[GFS2] The core of GFS2
[linux-2.6.git] / fs / gfs2 / bmap.h
1 /*
2  * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
3  * Copyright (C) 2004-2005 Red Hat, Inc.  All rights reserved.
4  *
5  * This copyrighted material is made available to anyone wishing to use,
6  * modify, copy, or redistribute it subject to the terms and conditions
7  * of the GNU General Public License v.2.
8  */
9
10 #ifndef __BMAP_DOT_H__
11 #define __BMAP_DOT_H__
12
13 typedef int (*gfs2_unstuffer_t) (struct gfs2_inode * ip,
14                                  struct buffer_head * dibh, uint64_t block,
15                                  void *private);
16 int gfs2_unstuffer_sync(struct gfs2_inode *ip, struct buffer_head *dibh,
17                         uint64_t block, void *private);
18 int gfs2_unstuff_dinode(struct gfs2_inode *ip, gfs2_unstuffer_t unstuffer,
19                         void *private);
20
21 int gfs2_block_map(struct gfs2_inode *ip,
22                    uint64_t lblock, int *new,
23                    uint64_t *dblock, uint32_t *extlen);
24
25 typedef int (*gfs2_truncator_t) (struct gfs2_inode * ip, uint64_t size);
26 int gfs2_truncatei(struct gfs2_inode *ip, uint64_t size,
27                    gfs2_truncator_t truncator);
28 int gfs2_truncatei_resume(struct gfs2_inode *ip);
29 int gfs2_file_dealloc(struct gfs2_inode *ip);
30
31 void gfs2_write_calc_reserv(struct gfs2_inode *ip, unsigned int len,
32                             unsigned int *data_blocks,
33                             unsigned int *ind_blocks);
34 int gfs2_write_alloc_required(struct gfs2_inode *ip, uint64_t offset,
35                               unsigned int len, int *alloc_required);
36
37 int gfs2_get_file_meta(struct gfs2_inode *ip, struct gfs2_user_buffer *ub);
38
39 #endif /* __BMAP_DOT_H__ */