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7#ifndef __BMAP_DOT_H__
8#define __BMAP_DOT_H__
9
10#include <linux/iomap.h>
11
12#include "inode.h"
13
14struct inode;
15struct gfs2_inode;
16struct page;
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28static inline void gfs2_write_calc_reserv(const struct gfs2_inode *ip,
29 unsigned int len,
30 unsigned int *data_blocks,
31 unsigned int *ind_blocks)
32{
33 const struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
34 unsigned int tmp;
35
36 BUG_ON(gfs2_is_dir(ip));
37 *data_blocks = (len >> sdp->sd_sb.sb_bsize_shift) + 3;
38 *ind_blocks = 3 * (sdp->sd_max_height - 1);
39
40 for (tmp = *data_blocks; tmp > sdp->sd_diptrs;) {
41 tmp = DIV_ROUND_UP(tmp, sdp->sd_inptrs);
42 *ind_blocks += tmp;
43 }
44}
45
46extern const struct iomap_ops gfs2_iomap_ops;
47extern const struct iomap_writeback_ops gfs2_writeback_ops;
48
49extern int gfs2_unstuff_dinode(struct gfs2_inode *ip);
50extern int gfs2_block_map(struct inode *inode, sector_t lblock,
51 struct buffer_head *bh, int create);
52extern int gfs2_iomap_get(struct inode *inode, loff_t pos, loff_t length,
53 struct iomap *iomap);
54extern int gfs2_iomap_alloc(struct inode *inode, loff_t pos, loff_t length,
55 struct iomap *iomap);
56extern int gfs2_get_extent(struct inode *inode, u64 lblock, u64 *dblock,
57 unsigned int *extlen);
58extern int gfs2_alloc_extent(struct inode *inode, u64 lblock, u64 *dblock,
59 unsigned *extlen, bool *new);
60extern int gfs2_setattr_size(struct inode *inode, u64 size);
61extern void gfs2_trim_blocks(struct inode *inode);
62extern int gfs2_truncatei_resume(struct gfs2_inode *ip);
63extern int gfs2_file_dealloc(struct gfs2_inode *ip);
64extern int gfs2_write_alloc_required(struct gfs2_inode *ip, u64 offset,
65 unsigned int len);
66extern int gfs2_map_journal_extents(struct gfs2_sbd *sdp, struct gfs2_jdesc *jd);
67extern void gfs2_free_journal_extents(struct gfs2_jdesc *jd);
68extern int __gfs2_punch_hole(struct file *file, loff_t offset, loff_t length);
69
70#endif
71