1 /* SPDX-License-Identifier: GPL-2.0-only */ 1
2 /*
3 * Copyright (C) Sistina Software, Inc. 1997-
4 * Copyright (C) 2004-2006 Red Hat, Inc. All
5 */
6
7 #ifndef __BMAP_DOT_H__
8 #define __BMAP_DOT_H__
9
10 #include <linux/iomap.h>
11
12 #include "inode.h"
13
14 struct inode;
15 struct gfs2_inode;
16 struct page;
17
18
19 /**
20 * gfs2_write_calc_reserv - calculate number o
21 * @ip: the file
22 * @len: the number of bytes to be written to
23 * @data_blocks: returns the number of data bl
24 * @ind_blocks: returns the number of indirect
25 *
26 */
27
28 static inline void gfs2_write_calc_reserv(cons
29 unsi
30 unsi
31 unsi
32 {
33 const struct gfs2_sbd *sdp = GFS2_SB(&
34 unsigned int tmp;
35
36 BUG_ON(gfs2_is_dir(ip));
37 *data_blocks = (len >> sdp->sd_sb.sb_b
38 *ind_blocks = 3 * (sdp->sd_max_height
39
40 for (tmp = *data_blocks; tmp > sdp->sd
41 tmp = DIV_ROUND_UP(tmp, sdp->s
42 *ind_blocks += tmp;
43 }
44 }
45
46 extern const struct iomap_ops gfs2_iomap_ops;
47 extern const struct iomap_writeback_ops gfs2_w
48
49 int gfs2_unstuff_dinode(struct gfs2_inode *ip)
50 int gfs2_block_map(struct inode *inode, sector
51 struct buffer_head *bh, int
52 int gfs2_iomap_get(struct inode *inode, loff_t
53 struct iomap *iomap);
54 int gfs2_iomap_alloc(struct inode *inode, loff
55 struct iomap *iomap);
56 int gfs2_get_extent(struct inode *inode, u64 l
57 unsigned int *extlen);
58 int gfs2_alloc_extent(struct inode *inode, u64
59 unsigned *extlen, bool *
60 int gfs2_setattr_size(struct inode *inode, u64
61 int gfs2_truncatei_resume(struct gfs2_inode *i
62 int gfs2_file_dealloc(struct gfs2_inode *ip);
63 int gfs2_write_alloc_required(struct gfs2_inod
64 unsigned int len
65 int gfs2_map_journal_extents(struct gfs2_sbd *
66 void gfs2_free_journal_extents(struct gfs2_jde
67 int __gfs2_punch_hole(struct file *file, loff_
68
69 #endif /* __BMAP_DOT_H__ */
70
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