// SPDX-License-Identifier: GPL-2.0+ /* * Copyright (C) 2016 Oracle. All Rights Reserved. * Author: Darrick J. Wong <darrick.wong@oracle.com> */ #ifndef __XFS_DEFER_H__ #define __XFS_DEFER_H__ struct xfs_defer_op_type; /* * Save a log intent item and a list of extents, so that we can replay * whatever action had to happen to the extent list and file the log done * item. */ struct xfs_defer_pending { const struct xfs_defer_op_type *dfp_type; /* function pointers */ struct list_head dfp_list; /* pending items */ void *dfp_intent; /* log intent item */ void *dfp_done; /* log done item */ struct list_head dfp_work; /* work items */ unsigned int dfp_count; /* # extent items */ }; /* * Header for deferred operation list. */ enum xfs_defer_ops_type { XFS_DEFER_OPS_TYPE_BMAP, XFS_DEFER_OPS_TYPE_REFCOUNT, XFS_DEFER_OPS_TYPE_RMAP, XFS_DEFER_OPS_TYPE_FREE, XFS_DEFER_OPS_TYPE_AGFL_FREE, XFS_DEFER_OPS_TYPE_MAX, }; void xfs_defer_add(struct xfs_trans *tp, enum xfs_defer_ops_type type, struct list_head *h); int xfs_defer_finish_noroll(struct xfs_trans **tp); int xfs_defer_finish(struct xfs_trans **tp); void xfs_defer_cancel(struct xfs_trans *); void xfs_defer_move(struct xfs_trans *dtp, struct xfs_trans *stp); /* Description of a deferred type. */ struct xfs_defer_op_type { enum xfs_defer_ops_type type; unsigned int max_items; void (*abort_intent)(void *); void *(*create_done)(struct xfs_trans *, void *, unsigned int); int (*finish_item)(struct xfs_trans *, struct list_head *, void *, void **); void (*finish_cleanup)(struct xfs_trans *, void *, int); void (*cancel_item)(struct list_head *); int (*diff_items)(void *, struct list_head *, struct list_head *); void *(*create_intent)(struct xfs_trans *, uint); void (*log_item)(struct xfs_trans *, void *, struct list_head *); }; void xfs_defer_init_op_type(const struct xfs_defer_op_type *type); #endif /* __XFS_DEFER_H__ */