Re: [PATCH 0/7] blktrace: various cleanups and fixes

[Ingo Molnar <mingo@elte.hu>]

* Li Zefan <lizf@cn.fujitsu.com> wrote:

> While trying to use blktrace in -tip tree, I encounted kernel NULL 
> dereference, so I looked into the code, and then found some other 
> bugs.
> 
> This patchset is part 1, and I have some other pending fixes.
> 
> Each patch is small and straightforward, and should be easy to review:
> 
> [PATCH 1/7] blktrace: fix possible memory leak
> [PATCH 2/7] blktrace: make blk_tracer_enabled a bool flag
> [PATCH 3/7] blktrace: remove blk_probe_mutex
> [PATCH 4/7] blktrace: don't increase blk_probes_ref if failed to setup blk trace
> [PATCH 5/7] blktrace: report EBUSY correctly
> [PATCH 6/7] blktrace: remove sysfs_blk_trace_enable_show/store()
> [PATCH 7/7] blktrace: avoid accessing NULL bdev->bd_disk
> ---
>  blktrace.c |  154 +++++++++++++++++--------------------------------------------
>  1 file changed, 45 insertions(+), 109 deletions(-)
> 
> Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>

Nice fixes. Applied to tip:tracing/blktrace, thanks!

	Ingo