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[Dazuko-devel] missing VFS-calls in DazukoFS
From: |
John Ogness |
Subject: |
[Dazuko-devel] missing VFS-calls in DazukoFS |
Date: |
Sat, 26 Jun 2010 11:47:11 +0200 |
User-agent: |
Gnus/5.11 (Gnus v5.11) Emacs/22.2 (gnu/linux) |
Hi,
In January 2010 I went through to see how "complete" DazukoFS is as a
stackable filesytem. To do this, I looked at the VFS-calls used by the
following filesystems:
ext2,ext3,ext4,xfs,isofs,reiserfs,nfs,cifs,smbfs,tmpfs
and checked to see if DazukoFS stacked all of these VFS-calls. Below
is a list of the VFS-calls that DazukoFS does _not_ stack along with
the filesystems that use those calls. I suppose you could view this as
a TODO list for DazukoFS.
(Note: This was performed in January 2010, so things may have changed
since then.)
dentry_operations
.d_delete smbfs,nfs
.i_put nfs
file_operations
.lock cifs
.setlease cifs,nfs
.unlocked_ioctl cifs,ext2,ext3,ext4,xfs
.compat_ioctl ext2,ext3,ext4,reiserfs,xfs
.splice_write ext2,ext3,ext4,reiserfs,xfs,nfs,tmpfs
.open_exec xfs
.check_flags nfs
inode_operations
.getattr cifs,ext4,smbfs,xfs,nfs
.truncate ext2,ext4,reiserfs,xfs,tmpfs
.check_acl ext2,ext3,ext4,xfs,tmpfs
.fiemap ext2,ext4,xfs
.fallocate ext4,xfs
address_space_operations (lang, weil DazukoFS kein mmap-write kann)
.readpages cifs,ext2,ext3,ext4,reiserfs,xfs,nfs
.writepages cifs,ext2,ext4,xfs,nfs
.write_end cifs,ext2,ext3,ext4,reiserfs,smbfs,xfs,nfs,tmpfs
.set_page_dirty cifs,ext3,ext4,reiserfs,nfs,tmpfs
.sync_page ext2,ext3,ext4,isofs,reiserfs,xfs
.bmap ext2,ext3,ext4,isofs,reiserfs,xfs
.direct_IO ext2,ext3,ext4,reiserfs,xfs,nfs
.migrate_page ext2,ext3,ext4,xfs,nfs,tmpfs
.is_partially_uptodate ext2,ext3,ext4,xfs
.error_remove_page ext2,ext3,ext4,xfs,nfs,tmpfs
.get_xip_mem ext2
.invalidatepage ext3,ext4,reiserfs,xfs,nfs
.releasepage ext3,ext4,reiserfs,xfs,nfs
.launder_page nfs
This is only a list of the VFS-calls that DazukoFS does not stack
upon. It does not include the list of VFS-calls that DazukoFS stacks
incorrectly. ;-)
John Ogness
--
Dazuko Maintainer
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