projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| efc27b52 DC |
1 | /* |
| 2 | * Copyright (c) 2000-2002,2005 Silicon Graphics, Inc. | |
| 3 | * Copyright (c) 2010 David Chinner. | |
| 4 | * Copyright (c) 2011 Christoph Hellwig. | |
| 5 | * All Rights Reserved. | |
| 6 | * | |
| 7 | * This program is free software; you can redistribute it and/or | |
| 8 | * modify it under the terms of the GNU General Public License as | |
| 9 | * published by the Free Software Foundation. | |
| 10 | * | |
| 11 | * This program is distributed in the hope that it would be useful, | |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 14 | * GNU General Public License for more details. | |
| 15 | * | |
| 16 | * You should have received a copy of the GNU General Public License | |
| 17 | * along with this program; if not, write the Free Software Foundation, | |
| 18 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
| 19 | */ | |
| 20 | #ifndef __XFS_EXTENT_BUSY_H__ | |
| 21 | #define __XFS_EXTENT_BUSY_H__ | |
| 22 | ||
| a4fbe6ab DC |
23 | struct xfs_mount; |
| 24 | struct xfs_trans; | |
| 25 | struct xfs_alloc_arg; | |
| 26 | ||
| efc27b52 DC |
27 | /* |
| 28 | * Busy block/extent entry. Indexed by a rbtree in perag to mark blocks that | |
| 29 | * have been freed but whose transactions aren't committed to disk yet. | |
| 30 | * | |
| 31 | * Note that we use the transaction ID to record the transaction, not the | |
| 32 | * transaction structure itself. See xfs_extent_busy_insert() for details. | |
| 33 | */ | |
| 4ecbfe63 | 34 | struct xfs_extent_busy { |
| efc27b52 DC |
35 | struct rb_node rb_node; /* ag by-bno indexed search tree */ |
| 36 | struct list_head list; /* transaction busy extent list */ | |
| 37 | xfs_agnumber_t agno; | |
| 38 | xfs_agblock_t bno; | |
| 39 | xfs_extlen_t length; | |
| 40 | unsigned int flags; | |
| 4ecbfe63 DC |
41 | #define XFS_EXTENT_BUSY_DISCARDED 0x01 /* undergoing a discard op. */ |
| 42 | #define XFS_EXTENT_BUSY_SKIP_DISCARD 0x02 /* do not discard */ | |
| efc27b52 DC |
43 | }; |
| 44 | ||
| 45 | void | |
| 4ecbfe63 | 46 | xfs_extent_busy_insert(struct xfs_trans *tp, xfs_agnumber_t agno, |
| efc27b52 DC |
47 | xfs_agblock_t bno, xfs_extlen_t len, unsigned int flags); |
| 48 | ||
| 49 | void | |
| 4ecbfe63 | 50 | xfs_extent_busy_clear(struct xfs_mount *mp, struct list_head *list, |
| efc27b52 DC |
51 | bool do_discard); |
| 52 | ||
| 53 | int | |
| 4ecbfe63 | 54 | xfs_extent_busy_search(struct xfs_mount *mp, xfs_agnumber_t agno, |
| efc27b52 DC |
55 | xfs_agblock_t bno, xfs_extlen_t len); |
| 56 | ||
| 57 | void | |
| 4ecbfe63 | 58 | xfs_extent_busy_reuse(struct xfs_mount *mp, xfs_agnumber_t agno, |
| efc27b52 DC |
59 | xfs_agblock_t fbno, xfs_extlen_t flen, bool userdata); |
| 60 | ||
| ebf55872 CH |
61 | bool |
| 62 | xfs_extent_busy_trim(struct xfs_alloc_arg *args, xfs_agblock_t *bno, | |
| 63 | xfs_extlen_t *len, unsigned *busy_gen); | |
| 64 | ||
| 65 | void | |
| 66 | xfs_extent_busy_flush(struct xfs_mount *mp, struct xfs_perag *pag, | |
| 67 | unsigned busy_gen); | |
| 68 | ||
| e700a06c | 69 | void |
| ebf55872 | 70 | xfs_extent_busy_wait_all(struct xfs_mount *mp); |
| e700a06c | 71 | |
| efc27b52 | 72 | int |
| 4ecbfe63 | 73 | xfs_extent_busy_ag_cmp(void *priv, struct list_head *a, struct list_head *b); |
| efc27b52 | 74 | |
| 4ecbfe63 | 75 | static inline void xfs_extent_busy_sort(struct list_head *list) |
| efc27b52 | 76 | { |
| 4ecbfe63 | 77 | list_sort(NULL, list, xfs_extent_busy_ag_cmp); |
| efc27b52 DC |
78 | } |
| 79 | ||
| 80 | #endif /* __XFS_EXTENT_BUSY_H__ */ |