get rid of alloc_pipe_info() argument

not used anymore
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/pipe.c

@@ -775,7 +775,7 @@ pipe_fasync(int fd, struct file *filp, int on)
 	return retval;
 }
 
-struct pipe_inode_info * alloc_pipe_info(struct inode *inode)
+struct pipe_inode_info *alloc_pipe_info(void)
 {
 	struct pipe_inode_info *pipe;
 
@@ -841,7 +841,7 @@ static struct inode * get_pipe_inode(void)
 
 	inode->i_ino = get_next_ino();
 
-	pipe = alloc_pipe_info(inode);
+	pipe = alloc_pipe_info();
 	if (!pipe)
 		goto fail_iput;
 
@@ -1031,7 +1031,7 @@ static int fifo_open(struct inode *inode, struct file *filp)
 		spin_unlock(&inode->i_lock);
 	} else {
 		spin_unlock(&inode->i_lock);
-		pipe = alloc_pipe_info(inode);
+		pipe = alloc_pipe_info();
 		if (!pipe)
 			return -ENOMEM;
 		pipe->files = 1;

fs/splice.c

@@ -1183,7 +1183,7 @@ ssize_t splice_direct_to_actor(struct file *in, struct splice_desc *sd,
 	 */
 	pipe = current->splice_pipe;
 	if (unlikely(!pipe)) {
-		pipe = alloc_pipe_info(NULL);
+		pipe = alloc_pipe_info();
 		if (!pipe)
 			return -ENOMEM;
 

include/linux/pipe_fs_i.h

@@ -146,7 +146,7 @@ int pipe_proc_fn(struct ctl_table *, int, void __user *, size_t *, loff_t *);
 /* Drop the inode semaphore and wait for a pipe event, atomically */
 void pipe_wait(struct pipe_inode_info *pipe);
 
-struct pipe_inode_info * alloc_pipe_info(struct inode * inode);
+struct pipe_inode_info *alloc_pipe_info(void);
 void free_pipe_info(struct inode * inode);
 void __free_pipe_info(struct pipe_inode_info *);