projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 DC |
11 | struct xfs_mount; |
| 12 | struct xfs_trans; | |
| 13 | struct xfs_alloc_arg; | |
| 14 | ||
| efc27b52 DC |
15 | /* |
| 16 | * Busy block/extent entry. Indexed by a rbtree in perag to mark blocks that | |
| 17 | * have been freed but whose transactions aren't committed to disk yet. | |
| 18 | * | |
| 19 | * Note that we use the transaction ID to record the transaction, not the | |
| 20 | * transaction structure itself. See xfs_extent_busy_insert() for details. | |
| 21 | */ | |
| 4ecbfe63 | 22 | struct xfs_extent_busy { |
| efc27b52 DC |
23 | struct rb_node rb_node; /* ag by-bno indexed search tree */ |
| 24 | struct list_head list; /* transaction busy extent list */ | |
| 25 | xfs_agnumber_t agno; | |
| 26 | xfs_agblock_t bno; | |
| 27 | xfs_extlen_t length; | |
| 28 | unsigned int flags; | |
| 4ecbfe63 DC |
29 | #define XFS_EXTENT_BUSY_DISCARDED 0x01 /* undergoing a discard op. */ |
| 30 | #define XFS_EXTENT_BUSY_SKIP_DISCARD 0x02 /* do not discard */ | |
| efc27b52 DC |
31 | }; |
| 32 | ||
| 33 | void | |
| 4ecbfe63 | 34 | xfs_extent_busy_insert(struct xfs_trans *tp, xfs_agnumber_t agno, |
| efc27b52 DC |
35 | xfs_agblock_t bno, xfs_extlen_t len, unsigned int flags); |
| 36 | ||
| 37 | void | |
| 4ecbfe63 | 38 | xfs_extent_busy_clear(struct xfs_mount *mp, struct list_head *list, |
| efc27b52 DC |
39 | bool do_discard); |
| 40 | ||
| 41 | int | |
| 4ecbfe63 | 42 | xfs_extent_busy_search(struct xfs_mount *mp, xfs_agnumber_t agno, |
| efc27b52 DC |
43 | xfs_agblock_t bno, xfs_extlen_t len); |
| 44 | ||
| 45 | void | |
| 4ecbfe63 | 46 | xfs_extent_busy_reuse(struct xfs_mount *mp, xfs_agnumber_t agno, |
| efc27b52 DC |
47 | xfs_agblock_t fbno, xfs_extlen_t flen, bool userdata); |
| 48 | ||
| ebf55872 CH |
49 | bool |
| 50 | xfs_extent_busy_trim(struct xfs_alloc_arg *args, xfs_agblock_t *bno, | |
| 51 | xfs_extlen_t *len, unsigned *busy_gen); | |
| 52 | ||
| 53 | void | |
| 54 | xfs_extent_busy_flush(struct xfs_mount *mp, struct xfs_perag *pag, | |
| 55 | unsigned busy_gen); | |
| 56 | ||
| e700a06c | 57 | void |
| ebf55872 | 58 | xfs_extent_busy_wait_all(struct xfs_mount *mp); |
| e700a06c | 59 | |
| efc27b52 | 60 | int |
| 4ecbfe63 | 61 | xfs_extent_busy_ag_cmp(void *priv, struct list_head *a, struct list_head *b); |
| efc27b52 | 62 | |
| 4ecbfe63 | 63 | static inline void xfs_extent_busy_sort(struct list_head *list) |
| efc27b52 | 64 | { |
| 4ecbfe63 | 65 | list_sort(NULL, list, xfs_extent_busy_ag_cmp); |
| efc27b52 DC |
66 | } |
| 67 | ||
| 68 | #endif /* __XFS_EXTENT_BUSY_H__ */ |