You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
47 lines
1.7 KiB
47 lines
1.7 KiB
/*
|
|
* 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_
|
|
|
|
int btrfs_zlib_decompress(unsigned char *data_in,
|
|
struct page *dest_page,
|
|
unsigned long start_byte,
|
|
size_t srclen, size_t destlen);
|
|
int btrfs_zlib_compress_pages(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_zlib_decompress_biovec(struct page **pages_in,
|
|
u64 disk_start,
|
|
struct bio_vec *bvec,
|
|
int vcnt,
|
|
size_t srclen);
|
|
void btrfs_zlib_exit(void);
|
|
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);
|
|
#endif
|
|
|