| Koji Sato | 6c98cd4 | 2009-04-06 19:01:32 -0700 | [diff] [blame^] | 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 */ |