56 lines
1.5 KiB
C
56 lines
1.5 KiB
C
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/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (C) 2016 Oracle. All Rights Reserved.
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* Author: Darrick J. Wong <darrick.wong@oracle.com>
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*/
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#ifndef __XFS_AG_RESV_H__
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#define __XFS_AG_RESV_H__
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int xfs_ag_resv_free(struct xfs_perag *pag);
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int xfs_ag_resv_init(struct xfs_perag *pag, struct xfs_trans *tp);
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bool xfs_ag_resv_critical(struct xfs_perag *pag, enum xfs_ag_resv_type type);
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xfs_extlen_t xfs_ag_resv_needed(struct xfs_perag *pag,
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enum xfs_ag_resv_type type);
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void xfs_ag_resv_alloc_extent(struct xfs_perag *pag, enum xfs_ag_resv_type type,
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struct xfs_alloc_arg *args);
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void xfs_ag_resv_free_extent(struct xfs_perag *pag, enum xfs_ag_resv_type type,
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struct xfs_trans *tp, xfs_extlen_t len);
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static inline struct xfs_ag_resv *
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xfs_perag_resv(
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struct xfs_perag *pag,
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enum xfs_ag_resv_type type)
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{
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switch (type) {
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case XFS_AG_RESV_METADATA:
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return &pag->pag_meta_resv;
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case XFS_AG_RESV_RMAPBT:
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return &pag->pag_rmapbt_resv;
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default:
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return NULL;
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}
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}
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/*
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* RMAPBT reservation accounting wrappers. Since rmapbt blocks are sourced from
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* the AGFL, they are allocated one at a time and the reservation updates don't
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* require a transaction.
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*/
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static inline void
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xfs_ag_resv_rmapbt_alloc(
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struct xfs_mount *mp,
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xfs_agnumber_t agno)
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{
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struct xfs_alloc_arg args = { NULL };
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struct xfs_perag *pag;
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args.len = 1;
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pag = xfs_perag_get(mp, agno);
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xfs_ag_resv_alloc_extent(pag, XFS_AG_RESV_RMAPBT, &args);
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xfs_perag_put(pag);
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}
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#endif /* __XFS_AG_RESV_H__ */
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