f09d167c20
All defer op instance place their own extension of the log item into the dfp_done field. Replace that with a xfs_log_item to improve type safety and make the code easier to follow. Also use the opportunity to improve the ->finish_item calling conventions to place the done log item as the higher level structure before the list_entry used for the individual items. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
65 lines
2.2 KiB
C
65 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2016 Oracle. All Rights Reserved.
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* Author: Darrick J. Wong <darrick.wong@oracle.com>
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*/
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#ifndef __XFS_DEFER_H__
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#define __XFS_DEFER_H__
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struct xfs_defer_op_type;
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/*
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* Header for deferred operation list.
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*/
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enum xfs_defer_ops_type {
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XFS_DEFER_OPS_TYPE_BMAP,
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XFS_DEFER_OPS_TYPE_REFCOUNT,
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XFS_DEFER_OPS_TYPE_RMAP,
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XFS_DEFER_OPS_TYPE_FREE,
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XFS_DEFER_OPS_TYPE_AGFL_FREE,
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XFS_DEFER_OPS_TYPE_MAX,
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};
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/*
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* Save a log intent item and a list of extents, so that we can replay
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* whatever action had to happen to the extent list and file the log done
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* item.
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*/
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struct xfs_defer_pending {
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struct list_head dfp_list; /* pending items */
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struct list_head dfp_work; /* work items */
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struct xfs_log_item *dfp_intent; /* log intent item */
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struct xfs_log_item *dfp_done; /* log done item */
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unsigned int dfp_count; /* # extent items */
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enum xfs_defer_ops_type dfp_type;
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};
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void xfs_defer_add(struct xfs_trans *tp, enum xfs_defer_ops_type type,
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struct list_head *h);
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int xfs_defer_finish_noroll(struct xfs_trans **tp);
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int xfs_defer_finish(struct xfs_trans **tp);
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void xfs_defer_cancel(struct xfs_trans *);
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void xfs_defer_move(struct xfs_trans *dtp, struct xfs_trans *stp);
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/* Description of a deferred type. */
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struct xfs_defer_op_type {
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struct xfs_log_item *(*create_intent)(struct xfs_trans *tp,
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struct list_head *items, unsigned int count, bool sort);
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void (*abort_intent)(struct xfs_log_item *intent);
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struct xfs_log_item *(*create_done)(struct xfs_trans *tp,
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struct xfs_log_item *intent, unsigned int count);
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int (*finish_item)(struct xfs_trans *tp, struct xfs_log_item *done,
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struct list_head *item, void **state);
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void (*finish_cleanup)(struct xfs_trans *, void *, int);
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void (*cancel_item)(struct list_head *);
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unsigned int max_items;
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};
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extern const struct xfs_defer_op_type xfs_bmap_update_defer_type;
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extern const struct xfs_defer_op_type xfs_refcount_update_defer_type;
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extern const struct xfs_defer_op_type xfs_rmap_update_defer_type;
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extern const struct xfs_defer_op_type xfs_extent_free_defer_type;
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extern const struct xfs_defer_op_type xfs_agfl_free_defer_type;
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#endif /* __XFS_DEFER_H__ */
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