microblaze: Fix "kstack=" parsing
[linux-2.6.git] / fs / btrfs / compression.h
1 /*
2  * Copyright (C) 2008 Oracle.  All rights reserved.
3  *
4  * This program is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU General Public
6  * License v2 as published by the Free Software Foundation.
7  *
8  * This program is distributed in the hope that it will be useful,
9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
11  * General Public License for more details.
12  *
13  * You should have received a copy of the GNU General Public
14  * License along with this program; if not, write to the
15  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
16  * Boston, MA 021110-1307, USA.
17  */
18
19 #ifndef __BTRFS_COMPRESSION_
20 #define __BTRFS_COMPRESSION_
21
22 int btrfs_zlib_decompress(unsigned char *data_in,
23                           struct page *dest_page,
24                           unsigned long start_byte,
25                           size_t srclen, size_t destlen);
26 int btrfs_zlib_compress_pages(struct address_space *mapping,
27                               u64 start, unsigned long len,
28                               struct page **pages,
29                               unsigned long nr_dest_pages,
30                               unsigned long *out_pages,
31                               unsigned long *total_in,
32                               unsigned long *total_out,
33                               unsigned long max_out);
34 int btrfs_zlib_decompress_biovec(struct page **pages_in,
35                               u64 disk_start,
36                               struct bio_vec *bvec,
37                               int vcnt,
38                               size_t srclen);
39 void btrfs_zlib_exit(void);
40 int btrfs_submit_compressed_write(struct inode *inode, u64 start,
41                                   unsigned long len, u64 disk_start,
42                                   unsigned long compressed_len,
43                                   struct page **compressed_pages,
44                                   unsigned long nr_pages);
45 int btrfs_submit_compressed_read(struct inode *inode, struct bio *bio,
46                                  int mirror_num, unsigned long bio_flags);
47 #endif