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/fs/xfs/xfs_rw.h

https://bitbucket.org/cyanogenmod/android_kernel_asus_tf300t
C Header | 49 lines | 19 code | 4 blank | 26 comment | 0 complexity | e2c645d536ffcc3b07580dcf0bab47f9 MD5 | raw file
Possible License(s): LGPL-2.0, AGPL-1.0, GPL-2.0
 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
21struct xfs_buf;
22struct xfs_inode;
23struct 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 */
31static inline xfs_daddr_t
32xfs_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 */
42extern 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);
47extern xfs_extlen_t xfs_get_extsz_hint(struct xfs_inode *ip);
48
49#endif /* __XFS_RW_H__ */