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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright (C) 2016 Oracle. All Rights Reserved.
* Author: Darrick J. Wong <darrick.wong@oracle.com>
*/
#ifndef __XFS_AG_RESV_H__
#define __XFS_AG_RESV_H__
void xfs_ag_resv_free(struct xfs_perag *pag);
int xfs_ag_resv_init(struct xfs_perag *pag, struct xfs_trans *tp);
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);
static inline struct xfs_ag_resv *
xfs_perag_resv(
struct xfs_perag *pag,
enum xfs_ag_resv_type type)
{
switch (type) {
case XFS_AG_RESV_METADATA:
return &pag->pag_meta_resv;
case XFS_AG_RESV_RMAPBT:
return &pag->pag_rmapbt_resv;
default:
return NULL;
}
}
/*
* 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 = { NULL };
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);
}
#endif /* __XFS_AG_RESV_H__ */
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