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/*
* Copyright (C) 2016 Oracle. All Rights Reserved.
*
* Author: Darrick J. Wong <darrick.wong@oracle.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it would be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef __XFS_AG_RESV_H__
#define __XFS_AG_RESV_H__
int xfs_ag_resv_free(struct xfs_perag *pag);
int xfs_ag_resv_init(struct xfs_perag *pag);
bool xfs_ag_resv_critical(struct xfs_perag *pag, enum xfs_ag_resv_type type);
xfs_extlen_t xfs_ag_resv_needed(struct xfs_perag *pag,
enum xfs_ag_resv_type type);
void xfs_ag_resv_alloc_extent(struct xfs_perag *pag, enum xfs_ag_resv_type type,
struct xfs_alloc_arg *args);
void xfs_ag_resv_free_extent(struct xfs_perag *pag, enum xfs_ag_resv_type type,
struct xfs_trans *tp, xfs_extlen_t len);
/*
* RMAPBT reservation accounting wrappers. Since rmapbt blocks are sourced from
* the AGFL, they are allocated one at a time and the reservation updates don't
* require a transaction.
*/
static inline void
xfs_ag_resv_rmapbt_alloc(
struct xfs_mount *mp,
xfs_agnumber_t agno)
{
struct xfs_alloc_arg args = {0};
struct xfs_perag *pag;
args.len = 1;
pag = xfs_perag_get(mp, agno);
xfs_ag_resv_alloc_extent(pag, XFS_AG_RESV_RMAPBT, &args);
xfs_perag_put(pag);
}
static inline void
xfs_ag_resv_rmapbt_free(
struct xfs_mount *mp,
xfs_agnumber_t agno)
{
struct xfs_perag *pag;
pag = xfs_perag_get(mp, agno);
xfs_ag_resv_free_extent(pag, XFS_AG_RESV_RMAPBT, NULL, 1);
xfs_perag_put(pag);
}
#endif /* __XFS_AG_RESV_H__ */
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