Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Copy head to stable/9 as part of 9.0-RELEASE release cycle.

Approved by: re (implicit)

This update changes the mnt_flag field in the mount structure from
32 bits to 64 bits and eliminates the unused mnt_xflag field. The
existing mnt_flag field is completely out of bits, so this update
gives us room to expand. Note that the f_flags field in the statfs
structure is already 64 bits, so the expanded mnt_flag field can
be exported without having to make any changes in the statfs structure.

Approved by: re (bz)

Switch to our preferred 2-clause BSD license.

Approved by: bp

Replace lockmgr lock protecting smbfs node hash table with sx lock.

MFC after: 1 month

Eliminate unused and constant arguments to smbfs_vinvalbuf()

/* -> /*- for copyright notices, minor format tweaks as necessary

Convert to nmount. Add omount compat.

Unpropagate the sm_args function into the runtime part.

Explicitly pass vnode to smbfs_doio() function.

Revert removal of vnode and VFS stubs; bp asserts that they are needed.

Garbage-collect stub vnode ops, use the defaults instead.

Keep trying to flush the vnode list for the mount while some are still
busy and we are making progress towards making them not busy. This is
needed because smbfs vnodes reference their parent directory but may
appear after their parent in the mount's vnode list; one pass over the
list is not sufficient in this case.

This stops attempts to unmount idle smbfs mounts failing with EBUSY.

Implement additional SMB calls to allow proper update of file size as some
file servers fail to do it in the right way.

New NFLUSHWIRE flag marks pending flush request(s).

NB: not all cases covered by this commit.

Obtained from: Darwin

More s/file system/filesystem/g

Catch up with KSE changes.

Submitted by: Max Khon <fjoe@iclub.nsu.ru>

Move VT_SMBFS definition to the proper place. Undefine VI_LOCK/VI_UNLOCK.

Import kernel part of SMB/CIFS requester.
Add smbfs(CIFS) filesystem.

Userland part will be in the ports tree for a while.

Obtained from: smbfs-1.3.7-dev package.