1 /* SPDX-License-Identifier: GPL-2.0-only */ <<
2 /* 1 /*
3 * Copyright (C) Sistina Software, Inc. 1997- 2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
4 * Copyright (C) 2004-2006 Red Hat, Inc. All 3 * Copyright (C) 2004-2006 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 version 2.
5 */ 8 */
6 9
7 #ifndef __BMAP_DOT_H__ 10 #ifndef __BMAP_DOT_H__
8 #define __BMAP_DOT_H__ 11 #define __BMAP_DOT_H__
9 12
10 #include <linux/iomap.h> 13 #include <linux/iomap.h>
11 14
12 #include "inode.h" 15 #include "inode.h"
13 16
14 struct inode; 17 struct inode;
15 struct gfs2_inode; 18 struct gfs2_inode;
16 struct page; 19 struct page;
17 20
18 21
19 /** 22 /**
20 * gfs2_write_calc_reserv - calculate number o 23 * gfs2_write_calc_reserv - calculate number of blocks needed to write to a file
21 * @ip: the file 24 * @ip: the file
22 * @len: the number of bytes to be written to 25 * @len: the number of bytes to be written to the file
23 * @data_blocks: returns the number of data bl 26 * @data_blocks: returns the number of data blocks required
24 * @ind_blocks: returns the number of indirect 27 * @ind_blocks: returns the number of indirect blocks required
25 * 28 *
26 */ 29 */
27 30
28 static inline void gfs2_write_calc_reserv(cons 31 static inline void gfs2_write_calc_reserv(const struct gfs2_inode *ip,
29 unsi 32 unsigned int len,
30 unsi 33 unsigned int *data_blocks,
31 unsi 34 unsigned int *ind_blocks)
32 { 35 {
33 const struct gfs2_sbd *sdp = GFS2_SB(& 36 const struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
34 unsigned int tmp; 37 unsigned int tmp;
35 38
36 BUG_ON(gfs2_is_dir(ip)); 39 BUG_ON(gfs2_is_dir(ip));
37 *data_blocks = (len >> sdp->sd_sb.sb_b 40 *data_blocks = (len >> sdp->sd_sb.sb_bsize_shift) + 3;
38 *ind_blocks = 3 * (sdp->sd_max_height 41 *ind_blocks = 3 * (sdp->sd_max_height - 1);
39 42
40 for (tmp = *data_blocks; tmp > sdp->sd 43 for (tmp = *data_blocks; tmp > sdp->sd_diptrs;) {
41 tmp = DIV_ROUND_UP(tmp, sdp->s 44 tmp = DIV_ROUND_UP(tmp, sdp->sd_inptrs);
42 *ind_blocks += tmp; 45 *ind_blocks += tmp;
43 } 46 }
44 } 47 }
45 48
46 extern const struct iomap_ops gfs2_iomap_ops; 49 extern const struct iomap_ops gfs2_iomap_ops;
47 extern const struct iomap_writeback_ops gfs2_w <<
48 50
49 int gfs2_unstuff_dinode(struct gfs2_inode *ip) !! 51 extern int gfs2_unstuff_dinode(struct gfs2_inode *ip, struct page *page);
50 int gfs2_block_map(struct inode *inode, sector !! 52 extern int gfs2_block_map(struct inode *inode, sector_t lblock,
51 struct buffer_head *bh, int !! 53 struct buffer_head *bh, int create);
52 int gfs2_iomap_get(struct inode *inode, loff_t !! 54 extern int gfs2_iomap_get_alloc(struct inode *inode, loff_t pos, loff_t length,
53 struct iomap *iomap); !! 55 struct iomap *iomap);
54 int gfs2_iomap_alloc(struct inode *inode, loff !! 56 extern int gfs2_extent_map(struct inode *inode, u64 lblock, int *new,
55 struct iomap *iomap); !! 57 u64 *dblock, unsigned *extlen);
56 int gfs2_get_extent(struct inode *inode, u64 l !! 58 extern int gfs2_setattr_size(struct inode *inode, u64 size);
57 unsigned int *extlen); !! 59 extern void gfs2_trim_blocks(struct inode *inode);
58 int gfs2_alloc_extent(struct inode *inode, u64 !! 60 extern int gfs2_truncatei_resume(struct gfs2_inode *ip);
59 unsigned *extlen, bool * !! 61 extern int gfs2_file_dealloc(struct gfs2_inode *ip);
60 int gfs2_setattr_size(struct inode *inode, u64 !! 62 extern int gfs2_write_alloc_required(struct gfs2_inode *ip, u64 offset,
61 int gfs2_truncatei_resume(struct gfs2_inode *i !! 63 unsigned int len);
62 int gfs2_file_dealloc(struct gfs2_inode *ip); !! 64 extern int gfs2_map_journal_extents(struct gfs2_sbd *sdp, struct gfs2_jdesc *jd);
63 int gfs2_write_alloc_required(struct gfs2_inod !! 65 extern void gfs2_free_journal_extents(struct gfs2_jdesc *jd);
64 unsigned int len !! 66 extern int __gfs2_punch_hole(struct file *file, loff_t offset, loff_t length);
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 67
69 #endif /* __BMAP_DOT_H__ */ 68 #endif /* __BMAP_DOT_H__ */
70 69
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