1 /* 2 * sufile.h - NILFS segment usage file. 3 * 4 * Copyright (C) 2006-2008 Nippon Telegraph and Telephone Corporation. 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 19 * 20 * Written by Koji Sato <koji@osrg.net>. 21 */ 22 23 #ifndef _NILFS_SUFILE_H 24 #define _NILFS_SUFILE_H 25 26 #include <linux/fs.h> 27 #include <linux/buffer_head.h> 28 #include <linux/nilfs2_fs.h> 29 #include "mdt.h" 30 31 #define NILFS_SUFILE_GFP NILFS_MDT_GFP 32 33 static inline unsigned long nilfs_sufile_get_nsegments(struct inode *sufile) 34 { 35 return NILFS_MDT(sufile)->mi_nilfs->ns_nsegments; 36 } 37 38 int nilfs_sufile_alloc(struct inode *, __u64 *); 39 int nilfs_sufile_cancel_free(struct inode *, __u64); 40 int nilfs_sufile_freev(struct inode *, __u64 *, size_t); 41 int nilfs_sufile_free(struct inode *, __u64); 42 int nilfs_sufile_get_segment_usage(struct inode *, __u64, 43 struct nilfs_segment_usage **, 44 struct buffer_head **); 45 void nilfs_sufile_put_segment_usage(struct inode *, __u64, 46 struct buffer_head *); 47 int nilfs_sufile_get_stat(struct inode *, struct nilfs_sustat *); 48 int nilfs_sufile_get_ncleansegs(struct inode *, unsigned long *); 49 int nilfs_sufile_set_error(struct inode *, __u64); 50 ssize_t nilfs_sufile_get_suinfo(struct inode *, __u64, struct nilfs_suinfo *, 51 size_t); 52 53 54 #endif /* _NILFS_SUFILE_H */ 55