1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* 3 * Copyright (C) 2019 HUAWEI, Inc. 4 * http://www.huawei.com/ 5 * Created by Gao Xiang <gaoxiang25@huawei.com> 6 */ 7 #ifndef __EROFS_COMPRESS_H 8 #define __EROFS_COMPRESS_H 9 10 #ifdef __cplusplus 11 extern "C" 12 { 13 #endif 14 15 #include "internal.h" 16 17 /* workaround for an upstream lz4 compression issue, which can crash us */ 18 /* #define EROFS_CONFIG_COMPR_MAX_SZ (1024 * 1024) */ 19 #define EROFS_CONFIG_COMPR_MAX_SZ (900 * 1024) 20 #define EROFS_CONFIG_COMPR_MIN_SZ (32 * 1024) 21 22 int erofs_write_compressed_file(struct erofs_inode *inode); 23 24 int z_erofs_compress_init(struct erofs_buffer_head *bh); 25 int z_erofs_compress_exit(void); 26 27 const char *z_erofs_list_available_compressors(unsigned int i); 28 29 #ifdef __cplusplus 30 } 31 #endif 32 33 #endif 34