1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0+ */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * direct.h - NILFS direct block pointer. 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * Copyright (C) 2006-2008 Nippon Telegraph and Telephone Corporation. 6*4882a593Smuzhiyun * 7*4882a593Smuzhiyun * Written by Koji Sato. 8*4882a593Smuzhiyun */ 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun #ifndef _NILFS_DIRECT_H 11*4882a593Smuzhiyun #define _NILFS_DIRECT_H 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun #include <linux/types.h> 14*4882a593Smuzhiyun #include <linux/buffer_head.h> 15*4882a593Smuzhiyun #include "bmap.h" 16*4882a593Smuzhiyun 17*4882a593Smuzhiyun 18*4882a593Smuzhiyun #define NILFS_DIRECT_NBLOCKS (NILFS_BMAP_SIZE / sizeof(__le64) - 1) 19*4882a593Smuzhiyun #define NILFS_DIRECT_KEY_MIN 0 20*4882a593Smuzhiyun #define NILFS_DIRECT_KEY_MAX (NILFS_DIRECT_NBLOCKS - 1) 21*4882a593Smuzhiyun 22*4882a593Smuzhiyun 23*4882a593Smuzhiyun int nilfs_direct_init(struct nilfs_bmap *); 24*4882a593Smuzhiyun int nilfs_direct_delete_and_convert(struct nilfs_bmap *, __u64, __u64 *, 25*4882a593Smuzhiyun __u64 *, int); 26*4882a593Smuzhiyun 27*4882a593Smuzhiyun 28*4882a593Smuzhiyun #endif /* _NILFS_DIRECT_H */ 29