73 lines
2.4 KiB
C
73 lines
2.4 KiB
C
/*
|
|
* Copyright (c) 2000-2002,2005 Silicon Graphics, Inc.
|
|
* Copyright (c) 2010 David Chinner.
|
|
* Copyright (c) 2011 Christoph Hellwig.
|
|
* All Rights Reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it would be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write the Free Software Foundation,
|
|
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
#ifndef __XFS_EXTENT_BUSY_H__
|
|
#define __XFS_EXTENT_BUSY_H__
|
|
|
|
struct xfs_mount;
|
|
struct xfs_trans;
|
|
struct xfs_alloc_arg;
|
|
|
|
/*
|
|
* Busy block/extent entry. Indexed by a rbtree in perag to mark blocks that
|
|
* have been freed but whose transactions aren't committed to disk yet.
|
|
*
|
|
* Note that we use the transaction ID to record the transaction, not the
|
|
* transaction structure itself. See xfs_extent_busy_insert() for details.
|
|
*/
|
|
struct xfs_extent_busy {
|
|
struct rb_node rb_node; /* ag by-bno indexed search tree */
|
|
struct list_head list; /* transaction busy extent list */
|
|
xfs_agnumber_t agno;
|
|
xfs_agblock_t bno;
|
|
xfs_extlen_t length;
|
|
unsigned int flags;
|
|
#define XFS_EXTENT_BUSY_DISCARDED 0x01 /* undergoing a discard op. */
|
|
#define XFS_EXTENT_BUSY_SKIP_DISCARD 0x02 /* do not discard */
|
|
};
|
|
|
|
void
|
|
xfs_extent_busy_insert(struct xfs_trans *tp, xfs_agnumber_t agno,
|
|
xfs_agblock_t bno, xfs_extlen_t len, unsigned int flags);
|
|
|
|
void
|
|
xfs_extent_busy_clear(struct xfs_mount *mp, struct list_head *list,
|
|
bool do_discard);
|
|
|
|
int
|
|
xfs_extent_busy_search(struct xfs_mount *mp, xfs_agnumber_t agno,
|
|
xfs_agblock_t bno, xfs_extlen_t len);
|
|
|
|
void
|
|
xfs_extent_busy_reuse(struct xfs_mount *mp, xfs_agnumber_t agno,
|
|
xfs_agblock_t fbno, xfs_extlen_t flen, bool userdata);
|
|
|
|
void
|
|
xfs_extent_busy_trim(struct xfs_alloc_arg *args, xfs_agblock_t bno,
|
|
xfs_extlen_t len, xfs_agblock_t *rbno, xfs_extlen_t *rlen);
|
|
|
|
int
|
|
xfs_extent_busy_ag_cmp(void *priv, struct list_head *a, struct list_head *b);
|
|
|
|
static inline void xfs_extent_busy_sort(struct list_head *list)
|
|
{
|
|
list_sort(NULL, list, xfs_extent_busy_ag_cmp);
|
|
}
|
|
|
|
#endif /* __XFS_EXTENT_BUSY_H__ */
|