1 /* 2 * Copyright (C) 2016 Oracle. All Rights Reserved. 3 * 4 * Author: Darrick J. Wong <darrick.wong@oracle.com> 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License 8 * as published by the Free Software Foundation; either version 2 9 * of the License, or (at your option) any later version. 10 * 11 * This program is distributed in the hope that it would be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. 19 */ 20 #ifndef __XFS_AG_RESV_H__ 21 #define __XFS_AG_RESV_H__ 22 23 int xfs_ag_resv_free(struct xfs_perag *pag); 24 int xfs_ag_resv_init(struct xfs_perag *pag); 25 26 bool xfs_ag_resv_critical(struct xfs_perag *pag, enum xfs_ag_resv_type type); 27 xfs_extlen_t xfs_ag_resv_needed(struct xfs_perag *pag, 28 enum xfs_ag_resv_type type); 29 30 void xfs_ag_resv_alloc_extent(struct xfs_perag *pag, enum xfs_ag_resv_type type, 31 struct xfs_alloc_arg *args); 32 void xfs_ag_resv_free_extent(struct xfs_perag *pag, enum xfs_ag_resv_type type, 33 struct xfs_trans *tp, xfs_extlen_t len); 34 35 /* 36 * RMAPBT reservation accounting wrappers. Since rmapbt blocks are sourced from 37 * the AGFL, they are allocated one at a time and the reservation updates don't 38 * require a transaction. 39 */ 40 static inline void 41 xfs_ag_resv_rmapbt_alloc( 42 struct xfs_mount *mp, 43 xfs_agnumber_t agno) 44 { 45 struct xfs_alloc_arg args = {0}; 46 struct xfs_perag *pag; 47 48 args.len = 1; 49 pag = xfs_perag_get(mp, agno); 50 xfs_ag_resv_alloc_extent(pag, XFS_AG_RESV_RMAPBT, &args); 51 xfs_perag_put(pag); 52 } 53 54 static inline void 55 xfs_ag_resv_rmapbt_free( 56 struct xfs_mount *mp, 57 xfs_agnumber_t agno) 58 { 59 struct xfs_perag *pag; 60 61 pag = xfs_perag_get(mp, agno); 62 xfs_ag_resv_free_extent(pag, XFS_AG_RESV_RMAPBT, NULL, 1); 63 xfs_perag_put(pag); 64 } 65 66 #endif /* __XFS_AG_RESV_H__ */ 67