projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 340785cc DW |
1 | /* |
| 2 | * Copyright (C) 2016 Oracle. All Rights Reserved. | |
| 3 | * | |
| 4 | * Author: Darrick J. Wong <darrick.wong@oracle.com> | |
| 5 | * | |
| 6 | * This program is free software; you can redistribute it and/or | |
| 7 | * modify it under the terms of the GNU General Public License | |
| 8 | * as published by the Free Software Foundation; either version 2 | |
| 9 | * of the License, or (at your option) any later version. | |
| 10 | * | |
| 11 | * This program is distributed in the hope that it would be useful, | |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 14 | * GNU General Public License for more details. | |
| 15 | * | |
| 16 | * You should have received a copy of the GNU General Public License | |
| 17 | * along with this program; if not, write the Free Software Foundation, | |
| 18 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. | |
| 19 | */ | |
| 20 | #ifndef __XFS_RMAP_H__ | |
| 21 | #define __XFS_RMAP_H__ | |
| 22 | ||
| 23 | static inline void | |
| 24 | xfs_rmap_ag_owner( | |
| 25 | struct xfs_owner_info *oi, | |
| 26 | uint64_t owner) | |
| 27 | { | |
| 28 | oi->oi_owner = owner; | |
| 29 | oi->oi_offset = 0; | |
| 30 | oi->oi_flags = 0; | |
| 31 | } | |
| 32 | ||
| 33 | static inline void | |
| 34 | xfs_rmap_ino_bmbt_owner( | |
| 35 | struct xfs_owner_info *oi, | |
| 36 | xfs_ino_t ino, | |
| 37 | int whichfork) | |
| 38 | { | |
| 39 | oi->oi_owner = ino; | |
| 40 | oi->oi_offset = 0; | |
| 41 | oi->oi_flags = XFS_OWNER_INFO_BMBT_BLOCK; | |
| 42 | if (whichfork == XFS_ATTR_FORK) | |
| 43 | oi->oi_flags |= XFS_OWNER_INFO_ATTR_FORK; | |
| 44 | } | |
| 45 | ||
| 46 | static inline void | |
| 47 | xfs_rmap_ino_owner( | |
| 48 | struct xfs_owner_info *oi, | |
| 49 | xfs_ino_t ino, | |
| 50 | int whichfork, | |
| 51 | xfs_fileoff_t offset) | |
| 52 | { | |
| 53 | oi->oi_owner = ino; | |
| 54 | oi->oi_offset = offset; | |
| 55 | oi->oi_flags = 0; | |
| 56 | if (whichfork == XFS_ATTR_FORK) | |
| 57 | oi->oi_flags |= XFS_OWNER_INFO_ATTR_FORK; | |
| 58 | } | |
| 59 | ||
| 60 | static inline void | |
| 61 | xfs_rmap_skip_owner_update( | |
| 62 | struct xfs_owner_info *oi) | |
| 63 | { | |
| 64 | oi->oi_owner = XFS_RMAP_OWN_UNKNOWN; | |
| 65 | } | |
| 66 | ||
| 673930c3 DW |
67 | /* Reverse mapping functions. */ |
| 68 | ||
| 69 | struct xfs_buf; | |
| 70 | ||
| 71 | int xfs_rmap_alloc(struct xfs_trans *tp, struct xfs_buf *agbp, | |
| 72 | xfs_agnumber_t agno, xfs_agblock_t bno, xfs_extlen_t len, | |
| 73 | struct xfs_owner_info *oinfo); | |
| 74 | int xfs_rmap_free(struct xfs_trans *tp, struct xfs_buf *agbp, | |
| 75 | xfs_agnumber_t agno, xfs_agblock_t bno, xfs_extlen_t len, | |
| 76 | struct xfs_owner_info *oinfo); | |
| 77 | ||
| 340785cc | 78 | #endif /* __XFS_RMAP_H__ */ |