linux-kernel - [PATCH 08/13] add fsync function

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Message-Id: <1339057243-10029-9-git-send-email-stefani@seibold.net>
Date:	Thu,  7 Jun 2012 10:20:38 +0200
From:	stefani@...bold.net
To:	linux-kernel@...r.kernel.org, gregkh@...uxfoundation.org,
	oneukum@...e.de
Cc:	linux-usb@...r.kernel.org, Stefani Seibold <stefani@...bold.net>
Subject: [PATCH 08/13] add fsync function

From: Stefani Seibold <stefani@...bold.net>

Signed-off-by: Stefani Seibold <stefani@...bold.net>
---
 drivers/usb/usb-skeleton.c |    8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)

diff --git a/drivers/usb/usb-skeleton.c b/drivers/usb/usb-skeleton.c
index dc95129..61f4ac8 100644
--- a/drivers/usb/usb-skeleton.c
+++ b/drivers/usb/usb-skeleton.c
@@ -133,7 +133,7 @@ static void skel_draw_down(struct usb_skel *dev)
 	usb_kill_urb(dev->bulk_in_urb);
 }
 
-static int skel_flush(struct file *file, fl_owner_t id)
+static int skel_fsync(struct file *file, loff_t start, loff_t end, int datasync)
 {
 	struct usb_skel *dev = file->private_data;
 	int retval;
@@ -157,6 +157,11 @@ exit:
 	return retval;
 }
 
+static int skel_flush(struct file *file, fl_owner_t id)
+{
+	return skel_fsync(file, 0, LLONG_MAX, 0);
+}
+
 static void skel_read_bulk_callback(struct urb *urb)
 {
 	struct usb_skel *dev;
@@ -470,6 +475,7 @@ static const struct file_operations skel_fops = {
 	.write =	skel_write,
 	.open =		skel_open,
 	.release =	skel_release,
+	.fsync =	skel_fsync,
 	.flush =	skel_flush,
 	.llseek =	noop_llseek,
 };
-- 
1.7.8.6

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