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0b61f8a4 | 1 | // SPDX-License-Identifier: GPL-2.0 |
efc27b52 DC |
2 | /* |
3 | * Copyright (c) 2000-2002,2005 Silicon Graphics, Inc. | |
4 | * Copyright (c) 2010 David Chinner. | |
5 | * Copyright (c) 2011 Christoph Hellwig. | |
6 | * All Rights Reserved. | |
efc27b52 DC |
7 | */ |
8 | #ifndef __XFS_EXTENT_BUSY_H__ | |
9 | #define __XFS_EXTENT_BUSY_H__ | |
10 | ||
a4fbe6ab | 11 | struct xfs_mount; |
45d06621 | 12 | struct xfs_perag; |
a4fbe6ab DC |
13 | struct xfs_trans; |
14 | struct xfs_alloc_arg; | |
15 | ||
efc27b52 DC |
16 | /* |
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. | |
19 | * | |
20 | * Note that we use the transaction ID to record the transaction, not the | |
21 | * transaction structure itself. See xfs_extent_busy_insert() for details. | |
22 | */ | |
4ecbfe63 | 23 | struct xfs_extent_busy { |
efc27b52 DC |
24 | struct rb_node rb_node; /* ag by-bno indexed search tree */ |
25 | struct list_head list; /* transaction busy extent list */ | |
26 | xfs_agnumber_t agno; | |
27 | xfs_agblock_t bno; | |
28 | xfs_extlen_t length; | |
29 | unsigned int flags; | |
4ecbfe63 DC |
30 | #define XFS_EXTENT_BUSY_DISCARDED 0x01 /* undergoing a discard op. */ |
31 | #define XFS_EXTENT_BUSY_SKIP_DISCARD 0x02 /* do not discard */ | |
efc27b52 DC |
32 | }; |
33 | ||
34 | void | |
45d06621 | 35 | xfs_extent_busy_insert(struct xfs_trans *tp, struct xfs_perag *pag, |
efc27b52 DC |
36 | xfs_agblock_t bno, xfs_extlen_t len, unsigned int flags); |
37 | ||
38 | void | |
4ecbfe63 | 39 | xfs_extent_busy_clear(struct xfs_mount *mp, struct list_head *list, |
efc27b52 DC |
40 | bool do_discard); |
41 | ||
42 | int | |
45d06621 | 43 | xfs_extent_busy_search(struct xfs_mount *mp, struct xfs_perag *pag, |
efc27b52 DC |
44 | xfs_agblock_t bno, xfs_extlen_t len); |
45 | ||
46 | void | |
45d06621 | 47 | xfs_extent_busy_reuse(struct xfs_mount *mp, struct xfs_perag *pag, |
efc27b52 DC |
48 | xfs_agblock_t fbno, xfs_extlen_t flen, bool userdata); |
49 | ||
ebf55872 CH |
50 | bool |
51 | xfs_extent_busy_trim(struct xfs_alloc_arg *args, xfs_agblock_t *bno, | |
52 | xfs_extlen_t *len, unsigned *busy_gen); | |
53 | ||
54 | void | |
55 | xfs_extent_busy_flush(struct xfs_mount *mp, struct xfs_perag *pag, | |
56 | unsigned busy_gen); | |
57 | ||
e700a06c | 58 | void |
ebf55872 | 59 | xfs_extent_busy_wait_all(struct xfs_mount *mp); |
e700a06c | 60 | |
efc27b52 | 61 | int |
4f0f586b ST |
62 | xfs_extent_busy_ag_cmp(void *priv, const struct list_head *a, |
63 | const struct list_head *b); | |
efc27b52 | 64 | |
4ecbfe63 | 65 | static inline void xfs_extent_busy_sort(struct list_head *list) |
efc27b52 | 66 | { |
4ecbfe63 | 67 | list_sort(NULL, list, xfs_extent_busy_ag_cmp); |
efc27b52 DC |
68 | } |
69 | ||
70 | #endif /* __XFS_EXTENT_BUSY_H__ */ |