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Based on kernel version 4.13.3. Page generated on 2017-09-23 13:55 EST.

1	Version 1.62
2	------------
3	Add sockopt=TCP_NODELAY mount option. EA (xattr) routines hardened
4	to more strictly handle corrupt frames.
6	Version 1.61
7	------------
8	Fix append problem to Samba servers (files opened with O_APPEND could
9	have duplicated data). Fix oops in cifs_lookup. Workaround problem
10	mounting to OS/400 Netserve. Fix oops in cifs_get_tcp_session.
11	Disable use of server inode numbers when server only
12	partially supports them (e.g. for one server querying inode numbers on
13	FindFirst fails but QPathInfo queries works). Fix oops with dfs in 
14	cifs_put_smb_ses. Fix mmap to work on directio mounts (needed
15	for OpenOffice when on forcedirectio mount e.g.)
17	Version 1.60
18	-------------
19	Fix memory leak in reconnect.  Fix oops in DFS mount error path.
20	Set s_maxbytes to smaller (the max that vfs can handle) so that
21	sendfile will now work over cifs mounts again.  Add noforcegid
22	and noforceuid mount parameters. Fix small mem leak when using
23	ntlmv2. Fix 2nd mount to same server but with different port to
24	be allowed (rather than reusing the 1st port) - only when the
25	user explicitly overrides the port on the 2nd mount.
27	Version 1.59
28	------------
29	Client uses server inode numbers (which are persistent) rather than
30	client generated ones by default (mount option "serverino" turned
31	on by default if server supports it).  Add forceuid and forcegid
32	mount options (so that when negotiating unix extensions specifying
33	which uid mounted does not immediately force the server's reported
34	uids to be overridden).  Add support for scope mount parm. Improve
35	hard link detection to use same inode for both.  Do not set
36	read-only dos attribute on directories (for chmod) since Windows
37	explorer special cases this attribute bit for directories for
38	a different purpose.
40	Version 1.58
41	------------
42	Guard against buffer overruns in various UCS-2 to UTF-8 string conversions
43	when the UTF-8 string is composed of unusually long (more than 4 byte) converted
44	characters. Add support for mounting root of a share which redirects immediately
45	to DFS target. Convert string conversion functions from Unicode to more
46	accurately mark string length before allocating memory (which may help the
47	rare cases where a UTF-8 string is much larger than the UCS2 string that
48	we converted from).  Fix endianness of the vcnum field used during
49	session setup to distinguish multiple mounts to same server from different
50	userids. Raw NTLMSSP fixed (it requires /proc/fs/cifs/experimental
51	flag to be set to 2, and mount must enable krb5 to turn on extended security).
52	Performance of file create to Samba improved (posix create on lookup
53	removes 1 of 2 network requests sent on file create)
55	Version 1.57
56	------------
57	Improve support for multiple security contexts to the same server. We
58	used to use the same "vcnumber" for all connections which could cause
59	the server to treat subsequent connections, especially those that
60	are authenticated as guest, as reconnections, invalidating the earlier
61	user's smb session.  This fix allows cifs to mount multiple times to the
62	same server with different userids without risking invalidating earlier
63	established security contexts.  fsync now sends SMB Flush operation
64	to better ensure that we wait for server to write all of the data to
65	server disk (not just write it over the network).  Add new mount
66	parameter to allow user to disable sending the (slow) SMB flush on
67	fsync if desired (fsync still flushes all cached write data to the server).
68	Posix file open support added (turned off after one attempt if server
69	fails to support it properly, as with Samba server versions prior to 3.3.2)
70	Fix "redzone overwritten" bug in cifs_put_tcon (CIFSTcon may allocate too
71	little memory for the "nativeFileSystem" field returned by the server
72	during mount).  Endian convert inode numbers if necessary (makes it easier
73	to compare inode numbers on network files from big endian systems). 
75	Version 1.56
76	------------
77	Add "forcemandatorylock" mount option to allow user to use mandatory
78	rather than posix (advisory) byte range locks, even though server would
79	support posix byte range locks.  Fix query of root inode when prefixpath
80	specified and user does not have access to query information about the
81	top of the share.  Fix problem in 2.6.28 resolving DFS paths to
82	Samba servers (worked to Windows).  Fix rmdir so that pending search
83	(readdir) requests do not get invalid results which include the now
84	removed directory.  Fix oops in cifs_dfs_ref.c when prefixpath is not reachable
85	when using DFS.  Add better file create support to servers which support
86	the CIFS POSIX protocol extensions (this adds support for new flags
87	on create, and improves semantics for write of locked ranges).
89	Version 1.55
90	------------
91	Various fixes to make delete of open files behavior more predictable
92	(when delete of an open file fails we mark the file as "delete-on-close"
93	in a way that more servers accept, but only if we can first rename the
94	file to a temporary name).  Add experimental support for more safely
95	handling fcntl(F_SETLEASE).  Convert cifs to using blocking tcp
96	sends, and also let tcp autotune the socket send and receive buffers.
97	This reduces the number of EAGAIN errors returned by TCP/IP in
98	high stress workloads (and the number of retries on socket writes
99	when sending large SMBWriteX requests).  Fix case in which a portion of
100	data can in some cases not get written to the file on the server before the
101	file is closed.  Fix DFS parsing to properly handle path consumed field,
102	and to handle certain codepage conversions better.  Fix mount and
103	umount race that can cause oops in mount or umount or reconnect.
105	Version 1.54
106	------------
107	Fix premature write failure on congested networks (we would give up
108	on EAGAIN from the socket too quickly on large writes).
109	Cifs_mkdir and cifs_create now respect the setgid bit on parent dir.
110	Fix endian problems in acl (mode from/to cifs acl) on bigendian
111	architectures.  Fix problems with preserving timestamps on copying open
112	files (e.g. "cp -a") to Windows servers.  For mkdir and create honor setgid bit
113	on parent directory when server supports Unix Extensions but not POSIX
114	create. Update cifs.upcall version to handle new Kerberos sec flags
115	(this requires update of cifs.upcall program from Samba).  Fix memory leak
116	on dns_upcall (resolving DFS referralls).  Fix plain text password
117	authentication (requires setting SecurityFlags to 0x30030 to enable
118	lanman and plain text though).  Fix writes to be at correct offset when
119	file is open with O_APPEND and file is on a directio (forcediretio) mount.
120	Fix bug in rewinding readdir directory searches.  Add nodfs mount option.
122	Version 1.53
123	------------
124	DFS support added (Microsoft Distributed File System client support needed
125	for referrals which enable a hierarchical name space among servers).
126	Disable temporary caching of mode bits to servers which do not support
127	storing of mode (e.g. Windows servers, when client mounts without cifsacl
128	mount option) and add new "dynperm" mount option to enable temporary caching
129	of mode (enable old behavior).  Fix hang on mount caused when server crashes
130	tcp session during negotiate protocol.
132	Version 1.52
133	------------
134	Fix oops on second mount to server when null auth is used.
135	Enable experimental Kerberos support.  Return writebehind errors on flush
136	and sync so that events like out of disk space get reported properly on
137	cached files. Fix setxattr failure to certain Samba versions. Fix mount
138	of second share to disconnected server session (autoreconnect on this).
139	Add ability to modify cifs acls for handling chmod (when mounted with
140	cifsacl flag). Fix prefixpath path separator so we can handle mounts
141	with prefixpaths longer than one directory (one path component) when
142	mounted to Windows servers.  Fix slow file open when cifsacl
143	enabled. Fix memory leak in FindNext when the SMB call returns -EBADF.
146	Version 1.51
147	------------
148	Fix memory leak in statfs when mounted to very old servers (e.g.
149	Windows 9x).  Add new feature "POSIX open" which allows servers
150	which support the current POSIX Extensions to provide better semantics
151	(e.g. delete for open files opened with posix open).  Take into
152	account umask on posix mkdir not just older style mkdir.  Add
153	ability to mount to IPC$ share (which allows CIFS named pipes to be
154	opened, read and written as if they were files).  When 1st tree
155	connect fails (e.g. due to signing negotiation failure) fix
156	leak that causes cifsd not to stop and rmmod to fail to cleanup
157	cifs_request_buffers pool. Fix problem with POSIX Open/Mkdir on
158	bigendian architectures. Fix possible memory corruption when
159	EAGAIN returned on kern_recvmsg. Return better error if server
160	requires packet signing but client has disabled it. When mounted
161	with cifsacl mount option - mode bits are approximated based
162	on the contents of the ACL of the file or directory. When cifs
163	mount helper is missing convert make sure that UNC name 
164	has backslash (not forward slash) between ip address of server
165	and the share name.
167	Version 1.50
168	------------
169	Fix NTLMv2 signing. NFS server mounted over cifs works (if cifs mount is
170	done with "serverino" mount option).  Add support for POSIX Unlink
171	(helps with certain sharing violation cases when server such as
172	Samba supports newer POSIX CIFS Protocol Extensions). Add "nounix"
173	mount option to allow disabling the CIFS Unix Extensions for just
174	that mount. Fix hang on spinlock in find_writable_file (race when
175	reopening file after session crash).  Byte range unlock request to
176	windows server could unlock more bytes (on server copy of file)
177	than intended if start of unlock request is well before start of
178	a previous byte range lock that we issued.
180	Version 1.49
181	------------
182	IPv6 support.  Enable ipv6 addresses to be passed on mount (put the ipv6
183	address after the "ip=" mount option, at least until mount.cifs is fixed to
184	handle DNS host to ipv6 name translation).  Accept override of uid or gid
185	on mount even when Unix Extensions are negotiated (it used to be ignored
186	when Unix Extensions were ignored).  This allows users to override the
187	default uid and gid for files when they are certain that the uids or
188	gids on the server do not match those of the client.  Make "sec=none"
189	mount override username (so that null user connection is attempted)
190	to match what documentation said. Support for very large reads, over 127K,
191	available to some newer servers (such as Samba 3.0.26 and later but
192	note that it also requires setting CIFSMaxBufSize at module install
193	time to a larger value which may hurt performance in some cases).
194	Make sign option force signing (or fail if server does not support it).
196	Version 1.48
197	------------
198	Fix mtime bouncing around from local idea of last write times to remote time.
199	Fix hang (in i_size_read) when simultaneous size update of same remote file
200	on smp system corrupts sequence number. Do not reread unnecessarily partial page
201	(which we are about to overwrite anyway) when writing out file opened rw.
202	When DOS attribute of file on non-Unix server's file changes on the server side
203	from read-only back to read-write, reflect this change in default file mode
204	(we had been leaving a file's mode read-only until the inode were reloaded).
205	Allow setting of attribute back to ATTR_NORMAL (removing readonly dos attribute
206	when archive dos attribute not set and we are changing mode back to writeable
207	on server which does not support the Unix Extensions).  Remove read only dos
208	attribute on chmod when adding any write permission (ie on any of
209	user/group/other (not all of user/group/other ie  0222) when
210	mounted to windows.  Add support for POSIX MkDir (slight performance
211	enhancement and eliminates the network race between the mkdir and set 
212	path info of the mode).
215	Version 1.47
216	------------
217	Fix oops in list_del during mount caused by unaligned string.
218	Fix file corruption which could occur on some large file
219	copies caused by writepages page i/o completion bug.
220	Seek to SEEK_END forces check for update of file size for non-cached
221	files. Allow file size to be updated on remote extend of locally open,
222	non-cached file.  Fix reconnect to newer Samba servers (or other servers
223	which support the CIFS Unix/POSIX extensions) so that we again tell the
224	server the Unix/POSIX cifs capabilities which we support (SetFSInfo).
225	Add experimental support for new POSIX Open/Mkdir (which returns
226	stat information on the open, and allows setting the mode).
228	Version 1.46
229	------------
230	Support deep tree mounts.  Better support OS/2, Win9x (DOS) time stamps.
231	Allow null user to be specified on mount ("username="). Do not return
232	EINVAL on readdir when filldir fails due to overwritten blocksize
233	(fixes FC problem).  Return error in rename 2nd attempt retry (ie report
234	if rename by handle also fails, after rename by path fails, we were
235	not reporting whether the retry worked or not). Fix NTLMv2 to
236	work to Windows servers (mount with option "sec=ntlmv2").
238	Version 1.45
239	------------
240	Do not time out lockw calls when using posix extensions. Do not
241	time out requests if server still responding reasonably fast
242	on requests on other threads.  Improve POSIX locking emulation,
243	(lock cancel now works, and unlock of merged range works even
244	to Windows servers now).  Fix oops on mount to lanman servers
245	(win9x, os/2 etc.) when null password.  Do not send listxattr
246	(SMB to query all EAs) if nouser_xattr specified.  Fix SE Linux
247	problem (instantiate inodes/dentries in right order for readdir).
249	Version 1.44
250	------------
251	Rewritten sessionsetup support, including support for legacy SMB
252	session setup needed for OS/2 and older servers such as Windows 95 and 98.
253	Fix oops on ls to OS/2 servers.  Add support for level 1 FindFirst
254	so we can do search (ls etc.) to OS/2.  Do not send NTCreateX
255	or recent levels of FindFirst unless server says it supports NT SMBs
256	(instead use legacy equivalents from LANMAN dialect). Fix to allow
257	NTLMv2 authentication support (now can use stronger password hashing
258	on mount if corresponding /proc/fs/cifs/SecurityFlags is set (0x4004).
259	Allow override of global cifs security flags on mount via "sec=" option(s).
261	Version 1.43
262	------------
263	POSIX locking to servers which support CIFS POSIX Extensions
264	(disabled by default controlled by proc/fs/cifs/Experimental).
265	Handle conversion of long share names (especially Asian languages)
266	to Unicode during mount. Fix memory leak in sess struct on reconnect.
267	Fix rare oops after acpi suspend.  Fix O_TRUNC opens to overwrite on
268	cifs open which helps rare case when setpathinfo fails or server does
269	not support it. 
271	Version 1.42
272	------------
273	Fix slow oplock break when mounted to different servers at the same time and
274	the tids match and we try to find matching fid on wrong server. Fix read
275	looping when signing required by server (2.6.16 kernel only). Fix readdir
276	vs. rename race which could cause each to hang. Return . and .. even
277	if server does not.  Allow searches to skip first three entries and
278	begin at any location. Fix oops in find_writeable_file.
280	Version 1.41
281	------------
282	Fix NTLMv2 security (can be enabled in /proc/fs/cifs) so customers can
283	configure stronger authentication.  Fix sfu symlinks so they can
284	be followed (not just recognized).  Fix wraparound of bcc on
285	read responses when buffer size over 64K and also fix wrap of
286	max smb buffer size when CIFSMaxBufSize over 64K.  Fix oops in
287	cifs_user_read and cifs_readpages (when EAGAIN on send of smb
288	on socket is returned over and over).  Add POSIX (advisory) byte range
289	locking support (requires server with newest CIFS UNIX Extensions
290	to the protocol implemented). Slow down negprot slightly in port 139
291	RFC1001 case to give session_init time on buggy servers.
293	Version 1.40
294	------------
295	Use fsuid (fsgid) more consistently instead of uid (gid). Improve performance
296	of readpages by eliminating one extra memcpy. Allow update of file size
297	from remote server even if file is open for write as long as mount is
298	directio.  Recognize share mode security and send NTLM encrypted password
299	on tree connect if share mode negotiated.
301	Version 1.39
302	------------
303	Defer close of a file handle slightly if pending writes depend on that handle
304	(this reduces the EBADF bad file handle errors that can be logged under heavy
305	stress on writes). Modify cifs Kconfig options to expose CONFIG_CIFS_STATS2 
306	Fix SFU style symlinks and mknod needed for servers which do not support the
307	CIFS Unix Extensions.  Fix setfacl/getfacl on bigendian. Timeout negative
308	dentries so files that the client sees as deleted but that later get created
309	on the server will be recognized.  Add client side permission check on setattr.
310	Timeout stuck requests better (where server has never responded or sent corrupt
311	responses)
313	Version 1.38
314	------------
315	Fix tcp socket retransmission timeouts (e.g. on ENOSPACE from the socket)
316	to be smaller at first (but increasing) so large write performance performance
317	over GigE is better.  Do not hang thread on illegal byte range lock response
318	from Windows (Windows can send an RFC1001 size which does not match smb size) by
319	allowing an SMBs TCP length to be up to a few bytes longer than it should be.
320	wsize and rsize can now be larger than negotiated buffer size if server
321	supports large readx/writex, even when directio mount flag not specified.
322	Write size will in many cases now be 16K instead of 4K which greatly helps
323	file copy performance on lightly loaded networks.  Fix oops in dnotify
324	when experimental config flag enabled. Make cifsFYI more granular.
326	Version 1.37
327	------------
328	Fix readdir caching when unlink removes file in current search buffer,
329	and this is followed by a rewind search to just before the deleted entry.
330	Do not attempt to set ctime unless atime and/or mtime change requested
331	(most servers throw it away anyway). Fix length check of received smbs
332	to be more accurate. Fix big endian problem with mapchars mount option,
333	and with a field returned by statfs.
335	Version 1.36
336	------------
337	Add support for mounting to older pre-CIFS servers such as Windows9x and ME.
338	For these older servers, add option for passing netbios name of server in
339	on mount (servernetbiosname).  Add suspend support for power management, to
340	avoid cifsd thread preventing software suspend from working.
341	Add mount option for disabling the default behavior of sending byte range lock
342	requests to the server (necessary for certain applications which break with
343	mandatory lock behavior such as Evolution), and also mount option for
344	requesting case insensitive matching for path based requests (requesting
345	case sensitive is the default).
347	Version 1.35
348	------------
349	Add writepage performance improvements.  Fix path name conversions
350	for long filenames on mounts which were done with "mapchars" mount option
351	specified.  Ensure multiplex ids do not collide.  Fix case in which 
352	rmmod can oops if done soon after last unmount.  Fix truncated
353	search (readdir) output when resume filename was a long filename.
354	Fix filename conversion when mapchars mount option was specified and
355	filename was a long filename.
357	Version 1.34
358	------------
359	Fix error mapping of the TOO_MANY_LINKS (hardlinks) case.
360	Do not oops if root user kills cifs oplock kernel thread or
361	kills the cifsd thread (NB: killing the cifs kernel threads is not
362	recommended, unmount and rmmod cifs will kill them when they are
363	no longer needed).  Fix readdir to ASCII servers (ie older servers
364	which do not support Unicode) and also require asterisk.
365	Fix out of memory case in which data could be written one page
366	off in the page cache.
368	Version 1.33
369	------------
370	Fix caching problem, in which readdir of directory containing a file
371	which was cached could cause the file's time stamp to be updated
372	without invalidating the readahead data (so we could get stale
373	file data on the client for that file even as the server copy changed).
374	Cleanup response processing so cifsd can not loop when abnormally
375	terminated.
378	Version 1.32
379	------------
380	Fix oops in ls when Transact2 FindFirst (or FindNext) returns more than one
381	transact response for an SMB request and search entry split across two frames.
382	Add support for lsattr (getting ext2/ext3/reiserfs attr flags from the server)
383	as new protocol extensions. Do not send Get/Set calls for POSIX ACLs
384	unless server explicitly claims to support them in CIFS Unix extensions
385	POSIX ACL capability bit. Fix packet signing when multiuser mounting with
386	different users from the same client to the same server. Fix oops in
387	cifs_close. Add mount option for remapping reserved characters in
388	filenames (also allow recognizing files with created by SFU which have any
389	of these seven reserved characters, except backslash, to be recognized).
390	Fix invalid transact2 message (we were sometimes trying to interpret
391	oplock breaks as SMB responses). Add ioctl for checking that the
392	current uid matches the uid of the mounter (needed by umount.cifs).
393	Reduce the number of large buffer allocations in cifs response processing
394	(significantly reduces memory pressure under heavy stress with multiple
395	processes accessing the same server at the same time).
397	Version 1.31
398	------------
399	Fix updates of DOS attributes and time fields so that files on NT4 servers
400	do not get marked delete on close. Display sizes of cifs buffer pools in
401	cifs stats. Fix oops in unmount when cifsd thread being killed by 
402	shutdown. Add generic readv/writev and aio support. Report inode numbers 
403	consistently in readdir and lookup (when serverino mount option is
404	specified use the inode number that the server reports - for both lookup
405	and readdir, otherwise by default the locally generated inode number is used
406	for inodes created in either path since servers are not always able to 
407	provide unique inode numbers when exporting multiple volumes from under one
408	sharename).
410	Version 1.30
411	------------
412	Allow new nouser_xattr mount parm to disable xattr support for user namespace.
413	Do not flag user_xattr mount parm in dmesg.  Retry failures setting file time  
414	(mostly affects NT4 servers) by retry with handle based network operation. 
415	Add new POSIX Query FS Info for returning statfs info more accurately.
416	Handle passwords with multiple commas in them.
418	Version 1.29
419	------------
420	Fix default mode in sysfs of cifs module parms.  Remove old readdir routine.
421	Fix capabilities flags for large readx so as to allow reads larger than 64K.
423	Version 1.28
424	------------
425	Add module init parm for large SMB buffer size (to allow it to be changed
426	from its default of 16K) which is especially useful for large file copy
427	when mounting with the directio mount option. Fix oops after 
428	returning from mount when experimental ExtendedSecurity enabled and
429	SpnegoNegotiated returning invalid error. Fix case to retry better when 
430	peek returns from 1 to 3 bytes on socket which should have more data.
431	Fixed path based calls (such as cifs lookup) to handle path names
432	longer than 530 (now can handle PATH_MAX). Fix pass through authentication
433	from Samba server to DC (Samba required dummy LM password).
435	Version 1.27
436	------------
437	Turn off DNOTIFY (directory change notification support) by default
438	(unless built with the experimental flag) to fix hang with KDE
439	file browser. Fix DNOTIFY flag mappings.  Fix hang (in wait_event
440	waiting on an SMB response) in SendReceive when session dies but
441	reconnects quickly from another task.  Add module init  parms for
442	minimum number of large and small network buffers in the buffer pools,
443	and for the maximum number of simultaneous requests.
445	Version 1.26
446	------------
447	Add setfacl support to allow setting of ACLs remotely to Samba 3.10 and later
448	and other POSIX CIFS compliant servers.  Fix error mapping for getfacl 
449	to EOPNOTSUPP when server does not support posix acls on the wire. Fix 
450	improperly zeroed buffer in CIFS Unix extensions set times call. 
452	Version 1.25
453	------------
454	Fix internationalization problem in cifs readdir with filenames that map to 
455	longer UTF-8 strings than the string on the wire was in Unicode.  Add workaround
456	for readdir to netapp servers. Fix search rewind (seek into readdir to return 
457	non-consecutive entries).  Do not do readdir when server negotiates 
458	buffer size to small to fit filename. Add support for reading POSIX ACLs from
459	the server (add also acl and noacl mount options).
461	Version 1.24
462	------------
463	Optionally allow using server side inode numbers, rather than client generated
464	ones by specifying mount option "serverino" - this is required for some apps
465	to work which double check hardlinked files and have persistent inode numbers.
467	Version 1.23
468	------------
469	Multiple bigendian fixes. On little endian systems (for reconnect after
470	network failure) fix tcp session reconnect code so we do not try first
471	to reconnect on reverse of port 445. Treat reparse points (NTFS junctions)
472	as directories rather than symlinks because we can do follow link on them.
474	Version 1.22
475	------------
476	Add config option to enable XATTR (extended attribute) support, mapping
477	xattr names in the "user." namespace space to SMB/CIFS EAs. Lots of
478	minor fixes pointed out by the Stanford SWAT checker (mostly missing
479	or out of order NULL pointer checks in little used error paths).
481	Version 1.21
482	------------
483	Add new mount parm to control whether mode check (generic_permission) is done
484	on the client.  If Unix extensions are enabled and the uids on the client
485	and server do not match, client permission checks are meaningless on
486	server uids that do not exist on the client (this does not affect the
487	normal ACL check which occurs on the server).  Fix default uid
488	on mknod to match create and mkdir. Add optional mount parm to allow
489	override of the default uid behavior (in which the server sets the uid
490	and gid of newly created files). Normally for network filesystem mounts
491	user want the server to set the uid/gid on newly created files (rather than 
492	using uid of the client processes you would in a local filesystem).
494	Version 1.20
495	------------
496	Make transaction counts more consistent. Merge /proc/fs/cifs/SimultaneousOps
497	info into /proc/fs/cifs/DebugData.  Fix oops in rare oops in readdir 
498	(in build_wildcard_path_from_dentry).  Fix mknod to pass type field
499	(block/char/fifo) properly.  Remove spurious mount warning log entry when
500	credentials passed as mount argument. Set major/minor device number in
501	inode for block and char devices when unix extensions enabled.
503	Version 1.19
504	------------
505	Fix /proc/fs/cifs/Stats and DebugData display to handle larger
506	amounts of return data. Properly limit requests to MAX_REQ (50
507	is the usual maximum active multiplex SMB/CIFS requests per server).
508	Do not kill cifsd (and thus hurt the other SMB session) when more than one
509	session to the same server (but with different userids) exists and one
510	of the two user's smb sessions is being removed while leaving the other.
511	Do not loop reconnecting in cifsd demultiplex thread when admin
512	kills the thread without going through unmount.
514	Version 1.18
515	------------
516	Do not rename hardlinked files (since that should be a noop). Flush
517	cached write behind data when reopening a file after session abend,
518	except when already in write. Grab per socket sem during reconnect 
519	to avoid oops in sendmsg if overlapping with reconnect. Do not
520	reset cached inode file size on readdir for files open for write on 
521	client.
524	Version 1.17
525	------------
526	Update number of blocks in file so du command is happier (in Linux a fake
527	blocksize of 512 is required for calculating number of blocks in inode).
528	Fix prepare write of partial pages to read in data from server if possible.
529	Fix race on tcpStatus field between unmount and reconnection code, causing
530	cifsd process sometimes to hang around forever. Improve out of memory
531	checks in cifs_filldir
533	Version 1.16
534	------------
535	Fix incorrect file size in file handle based setattr on big endian hardware.
536	Fix oops in build_path_from_dentry when out of memory.  Add checks for invalid
537	and closing file structs in writepage/partialpagewrite.  Add statistics
538	for each mounted share (new menuconfig option). Fix endianness problem in
539	volume information displayed in /proc/fs/cifs/DebugData (only affects
540	affects big endian architectures). Prevent renames while constructing
541	path names for open, mkdir and rmdir.
543	Version 1.15
544	------------
545	Change to mempools for alloc smb request buffers and multiplex structs
546	to better handle low memory problems (and potential deadlocks).
548	Version 1.14
549	------------
550	Fix incomplete listings of large directories on Samba servers when Unix
551	extensions enabled.  Fix oops when smb_buffer can not be allocated. Fix
552	rename deadlock when writing out dirty pages at same time.
554	Version 1.13
555	------------
556	Fix open of files in which O_CREATE can cause the mode to change in
557	some cases. Fix case in which retry of write overlaps file close.
558	Fix PPC64 build error.  Reduce excessive stack usage in smb password
559	hashing. Fix overwrite of Linux user's view of file mode to Windows servers.
561	Version 1.12
562	------------
563	Fixes for large file copy, signal handling, socket retry, buffer
564	allocation and low memory situations.
566	Version 1.11
567	------------
568	Better port 139 support to Windows servers (RFC1001/RFC1002 Session_Initialize)
569	also now allowing support for specifying client netbiosname.  NT4 support added.
571	Version 1.10
572	------------
573	Fix reconnection (and certain failed mounts) to properly wake up the
574	blocked users thread so it does not seem hung (in some cases was blocked
575	until the cifs receive timeout expired). Fix spurious error logging
576	to kernel log when application with open network files killed. 
578	Version 1.09
579	------------
580	Fix /proc/fs module unload warning message (that could be logged
581	to the kernel log). Fix intermittent failure in connectathon
582	test7 (hardlink count not immediately refreshed in case in which
583	inode metadata can be incorrectly kept cached when time near zero)
585	Version 1.08
586	------------
587	Allow file_mode and dir_mode (specified at mount time) to be enforced
588	locally (the server already enforced its own ACLs too) for servers
589	that do not report the correct mode (do not support the 
590	CIFS Unix Extensions).
592	Version 1.07
593	------------
594	Fix some small memory leaks in some unmount error paths. Fix major leak
595	of cache pages in readpages causing multiple read oriented stress
596	testcases (including fsx, and even large file copy) to fail over time. 
598	Version 1.06
599	------------
600	Send NTCreateX with ATTR_POSIX if Linux/Unix extensions negotiated with server.
601	This allows files that differ only in case and improves performance of file
602	creation and file open to such servers.  Fix semaphore conflict which causes 
603	slow delete of open file to Samba (which unfortunately can cause an oplock
604	break to self while vfs_unlink held i_sem) which can hang for 20 seconds.
606	Version 1.05
607	------------
608	fixes to cifs_readpages for fsx test case
610	Version 1.04
611	------------
612	Fix caching data integrity bug when extending file size especially when no
613	oplock on file.  Fix spurious logging of valid already parsed mount options
614	that are parsed outside of the cifs vfs such as nosuid.
617	Version 1.03
618	------------
619	Connect to server when port number override not specified, and tcp port
620	unitialized.  Reset search to restart at correct file when kernel routine
621	filldir returns error during large directory searches (readdir). 
623	Version 1.02
624	------------
625	Fix caching problem when files opened by multiple clients in which 
626	page cache could contain stale data, and write through did
627	not occur often enough while file was still open when read ahead
628	(read oplock) not allowed.  Treat "sep=" when first mount option
629	as an override of comma as the default separator between mount
630	options. 
632	Version 1.01
633	------------
634	Allow passwords longer than 16 bytes. Allow null password string.
636	Version 1.00
637	------------
638	Gracefully clean up failed mounts when attempting to mount to servers such as
639	Windows 98 that terminate tcp sessions during protocol negotiation.  Handle
640	embedded commas in mount parsing of passwords.
642	Version 0.99
643	------------
644	Invalidate local inode cached pages on oplock break and when last file
645	instance is closed so that the client does not continue using stale local
646	copy rather than later modified server copy of file.  Do not reconnect
647	when server drops the tcp session prematurely before negotiate
648	protocol response.  Fix oops in reopen_file when dentry freed.  Allow
649	the support for CIFS Unix Extensions to be disabled via proc interface.
651	Version 0.98
652	------------
653	Fix hang in commit_write during reconnection of open files under heavy load.
654	Fix unload_nls oops in a mount failure path. Serialize writes to same socket
655	which also fixes any possible races when cifs signatures are enabled in SMBs
656	being sent out of signature sequence number order.    
658	Version 0.97
659	------------
660	Fix byte range locking bug (endian problem) causing bad offset and
661	length.
663	Version 0.96
664	------------
665	Fix oops (in send_sig) caused by CIFS unmount code trying to
666	wake up the demultiplex thread after it had exited. Do not log
667	error on harmless oplock release of closed handle.
669	Version 0.95
670	------------
671	Fix unsafe global variable usage and password hash failure on gcc 3.3.1
672	Fix problem reconnecting secondary mounts to same server after session 
673	failure.  Fix invalid dentry - race in mkdir when directory gets created
674	by another client between the lookup and mkdir.
676	Version 0.94
677	------------
678	Fix to list processing in reopen_files. Fix reconnection when server hung
679	but tcpip session still alive.  Set proper timeout on socket read.
681	Version 0.93
682	------------
683	Add missing mount options including iocharset.  SMP fixes in write and open. 
684	Fix errors in reconnecting after TCP session failure.  Fix module unloading
685	of default nls codepage
687	Version 0.92
688	------------
689	Active smb transactions should never go negative (fix double FreeXid). Fix
690	list processing in file routines. Check return code on kmalloc in open.
691	Fix spinlock usage for SMP.
693	Version 0.91
694	------------
695	Fix oops in reopen_files when invalid dentry. drop dentry on server rename 
696	and on revalidate errors. Fix cases where pid is now tgid.  Fix return code
697	on create hard link when server does not support them. 
699	Version 0.90
700	------------
701	Fix scheduling while atomic error in getting inode info on newly created file. 
702	Fix truncate of existing files opened with O_CREAT but not O_TRUNC set.
704	Version 0.89
705	------------
706	Fix oops on write to dead tcp session. Remove error log write for case when file open
707	O_CREAT but not O_EXCL
709	Version 0.88
710	------------
711	Fix non-POSIX behavior on rename of open file and delete of open file by taking 
712	advantage of trans2 SetFileInfo rename facility if available on target server.
713	Retry on ENOSPC and EAGAIN socket errors.
715	Version 0.87
716	------------
717	Fix oops on big endian readdir.  Set blksize to be even power of two (2**blkbits) to fix
718	allocation size miscalculation. After oplock token lost do not read through
719	cache. 
721	Version 0.86
722	------------
723	Fix oops on empty file readahead.  Fix for file size handling for locally cached files.
725	Version 0.85
726	------------
727	Fix oops in mkdir when server fails to return inode info. Fix oops in reopen_files
728	during auto reconnection to server after server recovered from failure.
730	Version 0.84
731	------------
732	Finish support for Linux 2.5 open/create changes, which removes the
733	redundant NTCreate/QPathInfo/close that was sent during file create.
734	Enable oplock by default. Enable packet signing by default (needed to 
735	access many recent Windows servers)
737	Version 0.83
738	------------
739	Fix oops when mounting to long server names caused by inverted parms to kmalloc.
740	Fix MultiuserMount (/proc/fs/cifs configuration setting) so that when enabled
741	we will choose a cifs user session (smb uid) that better matches the local
742	uid if a) the mount uid does not match the current uid and b) we have another
743	session to the same server (ip address) for a different mount which
744	matches the current local uid.
746	Version 0.82
747	------------
748	Add support for mknod of block or character devices.  Fix oplock
749	code (distributed caching) to properly send response to oplock
750	break from server.
752	Version 0.81
753	------------
754	Finish up CIFS packet digital signing for the default
755	NTLM security case. This should help Windows 2003
756	network interoperability since it is common for
757	packet signing to be required now. Fix statfs (stat -f)
758	which recently started returning errors due to 
759	invalid value (-1 instead of 0) being set in the
760	struct kstatfs f_ffiles field.
762	Version 0.80
763	-----------
764	Fix oops on stopping oplock thread when removing cifs when
765	built as module.
767	Version 0.79
768	------------
769	Fix mount options for ro (readonly), uid, gid and file and directory mode. 
771	Version 0.78
772	------------
773	Fix errors displayed on failed mounts to be more understandable.
774	Fixed various incorrect or misleading smb to posix error code mappings.
776	Version 0.77
777	------------
778	Fix display of NTFS DFS junctions to display as symlinks.
779	They are the network equivalent.  Fix oops in 
780	cifs_partialpagewrite caused by missing spinlock protection
781	of openfile linked list.  Allow writebehind caching errors to 
782	be returned to the application at file close.
784	Version 0.76
785	------------
786	Clean up options displayed in /proc/mounts by show_options to
787	be more consistent with other filesystems.
789	Version 0.75
790	------------
791	Fix delete of readonly file to Windows servers.  Reflect
792	presence or absence of read only dos attribute in mode
793	bits for servers that do not support CIFS Unix extensions.
794	Fix shortened results on readdir of large directories to
795	servers supporting CIFS Unix extensions (caused by
796	incorrect resume key).
798	Version 0.74
799	------------
800	Fix truncate bug (set file size) that could cause hangs e.g. running fsx
802	Version 0.73
803	------------
804	unload nls if mount fails.
806	Version 0.72
807	------------
808	Add resume key support to search (readdir) code to workaround
809	Windows bug.  Add /proc/fs/cifs/LookupCacheEnable which
810	allows disabling caching of attribute information for
811	lookups.
813	Version 0.71
814	------------
815	Add more oplock handling (distributed caching code).  Remove
816	dead code.  Remove excessive stack space utilization from
817	symlink routines.
819	Version 0.70
820	------------
821	Fix oops in get dfs referral (triggered when null path sent in to
822	mount).  Add support for overriding rsize at mount time.
824	Version 0.69
825	------------
826	Fix buffer overrun in readdir which caused intermittent kernel oopses.
827	Fix writepage code to release kmap on write data.  Allow "-ip=" new 
828	mount option to be passed in on parameter distinct from the first part
829	(server name portion of) the UNC name.  Allow override of the
830	tcp port of the target server via new mount option "-port="  
832	Version 0.68
833	------------
834	Fix search handle leak on rewind.  Fix setuid and gid so that they are 
835	reflected in the local inode immediately.  Cleanup of whitespace
836	to make 2.4 and 2.5 versions more consistent.
839	Version 0.67
840	------------
841	Fix signal sending so that captive thread (cifsd) exits on umount 
842	(which was causing the warning in kmem_cache_free of the request buffers
843	at rmmod time).  This had broken as a sideeffect of the recent global
844	kernel change to daemonize.  Fix memory leak in readdir code which
845	showed up in "ls -R" (and applications that did search rewinding).
847	Version 0.66
848	------------
849	Reconnect tids and fids after session reconnection (still do not
850	reconnect byte range locks though).  Fix problem caching
851	lookup information for directory inodes, improving performance,
852	especially in deep directory trees.  Fix various build warnings.
854	Version 0.65
855	------------
856	Finish fixes to commit write for caching/readahead consistency.  fsx 
857	now works to Samba servers.  Fix oops caused when readahead
858	was interrupted by a signal.
860	Version 0.64
861	------------
862	Fix data corruption (in partial page after truncate) that caused fsx to
863	fail to Windows servers.  Cleaned up some extraneous error logging in
864	common error paths.  Add generic sendfile support.
866	Version 0.63
867	------------
868	Fix memory leak in AllocMidQEntry.
869	Finish reconnection logic, so connection with server can be dropped
870	(or server rebooted) and the cifs client will reconnect.  
872	Version 0.62
873	------------
874	Fix temporary socket leak when bad userid or password specified 
875	(or other SMBSessSetup failure).  Increase maximum buffer size to slightly
876	over 16K to allow negotiation of up to Samba and Windows server default read 
877	sizes.  Add support for readpages
879	Version 0.61
880	------------
881	Fix oops when username not passed in on mount.  Extensive fixes and improvements
882	to error logging (strip redundant newlines, change debug macros to ensure newline
883	passed in and to be more consistent).  Fix writepage wrong file handle problem,
884	a readonly file handle could be incorrectly used to attempt to write out
885	file updates through the page cache to multiply open files.  This could cause
886	the iozone benchmark to fail on the fwrite test. Fix bug mounting two different
887	shares to the same Windows server when using different usernames
888	(doing this to Samba servers worked but Windows was rejecting it) - now it is
889	possible to use different userids when connecting to the same server from a
890	Linux client. Fix oops when treeDisconnect called during unmount on
891	previously freed socket.
893	Version 0.60
894	------------
895	Fix oops in readpages caused by not setting address space operations in inode in 
896	rare code path. 
898	Version 0.59
899	------------
900	Includes support for deleting of open files and renaming over existing files (per POSIX
901	requirement).  Add readlink support for Windows junction points (directory symlinks).
903	Version 0.58
904	------------
905	Changed read and write to go through pagecache. Added additional address space operations.
906	Memory mapped operations now working.
908	Version 0.57
909	------------
910	Added writepage code for additional memory mapping support.  Fixed leak in xids causing
911	the simultaneous operations counter (/proc/fs/cifs/SimultaneousOps) to increase on 
912	every stat call.  Additional formatting cleanup. 
914	Version 0.56
915	------------
916	Fix bigendian bug in order of time conversion. Merge 2.5 to 2.4 version.  Formatting cleanup.   
918	Version 0.55
919	------------
920	Fixes from Zwane Mwaikambo for adding missing return code checking in a few places.
921	Also included a modified version of his fix to protect global list manipulation of
922	the smb session and tree connection and mid related global variables.
924	Version 0.54
925	------------
926	Fix problem with captive thread hanging around at unmount time.  Adjust to 2.5.42-pre
927	changes to superblock layout.   Remove wasteful allocation of smb buffers (now the send 
928	buffer is reused for responses).  Add more oplock handling. Additional minor cleanup.
930	Version 0.53
931	------------
932	More stylistic updates to better match kernel style.  Add additional statistics
933	for filesystem which can be viewed via /proc/fs/cifs.  Add more pieces of NTLMv2
934	and CIFS Packet Signing enablement.
936	Version 0.52
937	------------
938	Replace call to sleep_on with safer wait_on_event.
939	Make stylistic changes to better match kernel style recommendations.
940	Remove most typedef usage (except for the PDUs themselves).
942	Version 0.51
943	------------
944	Update mount so the -unc mount option is no longer required (the ip address can be specified
945	in a UNC style device name.   Implementation of readpage/writepage started.
947	Version 0.50
948	------------
949	Fix intermittent problem with incorrect smb header checking on badly 
950	fragmented tcp responses
952	Version 0.49
953	------------
954	Fixes to setting of allocation size and file size.
956	Version 0.48
957	------------
958	Various 2.5.38 fixes.  Now works on 2.5.38
960	Version 0.47
961	------------
962	Prepare for 2.5 kernel merge.  Remove ifdefs.
964	Version 0.46
965	------------
966	Socket buffer management fixes.  Fix dual free.
968	Version 0.45
969	------------
970	Various big endian fixes for hardlinks and symlinks and also for dfs.
972	Version 0.44
973	------------
974	Various big endian fixes for servers with Unix extensions such as Samba
976	Version 0.43
977	------------
978	Various FindNext fixes for incorrect filenames on large directory searches on big endian
979	clients.  basic posix file i/o tests now work on big endian machines, not just le
981	Version 0.42
982	------------
983	SessionSetup and NegotiateProtocol now work from Big Endian machines.
984	Various Big Endian fixes found during testing on the Linux on 390.  Various fixes for compatibility with older
985	versions of 2.4 kernel (now builds and works again on kernels at least as early as 2.4.7).
987	Version 0.41
988	------------
989	Various minor fixes for Connectathon Posix "basic" file i/o test suite.  Directory caching fixed so hardlinked
990	files now return the correct number of links on fstat as they are repeatedly linked and unlinked.
992	Version 0.40
993	------------
994	Implemented "Raw" (i.e. not encapsulated in SPNEGO) NTLMSSP (i.e. the Security Provider Interface used to negotiate
995	session advanced session authentication).  Raw NTLMSSP is preferred by Windows 2000 Professional and Windows XP.
996	Began implementing support for SPNEGO encapsulation of NTLMSSP based session authentication blobs
997	(which is the mechanism preferred by Windows 2000 server in the absence of Kerberos).
999	Version 0.38
1000	------------
1001	Introduced optional mount helper utility mount.cifs and made coreq changes to cifs vfs to enable
1002	it. Fixed a few bugs in the DFS code (e.g. bcc two bytes too short and incorrect uid in PDU).
1004	Version 0.37
1005	------------
1006	Rewrote much of connection and mount/unmount logic to handle bugs with
1007	multiple uses to same share, multiple users to same server etc.
1009	Version 0.36
1010	------------
1011	Fixed major problem with dentry corruption (missing call to dput)
1013	Version 0.35
1014	------------
1015	Rewrite of readdir code to fix bug. Various fixes for bigendian machines.
1016	Begin adding oplock support.  Multiusermount and oplockEnabled flags added to /proc/fs/cifs
1017	although corresponding function not fully implemented in the vfs yet
1019	Version 0.34
1020	------------
1021	Fixed dentry caching bug, misc. cleanup 
1023	Version 0.33
1024	------------
1025	Fixed 2.5 support to handle build and configure changes as well as misc. 2.5 changes.  Now can build
1026	on current 2.5 beta version (2.5.24) of the Linux kernel as well as on 2.4 Linux kernels.
1027	Support for STATUS codes (newer 32 bit NT error codes) added.  DFS support begun to be added.
1029	Version 0.32
1030	------------
1031	Unix extensions (symlink, readlink, hardlink, chmod and some chgrp and chown) implemented
1032	and tested against Samba 2.2.5
1035	Version 0.31
1036	------------
1037	1) Fixed lockrange to be correct (it was one byte too short)
1039	2) Fixed GETLK (i.e. the fcntl call to test a range of bytes in a file to see if locked) to correctly 
1040	show range as locked when there is a conflict with an existing lock.
1042	3) default file perms are now 2767 (indicating support for mandatory locks) instead of 777 for directories
1043	in most cases.  Eventually will offer optional ability to query server for the correct perms.
1045	3) Fixed eventual trap when mounting twice to different shares on the same server when the first succeeded 
1046	but the second one was invalid and failed (the second one was incorrectly disconnecting the tcp and smb
1047	session) 
1049	4) Fixed error logging of valid mount options
1051	5) Removed logging of password field.
1053	6) Moved negotiate, treeDisconnect and uloggoffX (only tConx and SessSetup remain in connect.c) to cifssmb.c
1054	and cleaned them up and made them more consistent with other cifs functions. 
1056	7) Server support for Unix extensions is now fully detected and FindFirst is implemented both ways 
1057	(with or without Unix extensions) but FindNext and QueryPathInfo with the Unix extensions are not completed,
1058	nor is the symlink support using the Unix extensions
1060	8) Started adding the readlink and follow_link code 
1062	Version 0.3 
1063	-----------
1064	Initial drop
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