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Message-Id: <20130730080810.9a0a2d71.akpm@linux-foundation.org> Date: Tue, 30 Jul 2013 08:08:10 -0700 From: Andrew Morton <akpm@...ux-foundation.org> To: Dave Hansen <dave.hansen@...el.com> Cc: Michal Hocko <mhocko@...e.cz>, linux-mm@...ck.org, linux-kernel@...r.kernel.org, kosaki.motohiro@...fujitsu.com, kamezawa.hiroyu@...fujitsu.com, bp@...e.de, Dave Hansen <dave@...ux.vnet.ibm.com> Subject: Re: [PATCH resend] drop_caches: add some documentation and info message On Tue, 30 Jul 2013 07:47:12 -0700 Dave Hansen <dave.hansen@...el.com> 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. /bin/drop_caches "slab|pagecache" That we always insist on doing such things in the kernel instead is exhibit #1 in Why We Suck. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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