Blame view
fs/btrfs/compression.h
2.8 KB
c8b978188 Btrfs: Add zlib c... |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 |
/* * Copyright (C) 2008 Oracle. All rights reserved. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public * License v2 as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public * License along with this program; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 021110-1307, USA. */ #ifndef __BTRFS_COMPRESSION_ #define __BTRFS_COMPRESSION_ |
261507a02 btrfs: Allow to a... |
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 |
int btrfs_init_compress(void); void btrfs_exit_compress(void); int btrfs_compress_pages(int type, struct address_space *mapping, u64 start, unsigned long len, struct page **pages, unsigned long nr_dest_pages, unsigned long *out_pages, unsigned long *total_in, unsigned long *total_out, unsigned long max_out); int btrfs_decompress_biovec(int type, struct page **pages_in, u64 disk_start, struct bio_vec *bvec, int vcnt, size_t srclen); int btrfs_decompress(int type, unsigned char *data_in, struct page *dest_page, unsigned long start_byte, size_t srclen, size_t destlen); |
3a39c18d6 btrfs: Extract du... |
36 37 38 |
int btrfs_decompress_buf2page(char *buf, unsigned long buf_start, unsigned long total_out, u64 disk_start, struct bio_vec *bvec, int vcnt, |
306e16ce1 btrfs: rename var... |
39 |
unsigned long *pg_index, |
3a39c18d6 btrfs: Extract du... |
40 |
unsigned long *pg_offset); |
261507a02 btrfs: Allow to a... |
41 |
|
c8b978188 Btrfs: Add zlib c... |
42 43 44 45 46 47 48 |
int btrfs_submit_compressed_write(struct inode *inode, u64 start, unsigned long len, u64 disk_start, unsigned long compressed_len, struct page **compressed_pages, unsigned long nr_pages); int btrfs_submit_compressed_read(struct inode *inode, struct bio *bio, int mirror_num, unsigned long bio_flags); |
261507a02 btrfs: Allow to a... |
49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 |
struct btrfs_compress_op { struct list_head *(*alloc_workspace)(void); void (*free_workspace)(struct list_head *workspace); int (*compress_pages)(struct list_head *workspace, struct address_space *mapping, u64 start, unsigned long len, struct page **pages, unsigned long nr_dest_pages, unsigned long *out_pages, unsigned long *total_in, unsigned long *total_out, unsigned long max_out); int (*decompress_biovec)(struct list_head *workspace, struct page **pages_in, u64 disk_start, struct bio_vec *bvec, int vcnt, size_t srclen); int (*decompress)(struct list_head *workspace, unsigned char *data_in, struct page *dest_page, unsigned long start_byte, size_t srclen, size_t destlen); }; extern struct btrfs_compress_op btrfs_zlib_compress; |
a6fa6fae4 btrfs: Add lzo co... |
80 |
extern struct btrfs_compress_op btrfs_lzo_compress; |
261507a02 btrfs: Allow to a... |
81 |
|
c8b978188 Btrfs: Add zlib c... |
82 |
#endif |