linux-kernel - Re: [PATCH] move file->f_op->open out of mutex (misc_mtx) in misc

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Message-ID: <20150109224707.GA3026@kroah.com>
Date:	Fri, 9 Jan 2015 14:47:07 -0800
From:	Greg KH <gregkh@...uxfoundation.org>
To:	xiaomin1 <xiaoming.wang@...el.com>
Cc:	arnd@...db.de, linux-kernel@...r.kernel.org,
	chuansheng.liu@...el.com, Zhang Dongxing <dongxing.zhang@...el.com>
Subject: Re: [PATCH] move file->f_op->open out of mutex (misc_mtx) in
 misc_open

On Tue, Jan 06, 2015 at 08:34:07AM +0800, xiaomin1 wrote:
> misc_mtx was used to mutex misc_list.
> But file->f_op->open may be blocked by downloading
> firmware in some devices' open.
> So move file->f_op->open out of mutex (misc_mtx)
> in misc_open to avoid this block.
> It also make code more efficiency.
> 
> Signed-off-by: Zhang Dongxing <dongxing.zhang@...el.com>
> Signed-off-by: xiaoming wang <xiaoming.wang@...el.com>
> ---
>  drivers/char/misc.c |    3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)


Please fix up your "From:" line to match your signed-off-by line, as I
can't take it the way you sent this.

greg k-h
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