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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /fs/befs/ChangeLog
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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+Version 0.92 (2002-03-29)
+==========
+* Minor cleanup. Ran Lindent on the sources.
+
+Version 0.92 (2002-03-27)
+==========
+* Fixed module makefile problem. It was not compiling all the correct
+ source files!
+* Removed duplicated function definition
+* Fixed potential null pointer dereference when reporting an error
+
+Version 0.91 (2002-03-26)
+==========
+* Oy! Fixed stupid bug that would cause an unresolved symbol error.
+ Thanks to Laszlo Boszormenyi for pointing this out to me.
+
+Version 0.9 (2002-03-14)
+==========
+* Added Sergey S. Kostyliov's patch to eliminate memcpy() overhead
+ from b+tree operations. Changes the befs_read_datastream() interface.
+
+* Segregated the functions that interface directly with the linux vfs
+ interface into their own file called linuxvfs.c. [WD]
+
+Version 0.64 (2002-02-07)
+==========
+* Did the string comparision really right this time (btree.c) [WD]
+
+* Fixed up some places where I assumed that a long int could hold
+ a pointer value. (btree.c) [WD]
+
+* Andrew Farnham <andrewfarnham@uq.net.au> pointed out that the module
+ wouldn't work on older (<2.4.10) kernels due to an unresolved symbol.
+ This is bad, since 2.4.9 is still the current RedHat kernel. I added
+ a workaround for this problem (compatibility.h) [WD]
+
+* Sergey S. Kostyliov made befs_find_key() use a binary search to find
+ keys within btree nodes, rather than the linear search we were using
+ before. (btree.c) [Sergey S. Kostyliov <rathamahata@php4.ru>]
+
+* Made a debian package of the source for use with kernel-package. [WD]
+
+
+Version 0.63 (2002-01-31)
+==========
+* Fixed bug in befs_find_brun_indirect() that would result in the wrong
+ block being read. It was introduced when adding byteswapping in
+ 0.61. (datastream.c) [WD]
+
+* Fixed a longstanding bug in befs_find_key() that would result in it
+ finding the first key that is a substring of the string it is searching
+ for. For example, this would cause files in the same directory with
+ names like file1 and file2 to mysteriously be duplicates of each other
+ (because they have the same inode number). Many thanks to Pavel Roskin
+ for reporting this serious bug!!!
+ (btree.c) [WD]
+
+* Added support for long symlinks, after Axel Dorfler explained up how
+ they work. I had forgotten all about them. (inode.c, symlink.c) [WD]
+
+* Documentation improvements in source. [WD]
+
+* Makefile fix for independent module when CONFIG_MODVERSION is set in
+ kernel config [Pavel Roskin <proski@gnu.org>]
+
+* Compile warning fix for namei.c. [Sergey S. Kostyliov <rathamahata@php4.ru>]
+
+
+Version 0.62
+==========
+* Fixed makefile for module install [WD]
+
+
+Version 0.61 (2002-01-20)
+==========
+* Made functions in endian.h to do the correct byteswapping, no matter
+ the arch. [WD]
+
+* Abbandoned silly checks for a NULL superblock pointer in debug.c. [WD]
+
+* Misc code cleanups. Also cleanup of this changelog file. [WD]
+
+* Added byteswapping to all metadata reads from disk.
+ Uses the functions from endian.h [WD]
+
+* Remove the typedef of struct super_block to vfs_sb, as it offended
+ certain peoples' aesthetic sense. [WD]
+
+* Ditto with the befs_read_block() interface. [WD]
+
+
+Version 0.6 (2001-12-15)
+==========
+* Cleanup of NLS functions (util.c) [WD]
+
+* Make directory lookup/read use the NLS if an iocharset is provided. [WD]
+
+* Fixed stupid bug where specifying the uid or gid mount options as '0'
+ would result in the filesystem using the on-disk uid and gid. [WD]
+
+* Added mount option to control debug printing.
+ The option is, simply enough, 'debug'.
+ (super.c, debug.c) [WD]
+
+* Removed notion of btree handle from btree.c. It was unnecessary, as the
+ linux VFS doesn't allow us to keep any state between calls. Updated
+ dir.c, namei.c befs_fs.h to account for it. [WD]
+
+* Improved handleing of overflow nodes when listing directories.
+ Now works for overflow nodes hanging off of nodes other than the root
+ node. This is the cleaner solution to Brent Miszalaski's problem. [WD]
+
+* Added new debug/warning/error print functions in debug.c.
+ More flexible. Will soon be controllable at mount time
+ (see TODO). [WD]
+
+* Rewrote datastream positon lookups.
+ (datastream.c) [WD]
+
+* Moved the TODO list to its own file.
+
+
+Version 0.50 (2001-11-13)
+==========
+* Added workaround for mis-understanding of the nature of the b+trees used
+ in directories. A cleaner solution will come after I've thought about it
+ for a while. Thanks to Brent Miszalaski for finding and reporting this bug.
+ (btree.c) [WD]
+
+* Minor cleanups
+
+* Added test for "impossible" condition of empty internal nodes in
+ seekleaf() in btree.c [WD]
+
+* Implemented the abstracted read_block() in io.c [WD]
+
+* Cleaned up the inode validation in inode.c [WD]
+
+* Anton Altaparmakov figured out (by asking Linus :) ) what was causing the
+ hanging disk io problem. It turns out you need to have the sync_pages
+ callback defined in your address_space_ops, even if it just uses the
+ default linux-supplied implementation. Fixed. Works now.
+ (file.c) [WD]
+
+* Anton Altaparmakov and Christoph Hellwig alerted me to the fact that
+ filesystem code should be using GFP_NOFS instead of GFP_KERNEL as the
+ priority parameter to kmalloc(). Fixed.
+ (datastream.c, btree.c super.c inode.c) [WD]
+
+* Anton also told me that the blocksize is not allowed to be larger than
+ the page size in linux, which is 4k i386. Oops. Added a test for
+ (blocksize > PAGE_SIZE), and refuse to mount in that case. What this
+ practicaly means is that 8k blocksize volumes won't work without a major
+ restructuring of the driver (or an alpha or other 64bit hardware). [WD]
+
+* Cleaned up the befs_count_blocks() function. Much smarter now.
+ And somewhat smaller too. [WD]
+
+* Made inode allocations use a slab cache
+ (super.c inode.c) [WD]
+
+* Moved the freeing of the private inode section from put_inode() to
+ clear_inode(). This fixes a potential free twice type bug. Put_inode()
+ can be called multiple times for each inode struct. [WD]
+
+* Converted all non vfs-callback functions to use befs_sb_info as the
+ superblock type, rather than struct super_block. This is for
+ portablity. [WD]
+
+* Fixed a couple of compile warnings due to use of malloc.h, when slab.h
+ is the new way. (inode.c, super.c) [WD]
+
+* Fixed erronous includes of linux/befs_fs_i.h and linux/befs_fs_sb.h
+ in inode.c [WD]
+
+Version 0.45 (2001-10-29)
+==========
+* Added functions to get the private superblock and inode structures from
+ their enclosing public structures. Switched all references to the
+ private portions to use them. (many files) [WD]
+
+* Made read_super and read_inode allocate the private portions of those
+ structures into the generic pointer fields of the public structures
+ with kmalloc(). put_super and put_inode free them. This allows us not
+ to have to touch the definitions of the public structures in
+ include/linux/fs.h. Also, befs_inode_info is huge (becuase of the
+ symlink string). (super.c, inode.c, befs_fs.h) [WD]
+
+* Fixed a thinko that was corrupting file reads after the first block_run
+ is done being read. (datastream.c) [WD]
+
+* Removed fsync() hooks, since a read-only filesystem doesn't need them.
+ [Christoph Hellwig].
+
+* Fixed befs_readlink() (symlink.c) [Christoph Hellwig].
+
+* Removed all the Read-Write stuff. I'll redo it when it is time to add
+ write support (various files) [WD].
+
+* Removed prototypes for functions who's definitions have been removed
+ (befs_fs.h) [WD].
+
+
+Version 0.4 (2001-10-28)
+==========
+* Made it an option to use the old non-pagecache befs_file_read() for
+ testing purposes. (fs/Config.in)
+
+* Fixed unused variable warnings when compiling without debugging.
+
+* Fixed a bug where the inode and super_block didn't get their blockbits
+ fields set (inode.c and super.c).
+
+* Release patch version 11. AKA befs-driver version 0.4.
+
+* Thats right. New versioning scheme.
+ I've done some serious testing on it now (on my box anyhow), and it
+ seems stable and not outragously slow. Existing features are more-or-less
+ correct (see TODO list). But it isn't 1.0 yet. I think 0.4 gives me some
+ headroom before the big 1.0.
+
+
+2001-10-26
+==========
+* Fixed date format in this file. Was I smoking crack?
+
+* Removed old datastream code from file.c, since it is nolonger used.
+
+* Generic_read_file() is now used to read regular file data.
+ It doesn't chew up the buffer cache (it does page io instead), and seems
+ to be about as fast (even though it has to look up each file block
+ indivdualy). And it knows about doing readahead, which is a major plus.
+ So it does i/o in much larger chunks. It is the correct linux way. It
+ uses befs_get_block() by way of befs_readpage() to find the disk offsets
+ of blocks, which in turn calls befs_fpos2brun() in datastream.c to do
+ the hard work of finding the disk block number.
+
+* Changed method of checking for a dirty filesystem in befs_read_super
+ (super.c). Now we check to see if log_start and log_end differ. If so,
+ the journal needs to be replayed, and the filesystem cannot be mounted.
+
+* Fixed an extra instance of MOD_DEC_USE_COUNT in super.c
+
+* Fixed a problem with reading the superblock on devices with large sector
+ sizes (such as cdroms) on linux 2.4.10 and up.
+
+2001-10-24
+==========
+* Fix nasty bug in converting block numbers to struct befs_inode_addr.
+ Subtle, because the old version was only sometimes wrong.
+ Probably responsible for lots of problems. (inode.c)
+
+* Fix bug with reading an empty directory. (btree.c and dir.c)
+
+* This one looks good. Release patch version 10
+
+2001-10-23
+==========
+* Added btree searching function.
+
+* Use befs_btree_find in befs_lookup (namei.c)
+
+* Additional comments in btree.c
+
+2001-10-22
+==========
+* Added B+tree reading functions (in btree.c).
+ Made befs_readdir() use them them instead of the cruft in index.c.
+
+2001-09-11
+==========
+* Converted befs_read_file() to use the new datastream code.
+
+* Finally updated the README file.
+
+* Added many comments.
+
+* Posted version 6
+
+* Removed byte-order conversion code.
+ I have no intention of supporting it, and it was very ugly.
+ Flow control with #ifdef (ugh). Maybe I'll redo it once
+ native byteorder works 100%.
+
+2001-09-10
+==========
+* Finished implementing read_datastream()
+
+* made befs_read_brun() more general
+ Supports an offset to start at and a max bytes to read
+ Added a wrapper function to give the old call
+
+2001-09-30
+==========
+* Discovered that the datastream handleing code in file.c is quite deficient
+ in several respects. For one thing, it doesn't deal with indirect blocks
+
+* Rewrote datastream handleing.
+
+* Created io.c, for io related functions.
+ Previously, the befs_bread() funtions lived in file.c
+ Created the befs_read_brun() function.
+
+
+2001-09-07
+==========
+* Made a function to actually count the number of fs blocks used by a file.
+ And helper functions.
+ (fs/befs/inode.c)
+
+2001-09-05
+==========
+* Fixed a misunderstanding of the inode fields.
+ This fixed the problmem with wrong file sizes from du and others.
+ The i_blocks field of the inode struct is not the number of blocks for the
+ inode, it is the number of blocks for the file. Also, i_blksize is not
+ necessarily the size of the inode, although in practice it works out.
+ Changed to blocksize of filesystem.
+ (fs/befs/inode.c)
+
+* Permanently removed code that had been provisionally ifdefed out of befs_fs.h
+
+* Since we don't support access time, make that field zero, instead of
+ copying m_time.
+ (fs/befs/inode.c)
+
+* Added sanity check for inode reading
+ Make sure inode we got was the one we asked for.
+ (fs/befs/inode.c)
+
+* Code cleanup
+ Local pointers to commonly used structures in inode.c.
+ Got rid of abominations befs_iaddr2inode() and befs_inode2ino().
+ Replaced with single function iaddr2blockno().
+ (fs/befs/super.c) (fs/befs/inode.c)
+
+2001-09-01
+==========
+* Fixed the problem with statfs where it would always claim the disk was
+ half full, due to improper understanding of the statfs fields.
+ (fs/befs/super.c)
+
+* Posted verion 4 of the patch
+
+2001-09-01
+==========
+* Changed the macros in befs_fs.h to inline functions.
+ More readable. Typesafe. Better
+ (include/linux/befs_fs.h)
+
+* Moved type definitions from befs_fs.h to a new file, befs_fs_types.h
+ Because befs_fs_i.h and befs_fs_sb.h were including befs_fs.h for the
+ typedefs, and they are inlcuded in <linux/fs.h>, which has definitions
+ that I want the inline functions in befs_fs.h to be able to see. Nasty
+ circularity.
+ (include/linux/befs_fs.h)
+
+2001-08-30
+==========
+* Cleaned up some wording.
+
+* Added additional consitency checks on mount
+ Check block_size agrees with block_shift
+ Check flags == BEFS_CLEAN
+ (fs/befs/super.c)
+
+* Tell the kernel to only mount befs read-only.
+ By setting the MS_RDONLY flag in befs_read_super().
+ Not that it was possible to write before. But now the kernel won't even try.
+ (fs/befs/super.c)
+
+* Got rid of kernel warning on mount.
+ The kernel doesn't like it if you call set_blocksize() on a device when
+ you have some of its blocks open. Moved the second set_blocksize() to the
+ very end of befs_read_super(), after we are done with the disk superblock.
+ (fs/befs/super.c)
+
+* Fixed wrong number of args bug in befs_dump_inode
+ (fs/befs/debug.c)
+
+* Solved lots of type mismatches in kprint()s
+ (everwhere)
+
+2001-08-27
+==========
+* Cleaned up the fs/Config.in entries a bit, now slightly more descriptive.
+
+* BeFS depends on NLS, so I made activating BeFS enable the NLS questions
+ (fs/nls/Config.in)
+
+* Added Configure.help entries for CONFIG_BEFS_FS and CONFIG_DEBUG_BEFS
+ (Documentation/Configure.help)
+
+2001-08-??
+==========
+* Removed superblock locking calls in befs_read_super(). In 2.4, the VFS
+ hands us a super_block struct that is already locked.
+
+2001-08-13
+==========
+* Will Dyson <will_dyson@pobox.com> is now attempting to maintain this module
+ Makoto Kato <m_kato@ga2.so-net.ne.jp> is original author.Daniel Berlin
+ also did some work on it (fixing it up for the later 2.3.x kernels, IIRC).
+
+* Fixed compile errors on 2.4.1 kernel (WD)
+ Resolve rejected patches
+ Accomodate changed NLS interface (util.h)
+ Needed to include <linux/slab.h> in most files
+ Makefile changes
+ fs/Config.in changes
+
+* Tried to niceify the code using the ext2 fs as a guide
+ Declare befs_fs_type using the DECLARE_FSTYPE_DEV() macro
+
+* Made it a configure option to turn on debugging (fs/Config.in)
+
+* Compiles on 2.4.7