changelog

来自「winNT技术操作系统,国外开放的原代码和LIUX一样」· 代码 · 共 803 行 · 第 1/3 页

	- Move definition of ntfs_inode_state_bits to fs/ntfs/inode.h and
	  do some macro magic (adapted from include/linux/buffer_head.h) to
	  expand all the helper functions NInoFoo(), NInoSetFoo(), and
	  NInoClearFoo().
	- Add new flag to ntfs_inode_state_bits: NI_Sparse.
	- Add new fields to ntfs_inode structure to allow use of fake inodes
	  for attribute i/o: type, name, name_len. Also add new state bits:
	  NI_Attr, which, if set, indicates the inode is a fake inode, and
	  NI_MstProtected, which, if set, indicates the attribute uses multi
	  sector transfer protection, i.e. fixups need to be applied after
	  reads and before/after writes.
	- Rename fs/ntfs/inode.c::ntfs_{new,clear,destroy}_inode() to
	  ntfs_{new,clear,destroy}_extent_inode() and update callers.
	- Use ntfs_clear_extent_inode() in fs/ntfs/inode.c::__ntfs_clear_inode()
	  instead of ntfs_destroy_extent_inode().
	- Cleanup memory deallocations in {__,}ntfs_clear_{,big_}inode().
	- Make all operations on ntfs inode state bits use the NIno* functions.
	- Set up the new ntfs inode fields and state bits in
	  fs/ntfs/inode.c::ntfs_read_inode() and add appropriate cleanup of
	  allocated memory to __ntfs_clear_inode().
	- Cleanup ntfs_inode structure a bit for better ordering of elements
	  w.r.t. their size to allow better packing of the structure in memory.

2.0.10 - There can only be 2^32 - 1 inodes on an NTFS volume.

	- Add check at mount time to verify that the number of inodes on the
	  volume does not exceed 2^32 - 1, which is the maximum allowed for
	  NTFS according to Microsoft.
	- Change mft_no member of ntfs_inode structure to be unsigned long.
	  Update all users. This makes ntfs_inode->mft_no just a copy of struct
	  inode->i_ino. But we can't just always use struct inode->i_ino and
	  remove mft_no because extent inodes do not have an attached struct
	  inode.

2.0.9 - Decompression engine now uses a single buffer and other cleanups.

	- Change decompression engine to use a single buffer protected by a
	  spin lock instead of per-CPU buffers. (Rusty Russell)
	- Do not update cb_pos when handling a partial final page during
	  decompression of a sparse compression block, as the value is later
	  reset without being read/used. (Rusty Russell)
	- Switch to using the new KM_BIO_SRC_IRQ for atomic kmap()s. (Andrew
	  Morton)
	- Change buffer size in ntfs_readdir()/ntfs_filldir() to use
	  NLS_MAX_CHARSET_SIZE which makes the buffers almost 1kiB each but
	  it also makes everything safer so it is a good thing.
	- Miscellaneous minor cleanups to comments.

2.0.8 - Major updates for handling of case sensitivity and dcache aliasing.

	Big thanks go to Al Viro and other inhabitants of #kernel for investing
	their time to discuss the case sensitivity and dcache aliasing issues.

	- Remove unused source file fs/ntfs/attraops.c.
	- Remove show_inodes mount option(s), thus dropping support for
	  displaying of short file names.
	- Remove deprecated mount option posix.
	- Restore show_sys_files mount option.
	- Add new mount option case_sensitive, to determine if the driver
	  treats file names as case sensitive or not. If case sensitive, create
	  file names in the POSIX namespace. Otherwise create file names in the
	  LONG/WIN32 namespace. Note, files remain accessible via their short
	  file name, if it exists.
	- Remove really dumb logic bug in boot sector recovery code.
	- Fix dcache aliasing issues wrt short/long file names via changes
	  to fs/ntfs/dir.c::ntfs_lookup_inode_by_name() and
	  fs/ntfs/namei.c::ntfs_lookup():
	  - Add additional argument to ntfs_lookup_inode_by_name() in which we
	    return information about the matching file name if the case is not
	    matching or the match is a short file name. See comments above the
	    function definition for details.
	  - Change ntfs_lookup() to only create dcache entries for the correctly
	    cased file name and only for the WIN32 namespace counterpart of DOS
	    namespace file names. This ensures we have only one dentry per
	    directory and also removes all dcache aliasing issues between short
	    and long file names once we add write support. See comments above
	    function for details.
	- Fix potential 1 byte overflow in fs/ntfs/unistr.c::ntfs_ucstonls().

2.0.7 - Minor cleanups and updates for changes in core kernel code.

	- Remove much of the NULL struct element initializers.
	- Various updates to make compatible with recent kernels.
	- Remove defines of MAX_BUF_PER_PAGE and include linux/buffer_head.h
	  in fs/ntfs/ntfs.h instead.
	- Remove no longer needed KERNEL_VERSION checks. We are now in the
	  kernel proper so they are no longer needed.

2.0.6 - Major bugfix to make compatible with other kernel changes.

	- Initialize the mftbmp address space properly now that there are more
	  fields in the struct address_space. This was leading to hangs and
	  oopses on umount since 2.5.12 because of changes to other parts of
	  the kernel. We probably want a kernel generic init_address_space()
	  function...
	- Drop BKL from ntfs_readdir() after consultation with Al Viro. The
	  only caller of ->readdir() is vfs_readdir() which holds i_sem during
	  the call, and i_sem is sufficient protection against changes in the
	  directory inode (including ->i_size).
	- Use generic_file_llseek() for directories (as opposed to
	  default_llseek()) as this downs i_sem instead of the BKL which is
	  what we now need for exclusion against ->f_pos changes considering we
	  no longer take the BKL in ntfs_readdir().

2.0.5 - Major bugfix. Buffer overflow in extent inode handling.

	- No need to set old blocksize in super.c::ntfs_fill_super() as the
	  VFS does so via invocation of deactivate_super() calling
	  fs->fill_super() calling block_kill_super() which does it.
	- BKL moved from VFS into dir.c::ntfs_readdir(). (Linus Torvalds)
	  -> Do we really need it? I don't think so as we have exclusion on
	  the directory ntfs_inode rw_semaphore mrec_lock. We mmight have to
	  move the ->f_pos accesses under the mrec_lock though. Check this...
	- Fix really, really, really stupid buffer overflow in extent inode
	  handling in mft.c::map_extent_mft_record().

2.0.4 - Cleanups and updates for kernel 2.5.11.

	- Add documentation on how to use the MD driver to be able to use NTFS
	  stripe and volume sets in Linux and generally cleanup documentation
	  a bit.
	Remove all uses of kdev_t in favour of struct block_device *:
	- Change compress.c::ntfs_file_read_compressed_block() to use
	  sb_getblk() instead of getblk().
	- Change super.c::ntfs_fill_super() to use bdev_hardsect_size() instead
	  of get_hardsect_size().
	- No need to get old blocksize in super.c::ntfs_fill_super() as
	  fs/super.c::get_sb_bdev() already does this.
	- Set bh->b_bdev instead of bh->b_dev throughout aops.c.

2.0.3 - Small bug fixes, cleanups, and performance improvements.

	- Remove some dead code from mft.c.
	- Optimize readpage and read_block functions throughout aops.c so that
	  only initialized blocks are read. Non-initialized ones have their
	  buffer head mapped, zeroed, and set up to date, without scheduling
	  any i/o. Thanks to Al Viro for advice on how to avoid the device i/o.
	Thanks go to Andrew Morton for spotting the below:
	- Fix buglet in allocate_compression_buffers() error code path.
	- Call flush_dcache_page() after modifying page cache page contents in
	  ntfs_file_readpage().
	- Check for existence of page buffers throughout aops.c before calling
	  create_empty_buffers(). This happens when an I/O error occurs and the
	  read is retried. (It also happens once writing is implemented so that
	  needed doing anyway but I had left it for later...)
	- Don't BUG_ON() uptodate and/or mapped buffers throughout aops.c in
	  readpage and read_block functions. Reasoning same as above (i.e. I/O
	  error retries and future write code paths.)

2.0.2 - Minor updates and cleanups.

	- Cleanup: rename mst.c::__post_read_mst_fixup to post_write_mst_fixup
	  and cleanup the code a bit, removing the unused size parameter.
	- Change default fmask to 0177 and update documentation.
	- Change attrib.c::get_attr_search_ctx() to return the search context
	  directly instead of taking the address of a pointer. A return value
	  of NULL means the allocation failed. Updated all callers
	  appropriately.
	- Update to 2.5.9 kernel (preserving backwards compatibility) by
	  replacing all occurences of page->buffers with page_buffers(page).
	- Fix minor bugs in run list merging, also minor cleanup.
	- Updates to bootsector layout and mft mirror contents descriptions.
	- Small bug fix in error detection in unistr.c and some cleanups.
	- Grow name buffer allocations in unistr.c in aligned mutlipled of 64
	  bytes.

2.0.1 - Minor updates.

	- Make default umask correspond to documentation.
	- Improve documentation.
	- Set default mode to include execute bit. The {u,f,d}mask can be used
	  to take it away if desired. This allows binaries to be executed from
	  a mounted ntfs partition.

2.0.0 - New version number. Remove TNG from the name. Now in the kernel.

	- Add kill_super, just keeping up with the vfs changes in the kernel.
	- Repeat some changes from tng-0.0.8 that somehow got lost on the way
	  from the CVS import into BitKeeper.
	- Begin to implement proper handling of allocated_size vs
	  initialized_size vs data_size (i.e. i_size). Done are
	  mft.c::ntfs_mft_readpage(), aops.c::end_buffer_read_index_async(),
	  and attrib.c::load_attribute_list().
	- Lock the run list in attrib.c::load_attribute_list() while using it.
	- Fix memory leak in ntfs_file_read_compressed_block() and generally
	  clean up compress.c a little, removing some uncommented/unused debug
	  code.
	- Tidy up dir.c a little bit.
	- Don't bother getting the run list in inode.c::ntfs_read_inode().
	- Merge mft.c::ntfs_mft_readpage() and aops.c::ntfs_index_readpage()
	  creating aops.c::ntfs_mst_readpage(), improving the handling of
	  holes and overflow in the process and implementing the correct
	  equivalent of ntfs_file_get_block() in ntfs_mst_readpage() itself.
	  I am aiming for correctness at the moment. Modularisation can come
	  later.
	- Rename aops.c::end_buffer_read_index_async() to
	  end_buffer_read_mst_async() and optimize the overflow checking and
	  handling.
	- Use the host of the mftbmp address space mapping to hold the ntfs
	  volume. This is needed so the async i/o completion handler can
	  retrieve a pointer to the volume. Hopefully this will not cause
	  problems elsewhere in the kernel... Otherwise will need to use a
	  fake inode.
	- Complete implementation of proper handling of allocated_size vs
	  initialized_size vs data_size (i.e. i_size) in whole driver.
	  Basically aops.c is now completely rewritten.
	- Change NTFS driver name to just NTFS and set version number to 2.0.0
	  to make a clear distinction from the old driver which is still on
	  version 1.1.22.

tng-0.0.8 - 08/03/2002 - Now using BitKeeper, http://linux-ntfs.bkbits.net/

	- Replace bdevname(sb->s_dev) with sb->s_id.
	- Remove now superfluous new-line characters in all callers of
	  ntfs_debug().
	- Apply kludge in ntfs_read_inode(), setting i_nlink to 1 for
	  directories. Without this the "find" utility gets very upset which is
	  fair enough as Linux/Unix do not support directory hard links.
	- Further run list merging work. (Richard Russon)
	- Backwards compatibility for gcc-2.95. (Richard Russon)
	- Update to kernel 2.5.5-pre1 and rediff the now tiny patch.
	- Convert to new file system declaration using ->ntfs_get_sb() and
	  replacing ntfs_read_super() with ntfs_fill_super().
	- Set s_maxbytes to MAX_LFS_FILESIZE to avoid page cache page index
	  overflow on 32-bit architectures.
	- Cleanup upcase loading code to use ntfs_(un)map_page().
	- Disable/reenable preemtion in critical sections of compession engine.
	- Replace device size determination in ntfs_fill_super() with
	  sb->s_bdev->bd_inode->i_size (in bytes) and remove now superfluous
	  function super.c::get_nr_blocks().
	- Implement a mount time option (show_inodes) allowing choice of which
	  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]
		long:	same as win32
	  	dos:	short file names only (excluding POSIX file names)
		short:	same as dos
		posix:	same as both win32 and dos
	  	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:
		-o show_inodes=all
	  Note that the "posix" and "all" options will show all directory
	  names, BUT the link count on each directory inode entry is set to 1,
	  due to Linux not supporting directory hard links. This may well
	  confuse some userspace applications, since the directory names will
	  have the same inode numbers. Thus it is NOT advisable to use the
	  "posix" or "all" options. We provide them only for completeness sake.
	- Add copies of allocated_size, initialized_size, and compressed_size to
	  the ntfs inode structure and set them up in
	  inode.c::ntfs_read_inode(). These reflect the unnamed data attribute
	  for files and the index allocation attribute for directories.
	- Add copies of allocated_size and initialized_size to ntfs inode for
	  $BITMAP attribute of large directories and set them up in
	  inode.c::ntfs_read_inode().
	- Add copies of allocated_size and initialized_size to ntfs volume for
	  $BITMAP attribute of $MFT and set them up in
	  super.c::load_system_files().
	- Parse deprecated ntfs driver options (iocharset, show_sys_files,
	  posix, and utf8) and tell user what the new options to use are. Note
	  we still do support them but they will be removed with kernel 2.7.x.
	- Change all occurences of integer long long printf formatting to hex
	  as printk() will not support long long integer format if/when the
	  div64 patch goes into the kernel.
	- Make slab caches have stable names and change the names to what they