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 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 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