);
227void		xfs_trans_log_efd_extent(xfs_trans_t *,
228					 struct xfs_efd_log_item *,
229					 xfs_fsblock_t,
230					 xfs_extlen_t);
231int		xfs_trans_commit(xfs_trans_t *, uint flags);
232int		xfs_trans_roll(struct xfs_trans **, struct xfs_inode *);
233void		xfs_trans_cancel(xfs_trans_t *, int);
 
234int		xfs_trans_ail_init(struct xfs_mount *);
235void		xfs_trans_ail_destroy(struct xfs_mount *);
236
237void		xfs_trans_buf_set_type(struct xfs_trans *, struct xfs_buf *,
238				       enum xfs_blft);
239void		xfs_trans_buf_copy_type(struct xfs_buf *dst_bp,
240					struct xfs_buf *src_bp);
241
242extern kmem_zone_t	*xfs_trans_zone;
243extern kmem_zone_t	*xfs_log_item_desc_zone;
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
244
245#endif	/* __XFS_TRANS_H__ */
v6.13.7
  1// SPDX-License-Identifier: GPL-2.0
  2/*
  3 * Copyright (c) 2000-2002,2005 Silicon Graphics, Inc.
  4 * All Rights Reserved.
 
 
 
 
 
 
 
 
 
 
 
 
 
  5 */
  6#ifndef	__XFS_TRANS_H__
  7#define	__XFS_TRANS_H__
  8
  9/* kernel only transaction subsystem defines */
 10
 11struct xlog;
 12struct xfs_buf;
 13struct xfs_buftarg;
 14struct xfs_efd_log_item;
 15struct xfs_efi_log_item;
 16struct xfs_inode;
 17struct xfs_item_ops;
 18struct xfs_log_iovec;
 
 19struct xfs_mount;
 20struct xfs_trans;
 21struct xfs_trans_res;
 22struct xfs_dquot_acct;
 23struct xfs_rud_log_item;
 24struct xfs_rui_log_item;
 25struct xfs_btree_cur;
 26struct xfs_cui_log_item;
 27struct xfs_cud_log_item;
 28struct xfs_bui_log_item;
 29struct xfs_bud_log_item;
 30
 31struct xfs_log_item {
 32	struct list_head		li_ail;		/* AIL pointers */
 33	struct list_head		li_trans;	/* transaction list */
 34	xfs_lsn_t			li_lsn;		/* last on-disk lsn */
 35	struct xlog			*li_log;
 
 36	struct xfs_ail			*li_ailp;	/* ptr to AIL */
 37	uint				li_type;	/* item type */
 38	unsigned long			li_flags;	/* misc flags */
 39	struct xfs_buf			*li_buf;	/* real buffer pointer */
 40	struct list_head		li_bio_list;	/* buffer item list */
 
 
 
 41	const struct xfs_item_ops	*li_ops;	/* function list */
 42
 43	/* delayed logging */
 44	struct list_head		li_cil;		/* CIL pointers */
 45	struct xfs_log_vec		*li_lv;		/* active log vector */
 46	struct xfs_log_vec		*li_lv_shadow;	/* standby vector */
 47	xfs_csn_t			li_seq;		/* CIL commit seq */
 48	uint32_t			li_order_id;	/* CIL commit order */
 49};
 50
 51/*
 52 * li_flags use the (set/test/clear)_bit atomic interfaces because updates can
 53 * race with each other and we don't want to have to use the AIL lock to
 54 * serialise all updates.
 55 */
 56#define	XFS_LI_IN_AIL	0
 57#define	XFS_LI_ABORTED	1
 58#define	XFS_LI_FAILED	2
 59#define	XFS_LI_DIRTY	3
 60#define	XFS_LI_WHITEOUT	4
 61#define	XFS_LI_FLUSHING	5
 62
 63#define XFS_LI_FLAGS \
 64	{ (1u << XFS_LI_IN_AIL),	"IN_AIL" }, \
 65	{ (1u << XFS_LI_ABORTED),	"ABORTED" }, \
 66	{ (1u << XFS_LI_FAILED),	"FAILED" }, \
 67	{ (1u << XFS_LI_DIRTY),		"DIRTY" }, \
 68	{ (1u << XFS_LI_WHITEOUT),	"WHITEOUT" }, \
 69	{ (1u << XFS_LI_FLUSHING),	"FLUSHING" }
 70
 71struct xfs_item_ops {
 72	unsigned flags;
 73	void (*iop_size)(struct xfs_log_item *, int *, int *);
 74	void (*iop_format)(struct xfs_log_item *, struct xfs_log_vec *);
 75	void (*iop_pin)(struct xfs_log_item *);
 76	void (*iop_unpin)(struct xfs_log_item *, int remove);
 77	uint64_t (*iop_sort)(struct xfs_log_item *lip);
 78	int (*iop_precommit)(struct xfs_trans *tp, struct xfs_log_item *lip);
 79	void (*iop_committing)(struct xfs_log_item *lip, xfs_csn_t seq);
 80	xfs_lsn_t (*iop_committed)(struct xfs_log_item *, xfs_lsn_t);
 81	uint (*iop_push)(struct xfs_log_item *, struct list_head *);
 82	void (*iop_release)(struct xfs_log_item *);
 83	bool (*iop_match)(struct xfs_log_item *item, uint64_t id);
 84	struct xfs_log_item *(*iop_intent)(struct xfs_log_item *intent_done);
 85};
 86
 87/*
 88 * Log item ops flags
 89 */
 90/*
 91 * Release the log item when the journal commits instead of inserting into the
 92 * AIL for writeback tracking and/or log tail pinning.
 93 */
 94#define XFS_ITEM_RELEASE_WHEN_COMMITTED	(1 << 0)
 95#define XFS_ITEM_INTENT			(1 << 1)
 96#define XFS_ITEM_INTENT_DONE		(1 << 2)
 97
 98static inline bool
 99xlog_item_is_intent(struct xfs_log_item *lip)
100{
101	return lip->li_ops->flags & XFS_ITEM_INTENT;
102}
103
104static inline bool
105xlog_item_is_intent_done(struct xfs_log_item *lip)
106{
107	return lip->li_ops->flags & XFS_ITEM_INTENT_DONE;
108}
109
110void	xfs_log_item_init(struct xfs_mount *mp, struct xfs_log_item *item,
111			  int type, const struct xfs_item_ops *ops);
112
113/*
114 * Return values for the iop_push() routines.
115 */
116#define XFS_ITEM_SUCCESS	0
117#define XFS_ITEM_PINNED		1
118#define XFS_ITEM_LOCKED		2
119#define XFS_ITEM_FLUSHING	3
120
 
121/*
122 * This is the structure maintained for every active transaction.
123 */
124typedef struct xfs_trans {
125	unsigned int		t_magic;	/* magic number */
 
126	unsigned int		t_log_res;	/* amt of log space resvd */
127	unsigned int		t_log_count;	/* count for perm log res */
128	unsigned int		t_blk_res;	/* # of blocks resvd */
129	unsigned int		t_blk_res_used;	/* # of resvd blocks used */
130	unsigned int		t_rtx_res;	/* # of rt extents resvd */
131	unsigned int		t_rtx_res_used;	/* # of resvd rt extents used */
132	unsigned int		t_flags;	/* misc flags */
133	xfs_agnumber_t		t_highest_agno;	/* highest AGF locked */
134	struct xlog_ticket	*t_ticket;	/* log mgr ticket */
 
 
 
 
135	struct xfs_mount	*t_mountp;	/* ptr to fs mount struct */
136	struct xfs_dquot_acct   *t_dqinfo;	/* acctg info for dquots */
 
137	int64_t			t_icount_delta;	/* superblock icount change */
138	int64_t			t_ifree_delta;	/* superblock ifree change */
139	int64_t			t_fdblocks_delta; /* superblock fdblocks chg */
140	int64_t			t_res_fdblocks_delta; /* on-disk only chg */
141	int64_t			t_frextents_delta;/* superblock freextents chg*/
142	int64_t			t_res_frextents_delta; /* on-disk only chg */
 
 
 
 
 
143	int64_t			t_dblocks_delta;/* superblock dblocks change */
144	int64_t			t_agcount_delta;/* superblock agcount change */
145	int64_t			t_imaxpct_delta;/* superblock imaxpct change */
146	int64_t			t_rextsize_delta;/* superblock rextsize chg */
147	int64_t			t_rbmblocks_delta;/* superblock rbmblocks chg */
148	int64_t			t_rblocks_delta;/* superblock rblocks change */
149	int64_t			t_rextents_delta;/* superblocks rextents chg */
150	int64_t			t_rextslog_delta;/* superblocks rextslog chg */
151	int64_t			t_rgcount_delta; /* realtime group count */
152	struct list_head	t_items;	/* log item descriptors */
153	struct list_head	t_busy;		/* list of busy extents */
154	struct list_head	t_dfops;	/* deferred operations */
155	unsigned long		t_pflags;	/* saved process flags state */
156} xfs_trans_t;
157
158/*
159 * XFS transaction mechanism exported interfaces that are
160 * actually macros.
161 */
 
 
 
162#define	xfs_trans_set_sync(tp)		((tp)->t_flags |= XFS_TRANS_SYNC)
163
 
 
 
 
 
 
 
 
 
 
164/*
165 * XFS transaction mechanism exported interfaces.
166 */
167int		xfs_trans_alloc(struct xfs_mount *mp, struct xfs_trans_res *resp,
168			uint blocks, uint rtextents, uint flags,
169			struct xfs_trans **tpp);
170int		xfs_trans_reserve_more(struct xfs_trans *tp,
171			unsigned int blocks, unsigned int rtextents);
172int		xfs_trans_alloc_empty(struct xfs_mount *mp,
173			struct xfs_trans **tpp);
174void		xfs_trans_mod_sb(xfs_trans_t *, uint, int64_t);
175
176int xfs_trans_get_buf_map(struct xfs_trans *tp, struct xfs_buftarg *target,
177		struct xfs_buf_map *map, int nmaps, xfs_buf_flags_t flags,
178		struct xfs_buf **bpp);
 
179
180static inline int
181xfs_trans_get_buf(
182	struct xfs_trans	*tp,
183	struct xfs_buftarg	*target,
184	xfs_daddr_t		blkno,
185	int			numblks,
186	xfs_buf_flags_t		flags,
187	struct xfs_buf		**bpp)
188{
189	DEFINE_SINGLE_BUF_MAP(map, blkno, numblks);
190	return xfs_trans_get_buf_map(tp, target, &map, 1, flags, bpp);
191}
192
193int		xfs_trans_read_buf_map(struct xfs_mount *mp,
194				       struct xfs_trans *tp,
195				       struct xfs_buftarg *target,
196				       struct xfs_buf_map *map, int nmaps,
197				       xfs_buf_flags_t flags,
198				       struct xfs_buf **bpp,
199				       const struct xfs_buf_ops *ops);
200
201static inline int
202xfs_trans_read_buf(
203	struct xfs_mount	*mp,
204	struct xfs_trans	*tp,
205	struct xfs_buftarg	*target,
206	xfs_daddr_t		blkno,
207	int			numblks,
208	xfs_buf_flags_t		flags,
209	struct xfs_buf		**bpp,
210	const struct xfs_buf_ops *ops)
211{
212	DEFINE_SINGLE_BUF_MAP(map, blkno, numblks);
213	return xfs_trans_read_buf_map(mp, tp, target, &map, 1,
214				      flags, bpp, ops);
215}
216
217struct xfs_buf	*xfs_trans_getsb(struct xfs_trans *);
218struct xfs_buf	*xfs_trans_getrtsb(struct xfs_trans *tp);
219
220void		xfs_trans_brelse(xfs_trans_t *, struct xfs_buf *);
221void		xfs_trans_bjoin(xfs_trans_t *, struct xfs_buf *);
222void		xfs_trans_bdetach(struct xfs_trans *tp, struct xfs_buf *bp);
223void		xfs_trans_bhold(xfs_trans_t *, struct xfs_buf *);
224void		xfs_trans_bhold_release(xfs_trans_t *, struct xfs_buf *);
225void		xfs_trans_binval(xfs_trans_t *, struct xfs_buf *);
226void		xfs_trans_inode_buf(xfs_trans_t *, struct xfs_buf *);
227void		xfs_trans_stale_inode_buf(xfs_trans_t *, struct xfs_buf *);
228bool		xfs_trans_ordered_buf(xfs_trans_t *, struct xfs_buf *);
229void		xfs_trans_dquot_buf(xfs_trans_t *, struct xfs_buf *, uint);
230void		xfs_trans_inode_alloc_buf(xfs_trans_t *, struct xfs_buf *);
 
231void		xfs_trans_ijoin(struct xfs_trans *, struct xfs_inode *, uint);
232void		xfs_trans_log_buf(struct xfs_trans *, struct xfs_buf *, uint,
 
 
 
 
 
 
 
 
 
233				  uint);
234void		xfs_trans_dirty_buf(struct xfs_trans *, struct xfs_buf *);
235bool		xfs_trans_buf_is_dirty(struct xfs_buf *bp);
236void		xfs_trans_log_inode(xfs_trans_t *, struct xfs_inode *, uint);
237
238int		xfs_trans_commit(struct xfs_trans *);
239int		xfs_trans_roll(struct xfs_trans **);
240int		xfs_trans_roll_inode(struct xfs_trans **, struct xfs_inode *);
241void		xfs_trans_cancel(xfs_trans_t *);
242int		xfs_trans_ail_init(struct xfs_mount *);
243void		xfs_trans_ail_destroy(struct xfs_mount *);
244
245void		xfs_trans_buf_set_type(struct xfs_trans *, struct xfs_buf *,
246				       enum xfs_blft);
247void		xfs_trans_buf_copy_type(struct xfs_buf *dst_bp,
248					struct xfs_buf *src_bp);
249
250extern struct kmem_cache	*xfs_trans_cache;
251
252struct xfs_dquot;
253
254int xfs_trans_alloc_inode(struct xfs_inode *ip, struct xfs_trans_res *resv,
255		unsigned int dblocks, unsigned int rblocks, bool force,
256		struct xfs_trans **tpp);
257int xfs_trans_reserve_more_inode(struct xfs_trans *tp, struct xfs_inode *ip,
258		unsigned int dblocks, unsigned int rblocks, bool force_quota);
259int xfs_trans_alloc_icreate(struct xfs_mount *mp, struct xfs_trans_res *resv,
260		struct xfs_dquot *udqp, struct xfs_dquot *gdqp,
261		struct xfs_dquot *pdqp, unsigned int dblocks,
262		struct xfs_trans **tpp);
263int xfs_trans_alloc_ichange(struct xfs_inode *ip, struct xfs_dquot *udqp,
264		struct xfs_dquot *gdqp, struct xfs_dquot *pdqp, bool force,
265		struct xfs_trans **tpp);
266int xfs_trans_alloc_dir(struct xfs_inode *dp, struct xfs_trans_res *resv,
267		struct xfs_inode *ip, unsigned int *dblocks,
268		struct xfs_trans **tpp, int *nospace_error);
269
270static inline void
271xfs_trans_set_context(
272	struct xfs_trans	*tp)
273{
274	tp->t_pflags = memalloc_nofs_save();
275}
276
277static inline void
278xfs_trans_clear_context(
279	struct xfs_trans	*tp)
280{
281	memalloc_nofs_restore(tp->t_pflags);
282}
283
284static inline void
285xfs_trans_switch_context(
286	struct xfs_trans	*old_tp,
287	struct xfs_trans	*new_tp)
288{
289	new_tp->t_pflags = old_tp->t_pflags;
290	old_tp->t_pflags = 0;
291}
292
293#endif	/* __XFS_TRANS_H__ */