2 * Copyright (c) 2000-2002,2005 Silicon Graphics, Inc.
3 * Copyright (c) 2010 David Chinner.
4 * Copyright (c) 2011 Christoph Hellwig.
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.
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.
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
20 #ifndef __XFS_EXTENT_BUSY_H__
21 #define __XFS_EXTENT_BUSY_H__
24 * Busy block/extent entry. Indexed by a rbtree in perag to mark blocks that
25 * have been freed but whose transactions aren't committed to disk yet.
27 * Note that we use the transaction ID to record the transaction, not the
28 * transaction structure itself. See xfs_extent_busy_insert() for details.
30 struct xfs_extent_busy
{
31 struct rb_node rb_node
; /* ag by-bno indexed search tree */
32 struct list_head list
; /* transaction busy extent list */
37 #define XFS_EXTENT_BUSY_DISCARDED 0x01 /* undergoing a discard op. */
38 #define XFS_EXTENT_BUSY_SKIP_DISCARD 0x02 /* do not discard */
42 xfs_extent_busy_insert(struct xfs_trans
*tp
, xfs_agnumber_t agno
,
43 xfs_agblock_t bno
, xfs_extlen_t len
, unsigned int flags
);
46 xfs_extent_busy_clear(struct xfs_mount
*mp
, struct list_head
*list
,
50 xfs_extent_busy_search(struct xfs_mount
*mp
, xfs_agnumber_t agno
,
51 xfs_agblock_t bno
, xfs_extlen_t len
);
54 xfs_extent_busy_reuse(struct xfs_mount
*mp
, xfs_agnumber_t agno
,
55 xfs_agblock_t fbno
, xfs_extlen_t flen
, bool userdata
);
58 xfs_extent_busy_ag_cmp(void *priv
, struct list_head
*a
, struct list_head
*b
);
60 static inline void xfs_extent_busy_sort(struct list_head
*list
)
62 list_sort(NULL
, list
, xfs_extent_busy_ag_cmp
);
65 #endif /* __XFS_EXTENT_BUSY_H__ */