1/* SPDX-License-Identifier: GPL-2.0+ */
2/*
3 * Copyright (C) 2016 Oracle.  All Rights Reserved.
4 * Author: Darrick J. Wong <darrick.wong@oracle.com>
5 */
6#ifndef __XFS_AG_RESV_H__
7#define	__XFS_AG_RESV_H__
8
9int xfs_ag_resv_free(struct xfs_perag *pag);
10int xfs_ag_resv_init(struct xfs_perag *pag, struct xfs_trans *tp);
11
12bool xfs_ag_resv_critical(struct xfs_perag *pag, enum xfs_ag_resv_type type);
13xfs_extlen_t xfs_ag_resv_needed(struct xfs_perag *pag,
14		enum xfs_ag_resv_type type);
15
16void xfs_ag_resv_alloc_extent(struct xfs_perag *pag, enum xfs_ag_resv_type type,
17		struct xfs_alloc_arg *args);
18void xfs_ag_resv_free_extent(struct xfs_perag *pag, enum xfs_ag_resv_type type,
19		struct xfs_trans *tp, xfs_extlen_t len);
20
21/*
22 * RMAPBT reservation accounting wrappers. Since rmapbt blocks are sourced from
23 * the AGFL, they are allocated one at a time and the reservation updates don't
24 * require a transaction.
25 */
26static inline void
27xfs_ag_resv_rmapbt_alloc(
28	struct xfs_mount	*mp,
29	xfs_agnumber_t		agno)
30{
31	struct xfs_alloc_arg	args = { NULL };
32	struct xfs_perag	*pag;
33
34	args.len = 1;
35	pag = xfs_perag_get(mp, agno);
36	xfs_ag_resv_alloc_extent(pag, XFS_AG_RESV_RMAPBT, &args);
37	xfs_perag_put(pag);
38}
39
40#endif	/* __XFS_AG_RESV_H__ */
41