| /* |
| * 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 |