| // 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__ */ |