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c7ef972c44
Currently, NILFS2 returns 0 as free inodes count (f_ffree) and current used inodes count as total file nodes in file system (f_files): df -i Filesystem Inodes IUsed IFree IUse% Mounted on /dev/loop0 2 2 0 100% /mnt/nilfs2 This patch implements real calculation of free inodes count. First of all, it is calculated total file nodes in file system as (desc_blocks_count * groups_per_desc_block * entries_per_group). Then, it is calculated free inodes count as difference the total file nodes and used inodes count. As a result, we have such output for NILFS2: df -i Filesystem Inodes IUsed IFree IUse% Mounted on /dev/loop0 4194304 2114701 2079603 51% /mnt/nilfs2 Reported-by: Clemens Eisserer <linuxhippy@gmail.com> Signed-off-by: Vyacheslav Dubeyko <slava@dubeyko.com> Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Tested-by: Vyacheslav Dubeyko <slava@dubeyko.com> Cc: Joern Engel <joern@logfs.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
59 lines
1.9 KiB
C
59 lines
1.9 KiB
C
/*
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* ifile.h - NILFS inode file
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*
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* Copyright (C) 2006-2008 Nippon Telegraph and Telephone Corporation.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Written by Amagai Yoshiji <amagai@osrg.net>
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* Revised by Ryusuke Konishi <ryusuke@osrg.net>
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*
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*/
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#ifndef _NILFS_IFILE_H
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#define _NILFS_IFILE_H
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#include <linux/fs.h>
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#include <linux/buffer_head.h>
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#include <linux/nilfs2_fs.h>
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#include "mdt.h"
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#include "alloc.h"
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static inline struct nilfs_inode *
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nilfs_ifile_map_inode(struct inode *ifile, ino_t ino, struct buffer_head *ibh)
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{
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void *kaddr = kmap(ibh->b_page);
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return nilfs_palloc_block_get_entry(ifile, ino, ibh, kaddr);
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}
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static inline void nilfs_ifile_unmap_inode(struct inode *ifile, ino_t ino,
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struct buffer_head *ibh)
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{
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kunmap(ibh->b_page);
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}
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int nilfs_ifile_create_inode(struct inode *, ino_t *, struct buffer_head **);
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int nilfs_ifile_delete_inode(struct inode *, ino_t);
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int nilfs_ifile_get_inode_block(struct inode *, ino_t, struct buffer_head **);
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int nilfs_ifile_count_free_inodes(struct inode *, u64 *, u64 *);
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int nilfs_ifile_read(struct super_block *sb, struct nilfs_root *root,
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size_t inode_size, struct nilfs_inode *raw_inode,
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struct inode **inodep);
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#endif /* _NILFS_IFILE_H */
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