On Mon, 26 Mar 2012 13:21:28 +0400 Pavel Shilovsky <piastry@xxxxxxxxxxx> wrote: > From: Steve French <sfrench@xxxxxxxxxx> > > SMB2 is the followon to the CIFS (and SMB) protocols > and the default for Windows since Windows Vista, and also > now implemented by various non-Windows servers. SMB2 > is more secure, has various performance advantages, including > larger i/o sizes, flow control, better caching model and more. > SMB2 also resolves some scalability limits in the CIFS > protocol and adds many new features while being much > simpler (only a few dozen commands instead of hundreds) > and since the protocol is clearer it is also more consistently > implemented across servers and thus easier to optimize. > > After much discussion with Jeff Layton, Jeremy Allison > and others at Connectathon, we decided to move the SMB2 > code from a distinct .ko and fstype into distinct > C files that optionally build in cifs.ko. As a result > the Kconfig gets simpler. > > To avoid destabilizing CIFS, the SMB2 code is going > to be moved into its own experimental CONFIG_CIFS_SMB2 ifdef > as it is merged and rereviewed. The changes to stable > CIFS (builds with the SMB2 ifdef off) are expected to be > fairly small. > > Signed-off-by: Steve French <sfrench@xxxxxxxxxx> > Signed-off-by: Pavel Shilovsky <piastry@xxxxxxxxxxx> > --- > fs/cifs/Kconfig | 20 ++++++++++++++++++++ > 1 files changed, 20 insertions(+), 0 deletions(-) > > diff --git a/fs/cifs/Kconfig b/fs/cifs/Kconfig > index 2b243af..a08306a 100644 > --- a/fs/cifs/Kconfig > +++ b/fs/cifs/Kconfig > @@ -158,3 +158,23 @@ config CIFS_NFSD_EXPORT > depends on CIFS && EXPERIMENTAL && BROKEN > help > Allows NFS server to export a CIFS mounted share (nfsd over cifs) > + > +config CIFS_SMB2 > + bool "SMB2 network file system support (EXPERIMENTAL)" > + depends on EXPERIMENTAL && INET && BROKEN > + select NLS > + select KEYS > + select FSCACHE > + select DNS_RESOLVER > + > + help > + This enables experimental support for the SMB2 (Server Message Block > + version 2) protocol. The SMB2 protocol is the successor to the > + popular CIFS and SMB network file sharing protocols. SMB2 is the > + native file sharing mechanism for recent versions of Windows > + operating systems (since Vista). SMB2 enablement will eventually > + allow users better performance, security and features, than would be > + possible with cifs. Note that smb2 mount options also are simpler > + (compared to cifs) due to protocol improvements. > + > + Unless you are a developer or tester, say N. Looks reasonable... Reviewed-by: Jeff Layton <jlayton@xxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-cifs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
