91 lines
2.4 KiB
C
91 lines
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2000-2002,2005 Silicon Graphics, Inc.
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* Copyright (c) 2010 David Chinner.
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* Copyright (c) 2011 Christoph Hellwig.
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* All Rights Reserved.
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*/
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#ifndef __XFS_EXTENT_BUSY_H__
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#define __XFS_EXTENT_BUSY_H__
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struct xfs_mount;
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struct xfs_perag;
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struct xfs_trans;
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struct xfs_alloc_arg;
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/*
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* Busy block/extent entry. Indexed by a rbtree in perag to mark blocks that
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* have been freed but whose transactions aren't committed to disk yet.
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*/
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struct xfs_extent_busy {
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struct rb_node rb_node; /* ag by-bno indexed search tree */
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struct list_head list; /* transaction busy extent list */
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xfs_agnumber_t agno;
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xfs_agblock_t bno;
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xfs_extlen_t length;
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unsigned int flags;
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#define XFS_EXTENT_BUSY_DISCARDED 0x01 /* undergoing a discard op. */
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#define XFS_EXTENT_BUSY_SKIP_DISCARD 0x02 /* do not discard */
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};
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/*
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* List used to track groups of related busy extents all the way through
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* to discard completion.
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*/
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struct xfs_busy_extents {
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struct xfs_mount *mount;
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struct list_head extent_list;
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struct work_struct endio_work;
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/*
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* Owner is the object containing the struct xfs_busy_extents to free
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* once the busy extents have been processed. If only the
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* xfs_busy_extents object needs freeing, then point this at itself.
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*/
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void *owner;
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};
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void
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xfs_extent_busy_insert(struct xfs_trans *tp, struct xfs_perag *pag,
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xfs_agblock_t bno, xfs_extlen_t len, unsigned int flags);
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void
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xfs_extent_busy_insert_discard(struct xfs_perag *pag, xfs_agblock_t bno,
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xfs_extlen_t len, struct list_head *busy_list);
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void
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xfs_extent_busy_clear(struct xfs_mount *mp, struct list_head *list,
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bool do_discard);
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int
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xfs_extent_busy_search(struct xfs_mount *mp, struct xfs_perag *pag,
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xfs_agblock_t bno, xfs_extlen_t len);
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void
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xfs_extent_busy_reuse(struct xfs_mount *mp, struct xfs_perag *pag,
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xfs_agblock_t fbno, xfs_extlen_t flen, bool userdata);
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bool
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xfs_extent_busy_trim(struct xfs_alloc_arg *args, xfs_agblock_t *bno,
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xfs_extlen_t *len, unsigned *busy_gen);
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int
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xfs_extent_busy_flush(struct xfs_trans *tp, struct xfs_perag *pag,
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unsigned busy_gen, uint32_t alloc_flags);
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void
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xfs_extent_busy_wait_all(struct xfs_mount *mp);
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int
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xfs_extent_busy_ag_cmp(void *priv, const struct list_head *a,
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const struct list_head *b);
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static inline void xfs_extent_busy_sort(struct list_head *list)
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{
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list_sort(NULL, list, xfs_extent_busy_ag_cmp);
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}
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bool xfs_extent_busy_list_empty(struct xfs_perag *pag);
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#endif /* __XFS_EXTENT_BUSY_H__ */
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