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_ALLOC_H__
  7#define	__XFS_ALLOC_H__
  8
  9struct xfs_buf;
 10struct xfs_btree_cur;
 11struct xfs_mount;
 12struct xfs_perag;
 13struct xfs_trans;
 14
 15extern struct workqueue_struct *xfs_alloc_wq;
 16
 17unsigned int xfs_agfl_size(struct xfs_mount *mp);
 18
 19/*
 20 * Freespace allocation types.  Argument to xfs_alloc_[v]extent.
 21 */
 22#define XFS_ALLOCTYPE_FIRST_AG	0x02	/* ... start at ag 0 */
 23#define XFS_ALLOCTYPE_THIS_AG	0x08	/* anywhere in this a.g. */
 24#define XFS_ALLOCTYPE_START_BNO	0x10	/* near this block else anywhere */
 25#define XFS_ALLOCTYPE_NEAR_BNO	0x20	/* in this a.g. and near this block */
 26#define XFS_ALLOCTYPE_THIS_BNO	0x40	/* at exactly this block */
 27
 28/* this should become an enum again when the tracing code is fixed */
 29typedef unsigned int xfs_alloctype_t;
 30
 31#define XFS_ALLOC_TYPES \
 32	{ XFS_ALLOCTYPE_FIRST_AG,	"FIRST_AG" }, \
 33	{ XFS_ALLOCTYPE_THIS_AG,	"THIS_AG" }, \
 34	{ XFS_ALLOCTYPE_START_BNO,	"START_BNO" }, \
 35	{ XFS_ALLOCTYPE_NEAR_BNO,	"NEAR_BNO" }, \
 36	{ XFS_ALLOCTYPE_THIS_BNO,	"THIS_BNO" }
 37
 38/*
 39 * Flags for xfs_alloc_fix_freelist.
 40 */
 41#define	XFS_ALLOC_FLAG_TRYLOCK	0x00000001  /* use trylock for buffer locking */
 42#define	XFS_ALLOC_FLAG_FREEING	0x00000002  /* indicate caller is freeing extents*/
 43#define	XFS_ALLOC_FLAG_NORMAP	0x00000004  /* don't modify the rmapbt */
 44#define	XFS_ALLOC_FLAG_NOSHRINK	0x00000008  /* don't shrink the freelist */
 45#define	XFS_ALLOC_FLAG_CHECK	0x00000010  /* test only, don't modify args */
 
 46
 47/*
 48 * Argument structure for xfs_alloc routines.
 49 * This is turned into a structure to avoid having 20 arguments passed
 50 * down several levels of the stack.
 51 */
 52typedef struct xfs_alloc_arg {
 53	struct xfs_trans *tp;		/* transaction pointer */
 54	struct xfs_mount *mp;		/* file system mount point */
 55	struct xfs_buf	*agbp;		/* buffer for a.g. freelist header */
 56	struct xfs_perag *pag;		/* per-ag struct for this agno */
 57	xfs_fsblock_t	fsbno;		/* file system block number */
 58	xfs_agnumber_t	agno;		/* allocation group number */
 59	xfs_agblock_t	agbno;		/* allocation group-relative block # */
 60	xfs_extlen_t	minlen;		/* minimum size of extent */
 61	xfs_extlen_t	maxlen;		/* maximum size of extent */
 62	xfs_extlen_t	mod;		/* mod value for extent size */
 63	xfs_extlen_t	prod;		/* prod value for extent size */
 64	xfs_extlen_t	minleft;	/* min blocks must be left after us */
 65	xfs_extlen_t	total;		/* total blocks needed in xaction */
 66	xfs_extlen_t	alignment;	/* align answer to multiple of this */
 67	xfs_extlen_t	minalignslop;	/* slop for minlen+alignment calcs */
 68	xfs_agblock_t	min_agbno;	/* set an agbno range for NEAR allocs */
 69	xfs_agblock_t	max_agbno;	/* ... */
 70	xfs_extlen_t	len;		/* output: actual size of extent */
 71	xfs_alloctype_t	type;		/* allocation type XFS_ALLOCTYPE_... */
 72	xfs_alloctype_t	otype;		/* original allocation type */
 73	int		datatype;	/* mask defining data type treatment */
 74	char		wasdel;		/* set if allocation was prev delayed */
 75	char		wasfromfl;	/* set if allocation is from freelist */
 76	struct xfs_owner_info	oinfo;	/* owner of blocks being allocated */
 77	enum xfs_ag_resv_type	resv;	/* block reservation to use */
 78#ifdef DEBUG
 79	bool		alloc_minlen_only; /* allocate exact minlen extent */
 80#endif
 81} xfs_alloc_arg_t;
 82
 83/*
 84 * Defines for datatype
 85 */
 86#define XFS_ALLOC_USERDATA		(1 << 0)/* allocation is for user data*/
 87#define XFS_ALLOC_INITIAL_USER_DATA	(1 << 1)/* special case start of file */
 88#define XFS_ALLOC_NOBUSY		(1 << 2)/* Busy extents not allowed */
 89
 90/* freespace limit calculations */
 91unsigned int xfs_alloc_set_aside(struct xfs_mount *mp);
 92unsigned int xfs_alloc_ag_max_usable(struct xfs_mount *mp);
 93
 94xfs_extlen_t xfs_alloc_longest_free_extent(struct xfs_perag *pag,
 95		xfs_extlen_t need, xfs_extlen_t reserved);
 96unsigned int xfs_alloc_min_freelist(struct xfs_mount *mp,
 97		struct xfs_perag *pag);
 98int xfs_alloc_get_freelist(struct xfs_perag *pag, struct xfs_trans *tp,
 99		struct xfs_buf *agfbp, xfs_agblock_t *bnop, int	 btreeblk);
100int xfs_alloc_put_freelist(struct xfs_perag *pag, struct xfs_trans *tp,
101		struct xfs_buf *agfbp, struct xfs_buf *agflbp,
102		xfs_agblock_t bno, int btreeblk);
103
104/*
105 * Compute and fill in value of m_alloc_maxlevels.
106 */
107void
108xfs_alloc_compute_maxlevels(
109	struct xfs_mount	*mp);	/* file system mount structure */
110
111/*
112 * Log the given fields from the agf structure.
113 */
114void
115xfs_alloc_log_agf(
116	struct xfs_trans *tp,	/* transaction pointer */
117	struct xfs_buf	*bp,	/* buffer for a.g. freelist header */
118	uint32_t	fields);/* mask of fields to be logged (XFS_AGF_...) */
119
120/*
121 * Allocate an extent (variable-size).
 
122 */
123int				/* error */
124xfs_alloc_vextent(
125	xfs_alloc_arg_t	*args);	/* allocation argument structure */
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
126
127/*
128 * Free an extent.
129 */
130int				/* error */
131__xfs_free_extent(
132	struct xfs_trans	*tp,	/* transaction pointer */
133	xfs_fsblock_t		bno,	/* starting block number of extent */
 
134	xfs_extlen_t		len,	/* length of extent */
135	const struct xfs_owner_info	*oinfo,	/* extent owner */
136	enum xfs_ag_resv_type	type,	/* block reservation type */
137	bool			skip_discard);
138
139static inline int
140xfs_free_extent(
141	struct xfs_trans	*tp,
142	xfs_fsblock_t		bno,
 
143	xfs_extlen_t		len,
144	const struct xfs_owner_info	*oinfo,
145	enum xfs_ag_resv_type	type)
146{
147	return __xfs_free_extent(tp, bno, len, oinfo, type, false);
148}
149
150int				/* error */
151xfs_alloc_lookup_le(
152	struct xfs_btree_cur	*cur,	/* btree cursor */
153	xfs_agblock_t		bno,	/* starting block of extent */
154	xfs_extlen_t		len,	/* length of extent */
155	int			*stat);	/* success/failure */
156
157int				/* error */
158xfs_alloc_lookup_ge(
159	struct xfs_btree_cur	*cur,	/* btree cursor */
160	xfs_agblock_t		bno,	/* starting block of extent */
161	xfs_extlen_t		len,	/* length of extent */
162	int			*stat);	/* success/failure */
163
164int					/* error */
165xfs_alloc_get_rec(
166	struct xfs_btree_cur	*cur,	/* btree cursor */
167	xfs_agblock_t		*bno,	/* output: starting block of extent */
168	xfs_extlen_t		*len,	/* output: length of extent */
169	int			*stat);	/* output: success/failure */
170
 
 
 
 
 
 
171int xfs_read_agf(struct xfs_perag *pag, struct xfs_trans *tp, int flags,
172		struct xfs_buf **agfbpp);
173int xfs_alloc_read_agf(struct xfs_perag *pag, struct xfs_trans *tp, int flags,
174		struct xfs_buf **agfbpp);
175int xfs_alloc_read_agfl(struct xfs_perag *pag, struct xfs_trans *tp,
176		struct xfs_buf **bpp);
177int xfs_free_agfl_block(struct xfs_trans *, xfs_agnumber_t, xfs_agblock_t,
178			struct xfs_buf *, struct xfs_owner_info *);
179int xfs_alloc_fix_freelist(struct xfs_alloc_arg *args, int flags);
180int xfs_free_extent_fix_freelist(struct xfs_trans *tp, struct xfs_perag *pag,
181		struct xfs_buf **agbp);
182
183xfs_extlen_t xfs_prealloc_blocks(struct xfs_mount *mp);
184
185typedef int (*xfs_alloc_query_range_fn)(
186	struct xfs_btree_cur			*cur,
187	const struct xfs_alloc_rec_incore	*rec,
188	void					*priv);
189
190int xfs_alloc_query_range(struct xfs_btree_cur *cur,
191		const struct xfs_alloc_rec_incore *low_rec,
192		const struct xfs_alloc_rec_incore *high_rec,
193		xfs_alloc_query_range_fn fn, void *priv);
194int xfs_alloc_query_all(struct xfs_btree_cur *cur, xfs_alloc_query_range_fn fn,
195		void *priv);
196
197int xfs_alloc_has_record(struct xfs_btree_cur *cur, xfs_agblock_t bno,
198		xfs_extlen_t len, bool *exist);
199
200typedef int (*xfs_agfl_walk_fn)(struct xfs_mount *mp, xfs_agblock_t bno,
201		void *priv);
202int xfs_agfl_walk(struct xfs_mount *mp, struct xfs_agf *agf,
203		struct xfs_buf *agflbp, xfs_agfl_walk_fn walk_fn, void *priv);
204
205static inline __be32 *
206xfs_buf_to_agfl_bno(
207	struct xfs_buf		*bp)
208{
209	if (xfs_has_crc(bp->b_mount))
210		return bp->b_addr + sizeof(struct xfs_agfl);
211	return bp->b_addr;
212}
213
214void __xfs_free_extent_later(struct xfs_trans *tp, xfs_fsblock_t bno,
215		xfs_filblks_t len, const struct xfs_owner_info *oinfo,
216		bool skip_discard);
217
218/*
219 * List of extents to be free "later".
220 * The list is kept sorted on xbf_startblock.
221 */
222struct xfs_extent_free_item {
223	struct list_head	xefi_list;
224	uint64_t		xefi_owner;
225	xfs_fsblock_t		xefi_startblock;/* starting fs block number */
226	xfs_extlen_t		xefi_blockcount;/* number of blocks in extent */
 
227	unsigned int		xefi_flags;
 
228};
229
 
 
 
230#define XFS_EFI_SKIP_DISCARD	(1U << 0) /* don't issue discard */
231#define XFS_EFI_ATTR_FORK	(1U << 1) /* freeing attr fork block */
232#define XFS_EFI_BMBT_BLOCK	(1U << 2) /* freeing bmap btree block */
 
233
234static inline void
235xfs_free_extent_later(
236	struct xfs_trans		*tp,
237	xfs_fsblock_t			bno,
238	xfs_filblks_t			len,
239	const struct xfs_owner_info	*oinfo)
240{
241	__xfs_free_extent_later(tp, bno, len, oinfo, false);
242}
243
 
 
 
 
 
 
244
245extern struct kmem_cache	*xfs_extfree_item_cache;
246
247int __init xfs_extfree_intent_init_cache(void);
248void xfs_extfree_intent_destroy_cache(void);
 
 
 
249
250#endif	/* __XFS_ALLOC_H__ */

  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_ALLOC_H__
  7#define	__XFS_ALLOC_H__
  8
  9struct xfs_buf;
 10struct xfs_btree_cur;
 11struct xfs_mount;
 12struct xfs_perag;
 13struct xfs_trans;
 14
 15extern struct workqueue_struct *xfs_alloc_wq;
 16
 17unsigned int xfs_agfl_size(struct xfs_mount *mp);
 18
 19/*
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 20 * Flags for xfs_alloc_fix_freelist.
 21 */
 22#define	XFS_ALLOC_FLAG_TRYLOCK	(1U << 0)  /* use trylock for buffer locking */
 23#define	XFS_ALLOC_FLAG_FREEING	(1U << 1)  /* indicate caller is freeing extents*/
 24#define	XFS_ALLOC_FLAG_NORMAP	(1U << 2)  /* don't modify the rmapbt */
 25#define	XFS_ALLOC_FLAG_NOSHRINK	(1U << 3)  /* don't shrink the freelist */
 26#define	XFS_ALLOC_FLAG_CHECK	(1U << 4)  /* test only, don't modify args */
 27#define	XFS_ALLOC_FLAG_TRYFLUSH	(1U << 5)  /* don't wait in busy extent flush */
 28
 29/*
 30 * Argument structure for xfs_alloc routines.
 31 * This is turned into a structure to avoid having 20 arguments passed
 32 * down several levels of the stack.
 33 */
 34typedef struct xfs_alloc_arg {
 35	struct xfs_trans *tp;		/* transaction pointer */
 36	struct xfs_mount *mp;		/* file system mount point */
 37	struct xfs_buf	*agbp;		/* buffer for a.g. freelist header */
 38	struct xfs_perag *pag;		/* per-ag struct for this agno */
 39	xfs_fsblock_t	fsbno;		/* file system block number */
 40	xfs_agnumber_t	agno;		/* allocation group number */
 41	xfs_agblock_t	agbno;		/* allocation group-relative block # */
 42	xfs_extlen_t	minlen;		/* minimum size of extent */
 43	xfs_extlen_t	maxlen;		/* maximum size of extent */
 44	xfs_extlen_t	mod;		/* mod value for extent size */
 45	xfs_extlen_t	prod;		/* prod value for extent size */
 46	xfs_extlen_t	minleft;	/* min blocks must be left after us */
 47	xfs_extlen_t	total;		/* total blocks needed in xaction */
 48	xfs_extlen_t	alignment;	/* align answer to multiple of this */
 49	xfs_extlen_t	minalignslop;	/* slop for minlen+alignment calcs */
 50	xfs_agblock_t	min_agbno;	/* set an agbno range for NEAR allocs */
 51	xfs_agblock_t	max_agbno;	/* ... */
 52	xfs_extlen_t	len;		/* output: actual size of extent */
 
 
 53	int		datatype;	/* mask defining data type treatment */
 54	char		wasdel;		/* set if allocation was prev delayed */
 55	char		wasfromfl;	/* set if allocation is from freelist */
 56	struct xfs_owner_info	oinfo;	/* owner of blocks being allocated */
 57	enum xfs_ag_resv_type	resv;	/* block reservation to use */
 58#ifdef DEBUG
 59	bool		alloc_minlen_only; /* allocate exact minlen extent */
 60#endif
 61} xfs_alloc_arg_t;
 62
 63/*
 64 * Defines for datatype
 65 */
 66#define XFS_ALLOC_USERDATA		(1 << 0)/* allocation is for user data*/
 67#define XFS_ALLOC_INITIAL_USER_DATA	(1 << 1)/* special case start of file */
 68#define XFS_ALLOC_NOBUSY		(1 << 2)/* Busy extents not allowed */
 69
 70/* freespace limit calculations */
 71unsigned int xfs_alloc_set_aside(struct xfs_mount *mp);
 72unsigned int xfs_alloc_ag_max_usable(struct xfs_mount *mp);
 73
 74xfs_extlen_t xfs_alloc_longest_free_extent(struct xfs_perag *pag,
 75		xfs_extlen_t need, xfs_extlen_t reserved);
 76unsigned int xfs_alloc_min_freelist(struct xfs_mount *mp,
 77		struct xfs_perag *pag);
 78int xfs_alloc_get_freelist(struct xfs_perag *pag, struct xfs_trans *tp,
 79		struct xfs_buf *agfbp, xfs_agblock_t *bnop, int	 btreeblk);
 80int xfs_alloc_put_freelist(struct xfs_perag *pag, struct xfs_trans *tp,
 81		struct xfs_buf *agfbp, struct xfs_buf *agflbp,
 82		xfs_agblock_t bno, int btreeblk);
 83
 84/*
 85 * Compute and fill in value of m_alloc_maxlevels.
 86 */
 87void
 88xfs_alloc_compute_maxlevels(
 89	struct xfs_mount	*mp);	/* file system mount structure */
 90
 91/*
 92 * Log the given fields from the agf structure.
 93 */
 94void
 95xfs_alloc_log_agf(
 96	struct xfs_trans *tp,	/* transaction pointer */
 97	struct xfs_buf	*bp,	/* buffer for a.g. freelist header */
 98	uint32_t	fields);/* mask of fields to be logged (XFS_AGF_...) */
 99
100/*
101 * Allocate an extent anywhere in the specific AG given. If there is no
102 * space matching the requirements in that AG, then the allocation will fail.
103 */
104int xfs_alloc_vextent_this_ag(struct xfs_alloc_arg *args, xfs_agnumber_t agno);
105
106/*
107 * Allocate an extent as close to the target as possible. If there are not
108 * viable candidates in the AG, then fail the allocation.
109 */
110int xfs_alloc_vextent_near_bno(struct xfs_alloc_arg *args,
111		xfs_fsblock_t target);
112
113/*
114 * Allocate an extent exactly at the target given. If this is not possible
115 * then the allocation fails.
116 */
117int xfs_alloc_vextent_exact_bno(struct xfs_alloc_arg *args,
118		xfs_fsblock_t target);
119
120/*
121 * Best effort full filesystem allocation scan.
122 *
123 * Locality aware allocation will be attempted in the initial AG, but on failure
124 * non-localised attempts will be made. The AGs are constrained by previous
125 * allocations in the current transaction. Two passes will be made - the first
126 * non-blocking, the second blocking.
127 */
128int xfs_alloc_vextent_start_ag(struct xfs_alloc_arg *args,
129		xfs_fsblock_t target);
130
131/*
132 * Iterate from the AG indicated from args->fsbno through to the end of the
133 * filesystem attempting blocking allocation. This is for use in last
134 * resort allocation attempts when everything else has failed.
135 */
136int xfs_alloc_vextent_first_ag(struct xfs_alloc_arg *args,
137		xfs_fsblock_t target);
138
139/*
140 * Free an extent.
141 */
142int				/* error */
143__xfs_free_extent(
144	struct xfs_trans	*tp,	/* transaction pointer */
145	struct xfs_perag	*pag,
146	xfs_agblock_t		agbno,
147	xfs_extlen_t		len,	/* length of extent */
148	const struct xfs_owner_info	*oinfo,	/* extent owner */
149	enum xfs_ag_resv_type	type,	/* block reservation type */
150	bool			skip_discard);
151
152static inline int
153xfs_free_extent(
154	struct xfs_trans	*tp,
155	struct xfs_perag	*pag,
156	xfs_agblock_t		agbno,
157	xfs_extlen_t		len,
158	const struct xfs_owner_info	*oinfo,
159	enum xfs_ag_resv_type	type)
160{
161	return __xfs_free_extent(tp, pag, agbno, len, oinfo, type, false);
162}
163
164int				/* error */
165xfs_alloc_lookup_le(
166	struct xfs_btree_cur	*cur,	/* btree cursor */
167	xfs_agblock_t		bno,	/* starting block of extent */
168	xfs_extlen_t		len,	/* length of extent */
169	int			*stat);	/* success/failure */
170
171int				/* error */
172xfs_alloc_lookup_ge(
173	struct xfs_btree_cur	*cur,	/* btree cursor */
174	xfs_agblock_t		bno,	/* starting block of extent */
175	xfs_extlen_t		len,	/* length of extent */
176	int			*stat);	/* success/failure */
177
178int					/* error */
179xfs_alloc_get_rec(
180	struct xfs_btree_cur	*cur,	/* btree cursor */
181	xfs_agblock_t		*bno,	/* output: starting block of extent */
182	xfs_extlen_t		*len,	/* output: length of extent */
183	int			*stat);	/* output: success/failure */
184
185union xfs_btree_rec;
186void xfs_alloc_btrec_to_irec(const union xfs_btree_rec *rec,
187		struct xfs_alloc_rec_incore *irec);
188xfs_failaddr_t xfs_alloc_check_irec(struct xfs_perag *pag,
189		const struct xfs_alloc_rec_incore *irec);
190
191int xfs_read_agf(struct xfs_perag *pag, struct xfs_trans *tp, int flags,
192		struct xfs_buf **agfbpp);
193int xfs_alloc_read_agf(struct xfs_perag *pag, struct xfs_trans *tp, int flags,
194		struct xfs_buf **agfbpp);
195int xfs_alloc_read_agfl(struct xfs_perag *pag, struct xfs_trans *tp,
196		struct xfs_buf **bpp);
197int xfs_free_agfl_block(struct xfs_trans *, xfs_agnumber_t, xfs_agblock_t,
198			struct xfs_buf *, struct xfs_owner_info *);
199int xfs_alloc_fix_freelist(struct xfs_alloc_arg *args, uint32_t alloc_flags);
200int xfs_free_extent_fix_freelist(struct xfs_trans *tp, struct xfs_perag *pag,
201		struct xfs_buf **agbp);
202
203xfs_extlen_t xfs_prealloc_blocks(struct xfs_mount *mp);
204
205typedef int (*xfs_alloc_query_range_fn)(
206	struct xfs_btree_cur			*cur,
207	const struct xfs_alloc_rec_incore	*rec,
208	void					*priv);
209
210int xfs_alloc_query_range(struct xfs_btree_cur *cur,
211		const struct xfs_alloc_rec_incore *low_rec,
212		const struct xfs_alloc_rec_incore *high_rec,
213		xfs_alloc_query_range_fn fn, void *priv);
214int xfs_alloc_query_all(struct xfs_btree_cur *cur, xfs_alloc_query_range_fn fn,
215		void *priv);
216
217int xfs_alloc_has_records(struct xfs_btree_cur *cur, xfs_agblock_t bno,
218		xfs_extlen_t len, enum xbtree_recpacking *outcome);
219
220typedef int (*xfs_agfl_walk_fn)(struct xfs_mount *mp, xfs_agblock_t bno,
221		void *priv);
222int xfs_agfl_walk(struct xfs_mount *mp, struct xfs_agf *agf,
223		struct xfs_buf *agflbp, xfs_agfl_walk_fn walk_fn, void *priv);
224
225static inline __be32 *
226xfs_buf_to_agfl_bno(
227	struct xfs_buf		*bp)
228{
229	if (xfs_has_crc(bp->b_mount))
230		return bp->b_addr + sizeof(struct xfs_agfl);
231	return bp->b_addr;
232}
233
234int xfs_free_extent_later(struct xfs_trans *tp, xfs_fsblock_t bno,
235		xfs_filblks_t len, const struct xfs_owner_info *oinfo,
236		enum xfs_ag_resv_type type, bool skip_discard);
237
238/*
239 * List of extents to be free "later".
240 * The list is kept sorted on xbf_startblock.
241 */
242struct xfs_extent_free_item {
243	struct list_head	xefi_list;
244	uint64_t		xefi_owner;
245	xfs_fsblock_t		xefi_startblock;/* starting fs block number */
246	xfs_extlen_t		xefi_blockcount;/* number of blocks in extent */
247	struct xfs_perag	*xefi_pag;
248	unsigned int		xefi_flags;
249	enum xfs_ag_resv_type	xefi_agresv;
250};
251
252void xfs_extent_free_get_group(struct xfs_mount *mp,
253		struct xfs_extent_free_item *xefi);
254
255#define XFS_EFI_SKIP_DISCARD	(1U << 0) /* don't issue discard */
256#define XFS_EFI_ATTR_FORK	(1U << 1) /* freeing attr fork block */
257#define XFS_EFI_BMBT_BLOCK	(1U << 2) /* freeing bmap btree block */
258#define XFS_EFI_CANCELLED	(1U << 3) /* dont actually free the space */
259
260struct xfs_alloc_autoreap {
261	struct xfs_defer_pending	*dfp;
262};
 
 
 
 
 
 
263
264int xfs_alloc_schedule_autoreap(const struct xfs_alloc_arg *args,
265		bool skip_discard, struct xfs_alloc_autoreap *aarp);
266void xfs_alloc_cancel_autoreap(struct xfs_trans *tp,
267		struct xfs_alloc_autoreap *aarp);
268void xfs_alloc_commit_autoreap(struct xfs_trans *tp,
269		struct xfs_alloc_autoreap *aarp);
270
271extern struct kmem_cache	*xfs_extfree_item_cache;
272
273int __init xfs_extfree_intent_init_cache(void);
274void xfs_extfree_intent_destroy_cache(void);
275
276xfs_failaddr_t xfs_validate_ag_length(struct xfs_buf *bp, uint32_t seqno,
277		uint32_t length);
278
279#endif	/* __XFS_ALLOC_H__ */