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