X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=fs%2Fpipe.c;h=2c7a23dde2d83f1ae18190e5723c0eb8d8ae0548;hb=5e5d7a22292613e55da8e91d75bcc062fd861f41;hp=25aa09f9d09d08ce5c29738406bae6d5e27d8843;hpb=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2;p=linux-2.6

diff --git a/fs/pipe.c b/fs/pipe.c
index 25aa09f9d0..2c7a23dde2 100644
--- a/fs/pipe.c
+++ b/fs/pipe.c
@@ -415,6 +415,10 @@ pipe_poll(struct file *filp, poll_table *wait)
 
 	if (filp->f_mode & FMODE_WRITE) {
 		mask |= (nrbufs < PIPE_BUFFERS) ? POLLOUT | POLLWRNORM : 0;
+		/*
+		 * Most Unices do not set POLLERR for FIFOs but on Linux they
+		 * behave exactly like pipes for poll().
+		 */
 		if (!PIPE_READERS(*inode))
 			mask |= POLLERR;
 	}
@@ -422,9 +426,6 @@ pipe_poll(struct file *filp, poll_table *wait)
 	return mask;
 }
 
-/* FIXME: most Unices do not set POLLERR for fifos */
-#define fifo_poll pipe_poll
-
 static int
 pipe_release(struct inode *inode, int decr, int decw)
 {
@@ -568,7 +569,7 @@ struct file_operations read_fifo_fops = {
 	.read		= pipe_read,
 	.readv		= pipe_readv,
 	.write		= bad_pipe_w,
-	.poll		= fifo_poll,
+	.poll		= pipe_poll,
 	.ioctl		= pipe_ioctl,
 	.open		= pipe_read_open,
 	.release	= pipe_read_release,
@@ -580,7 +581,7 @@ struct file_operations write_fifo_fops = {
 	.read		= bad_pipe_r,
 	.write		= pipe_write,
 	.writev		= pipe_writev,
-	.poll		= fifo_poll,
+	.poll		= pipe_poll,
 	.ioctl		= pipe_ioctl,
 	.open		= pipe_write_open,
 	.release	= pipe_write_release,
@@ -593,7 +594,7 @@ struct file_operations rdwr_fifo_fops = {
 	.readv		= pipe_readv,
 	.write		= pipe_write,
 	.writev		= pipe_writev,
-	.poll		= fifo_poll,
+	.poll		= pipe_poll,
 	.ioctl		= pipe_ioctl,
 	.open		= pipe_rdwr_open,
 	.release	= pipe_rdwr_release,