linux-kernel - Re: [PATCH] Change return type of obvious Boolean list fns to "bool".

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Message-Id: <20101123111658.8bfb91cd.randy.dunlap@oracle.com>
Date:	Tue, 23 Nov 2010 11:16:58 -0800
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	"Robert P. J. Day" <rpjday@...shcourse.ca>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] Change return type of obvious Boolean list fns to
 "bool".

On Sun, 21 Nov 2010 08:35:04 -0500 (EST) Robert P. J. Day wrote:

> 
> It's clear that a number of basic list routines return simply a
> Boolean value, so change their return type from "int" to "bool".
> 
> Signed-off-by: Robert P. J. Day <rpjday@...shcourse.ca>
> 

Acked-by: Randy Dunlap <randy.dunlap@...cle.com>

with allmodconfig on i386 and x86_64.


> ---
> 
>   Compile-tested with defconfig on x86_64.  Not sure who should
> be CCed when a patch touches something this basic.  Andrew?
> 
> 
> diff --git a/include/linux/list.h b/include/linux/list.h
> index 9a5f8a7..1d6ed55 100644
> --- a/include/linux/list.h
> +++ b/include/linux/list.h
> @@ -167,7 +167,7 @@ static inline void list_move_tail(struct list_head *list,
>   * @list: the entry to test
>   * @head: the head of the list
>   */
> -static inline int list_is_last(const struct list_head *list,
> +static inline bool list_is_last(const struct list_head *list,
>  				const struct list_head *head)
>  {
>  	return list->next == head;
> @@ -177,7 +177,7 @@ static inline int list_is_last(const struct list_head *list,
>   * list_empty - tests whether a list is empty
>   * @head: the list to test.
>   */
> -static inline int list_empty(const struct list_head *head)
> +static inline bool list_empty(const struct list_head *head)
>  {
>  	return head->next == head;
>  }
> @@ -195,7 +195,7 @@ static inline int list_empty(const struct list_head *head)
>   * to the list entry is list_del_init(). Eg. it cannot be used
>   * if another CPU could re-list_add() it.
>   */
> -static inline int list_empty_careful(const struct list_head *head)
> +static inline bool list_empty_careful(const struct list_head *head)
>  {
>  	struct list_head *next = head->next;
>  	return (next == head) && (next == head->prev);
> @@ -219,7 +219,7 @@ static inline void list_rotate_left(struct list_head *head)
>   * list_is_singular - tests whether a list has just one entry.
>   * @head: the list to test.
>   */
> -static inline int list_is_singular(const struct list_head *head)
> +static inline bool list_is_singular(const struct list_head *head)
>  {
>  	return !list_empty(head) && (head->next == head->prev);
>  }


---
~Randy
*** Remember to use Documentation/SubmitChecklist when testing your code ***
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