Root/fs/jfs/jfs_extent.h

1/*
2 * Copyright (C) International Business Machines Corp., 2000-2001
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
12 * the 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 to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 */
18#ifndef _H_JFS_EXTENT
19#define _H_JFS_EXTENT
20
21/* get block allocation allocation hint as location of disk inode */
22#define INOHINT(ip) \
23    (addressPXD(&(JFS_IP(ip)->ixpxd)) + lengthPXD(&(JFS_IP(ip)->ixpxd)) - 1)
24
25extern int extAlloc(struct inode *, s64, s64, xad_t *, bool);
26extern int extFill(struct inode *, xad_t *);
27extern int extHint(struct inode *, s64, xad_t *);
28extern int extRealloc(struct inode *, s64, xad_t *, bool);
29extern int extRecord(struct inode *, xad_t *);
30
31#endif /* _H_JFS_EXTENT */
32

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