// SPDX-License-Identifier: GPL-2.0
|
/*
|
* Copyright (c) 2000-2002,2005 Silicon Graphics, Inc.
|
* Copyright (c) 2010 David Chinner.
|
* Copyright (c) 2011 Christoph Hellwig.
|
* All Rights Reserved.
|
*/
|
#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);
|
|
bool
|
xfs_extent_busy_trim(struct xfs_alloc_arg *args, xfs_agblock_t *bno,
|
xfs_extlen_t *len, unsigned *busy_gen);
|
|
void
|
xfs_extent_busy_flush(struct xfs_mount *mp, struct xfs_perag *pag,
|
unsigned busy_gen);
|
|
void
|
xfs_extent_busy_wait_all(struct xfs_mount *mp);
|
|
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__ */
|
