From: Li Zefan <lizf@cn.fujitsu.com>
Date: Fri, 20 Mar 2009 01:48:47 +0000 (+0800)
Subject: blktrace: don't increase blk_probes_ref if failed to setup blk trace
X-Git-Tag: v2.6.30-rc1~2^2~13^5~16
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cbe28296eb1ac441b35cf45804d0ae808add7dd1;p=pandora-kernel.git

blktrace: don't increase blk_probes_ref if failed to setup blk trace

do_blk_trace_setup() may return EBUSY, but the current code
doesn't decrease blk_probes_ref in this case.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
LKML-Reference: <49C2F5FF.80002@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

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