linux-kernel - [Patch] Remove debugfs entries on bad path

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Message-ID: <4A115BA5.6090905@linux.vnet.ibm.com>
Date:	Mon, 18 May 2009 14:59:17 +0200
From:	Stefan Raspl <raspl@...ux.vnet.ibm.com>
To:	linux-btrace@...r.kernel.org, Jens Axboe <jens.axboe@...cle.com>,
	linux-kernel@...r.kernel.org, schwidefsky@...ibm.com,
	heiko.carstens@...ibm.com
Subject: [Patch] Remove debugfs entries on bad path

debugfs directory entries for devices are not removed on bad path.
If so, subsequent attempts to start blktrace on the respective
devices will not succeed due to existing directories.

Signed-off-by: Stefan Raspl <stefan.raspl@...ux.vnet.ibm.com>

---
 kernel/trace/blktrace.c |    1 +
 1 file changed, 1 insertion(+)

--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -262,6 +262,7 @@ static void blk_trace_free(struct blk_tr
 {
 	debugfs_remove(bt->msg_file);
 	debugfs_remove(bt->dropped_file);
+	debugfs_remove(bt->dir);
 	relay_close(bt->rchan);
 	free_percpu(bt->sequence);
 	free_percpu(bt->msg_data);

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