path: root/fs/ntfs/ChangeLog

ToDo/Notes:
	- Find and fix bugs.
	- The only places in the kernel where a file is resized are
	  ntfs_file_write*() and ntfs_truncate() for both of which i_mutex is
	  held.  Just have to be careful in read-/writepage and other helpers
	  not running under i_mutex that we play nice.  Also need to be careful
	  with initialized_size extension in ntfs_file_write*() and writepage.
	  UPDATE: The only things that need to be checked are the compressed
	  write and the other attribute resize/write cases like index
	  attributes, etc.  For now none of these are implemented so are safe.
	- Implement filling in of holes in aops.c::ntfs_writepage() and its
	  helpers.
	- Implement mft.c::sync_mft_mirror_umount().  We currently will just
	  leave the volume dirty on umount if the final iput(vol->mft_ino)
	  causes a write of any mirrored mft records due to the mft mirror
	  inode having been discarded already.  Whether this can actually ever
	  happen is unclear however so it is worth waiting until someone hits
	  the problem.

2.1.29 - Fix a deadlock at mount time.

	- During mount the VFS holds s_umount lock on the superblock.  So when
	  we try to empty the journal $LogFile contents by calling
	  ntfs_attr_set() when the machine does not have much memory and the
	  journal is large ntfs_attr_set() results in the VM trying to balance
	  dirty pages which in turn tries to that the s_umount lock and thus we
	  get a deadlock.  The solution is to not use ntfs_attr_set() and
	  instead do the zeroing by hand at the block level rather than page
	  cache level.
	- Fix sparse warnings.

2.1.28 - Fix a deadlock.

	- Fix deadlock in fs/ntfs/inode.c::ntfs_put_inode().  Thanks to Sergey
	  Vlasov for the report and detailed analysis of the deadlock.  The fix
	  involved getting rid of ntfs_put_inode() altogether and hence NTFS no
	  longer has a ->put_inode super operation.

2.1.27 - Various bug fixes and cleanups.

	- Fix two compiler warnings on Alpha.  Thanks to Andrew Morton for
	  reporting them.
	- Fix an (innocent) off-by-one error in the runlist code.
	- Fix a buggette in an "should be impossible" case handling where we
	  continued the attribute lookup loop instead of aborting it.
	- Use buffer_migrate_page() for the ->migratepage function of all ntfs
	  address space operations.
	- Fix comparison of $MFT and $MFTMirr to not bail out when there are
	  unused, invalid mft records which are the same in both $MFT and
	  $MFTMirr.
	- Add support for sparse files which have a compression unit