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> <<
11 <<
12 #include "inode.h" 13 #include "inode.h"
13 14
14 struct inode; 15 struct inode;
15 struct gfs2_inode; 16 struct gfs2_inode;
16 struct page; 17 struct page;
17 18
18 19
19 /** 20 /**
20 * gfs2_write_calc_reserv - calculate number o 21 * gfs2_write_calc_reserv - calculate number of blocks needed to write to a file
21 * @ip: the file 22 * @ip: the file
22 * @len: the number of bytes to be written to 23 * @len: the number of bytes to be written to the file
23 * @data_blocks: returns the number of data bl 24 * @data_blocks: returns the number of data blocks required
24 * @ind_blocks: returns the number of indirect 25 * @ind_blocks: returns the number of indirect blocks required
25 * 26 *
26 */ 27 */
27 28
28 static inline void gfs2_write_calc_reserv(cons 29 static inline void gfs2_write_calc_reserv(const struct gfs2_inode *ip,
29 unsi 30 unsigned int len,
30 unsi 31 unsigned int *data_blocks,
31 unsi 32 unsigned int *ind_blocks)
32 { 33 {
33 const struct gfs2_sbd *sdp = GFS2_SB(& 34 const struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
34 unsigned int tmp; 35 unsigned int tmp;
35 36
36 BUG_ON(gfs2_is_dir(ip)); 37 BUG_ON(gfs2_is_dir(ip));
37 *data_blocks = (len >> sdp->sd_sb.sb_b 38 *data_blocks = (len >> sdp->sd_sb.sb_bsize_shift) + 3;
38 *ind_blocks = 3 * (sdp->sd_max_height 39 *ind_blocks = 3 * (sdp->sd_max_height - 1);
39 40
40 for (tmp = *data_blocks; tmp > sdp->sd 41 for (tmp = *data_blocks; tmp > sdp->sd_diptrs;) {
41 tmp = DIV_ROUND_UP(tmp, sdp->s 42 tmp = DIV_ROUND_UP(tmp, sdp->sd_inptrs);
42 *ind_blocks += tmp; 43 *ind_blocks += tmp;
43 } 44 }
44 } 45 }
45 46
46 extern const struct iomap_ops gfs2_iomap_ops; !! 47 extern int gfs2_unstuff_dinode(struct gfs2_inode *ip, struct page *page);
47 extern const struct iomap_writeback_ops gfs2_w !! 48 extern int gfs2_block_map(struct inode *inode, sector_t lblock,
48 !! 49 struct buffer_head *bh, int create);
49 int gfs2_unstuff_dinode(struct gfs2_inode *ip) !! 50 extern int gfs2_extent_map(struct inode *inode, u64 lblock, int *new,
50 int gfs2_block_map(struct inode *inode, sector !! 51 u64 *dblock, unsigned *extlen);
51 struct buffer_head *bh, int !! 52 extern int gfs2_setattr_size(struct inode *inode, u64 size);
52 int gfs2_iomap_get(struct inode *inode, loff_t !! 53 extern void gfs2_trim_blocks(struct inode *inode);
53 struct iomap *iomap); !! 54 extern int gfs2_truncatei_resume(struct gfs2_inode *ip);
54 int gfs2_iomap_alloc(struct inode *inode, loff !! 55 extern int gfs2_file_dealloc(struct gfs2_inode *ip);
55 struct iomap *iomap); !! 56 extern int gfs2_write_alloc_required(struct gfs2_inode *ip, u64 offset,
56 int gfs2_get_extent(struct inode *inode, u64 l !! 57 unsigned int len);
57 unsigned int *extlen); !! 58 extern int gfs2_map_journal_extents(struct gfs2_sbd *sdp, struct gfs2_jdesc *jd);
58 int gfs2_alloc_extent(struct inode *inode, u64 !! 59 extern void gfs2_free_journal_extents(struct gfs2_jdesc *jd);
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 60
69 #endif /* __BMAP_DOT_H__ */ 61 #endif /* __BMAP_DOT_H__ */
70 62
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.