linux-kernel - Re: [ 052/153] idr: idr_for_each

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Date:	Mon, 04 Mar 2013 04:56:53 +0000
From:	Ben Hutchings <ben@...adent.org.uk>
To:	Philipp Reisner <philipp.reisner@...bit.com>
Cc:	stable@...r.kernel.org, akpm@...ux-foundation.org,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [ 052/153] idr: idr_for_each_entry() macro

On Mon, 2013-03-04 at 03:37 +0000, Ben Hutchings wrote:
> 3.2-stable review patch.  If anyone has any objections, please let me know.
> 
> ------------------
> 
> From: Philipp Reisner <philipp.reisner@...bit.com>
> 
> commit 9749f30f1a387070e6e8351f35aeb829eacc3ab6 upstream.
> 
> Inspired by the list_for_each_entry() macro
> 
> Signed-off-by: Ben Hutchings <ben@...adent.org.uk>

Philipp, please can I have an explicit Signed-off-by from you?  It was
missing in mainline though this change appeared in a long series of drbd
changes with proper Signed-off-by lines.

Ben.

> ---
>  include/linux/idr.h |   11 +++++++++++
>  1 file changed, 11 insertions(+)
> 
> diff --git a/include/linux/idr.h b/include/linux/idr.h
> index 255491c..52a9da2 100644
> --- a/include/linux/idr.h
> +++ b/include/linux/idr.h
> @@ -152,4 +152,15 @@ void ida_simple_remove(struct ida *ida, unsigned int id);
>  
>  void __init idr_init_cache(void);
>  
> +/**
> + * idr_for_each_entry - iterate over an idr's elements of a given type
> + * @idp:     idr handle
> + * @entry:   the type * to use as cursor
> + * @id:      id entry's key
> + */
> +#define idr_for_each_entry(idp, entry, id)				\
> +	for (id = 0, entry = (typeof(entry))idr_get_next((idp), &(id)); \
> +	     entry != NULL;                                             \
> +	     ++id, entry = (typeof(entry))idr_get_next((idp), &(id)))
> +
>  #endif /* __IDR_H__ */
> 
> 
> --
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> 

-- 
Ben Hutchings
Always try to do things in chronological order;
it's less confusing that way.

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