cifs: update Kconfig description

There were various outdated or missing things in fs/cifs/Kconfig
e.g. mention of support for insecure NTLM which has been removed,
and lack of mention of some important features. This also shortens
it slightly, and fixes some confusing text (e.g. the SMB1 POSIX
extensions option).
Reviewed-by: Namjae Jeon <linkinjeon@kernel.org>
Acked-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Acked-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

fs/cifs/Kconfig

@@ -19,39 +19,36 @@ config CIFS
 	select ASN1
 	select OID_REGISTRY
 	help
-	  This is the client VFS module for the SMB3 family of NAS protocols,
-	  (including support for the most recent, most secure dialect SMB3.1.1)
-	  as well as for earlier dialects such as SMB2.1, SMB2 and the older
-	  Common Internet File System (CIFS) protocol.  CIFS was the successor
-	  to the original dialect, the Server Message Block (SMB) protocol, the
-	  native file sharing mechanism for most early PC operating systems.
-
-	  The SMB3 protocol is supported by most modern operating systems
-	  and NAS appliances (e.g. Samba, Windows 10, Windows Server 2016,
-	  MacOS) and even in the cloud (e.g. Microsoft Azure).
-	  The older CIFS protocol was included in Windows NT4, 2000 and XP (and
-	  later) as well by Samba (which provides excellent CIFS and SMB3
-	  server support for Linux and many other operating systems). Use of
-	  dialects older than SMB2.1 is often discouraged on public networks.
+	  This is the client VFS module for the SMB3 family of network file
+	  protocols (including the most recent, most secure dialect SMB3.1.1).
+	  This module also includes support for earlier dialects such as
+	  SMB2.1, SMB2 and even the old Common Internet File System (CIFS)
+	  protocol.  CIFS was the successor to the original network filesystem
+	  protocol, Server Message Block (SMB ie SMB1), the native file sharing
+	  mechanism for most early PC operating systems.
+
+	  The SMB3.1.1 protocol is supported by most modern operating systems
+	  and NAS appliances (e.g. Samba, Windows 11, Windows Server 2022,
+	  MacOS) and even in the cloud (e.g. Microsoft Azure) and also by the
+	  Linux kernel server, ksmbd.  Support for the older CIFS protocol was
+	  included in Windows NT4, 2000 and XP (and later). Use of dialects
+	  older than SMB2.1 is often discouraged on public networks.
 	  This module also provides limited support for OS/2 and Windows ME
 	  and similar very old servers.
 
-	  This module provides an advanced network file system client
-	  for mounting to SMB3 (and CIFS) compliant servers.  It includes
-	  support for DFS (hierarchical name space), secure per-user
-	  session establishment via Kerberos or NTLM or NTLMv2, RDMA
-	  (smbdirect), advanced security features, per-share encryption,
-	  directory leases, safe distributed caching (oplock), optional packet
-	  signing, Unicode and other internationalization improvements.
+	  This module provides an advanced network file system client for
+	  mounting to SMB3 (and CIFS) compliant servers.  It includes support
+	  for DFS (hierarchical name space), secure per-user session
+	  establishment via Kerberos or NTLMv2, RDMA (smbdirect), advanced
+	  security features, per-share encryption, packet-signing, snapshots,
+	  directory leases, safe distributed caching (leases), multichannel,
+	  Unicode and other internationalization improvements.
 
 	  In general, the default dialects, SMB3 and later, enable better
 	  performance, security and features, than would be possible with CIFS.
-	  Note that when mounting to Samba, due to the CIFS POSIX extensions,
-	  CIFS mounts can provide slightly better POSIX compatibility
-	  than SMB3 mounts. SMB2/SMB3 mount options are also
-	  slightly simpler (compared to CIFS) due to protocol improvements.
 
-	  If you need to mount to Samba, Azure, Macs or Windows from this machine, say Y.
+	  If you need to mount to Samba, Azure, ksmbd, Macs or Windows from this
+	  machine, say Y.
 
 config CIFS_STATS2
 	bool "Extended statistics"
@@ -111,12 +108,12 @@ config CIFS_POSIX
 	depends on CIFS && CIFS_ALLOW_INSECURE_LEGACY && CIFS_XATTR
 	help
 	  Enabling this option will cause the cifs client to attempt to
-	  negotiate a newer dialect with servers, such as Samba 3.0.5
-	  or later, that optionally can handle more POSIX like (rather
-	  than Windows like) file behavior.  It also enables
-	  support for POSIX ACLs (getfacl and setfacl) to servers
-	  (such as Samba 3.10 and later) which can negotiate
-	  CIFS POSIX ACL support.  If unsure, say N.
+	  negotiate a feature of the older cifs dialect with servers, such as
+	  Samba 3.0.5 or later, that optionally can handle more POSIX like
+	  (rather than Windows like) file behavior.  It also enables support
+	  for POSIX ACLs (getfacl and setfacl) to servers (such as Samba 3.10
+	  and later) which can negotiate CIFS POSIX ACL support.  This config
+	  option is not needed when mounting with SMB3.1.1. If unsure, say N.
 
 config CIFS_DEBUG
 	bool "Enable CIFS debugging routines"