Merge tag 'nfs-for-3.6-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull second wave of NFS client updates from Trond Myklebust:

 - Patches from Bryan to allow splitting of the NFSv2/v3/v4 code into
   separate modules.

 - Fix Oopses in the NFSv4 idmapper

 - Fix a deadlock whereby rpciod tries to allocate a new socket and ends
   up recursing into the NFS code due to memory reclaim.

 - Increase the number of permitted callback connections.

* tag 'nfs-for-3.6-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  nfs: explicitly reject LOCK_MAND flock() requests
  nfs: increase number of permitted callback connections.
  SUNRPC: return negative value in case rpcbind client creation error
  NFS: Convert v4 into a module
  NFS: Convert v3 into a module
  NFS: Convert v2 into a module
  NFS: Keep module parameters in the generic NFS client
  NFS: Split out remaining NFS v4 inode functions
  NFS: Pass super operations and xattr handlers in the nfs_subversion
  NFS: Only initialize the ACL client in the v3 case
  NFS: Create a try_mount rpc op
  NFS: Remove the NFS v4 xdev mount function
  NFS: Add version registering framework
  NFS: Fix a number of bugs in the idmapper
  nfs: skip commit in releasepage if we're freeing memory for fs-related reasons
  sunrpc: clarify comments on rpc_make_runnable
  pnfsblock: bail out partial page IO

1 files changed, 10 insertions, 0 deletions

diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index 62d0dac8f780..926679459e71 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -1892,6 +1892,8 @@ static void xs_local_setup_socket(struct work_struct *work)
         if (xprt->shutdown)
                 goto out;
 
+        current->flags |= PF_FSTRANS;
+
         clear_bit(XPRT_CONNECTION_ABORT, &xprt->state);
         status = __sock_create(xprt->xprt_net, AF_LOCAL,
                                         SOCK_STREAM, 0, &sock, 1);
@@ -1925,6 +1927,7 @@ static void xs_local_setup_socket(struct work_struct *work)
 out:
         xprt_clear_connecting(xprt);
         xprt_wake_pending_tasks(xprt, status);
+        current->flags &= ~PF_FSTRANS;
 }
 
 static void xs_udp_finish_connecting(struct rpc_xprt *xprt, struct socket *sock)
@@ -1967,6 +1970,8 @@ static void xs_udp_setup_socket(struct work_struct *work)
         if (xprt->shutdown)
                 goto out;
 
+        current->flags |= PF_FSTRANS;
+
         /* Start by resetting any existing state */
         xs_reset_transport(transport);
         sock = xs_create_sock(xprt, transport,
@@ -1985,6 +1990,7 @@ static void xs_udp_setup_socket(struct work_struct *work)
 out:
         xprt_clear_connecting(xprt);
         xprt_wake_pending_tasks(xprt, status);
+        current->flags &= ~PF_FSTRANS;
 }
 
 /*
@@ -2110,6 +2116,8 @@ static void xs_tcp_setup_socket(struct work_struct *work)
         if (xprt->shutdown)
                 goto out;
 
+        current->flags |= PF_FSTRANS;
+
         if (!sock) {
                 clear_bit(XPRT_CONNECTION_ABORT, &xprt->state);
                 sock = xs_create_sock(xprt, transport,
@@ -2159,6 +2167,7 @@ static void xs_tcp_setup_socket(struct work_struct *work)
         case -EINPROGRESS:
         case -EALREADY:
                 xprt_clear_connecting(xprt);
+                current->flags &= ~PF_FSTRANS;
                 return;
         case -EINVAL:
                 /* Happens, for instance, if the user specified a link
@@ -2171,6 +2180,7 @@ out_eagain:
 out:
         xprt_clear_connecting(xprt);
         xprt_wake_pending_tasks(xprt, status);
+        current->flags &= ~PF_FSTRANS;
 }
 
 /**