linux-kernel - [PATCH 011/437] virtio_console: convert to read/write iterator helpers

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Message-ID: <20240411153126.16201-12-axboe@kernel.dk>
Date: Thu, 11 Apr 2024 09:12:31 -0600
From: Jens Axboe <axboe@...nel.dk>
To: linux-kernel@...r.kernel.org
Cc: Jens Axboe <axboe@...nel.dk>
Subject: [PATCH 011/437] virtio_console: convert to read/write iterator helpers

Add stub read/write iterators which just use the VFS helpers, and
kill the ->read() and ->write() usage.

Signed-off-by: Jens Axboe <axboe@...nel.dk>
---
 drivers/char/virtio_console.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c
index 035f89f1a251..154934eb9ae9 100644
--- a/drivers/char/virtio_console.c
+++ b/drivers/char/virtio_console.c
@@ -771,6 +771,7 @@ static ssize_t port_fops_read(struct file *filp, char __user *ubuf,
 
 	return fill_readbuf(port, ubuf, count, true);
 }
+FOPS_READ_ITER_HELPER(port_fops_read);
 
 static int wait_port_writable(struct port *port, bool nonblock)
 {
@@ -844,6 +845,7 @@ static ssize_t port_fops_write(struct file *filp, const char __user *ubuf,
 out:
 	return ret;
 }
+FOPS_WRITE_ITER_HELPER(port_fops_write);
 
 struct sg_list {
 	unsigned int n;
@@ -1087,8 +1089,8 @@ static int port_fops_fasync(int fd, struct file *filp, int mode)
 static const struct file_operations port_fops = {
 	.owner = THIS_MODULE,
 	.open  = port_fops_open,
-	.read  = port_fops_read,
-	.write = port_fops_write,
+	.read_iter  = port_fops_read_iter,
+	.write_iter = port_fops_write_iter,
 	.splice_write = port_fops_splice_write,
 	.poll  = port_fops_poll,
 	.release = port_fops_release,
-- 
2.43.0