blob: 11c41ec6ed75854dd0f59a974a2618c4c6c5f948 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Nathan Scott1e69dd02006-06-19 08:39:53 +10002 * Copyright (c) 2000-2006 Silicon Graphics, Inc.
Nathan Scott7b718762005-11-02 14:58:39 +11003 * All Rights Reserved.
Linus Torvalds1da177e2005-04-16 15:20:36 -07004 *
Nathan Scott7b718762005-11-02 14:58:39 +11005 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 * published by the Free Software Foundation.
8 *
Nathan Scott7b718762005-11-02 14:58:39 +11009 * 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.
Linus Torvalds1da177e2005-04-16 15:20:36 -070013 *
Nathan Scott7b718762005-11-02 14:58:39 +110014 * 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
Linus Torvalds1da177e2005-04-16 15:20:36 -070017 */
18#ifndef __XFS_RW_H__
19#define __XFS_RW_H__
20
21struct xfs_buf;
22struct xfs_inode;
23struct xfs_mount;
24
25/*
Linus Torvalds1da177e2005-04-16 15:20:36 -070026 * 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 */
Nathan Scotta844f452005-11-02 14:38:42 +110031static inline xfs_daddr_t
32xfs_fsb_to_db(struct xfs_inode *ip, xfs_fsblock_t fsb)
33{
Eric Sandeen71ddabb2007-11-23 16:29:42 +110034 return (XFS_IS_REALTIME_INODE(ip) ? \
Linus Torvalds1da177e2005-04-16 15:20:36 -070035 (xfs_daddr_t)XFS_FSB_TO_BB((ip)->i_mount, (fsb)) : \
Nathan Scotta844f452005-11-02 14:38:42 +110036 XFS_FSB_TO_DADDR((ip)->i_mount, (fsb)));
37}
Linus Torvalds1da177e2005-04-16 15:20:36 -070038
39/*
40 * Prototypes for functions in xfs_rw.c.
41 */
Nathan Scotta844f452005-11-02 14:38:42 +110042extern 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);
45extern void xfs_ioerror_alert(char *func, struct xfs_mount *mp,
46 xfs_buf_t *bp, xfs_daddr_t blkno);
Christoph Hellwig5683f532009-11-14 16:17:21 +000047extern xfs_extlen_t xfs_get_extsz_hint(struct xfs_inode *ip);
Linus Torvalds1da177e2005-04-16 15:20:36 -070048
Linus Torvalds1da177e2005-04-16 15:20:36 -070049#endif /* __XFS_RW_H__ */