1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2000-2002,2005 Silicon Graphics, Inc.
4 * Copyright (c) 2010 David Chinner.
5 * Copyright (c) 2011 Christoph Hellwig.
8 #ifndef __XFS_EXTENT_BUSY_H__
9 #define __XFS_EXTENT_BUSY_H__
17 * Busy block/extent entry. Indexed by a rbtree in perag to mark blocks that
18 * have been freed but whose transactions aren't committed to disk yet.
20 struct xfs_extent_busy {
21 struct rb_node rb_node; /* ag by-bno indexed search tree */
22 struct list_head list; /* transaction busy extent list */
27 #define XFS_EXTENT_BUSY_DISCARDED 0x01 /* undergoing a discard op. */
28 #define XFS_EXTENT_BUSY_SKIP_DISCARD 0x02 /* do not discard */
32 * List used to track groups of related busy extents all the way through
33 * to discard completion.
35 struct xfs_busy_extents {
36 struct xfs_mount *mount;
37 struct list_head extent_list;
38 struct work_struct endio_work;
41 * Owner is the object containing the struct xfs_busy_extents to free
42 * once the busy extents have been processed. If only the
43 * xfs_busy_extents object needs freeing, then point this at itself.
49 xfs_extent_busy_insert(struct xfs_trans *tp, struct xfs_perag *pag,
50 xfs_agblock_t bno, xfs_extlen_t len, unsigned int flags);
53 xfs_extent_busy_insert_discard(struct xfs_perag *pag, xfs_agblock_t bno,
54 xfs_extlen_t len, struct list_head *busy_list);
57 xfs_extent_busy_clear(struct xfs_mount *mp, struct list_head *list,
61 xfs_extent_busy_search(struct xfs_mount *mp, struct xfs_perag *pag,
62 xfs_agblock_t bno, xfs_extlen_t len);
65 xfs_extent_busy_reuse(struct xfs_mount *mp, struct xfs_perag *pag,
66 xfs_agblock_t fbno, xfs_extlen_t flen, bool userdata);
69 xfs_extent_busy_trim(struct xfs_alloc_arg *args, xfs_agblock_t *bno,
70 xfs_extlen_t *len, unsigned *busy_gen);
73 xfs_extent_busy_flush(struct xfs_trans *tp, struct xfs_perag *pag,
74 unsigned busy_gen, uint32_t alloc_flags);
77 xfs_extent_busy_wait_all(struct xfs_mount *mp);
80 xfs_extent_busy_ag_cmp(void *priv, const struct list_head *a,
81 const struct list_head *b);
83 static inline void xfs_extent_busy_sort(struct list_head *list)
85 list_sort(NULL, list, xfs_extent_busy_ag_cmp);
88 #endif /* __XFS_EXTENT_BUSY_H__ */