Merge branch 'master' into next

Conflicts:
	fs/cifs/misc.c

Merge to resolve above, per the patch below.

Signed-off-by: James Morris <jmorris@namei.org>

diff --cc fs/cifs/misc.c
index ec36410,addd1dc..0000000
--- a/fs/cifs/misc.c
+++ b/fs/cifs/misc.c
@@@ -347,13 -338,13 +338,13 @@@ header_assemble(struct smb_hdr *buffer
  		/*  BB Add support for establishing new tCon and SMB Session  */
  		/*      with userid/password pairs found on the smb session   */
  		/*	for other target tcp/ip addresses 		BB    */
 -				if (current->fsuid != treeCon->ses->linux_uid) {
 +				if (current_fsuid() != treeCon->ses->linux_uid) {
  					cFYI(1, ("Multiuser mode and UID "
  						 "did not match tcon uid"));
- 					read_lock(&GlobalSMBSeslock);
- 					list_for_each(temp_item, &GlobalSMBSessionList) {
- 						ses = list_entry(temp_item, struct cifsSesInfo, cifsSessionList);
+ 					read_lock(&cifs_tcp_ses_lock);
+ 					list_for_each(temp_item, &treeCon->ses->server->smb_ses_list) {
+ 						ses = list_entry(temp_item, struct cifsSesInfo, smb_ses_list);
 -						if (ses->linux_uid == current->fsuid) {
 +						if (ses->linux_uid == current_fsuid()) {
  							if (ses->server == treeCon->ses->server) {
  								cFYI(1, ("found matching uid substitute right smb_uid"));
  								buffer->Uid = ses->Suid;

1 files changed, 47 insertions, 0 deletions

diff --git a/Documentation/blockdev/nbd.txt b/Documentation/blockdev/nbd.txt
new file mode 100644
index 00000000000..aeb93ffe641
--- /dev/null
+++ b/Documentation/blockdev/nbd.txt
@@ -0,0 +1,47 @@
+                      Network Block Device (TCP version)
+                                       
+   What is it: With this compiled in the kernel (or as a module), Linux
+   can use a remote server as one of its block devices. So every time
+   the client computer wants to read, e.g., /dev/nb0, it sends a
+   request over TCP to the server, which will reply with the data read.
+   This can be used for stations with low disk space (or even diskless -
+   if you boot from floppy) to borrow disk space from another computer.
+   Unlike NFS, it is possible to put any filesystem on it, etc. It should
+   even be possible to use NBD as a root filesystem (I've never tried),
+   but it requires a user-level program to be in the initrd to start.
+   It also allows you to run block-device in user land (making server
+   and client physically the same computer, communicating using loopback).
+   
+   Current state: It currently works. Network block device is stable.
+   I originally thought that it was impossible to swap over TCP. It
+   turned out not to be true - swapping over TCP now works and seems
+   to be deadlock-free, but it requires heavy patches into Linux's
+   network layer.
+   
+   For more information, or to download the nbd-client and nbd-server
+   tools, go to http://nbd.sf.net/.
+
+   Howto: To setup nbd, you can simply do the following:
+
+   First, serve a device or file from a remote server:
+
+   nbd-server <port-number> <device-or-file-to-serve-to-client>
+
+   e.g.,
+	root@server1 # nbd-server 1234 /dev/sdb1
+
+	(serves sdb1 partition on TCP port 1234)
+
+   Then, on the local (client) system:
+
+   nbd-client <server-name-or-IP> <server-port-number> /dev/nb[0-n]
+
+   e.g.,
+	root@client1 # nbd-client server1 1234 /dev/nb0
+
+	(creates the nb0 device on client1)
+
+   The nbd kernel module need only be installed on the client
+   system, as the nbd-server is completely in userspace. In fact,
+   the nbd-server has been successfully ported to other operating
+   systems, including Windows.