netdev - Re: [PATCH 02/23] usb-gadget: use per-attribute show and store methods

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Date:	Sun, 27 Sep 2015 10:50:53 -0500
From:	Felipe Balbi <balbi@...com>
To:	Christoph Hellwig <hch@....de>
CC:	Joel Becker <jlbec@...lplan.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Felipe Balbi <balbi@...com>, Tejun Heo <tj@...nel.org>,
	Pratyush Anand <pratyush.anand@...il.com>,
	<target-devel@...r.kernel.org>, <cluster-devel@...hat.com>,
	<ocfs2-devel@....oracle.com>, <linux-usb@...r.kernel.org>,
	<netdev@...r.kernel.org>
Subject: Re: [PATCH 02/23] usb-gadget: use per-attribute show and store
 methods

On Fri, Sep 25, 2015 at 06:49:39AM -0700, Christoph Hellwig wrote:
> Signed-off-by: Christoph Hellwig <hch@....de>
> ---
>  drivers/usb/gadget/configfs.c       | 295 ++++++++++++++----------------------
>  include/linux/usb/gadget_configfs.h |  19 +--
>  2 files changed, 118 insertions(+), 196 deletions(-)
> 
> diff --git a/drivers/usb/gadget/configfs.c b/drivers/usb/gadget/configfs.c
> index 294eb74..163d305 100644
> --- a/drivers/usb/gadget/configfs.c
> +++ b/drivers/usb/gadget/configfs.c
> @@ -64,6 +64,11 @@ struct gadget_info {
>  	char qw_sign[OS_STRING_QW_SIGN_LEN];
>  };
>  
> +static inline struct gadget_info *to_gadget_info(struct config_item *item)
> +{
> +	 return container_of(to_config_group(item), struct gadget_info, group);
> +}

this (and the other helper below) could be macros just fine. Are you 100% compiler
will *always* inline these helpers. The likelyhood of not inlining is minimal, sure,
but what do we get for writing these as functions instead of macros ?

also, lacking commit log

-- 
balbi

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