kernel.git/fs/nilfs2/inode.c, branch linux-2.6.37.y

nilfs2: see state of root dentry for mount check of snapshots

2010-10-23T00:24:38Z

After applied the patch that unified sb instances, root dentry of snapshots can be left in dcache even after their trees are unmounted. The orphan root dentry/inode keeps a root object, and this causes false positive of nilfs_checkpoint_is_mounted function. This resolves the issue by having nilfs_checkpoint_is_mounted test whether the root dentry is busy or not. Signed-off-by: Ryusuke Konishi

nilfs2: use iget for all metadata files

2010-10-23T00:24:38Z

This makes use of iget5_locked to allocate or get inode for metadata files to stop using own inode allocator. Signed-off-by: Ryusuke Konishi

nilfs2: allow nilfs_clear_inode to clear metadata file inodes

2010-10-23T00:24:37Z

Allows clear inode function (nilfs_clear_inode) to handle metadata files that uses bitmap-based object alloctor. DAT and ifile correspond to this. Signed-off-by: Ryusuke Konishi

nilfs2: deny write access to inodes in snapshots

2010-10-23T00:24:35Z

Snapshots of nilfs are read-only. After super block instances (sb) will be unified, nilfs will need to check write access by a way other than implicit test with IS_RDONLY(inode). This is because IS_RDONLY() refers to MS_RDONLY bit of inode->i_sb->s_flags and it will become inaccurate after the unification of sb. To prepare for the issue, this uses i_op->permission to deny write access to inodes in snapshots. Signed-off-by: Ryusuke Konishi

nilfs2: move inode count and block count into root object

2010-10-23T00:24:35Z

This moves sbi->s_inodes_count and sbi->s_blocks_count into nilfs_root object. Signed-off-by: Ryusuke Konishi

nilfs2: use root object to get ifile

2010-10-23T00:24:35Z

This rewrites functions using ifile so that they get ifile from nilfs_root object, and will remove sbi->s_ifile. Some functions that don't know the root object are extended to receive it from caller. Signed-off-by: Ryusuke Konishi

nilfs2: set pointer to root object in inodes

2010-10-23T00:24:34Z

This puts a pointer to nilfs_root object in the private part of on-memory inode, and makes nilfs_iget function pick up the inode with the same root object. Non-root inodes inherit its nilfs_root object from parent inode. That of the root inode is allocated through nilfs_attach_checkpoint() function. Signed-off-by: Ryusuke Konishi

nilfs2: remove own inode hash used for GC

2010-10-23T00:24:34Z

This uses inode hash function that vfs provides instead of the own hash table for caching gc inodes. This finally removes the own inode hash from nilfs. Signed-off-by: Ryusuke Konishi

nilfs2: use iget5_locked to get inode

2010-10-23T00:24:33Z

This uses iget5_locked instead of iget_locked so that gc cache can look up inodes with an inode number and an optional checkpoint number. Signed-off-by: Ryusuke Konishi

nilfs2: allow nilfs_dirty_inode to mark metadata file inodes dirty

2010-10-23T00:24:33Z

This allows sop->dirty_inode callback function (nilfs_dirty_inode) to handle metadata file inodes. Signed-off-by: Ryusuke Konishi