NFS: Remove use of the Big Kernel Lock around calls to rpc_execute.

Remove use of the Big Kernel Lock around calls to rpc_execute.
Signed-off-by: NFrank Filz <ffilz@us.ibm.com>
Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>

fs/nfs/direct.c

@@ -307,9 +307,7 @@ static ssize_t nfs_direct_read_schedule(struct nfs_direct_req *dreq, unsigned lo
 
 		data->task.tk_cookie = (unsigned long) inode;
 
-		lock_kernel();
 		rpc_execute(&data->task);
-		unlock_kernel();
 
 		dfprintk(VFS, "NFS: %5u initiated direct read call (req %s/%Ld, %zu bytes @ offset %Lu)\n",
 				data->task.tk_pid,
@@ -475,9 +473,7 @@ static void nfs_direct_commit_schedule(struct nfs_direct_req *dreq)
 
 	dprintk("NFS: %5u initiated commit call\n", data->task.tk_pid);
 
-	lock_kernel();
 	rpc_execute(&data->task);
-	unlock_kernel();
 }
 
 static void nfs_direct_write_complete(struct nfs_direct_req *dreq, struct inode *inode)
@@ -641,9 +637,7 @@ static ssize_t nfs_direct_write_schedule(struct nfs_direct_req *dreq, unsigned l
 		data->task.tk_priority = RPC_PRIORITY_NORMAL;
 		data->task.tk_cookie = (unsigned long) inode;
 
-		lock_kernel();
 		rpc_execute(&data->task);
-		unlock_kernel();
 
 		dfprintk(VFS, "NFS: %5u initiated direct write call (req %s/%Ld, %zu bytes @ offset %Lu)\n",
 				data->task.tk_pid,

fs/nfs/read.c

@@ -323,9 +323,7 @@ static void nfs_execute_read(struct nfs_read_data *data)
 	sigset_t oldset;
 
 	rpc_clnt_sigmask(clnt, &oldset);
-	lock_kernel();
 	rpc_execute(&data->task);
-	unlock_kernel();
 	rpc_clnt_sigunmask(clnt, &oldset);
 }
 

fs/nfs/write.c

@@ -991,9 +991,7 @@ static void nfs_execute_write(struct nfs_write_data *data)
 	sigset_t oldset;
 
 	rpc_clnt_sigmask(clnt, &oldset);
-	lock_kernel();
 	rpc_execute(&data->task);
-	unlock_kernel();
 	rpc_clnt_sigunmask(clnt, &oldset);
 }