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

From: Philipp Reisner
Date: Thu Jul 03 2014 - 04:45:43 EST


From: Lars Ellenberg <lars.ellenberg@xxxxxxxxxx>

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@xxxxxxxxxx>
Signed-off-by: Lars Ellenberg <lars.ellenberg@xxxxxxxxxx>
---
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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