cregit-Linux how code gets into the kernel

Release 4.18 fs/xfs/libxfs/xfs_ag_resv.h

Directory: fs/xfs/libxfs
// 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__

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); }

Contributors

PersonTokensPropCommitsCommitProp
Brian Foster58100.00%1100.00%
Total58100.00%1100.00%


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); }

Contributors

PersonTokensPropCommitsCommitProp
Brian Foster45100.00%1100.00%
Total45100.00%1100.00%

#endif /* __XFS_AG_RESV_H__ */

Overall Contributors

PersonTokensPropCommitsCommitProp
Brian Foster10452.53%133.33%
Darrick J. Wong9246.46%133.33%
Dave Chinner21.01%133.33%
Total198100.00%3100.00%
Directory: fs/xfs/libxfs
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