Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753633Ab3G3OyL (ORCPT ); Tue, 30 Jul 2013 10:54:11 -0400 Received: from cantor2.suse.de ([195.135.220.15]:42824 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750932Ab3G3OyJ (ORCPT ); Tue, 30 Jul 2013 10:54:09 -0400 Date: Tue, 30 Jul 2013 16:54:05 +0200 From: Borislav Petkov To: Dave Hansen Cc: Michal Hocko , Andrew Morton , linux-mm@kvack.org, linux-kernel@vger.kernel.org, kosaki.motohiro@jp.fujitsu.com, kamezawa.hiroyu@jp.fujitsu.com, Dave Hansen Subject: Re: [PATCH resend] drop_caches: add some documentation and info message Message-ID: <20130730145405.GA23365@pd.tnic> References: <1374842669-22844-1-git-send-email-mhocko@suse.cz> <20130729135743.c04224fb5d8e64b2730d8263@linux-foundation.org> <20130730074531.GA10584@dhcp22.suse.cz> <20130730012544.2f33ebf6.akpm@linux-foundation.org> <20130730125525.GB15847@dhcp22.suse.cz> <51F7D1F0.20309@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <51F7D1F0.20309@intel.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1117 Lines: 32 On Tue, Jul 30, 2013 at 07:47:12AM -0700, Dave Hansen wrote: > On 07/30/2013 05:55 AM, Michal Hocko wrote: > >> > If we add another flag in the future it can use bit 3? > > What if we get crazy and need more of them? > > I really hate using bits for these kinds of interfaces. I'm forgetful > and never remember which bit is which, and they're possible to run out of. > > I'm not saying do it now, but we can switch over to: > > echo 'slab|pagecache' > drop_caches > or > echo 'quiet|slab' > drop_caches > > any time we want and still have compatibility with the existing bitwise > interface. Hohum, definitely a nice idea at a first glance. And when you cat drop_caches, it could show you what all those commands mean and how you can issue them, i.e. allowed syntax etc. -- Regards/Gruss, Boris. Sent from a fat crate under my desk. Formatting is fine. -- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/