linux-kernel - [PATCH 18/23] drbd: debugfs: add per connection oldest requests

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Message-Id: <1404376995-4877-19-git-send-email-philipp.reisner@linbit.com>
Date:	Thu,  3 Jul 2014 10:43:10 +0200
From:	Philipp Reisner <philipp.reisner@...bit.com>
To:	linux-kernel@...r.kernel.org, Jens Axboe <axboe@...nel.dk>
Cc:	drbd-dev@...ts.linbit.com
Subject: [PATCH 18/23] drbd: debugfs: add per connection oldest requests

From: Lars Ellenberg <lars.ellenberg@...bit.com>

Information of former /sys/block/drbdX/drbd/oldest_requests
is already with higher detail in these files:
 debugfs/drbd/resource/$name/in_flight_summary,
 debugfs/drbd/resource/$name/volumes/$vnr/oldest_requests

This patch adds
 debugfs/drbd/resource/$name/connections/peer/oldest_requests

Signed-off-by: Philipp Reisner <philipp.reisner@...bit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@...bit.com>
---
 drivers/block/drbd/drbd_debugfs.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/block/drbd/drbd_debugfs.c b/drivers/block/drbd/drbd_debugfs.c
index a4d0666..db70d6c 100644
--- a/drivers/block/drbd/drbd_debugfs.c
+++ b/drivers/block/drbd/drbd_debugfs.c
@@ -670,6 +670,13 @@ void drbd_debugfs_connection_add(struct drbd_connection *connection)
 	if (IS_ERR_OR_NULL(dentry))
 		goto fail;
 	connection->debugfs_conn_callback_history = dentry;
+
+	dentry = debugfs_create_file("oldest_requests", S_IRUSR|S_IRGRP,
+			connection->debugfs_conn, connection,
+			&connection_oldest_requests_fops);
+	if (IS_ERR_OR_NULL(dentry))
+		goto fail;
+	connection->debugfs_conn_oldest_requests = dentry;
 	return;
 
 fail:
-- 
1.9.1

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