projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 | 1 | /* |
| 1e69dd0e | 2 | * Copyright (c) 2000-2006 Silicon Graphics, Inc. |
| 7b718769 | 3 | * All Rights Reserved. |
| 1da177e4 | 4 | * |
| 7b718769 NS |
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 | |
| 1da177e4 LT |
7 | * published by the Free Software Foundation. |
| 8 | * | |
| 7b718769 NS |
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. | |
| 1da177e4 | 13 | * |
| 7b718769 NS |
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 | |
| 1da177e4 LT |
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 | ||
| 1da177e4 LT |
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 | */ | |
| a844f451 NS |
31 | static inline xfs_daddr_t |
| 32 | xfs_fsb_to_db(struct xfs_inode *ip, xfs_fsblock_t fsb) | |
| 33 | { | |
| 71ddabb9 | 34 | return (XFS_IS_REALTIME_INODE(ip) ? \ |
| 1da177e4 | 35 | (xfs_daddr_t)XFS_FSB_TO_BB((ip)->i_mount, (fsb)) : \ |
| a844f451 NS |
36 | XFS_FSB_TO_DADDR((ip)->i_mount, (fsb))); |
| 37 | } | |
| 1da177e4 | 38 | |
| 92dfe8d2 DC |
39 | /* |
| 40 | * Flags for xfs_free_eofblocks | |
| 41 | */ | |
| 42 | #define XFS_FREE_EOF_LOCK (1<<0) | |
| 43 | #define XFS_FREE_EOF_NOLOCK (1<<1) | |
| 44 | ||
| 957d0ebe DC |
45 | |
| 46 | /* | |
| 47 | * helper function to extract extent size hint from inode | |
| 48 | */ | |
| 49 | STATIC_INLINE xfs_extlen_t | |
| 50 | xfs_get_extsz_hint( | |
| 51 | xfs_inode_t *ip) | |
| 52 | { | |
| 53 | xfs_extlen_t extsz; | |
| 54 | ||
| 71ddabb9 | 55 | if (unlikely(XFS_IS_REALTIME_INODE(ip))) { |
| 957d0ebe DC |
56 | extsz = (ip->i_d.di_flags & XFS_DIFLAG_EXTSIZE) |
| 57 | ? ip->i_d.di_extsize | |
| 58 | : ip->i_mount->m_sb.sb_rextsize; | |
| 59 | ASSERT(extsz); | |
| 60 | } else { | |
| 61 | extsz = (ip->i_d.di_flags & XFS_DIFLAG_EXTSIZE) | |
| 62 | ? ip->i_d.di_extsize : 0; | |
| 63 | } | |
| 64 | return extsz; | |
| 65 | } | |
| 66 | ||
| 1da177e4 LT |
67 | /* |
| 68 | * Prototypes for functions in xfs_rw.c. | |
| 69 | */ | |
| a844f451 NS |
70 | extern int xfs_write_clear_setuid(struct xfs_inode *ip); |
| 71 | extern int xfs_bwrite(struct xfs_mount *mp, struct xfs_buf *bp); | |
| 72 | extern int xfs_bioerror(struct xfs_buf *bp); | |
| 73 | extern int xfs_bioerror_relse(struct xfs_buf *bp); | |
| 74 | extern int xfs_read_buf(struct xfs_mount *mp, xfs_buftarg_t *btp, | |
| 75 | xfs_daddr_t blkno, int len, uint flags, | |
| 76 | struct xfs_buf **bpp); | |
| 77 | extern void xfs_ioerror_alert(char *func, struct xfs_mount *mp, | |
| 78 | xfs_buf_t *bp, xfs_daddr_t blkno); | |
| 1da177e4 | 79 | |
| 1da177e4 | 80 | #endif /* __XFS_RW_H__ */ |