-ToDo:
+ToDo/Notes:
- Find and fix bugs.
+ - Either invalidate quotas or update the quota charges on NTFS 3.x
+ volumes with quota tracking enabled ($Quota).
+ - Checkpoint or disable the user space journal ($UsnJrnl).
- Implement aops->set_page_dirty() in order to take control of buffer
dirtying. Not having it means if page_has_buffers(), all buffers
will be dirtied with the page. And if not they won't be. That is
fine for the moment but will break once we enable metadata updates.
- - Implement sops->dirty_inode() to implement {a,m,c} time updates and
- such things.
- - Implement sops->write_inode().
+ For now just always using __set_page_dirty_nobuffers() for metadata
+ pages as nothing can dirty a page other than ourselves. Should this
+ change, we will really need to roll our own ->set_page_dirty().
+ - Implement sops->dirty_inode() to implement {a,m,c}time updates and
+ such things. This should probably just flag the ntfs inode such that
+ sops->write_inode(), i.e. ntfs_write_inode(), will copy the times
+ when it is invoked rather than having to update the mft record
+ every time.
- In between ntfs_prepare/commit_write, need exclusion between
simultaneous file extensions. Need perhaps an NInoResizeUnderway()
flag which we can set in ntfs_prepare_write() and clear again in
OTOH, perhaps i_sem, which is held accross generic_file_write is
sufficient for synchronisation here. We then just need to make sure
ntfs_readpage/writepage/truncate interoperate properly with us.
-
-2.1.8 - Handle $MFT mirror and $LogFile, improve time ihandling, and cleanups.
+ - 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.
+ - Enable the code for setting the NT4 compatibility flag when we start
+ making NTFS 1.2 specific modifications.
+
+2.1.14 - Fix an NFSd caused deadlock reported by several users.
+
+ - Modify fs/ntfs/ntfs_readdir() to copy the index root attribute value
+ to a buffer so that we can put the search context and unmap the mft
+ record before calling the filldir() callback. We need to do this
+ because of NFSd which calls ->lookup() from its filldir callback()
+ and this causes NTFS to deadlock as ntfs_lookup() maps the mft record
+ of the directory and since ntfs_readdir() has got it mapped already
+ ntfs_lookup() deadlocks.
+
+2.1.13 - Enable overwriting of resident files and housekeeping of system files.
+
+ - Implement writing of mft records (fs/ntfs/mft.[hc]), which includes
+ keeping the mft mirror in sync with the mft when mirrored mft records
+ are written. The functions are write_mft_record{,_nolock}(). The
+ implementation is quite rudimentary for now with lots of things not
+ implemented yet but I am not sure any of them can actually occur so
+ I will wait for people to hit each one and only then implement it.
+ - Commit open system inodes at umount time. This should make it
+ virtually impossible for sync_mft_mirror_umount() to ever be needed.
+ - Implement ->write_inode (fs/ntfs/inode.c::ntfs_write_inode()) for the
+ ntfs super operations. This gives us inode writing via the VFS inode
+ dirty code paths. Note: Access time updates are not implemented yet.
+ - Implement fs/ntfs/mft.[hc]::{,__}mark_mft_record_dirty() and make
+ fs/ntfs/aops.c::ntfs_writepage() and ntfs_commit_write() use it, thus
+ finally enabling resident file overwrite! (-8 This also includes a
+ placeholder for ->writepage (ntfs_mft_writepage()), which for now
+ just redirties the page and returns. Also, at umount time, we for
+ now throw away all mft data page cache pages after the last call to
+ ntfs_commit_inode() in the hope that all inodes will have been
+ written out by then and hence no dirty (meta)data will be lost. We
+ also check for this case and emit an error message telling the user
+ to run chkdsk.
+ - Use set_page_writeback() and end_page_writeback() in the resident
+ attribute code path of fs/ntfs/aops.c::ntfs_writepage() otherwise
+ the radix-tree tag PAGECACHE_TAG_DIRTY remains set even though the
+ page is clean.
+ - Implement ntfs_mft_writepage() so it now checks if any of the mft
+ records in the page are dirty and if so redirties the page and
+ returns. Otherwise it just returns (after doing set_page_writeback(),
+ unlock_page(), end_page_writeback() or the radix-tree tag
+ PAGECACHE_TAG_DIRTY remains set even though the page is clean), thus
+ alowing the VM to do with the page as it pleases. Also, at umount
+ time, now only throw away dirty mft (meta)data pages if dirty inodes
+ are present and ask the user to email us if they see this happening.
+ - Add functions ntfs_{clear,set}_volume_flags(), to modify the volume
+ information flags (fs/ntfs/super.c).
+ - Mark the volume dirty when (re)mounting read-write and mark it clean
+ when unmounting or remounting read-only. If any volume errors are
+ found, the volume is left marked dirty to force chkdsk to run.
+ - Add code to set the NT4 compatibility flag when (re)mounting
+ read-write for newer NTFS versions but leave it commented out for now
+ since we do not make any modifications that are NTFS 1.2 specific yet
+ and since setting this flag breaks Captive-NTFS which is not nice.
+ This code must be enabled once we start writing NTFS 1.2 specific
+ changes otherwise Windows NTFS driver might crash / cause corruption.
+
+2.1.12 - Fix the second fix to the decompression engine and some cleanups.
+
+ - Add a new address space operations struct, ntfs_mst_aops, for mst
+ protected attributes. This is because the default ntfs_aops do not
+ make sense with mst protected data and were they to write anything to
+ such an attribute they would cause data corruption so we provide
+ ntfs_mst_aops which does not have any write related operations set.
+ - Cleanup dirty ntfs inode handling (fs/ntfs/inode.[hc]) which also
+ includes an adapted ntfs_commit_inode() and an implementation of
+ ntfs_write_inode() which for now just cleans dirty inodes without
+ writing them (it does emit a warning that this is happening).
+ - Undo the second decompression engine fix (see 2.1.9 release ChangeLog
+ entry) as it was only fixing a theoretical bug but at the same time
+ it badly broke the handling of sparse and uncompressed compression
+ blocks.
+
+2.1.11 - Driver internal cleanups.
+
+ - Only build logfile.o if building the driver with read-write support.
+ - Really final white space cleanups.
+ - Use generic_ffs() instead of ffs() in logfile.c which allows the
+ log_page_size variable to be optimized by gcc into a constant.
+ - Rename uchar_t to ntfschar everywhere as uchar_t is unsigned 1-byte
+ char as defined by POSIX and as found on some systems.
+
+2.1.10 - Force read-only (re)mounting of volumes with unsupported volume flags.
+
+ - Finish off the white space cleanups (remove trailing spaces, etc).
+ - Clean up ntfs_fill_super() and ntfs_read_inode_mount() by removing
+ the kludges around the first iget(). Instead of (re)setting ->s_op
+ we have the $MFT inode set up by explicit new_inode() / set ->i_ino /
+ insert_inode_hash() / call ntfs_read_inode_mount() directly. This
+ kills the need for second super_operations and allows to return error
+ from ntfs_read_inode_mount() without resorting to ugly "poisoning"
+ tricks. (Al Viro)
+ - Force read-only (re)mounting if any of the following bits are set in
+ the volume information flags:
+ VOLUME_IS_DIRTY, VOLUME_RESIZE_LOG_FILE,
+ VOLUME_UPGRADE_ON_MOUNT, VOLUME_DELETE_USN_UNDERWAY,
+ VOLUME_REPAIR_OBJECT_ID, VOLUME_MODIFIED_BY_CHKDSK
+ To make this easier we define VOLUME_MUST_MOUNT_RO_MASK with all the
+ above bits set so the test is made easy.
+
+2.1.9 - Fix two bugs in decompression engine.
+
+ - Fix a bug where we would not always detect that we have reached the
+ end of a compression block because we were ending at minus one byte
+ which is effectively the same as being at the end. The fix is to
+ check whether the uncompressed buffer has been fully filled and if so
+ we assume we have reached the end of the compression block. A big
+ thank you to Marcin GibuĊa for the bug report, the assistance in
+ tracking down the bug and testing the fix.
+ - Fix a possible bug where when a compressed read is truncated to the
+ end of the file, the offset inside the last page was not truncated.
+
+2.1.8 - Handle $MFT mirror and $LogFile, improve time handling, and cleanups.
- Use get_bh() instead of manual atomic_inc() in fs/ntfs/compress.c.
- Modify fs/ntfs/time.c::ntfs2utc(), get_current_ntfs_time(), and
types of inode names readdir() returns and modify ntfs_filldir()
accordingly. There are several parameters to show_inodes:
system: system files
- win32: long file names (including POSIX file names) [DEFAULT]
+ win32: long file names (including POSIX file names) [DEFAULT]
long: same as win32
- dos: short file names only (excluding POSIX file names)
+ dos: short file names only (excluding POSIX file names)
short: same as dos
posix: same as both win32 and dos
- all: all file names
+ all: all file names
Note that the options are additive, i.e. specifying:
-o show_inodes=system,show_inodes=win32,show_inodes=dos
is the same as specifying:
working nicely, too. Proof of inode metadata in the page cache and non-
resident file unnamed stream data in the page cache concepts is thus
complete.
-
git://git.onelab.eu / linux-2.6.git / blobdiff