[PATCH] get rid of the PIPE_*() macros

get rid of the PIPE_*() macros. Scripted transformation.
Signed-off-by: NIngo Molnar <mingo@elte.hu>
Signed-off-by: NJens Axboe <axboe@suse.de>

fs/fifo.c

@@ -28,14 +28,14 @@ static void wait_for_partner(struct inode* inode, unsigned int *cnt)
 
 static void wake_up_partner(struct inode* inode)
 {
-	wake_up_interruptible(PIPE_WAIT(*inode));
+	wake_up_interruptible(&inode->i_pipe->wait);
 }
 
 static int fifo_open(struct inode *inode, struct file *filp)
 {
 	int ret;
 
-	mutex_lock(PIPE_MUTEX(*inode));
+	mutex_lock(&inode->i_mutex);
 	if (!inode->i_pipe) {
 		ret = -ENOMEM;
 		inode->i_pipe = alloc_pipe_info(inode);
@@ -55,18 +55,18 @@ static int fifo_open(struct inode *inode, struct file *filp)
 	 *  opened, even when there is no process writing the FIFO.
 	 */
 		filp->f_op = &read_fifo_fops;
-		PIPE_RCOUNTER(*inode)++;
-		if (PIPE_READERS(*inode)++ == 0)
+		inode->i_pipe->r_counter++;
+		if (inode->i_pipe->readers++ == 0)
 			wake_up_partner(inode);
 
-		if (!PIPE_WRITERS(*inode)) {
+		if (!inode->i_pipe->writers) {
 			if ((filp->f_flags & O_NONBLOCK)) {
 				/* suppress POLLHUP until we have
 				 * seen a writer */
-				filp->f_version = PIPE_WCOUNTER(*inode);
+				filp->f_version = inode->i_pipe->w_counter;
 			} else 
 			{
-				wait_for_partner(inode, &PIPE_WCOUNTER(*inode));
+				wait_for_partner(inode, &inode->i_pipe->w_counter);
 				if(signal_pending(current))
 					goto err_rd;
 			}
@@ -80,16 +80,16 @@ static int fifo_open(struct inode *inode, struct file *filp)
 	 *  errno=ENXIO when there is no process reading the FIFO.
 	 */
 		ret = -ENXIO;
-		if ((filp->f_flags & O_NONBLOCK) && !PIPE_READERS(*inode))
+		if ((filp->f_flags & O_NONBLOCK) && !inode->i_pipe->readers)
 			goto err;
 
 		filp->f_op = &write_fifo_fops;
-		PIPE_WCOUNTER(*inode)++;
-		if (!PIPE_WRITERS(*inode)++)
+		inode->i_pipe->w_counter++;
+		if (!inode->i_pipe->writers++)
 			wake_up_partner(inode);
 
-		if (!PIPE_READERS(*inode)) {
-			wait_for_partner(inode, &PIPE_RCOUNTER(*inode));
+		if (!inode->i_pipe->readers) {
+			wait_for_partner(inode, &inode->i_pipe->r_counter);
 			if (signal_pending(current))
 				goto err_wr;
 		}
@@ -104,11 +104,11 @@ static int fifo_open(struct inode *inode, struct file *filp)
 	 */
 		filp->f_op = &rdwr_fifo_fops;
 
-		PIPE_READERS(*inode)++;
-		PIPE_WRITERS(*inode)++;
-		PIPE_RCOUNTER(*inode)++;
-		PIPE_WCOUNTER(*inode)++;
-		if (PIPE_READERS(*inode) == 1 || PIPE_WRITERS(*inode) == 1)
+		inode->i_pipe->readers++;
+		inode->i_pipe->writers++;
+		inode->i_pipe->r_counter++;
+		inode->i_pipe->w_counter++;
+		if (inode->i_pipe->readers == 1 || inode->i_pipe->writers == 1)
 			wake_up_partner(inode);
 		break;
 
@@ -118,27 +118,27 @@ static int fifo_open(struct inode *inode, struct file *filp)
 	}
 
 	/* Ok! */
-	mutex_unlock(PIPE_MUTEX(*inode));
+	mutex_unlock(&inode->i_mutex);
 	return 0;
 
 err_rd:
-	if (!--PIPE_READERS(*inode))
-		wake_up_interruptible(PIPE_WAIT(*inode));
+	if (!--inode->i_pipe->readers)
+		wake_up_interruptible(&inode->i_pipe->wait);
 	ret = -ERESTARTSYS;
 	goto err;
 
 err_wr:
-	if (!--PIPE_WRITERS(*inode))
-		wake_up_interruptible(PIPE_WAIT(*inode));
+	if (!--inode->i_pipe->writers)
+		wake_up_interruptible(&inode->i_pipe->wait);
 	ret = -ERESTARTSYS;
 	goto err;
 
 err:
-	if (!PIPE_READERS(*inode) && !PIPE_WRITERS(*inode))
+	if (!inode->i_pipe->readers && !inode->i_pipe->writers)
 		free_pipe_info(inode);
 
 err_nocleanup:
-	mutex_unlock(PIPE_MUTEX(*inode));
+	mutex_unlock(&inode->i_mutex);
 	return ret;
 }
 

fs/pipe.c

@@ -158,7 +158,7 @@ pipe_readv(struct file *filp, const struct iovec *_iov,
 
 	do_wakeup = 0;
 	ret = 0;
-	mutex_lock(PIPE_MUTEX(*inode));
+	mutex_lock(&inode->i_mutex);
 	info = inode->i_pipe;
 	for (;;) {
 		int bufs = info->nrbufs;
@@ -202,9 +202,9 @@ pipe_readv(struct file *filp, const struct iovec *_iov,
 		}
 		if (bufs)	/* More to do? */
 			continue;
-		if (!PIPE_WRITERS(*inode))
+		if (!inode->i_pipe->writers)
 			break;
-		if (!PIPE_WAITING_WRITERS(*inode)) {
+		if (!inode->i_pipe->waiting_writers) {
 			/* syscall merging: Usually we must not sleep
 			 * if O_NONBLOCK is set, or if we got some data.
 			 * But if a writer sleeps in kernel space, then
@@ -222,16 +222,16 @@ pipe_readv(struct file *filp, const struct iovec *_iov,
 			break;
 		}
 		if (do_wakeup) {
-			wake_up_interruptible_sync(PIPE_WAIT(*inode));
- 			kill_fasync(PIPE_FASYNC_WRITERS(*inode), SIGIO, POLL_OUT);
+			wake_up_interruptible_sync(&inode->i_pipe->wait);
+ 			kill_fasync(&inode->i_pipe->fasync_writers, SIGIO, POLL_OUT);
 		}
 		pipe_wait(inode->i_pipe);
 	}
-	mutex_unlock(PIPE_MUTEX(*inode));
+	mutex_unlock(&inode->i_mutex);
 	/* Signal writers asynchronously that there is more room.  */
 	if (do_wakeup) {
-		wake_up_interruptible(PIPE_WAIT(*inode));
-		kill_fasync(PIPE_FASYNC_WRITERS(*inode), SIGIO, POLL_OUT);
+		wake_up_interruptible(&inode->i_pipe->wait);
+		kill_fasync(&inode->i_pipe->fasync_writers, SIGIO, POLL_OUT);
 	}
 	if (ret > 0)
 		file_accessed(filp);
@@ -264,10 +264,10 @@ pipe_writev(struct file *filp, const struct iovec *_iov,
 
 	do_wakeup = 0;
 	ret = 0;
-	mutex_lock(PIPE_MUTEX(*inode));
+	mutex_lock(&inode->i_mutex);
 	info = inode->i_pipe;
 
-	if (!PIPE_READERS(*inode)) {
+	if (!inode->i_pipe->readers) {
 		send_sig(SIGPIPE, current, 0);
 		ret = -EPIPE;
 		goto out;
@@ -306,7 +306,7 @@ pipe_writev(struct file *filp, const struct iovec *_iov,
 
 	for (;;) {
 		int bufs;
-		if (!PIPE_READERS(*inode)) {
+		if (!inode->i_pipe->readers) {
 			send_sig(SIGPIPE, current, 0);
 			if (!ret) ret = -EPIPE;
 			break;
@@ -367,19 +367,19 @@ pipe_writev(struct file *filp, const struct iovec *_iov,
 			break;
 		}
 		if (do_wakeup) {
-			wake_up_interruptible_sync(PIPE_WAIT(*inode));
-			kill_fasync(PIPE_FASYNC_READERS(*inode), SIGIO, POLL_IN);
+			wake_up_interruptible_sync(&inode->i_pipe->wait);
+			kill_fasync(&inode->i_pipe->fasync_readers, SIGIO, POLL_IN);
 			do_wakeup = 0;
 		}
-		PIPE_WAITING_WRITERS(*inode)++;
+		inode->i_pipe->waiting_writers++;
 		pipe_wait(inode->i_pipe);
-		PIPE_WAITING_WRITERS(*inode)--;
+		inode->i_pipe->waiting_writers--;
 	}
 out:
-	mutex_unlock(PIPE_MUTEX(*inode));
+	mutex_unlock(&inode->i_mutex);
 	if (do_wakeup) {
-		wake_up_interruptible(PIPE_WAIT(*inode));
-		kill_fasync(PIPE_FASYNC_READERS(*inode), SIGIO, POLL_IN);
+		wake_up_interruptible(&inode->i_pipe->wait);
+		kill_fasync(&inode->i_pipe->fasync_readers, SIGIO, POLL_IN);
 	}
 	if (ret > 0)
 		file_update_time(filp);
@@ -416,7 +416,7 @@ pipe_ioctl(struct inode *pino, struct file *filp,
 
 	switch (cmd) {
 		case FIONREAD:
-			mutex_lock(PIPE_MUTEX(*inode));
+			mutex_lock(&inode->i_mutex);
 			info =  inode->i_pipe;
 			count = 0;
 			buf = info->curbuf;
@@ -425,7 +425,7 @@ pipe_ioctl(struct inode *pino, struct file *filp,
 				count += info->bufs[buf].len;
 				buf = (buf+1) & (PIPE_BUFFERS-1);
 			}
-			mutex_unlock(PIPE_MUTEX(*inode));
+			mutex_unlock(&inode->i_mutex);
 			return put_user(count, (int __user *)arg);
 		default:
 			return -EINVAL;
@@ -441,14 +441,14 @@ pipe_poll(struct file *filp, poll_table *wait)
 	struct pipe_inode_info *info = inode->i_pipe;
 	int nrbufs;
 
-	poll_wait(filp, PIPE_WAIT(*inode), wait);
+	poll_wait(filp, &inode->i_pipe->wait, wait);
 
 	/* Reading only -- no need for acquiring the semaphore.  */
 	nrbufs = info->nrbufs;
 	mask = 0;
 	if (filp->f_mode & FMODE_READ) {
 		mask = (nrbufs > 0) ? POLLIN | POLLRDNORM : 0;
-		if (!PIPE_WRITERS(*inode) && filp->f_version != PIPE_WCOUNTER(*inode))
+		if (!inode->i_pipe->writers && filp->f_version != inode->i_pipe->w_counter)
 			mask |= POLLHUP;
 	}
 
@@ -458,7 +458,7 @@ pipe_poll(struct file *filp, poll_table *wait)
 		 * Most Unices do not set POLLERR for FIFOs but on Linux they
 		 * behave exactly like pipes for poll().
 		 */
-		if (!PIPE_READERS(*inode))
+		if (!inode->i_pipe->readers)
 			mask |= POLLERR;
 	}
 
@@ -468,17 +468,17 @@ pipe_poll(struct file *filp, poll_table *wait)
 static int
 pipe_release(struct inode *inode, int decr, int decw)
 {
-	mutex_lock(PIPE_MUTEX(*inode));
-	PIPE_READERS(*inode) -= decr;
-	PIPE_WRITERS(*inode) -= decw;
-	if (!PIPE_READERS(*inode) && !PIPE_WRITERS(*inode)) {
+	mutex_lock(&inode->i_mutex);
+	inode->i_pipe->readers -= decr;
+	inode->i_pipe->writers -= decw;
+	if (!inode->i_pipe->readers && !inode->i_pipe->writers) {
 		free_pipe_info(inode);
 	} else {
-		wake_up_interruptible(PIPE_WAIT(*inode));
-		kill_fasync(PIPE_FASYNC_READERS(*inode), SIGIO, POLL_IN);
-		kill_fasync(PIPE_FASYNC_WRITERS(*inode), SIGIO, POLL_OUT);
+		wake_up_interruptible(&inode->i_pipe->wait);
+		kill_fasync(&inode->i_pipe->fasync_readers, SIGIO, POLL_IN);
+		kill_fasync(&inode->i_pipe->fasync_writers, SIGIO, POLL_OUT);
 	}
-	mutex_unlock(PIPE_MUTEX(*inode));
+	mutex_unlock(&inode->i_mutex);
 
 	return 0;
 }
@@ -489,9 +489,9 @@ pipe_read_fasync(int fd, struct file *filp, int on)
 	struct inode *inode = filp->f_dentry->d_inode;
 	int retval;
 
-	mutex_lock(PIPE_MUTEX(*inode));
-	retval = fasync_helper(fd, filp, on, PIPE_FASYNC_READERS(*inode));
-	mutex_unlock(PIPE_MUTEX(*inode));
+	mutex_lock(&inode->i_mutex);
+	retval = fasync_helper(fd, filp, on, &inode->i_pipe->fasync_readers);
+	mutex_unlock(&inode->i_mutex);
 
 	if (retval < 0)
 		return retval;
@@ -506,9 +506,9 @@ pipe_write_fasync(int fd, struct file *filp, int on)
 	struct inode *inode = filp->f_dentry->d_inode;
 	int retval;
 
-	mutex_lock(PIPE_MUTEX(*inode));
-	retval = fasync_helper(fd, filp, on, PIPE_FASYNC_WRITERS(*inode));
-	mutex_unlock(PIPE_MUTEX(*inode));
+	mutex_lock(&inode->i_mutex);
+	retval = fasync_helper(fd, filp, on, &inode->i_pipe->fasync_writers);
+	mutex_unlock(&inode->i_mutex);
 
 	if (retval < 0)
 		return retval;
@@ -523,14 +523,14 @@ pipe_rdwr_fasync(int fd, struct file *filp, int on)
 	struct inode *inode = filp->f_dentry->d_inode;
 	int retval;
 
-	mutex_lock(PIPE_MUTEX(*inode));
+	mutex_lock(&inode->i_mutex);
 
-	retval = fasync_helper(fd, filp, on, PIPE_FASYNC_READERS(*inode));
+	retval = fasync_helper(fd, filp, on, &inode->i_pipe->fasync_readers);
 
 	if (retval >= 0)
-		retval = fasync_helper(fd, filp, on, PIPE_FASYNC_WRITERS(*inode));
+		retval = fasync_helper(fd, filp, on, &inode->i_pipe->fasync_writers);
 
-	mutex_unlock(PIPE_MUTEX(*inode));
+	mutex_unlock(&inode->i_mutex);
 
 	if (retval < 0)
 		return retval;
@@ -569,9 +569,9 @@ pipe_read_open(struct inode *inode, struct file *filp)
 {
 	/* We could have perhaps used atomic_t, but this and friends
 	   below are the only places.  So it doesn't seem worthwhile.  */
-	mutex_lock(PIPE_MUTEX(*inode));
-	PIPE_READERS(*inode)++;
-	mutex_unlock(PIPE_MUTEX(*inode));
+	mutex_lock(&inode->i_mutex);
+	inode->i_pipe->readers++;
+	mutex_unlock(&inode->i_mutex);
 
 	return 0;
 }
@@ -579,9 +579,9 @@ pipe_read_open(struct inode *inode, struct file *filp)
 static int
 pipe_write_open(struct inode *inode, struct file *filp)
 {
-	mutex_lock(PIPE_MUTEX(*inode));
-	PIPE_WRITERS(*inode)++;
-	mutex_unlock(PIPE_MUTEX(*inode));
+	mutex_lock(&inode->i_mutex);
+	inode->i_pipe->writers++;
+	mutex_unlock(&inode->i_mutex);
 
 	return 0;
 }
@@ -589,12 +589,12 @@ pipe_write_open(struct inode *inode, struct file *filp)
 static int
 pipe_rdwr_open(struct inode *inode, struct file *filp)
 {
-	mutex_lock(PIPE_MUTEX(*inode));
+	mutex_lock(&inode->i_mutex);
 	if (filp->f_mode & FMODE_READ)
-		PIPE_READERS(*inode)++;
+		inode->i_pipe->readers++;
 	if (filp->f_mode & FMODE_WRITE)
-		PIPE_WRITERS(*inode)++;
-	mutex_unlock(PIPE_MUTEX(*inode));
+		inode->i_pipe->writers++;
+	mutex_unlock(&inode->i_mutex);
 
 	return 0;
 }
@@ -731,7 +731,7 @@ static struct inode * get_pipe_inode(void)
 	if (!inode->i_pipe)
 		goto fail_iput;
 
-	PIPE_READERS(*inode) = PIPE_WRITERS(*inode) = 1;
+	inode->i_pipe->readers = inode->i_pipe->writers = 1;
 	inode->i_fop = &rdwr_pipe_fops;
 
 	/*

include/linux/pipe_fs_i.h

@@ -43,16 +43,6 @@ struct pipe_inode_info {
    memory allocation, whereas PIPE_BUF makes atomicity guarantees.  */
 #define PIPE_SIZE		PAGE_SIZE
 
-#define PIPE_MUTEX(inode)	(&(inode).i_mutex)
-#define PIPE_WAIT(inode)	(&(inode).i_pipe->wait)
-#define PIPE_READERS(inode)	((inode).i_pipe->readers)
-#define PIPE_WRITERS(inode)	((inode).i_pipe->writers)
-#define PIPE_WAITING_WRITERS(inode)	((inode).i_pipe->waiting_writers)
-#define PIPE_RCOUNTER(inode)	((inode).i_pipe->r_counter)
-#define PIPE_WCOUNTER(inode)	((inode).i_pipe->w_counter)
-#define PIPE_FASYNC_READERS(inode)     (&((inode).i_pipe->fasync_readers))
-#define PIPE_FASYNC_WRITERS(inode)     (&((inode).i_pipe->fasync_writers))
-
 /* Drop the inode semaphore and wait for a pipe event, atomically */
 void pipe_wait(struct pipe_inode_info *pipe);