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
9 int xfs_ag_resv_free(struct xfs_perag *pag);
10 int xfs_ag_resv_init(struct xfs_perag *pag, struct xfs_trans *tp);
11
12 bool xfs_ag_resv_critical(struct xfs_perag *pag, enum xfs_ag_resv_type type);
13 xfs_extlen_t xfs_ag_resv_needed(struct xfs_perag *pag,
14 enum xfs_ag_resv_type type);
15
16 void xfs_ag_resv_alloc_extent(struct xfs_perag *pag, enum xfs_ag_resv_type type,
17 struct xfs_alloc_arg *args);
18 void 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 */
26 static inline void
xfs_ag_resv_rmapbt_alloc(struct xfs_mount * mp,xfs_agnumber_t agno)27 xfs_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 static inline void
xfs_ag_resv_rmapbt_free(struct xfs_mount * mp,xfs_agnumber_t agno)41 xfs_ag_resv_rmapbt_free(
42 struct xfs_mount *mp,
43 xfs_agnumber_t agno)
44 {
45 struct xfs_perag *pag;
46
47 pag = xfs_perag_get(mp, agno);
48 xfs_ag_resv_free_extent(pag, XFS_AG_RESV_RMAPBT, NULL, 1);
49 xfs_perag_put(pag);
50 }
51
52 #endif /* __XFS_AG_RESV_H__ */
53