New helper - current_umask()

current->fs->umask is what most of fs_struct users are doing.
Put that into a helper function.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/nfs/nfs3proc.c b/fs/nfs/nfs3proc.c
index c55be7a..e47d440 100644
--- a/fs/nfs/nfs3proc.c
+++ b/fs/nfs/nfs3proc.c
@@ -328,7 +328,7 @@
 		data->arg.create.verifier[1] = current->pid;
 	}
 
-	sattr->ia_mode &= ~current->fs->umask;
+	sattr->ia_mode &= ~current_umask();
 
 	for (;;) {
 		status = nfs3_do_create(dir, dentry, data);
@@ -528,7 +528,7 @@
 
 	dprintk("NFS call  mkdir %s\n", dentry->d_name.name);
 
-	sattr->ia_mode &= ~current->fs->umask;
+	sattr->ia_mode &= ~current_umask();
 
 	data = nfs3_alloc_createdata();
 	if (data == NULL)
@@ -639,7 +639,7 @@
 	dprintk("NFS call  mknod %s %u:%u\n", dentry->d_name.name,
 			MAJOR(rdev), MINOR(rdev));
 
-	sattr->ia_mode &= ~current->fs->umask;
+	sattr->ia_mode &= ~current_umask();
 
 	data = nfs3_alloc_createdata();
 	if (data == NULL)