[thirdparty/xfsprogs-dev.git] / libxfs / xfs_defer.h

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (C) 2016 Oracle.  All Rights Reserved.
 * Author: Darrick J. Wong <darrick.wong@oracle.com>
 */
#ifndef __XFS_DEFER_H__
#define	__XFS_DEFER_H__

struct xfs_defer_op_type;

/*
 * Header for deferred operation list.
 */
enum xfs_defer_ops_type {
	XFS_DEFER_OPS_TYPE_BMAP,
	XFS_DEFER_OPS_TYPE_REFCOUNT,
	XFS_DEFER_OPS_TYPE_RMAP,
	XFS_DEFER_OPS_TYPE_FREE,
	XFS_DEFER_OPS_TYPE_AGFL_FREE,
	XFS_DEFER_OPS_TYPE_MAX,
};

/*
 * Save a log intent item and a list of extents, so that we can replay
 * whatever action had to happen to the extent list and file the log done
 * item.
 */
struct xfs_defer_pending {
	struct list_head		dfp_list;	/* pending items */
	struct list_head		dfp_work;	/* work items */
	void				*dfp_intent;	/* log intent item */
	void				*dfp_done;	/* log done item */
	unsigned int			dfp_count;	/* # extent items */
	enum xfs_defer_ops_type		dfp_type;
};

void xfs_defer_add(struct xfs_trans *tp, enum xfs_defer_ops_type type,
		struct list_head *h);
int xfs_defer_finish_noroll(struct xfs_trans **tp);
int xfs_defer_finish(struct xfs_trans **tp);
void xfs_defer_cancel(struct xfs_trans *);
void xfs_defer_move(struct xfs_trans *dtp, struct xfs_trans *stp);

/* Description of a deferred type. */
struct xfs_defer_op_type {
	void (*abort_intent)(void *);
	void *(*create_done)(struct xfs_trans *, void *, unsigned int);
	int (*finish_item)(struct xfs_trans *, struct list_head *, void *,
			void **);
	void (*finish_cleanup)(struct xfs_trans *, void *, int);
	void (*cancel_item)(struct list_head *);
	int (*diff_items)(void *, struct list_head *, struct list_head *);
	void *(*create_intent)(struct xfs_trans *, uint);
	void (*log_item)(struct xfs_trans *, void *, struct list_head *);
	unsigned int		max_items;
};

extern const struct xfs_defer_op_type xfs_bmap_update_defer_type;
extern const struct xfs_defer_op_type xfs_refcount_update_defer_type;
extern const struct xfs_defer_op_type xfs_rmap_update_defer_type;
extern const struct xfs_defer_op_type xfs_extent_free_defer_type;
extern const struct xfs_defer_op_type xfs_agfl_free_defer_type;

#endif /* __XFS_DEFER_H__ */
Commit	Line	Data
37b3b4d6	1	// SPDX-License-Identifier: GPL-2.0+
a18e1f79 DW	2	/*
a18e1f79 DW	3	* Copyright (C) 2016 Oracle. All Rights Reserved.
a18e1f79	4	* Author: Darrick J. Wong <darrick.wong@oracle.com>
a18e1f79 DW	5	*/
	6	#ifndef __XFS_DEFER_H__
	7	#define __XFS_DEFER_H__
	8
	9	struct xfs_defer_op_type;
	10
a18e1f79 DW	11	/*
a18e1f79 DW	12	* Header for deferred operation list.
a18e1f79 DW	13	*/
a18e1f79 DW	14	enum xfs_defer_ops_type {
aeb88300	15	XFS_DEFER_OPS_TYPE_BMAP,
23a15a6c	16	XFS_DEFER_OPS_TYPE_REFCOUNT,
589b52d6	17	XFS_DEFER_OPS_TYPE_RMAP,
31a6b02a	18	XFS_DEFER_OPS_TYPE_FREE,
d5c1b462	19	XFS_DEFER_OPS_TYPE_AGFL_FREE,
a18e1f79 DW	20	XFS_DEFER_OPS_TYPE_MAX,
	21	};
	22
c3514397 DW	23	/*
	24	* Save a log intent item and a list of extents, so that we can replay
	25	* whatever action had to happen to the extent list and file the log done
	26	* item.
	27	*/
	28	struct xfs_defer_pending {
	29	struct list_head dfp_list; /* pending items */
	30	struct list_head dfp_work; /* work items */
	31	void dfp_intent; / log intent item */
	32	void dfp_done; / log done item */
	33	unsigned int dfp_count; /* # extent items */
	34	enum xfs_defer_ops_type dfp_type;
	35	};
	36
21375e5d	37	void xfs_defer_add(struct xfs_trans *tp, enum xfs_defer_ops_type type,
a18e1f79	38	struct list_head *h);
ca7e896f	39	int xfs_defer_finish_noroll(struct xfs_trans **tp);
ac0a2228	40	int xfs_defer_finish(struct xfs_trans **tp);
22913550	41	void xfs_defer_cancel(struct xfs_trans *);
76a3c33d	42	void xfs_defer_move(struct xfs_trans dtp, struct xfs_trans stp);
a18e1f79 DW	43
	44	/* Description of a deferred type. */
	45	struct xfs_defer_op_type {
a18e1f79 DW	46	void (abort_intent)(void );
a18e1f79 DW	47	void (create_done)(struct xfs_trans , void , unsigned int);
7b3ab230 BF	48	int (finish_item)(struct xfs_trans , struct list_head , void ,
7b3ab230 BF	49	void **);
a18e1f79 DW	50	void (finish_cleanup)(struct xfs_trans , void *, int);
	51	void (cancel_item)(struct list_head );
	52	int (diff_items)(void , struct list_head , struct list_head );
	53	void (create_intent)(struct xfs_trans *, uint);
	54	void (log_item)(struct xfs_trans , void , struct list_head );
c3514397	55	unsigned int max_items;
a18e1f79 DW	56	};
a18e1f79 DW	57
29ce8c42 DW	58	extern const struct xfs_defer_op_type xfs_bmap_update_defer_type;
	59	extern const struct xfs_defer_op_type xfs_refcount_update_defer_type;
	60	extern const struct xfs_defer_op_type xfs_rmap_update_defer_type;
	61	extern const struct xfs_defer_op_type xfs_extent_free_defer_type;
	62	extern const struct xfs_defer_op_type xfs_agfl_free_defer_type;
a18e1f79 DW	63
a18e1f79 DW	64	#endif /* __XFS_DEFER_H__ */