linux-kernel - Re: [PATCH] tracing/filters: use list_for_each_entry

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Message-ID: <49C748B0.20305@cn.fujitsu.com>
Date:	Mon, 23 Mar 2009 16:30:40 +0800
From:	Li Zefan <lizf@...fujitsu.com>
To:	Tom Zanussi <tzanussi@...il.com>
CC:	linux-kernel <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...e.hu>,
	Steven Rostedt <rostedt@...dmis.org>,
	Frédéric Weisbecker 
	<fweisbec@...il.com>
Subject: Re: [PATCH] tracing/filters: use list_for_each_entry_safe

> -	list_for_each_safe(entry, tmp, &call->fields) {
> -		field = list_entry(entry, struct ftrace_event_field, link);
> +	list_for_each_entry_safe(field, next, &call->fields, link) {

Why we need _safe version ?

>  		if (!strcmp(field->name, name))
>  			return field;
>  	}

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