fs/xfs/libxfs/xfs_ag.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Copyright (c) 2018 Red Hat, Inc.
   4  * All rights reserved.
   5  */
   6
   7 #ifndef __LIBXFS_AG_H
   8 #define __LIBXFS_AG_H 1
   9
  10 struct xfs_mount;
  11 struct xfs_trans;
  12
  13 struct aghdr_init_data {
  14         /* per ag data */
  15         xfs_agblock_t           agno;           /* ag to init */
  16         xfs_extlen_t            agsize;         /* new AG size */
  17         struct list_head        buffer_list;    /* buffer writeback list */
  18         xfs_rfsblock_t          nfree;          /* cumulative new free space */
  19
  20         /* per header data */
  21         xfs_daddr_t             daddr;          /* header location */
  22         size_t                  numblks;        /* size of header */
  23         xfs_btnum_t             type;           /* type of btree root block */
  24 };
  25
  26 int xfs_ag_init_headers(struct xfs_mount *mp, struct aghdr_init_data *id);
  27 int xfs_ag_extend_space(struct xfs_mount *mp, struct xfs_trans *tp,
  28                         struct aghdr_init_data *id, xfs_extlen_t len);
  29 int xfs_ag_get_geometry(struct xfs_mount *mp, xfs_agnumber_t agno,
  30                         struct xfs_ag_geometry *ageo);
  31
  32 #endif /* __LIBXFS_AG_H */