| yuezonghe | 824eb0c | 2024-06-27 02:32:26 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2000-2006 Silicon Graphics, Inc. |
| 3 | * All Rights Reserved. |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or |
| 6 | * modify it under the terms of the GNU General Public License as |
| 7 | * published by the Free Software Foundation. |
| 8 | * |
| 9 | * This program is distributed in the hope that it would be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write the Free Software Foundation, |
| 16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 17 | */ |
| 18 | #ifndef __XFS_RW_H__ |
| 19 | #define __XFS_RW_H__ |
| 20 | |
| 21 | struct xfs_buf; |
| 22 | struct xfs_inode; |
| 23 | struct xfs_mount; |
| 24 | |
| 25 | /* |
| 26 | * Convert the given file system block to a disk block. |
| 27 | * We have to treat it differently based on whether the |
| 28 | * file is a real time file or not, because the bmap code |
| 29 | * does. |
| 30 | */ |
| 31 | static inline xfs_daddr_t |
| 32 | xfs_fsb_to_db(struct xfs_inode *ip, xfs_fsblock_t fsb) |
| 33 | { |
| 34 | return (XFS_IS_REALTIME_INODE(ip) ? \ |
| 35 | (xfs_daddr_t)XFS_FSB_TO_BB((ip)->i_mount, (fsb)) : \ |
| 36 | XFS_FSB_TO_DADDR((ip)->i_mount, (fsb))); |
| 37 | } |
| 38 | |
| 39 | /* |
| 40 | * Prototypes for functions in xfs_rw.c. |
| 41 | */ |
| 42 | extern int xfs_read_buf(struct xfs_mount *mp, xfs_buftarg_t *btp, |
| 43 | xfs_daddr_t blkno, int len, uint flags, |
| 44 | struct xfs_buf **bpp); |
| 45 | extern xfs_extlen_t xfs_get_extsz_hint(struct xfs_inode *ip); |
| 46 | |
| 47 | #endif /* __XFS_RW_H__ */ |