linux-kernel - Re: [RFCv2][PATCH] add some drop_caches documentation and info messsge

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Message-Id: <20100917092603.3BD5.A69D9226@jp.fujitsu.com>
Date:	Fri, 17 Sep 2010 09:26:26 +0900 (JST)
From:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To:	Dave Hansen <dave@...ux.vnet.ibm.com>
Cc:	kosaki.motohiro@...fujitsu.com, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, lnxninja@...ux.vnet.ibm.com,
	kamezawa.hiroyu@...fujitsu.com, ebiederm@...ssion.com
Subject: Re: [RFCv2][PATCH] add some drop_caches documentation and info messsge

> diff -puN fs/drop_caches.c~update-drop_caches-documentation fs/drop_caches.c
> --- linux-2.6.git/fs/drop_caches.c~update-drop_caches-documentation	2010-09-16 09:43:52.000000000 -0700
> +++ linux-2.6.git-dave/fs/drop_caches.c	2010-09-16 09:43:52.000000000 -0700
> @@ -47,6 +47,8 @@ int drop_caches_sysctl_handler(ctl_table
>  {
>  	proc_dointvec_minmax(table, write, buffer, length, ppos);
>  	if (write) {
> +		printk(KERN_NOTICE "%s (%d): dropped kernel caches: %d\n",
> +			current->comm, task_pid_nr(current), sysctl_drop_caches);
>  		if (sysctl_drop_caches & 1)
>  			iterate_supers(drop_pagecache_sb, NULL);
>  		if (sysctl_drop_caches & 2)

Can't you print it only once?



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