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authorVyacheslav Dubeyko <slava@dubeyko.com>2013-07-03 18:08:05 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2013-07-03 19:08:01 -0400
commitc7ef972c440fc9f1eda28b450cd30ad15c4d60cf (patch)
tree5f415ed5b082632848cae6e5798a8ac986e0ed38 /fs/nilfs2/ifile.h
parente88b815e011bcacb7066f1156ce390f6b0adc9df (diff)
nilfs2: implement calculation of free inodes count
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>
Diffstat (limited to 'fs/nilfs2/ifile.h')
-rw-r--r--fs/nilfs2/ifile.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/nilfs2/ifile.h b/fs/nilfs2/ifile.h
index 59b6f2b51df6..679674d13372 100644
--- a/fs/nilfs2/ifile.h
+++ b/fs/nilfs2/ifile.h
@@ -49,6 +49,8 @@ int nilfs_ifile_create_inode(struct inode *, ino_t *, struct buffer_head **);
49int nilfs_ifile_delete_inode(struct inode *, ino_t); 49int nilfs_ifile_delete_inode(struct inode *, ino_t);
50int nilfs_ifile_get_inode_block(struct inode *, ino_t, struct buffer_head **); 50int nilfs_ifile_get_inode_block(struct inode *, ino_t, struct buffer_head **);
51 51
52int nilfs_ifile_count_free_inodes(struct inode *, u64 *, u64 *);
53
52int nilfs_ifile_read(struct super_block *sb, struct nilfs_root *root, 54int nilfs_ifile_read(struct super_block *sb, struct nilfs_root *root,
53 size_t inode_size, struct nilfs_inode *raw_inode, 55 size_t inode_size, struct nilfs_inode *raw_inode,
54 struct inode **inodep); 56 struct inode **inodep);