get_empty_filp()/alloc_file() leave both ->f_pos and ->f_version zero

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/anon_inodes.c

@@ -164,9 +164,7 @@ struct file *anon_inode_getfile(const char *name,
 		goto err_dput;
 	file->f_mapping = anon_inode_inode->i_mapping;
 
-	file->f_pos = 0;
 	file->f_flags = flags & (O_ACCMODE | O_NONBLOCK);
-	file->f_version = 0;
 	file->private_data = priv;
 
 	return file;

fs/open.c

@@ -699,7 +699,6 @@ static int do_dentry_open(struct file *f,
 	}
 
 	f->f_mapping = inode->i_mapping;
-	f->f_pos = 0;
 	file_sb_list_add(f, inode->i_sb);
 
 	if (unlikely(f->f_mode & FMODE_PATH)) {

net/socket.c

@@ -379,7 +379,6 @@ struct file *sock_alloc_file(struct socket *sock, int flags, const char *dname)
 
 	sock->file = file;
 	file->f_flags = O_RDWR | (flags & O_NONBLOCK);
-	file->f_pos = 0;
 	file->private_data = sock;
 	return file;
 }