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- // 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_perag;
- 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, struct xfs_perag *pag,
- 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, struct xfs_perag *pag,
- xfs_agblock_t bno, xfs_extlen_t len);
- void
- xfs_extent_busy_reuse(struct xfs_mount *mp, struct xfs_perag *pag,
- 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, const struct list_head *a,
- const 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__ */
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