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

From: Greg KH
Date: Fri Jan 09 2015 - 17:47:13 EST


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@xxxxxxxxx>
> Signed-off-by: xiaoming wang <xiaoming.wang@xxxxxxxxx>
> ---
> 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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