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From: Sasha Levin <levinsasha928@gmail.com>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Tejun Heo <tj@kernel.org>,
	akpm@linux-foundation.org, linux-kernel@vger.kernel.org,
	linux-mm@kvack.org, paul.gortmaker@windriver.com,
	davem@davemloft.net, rostedt@goodmis.org, mingo@elte.hu,
	ebiederm@xmission.com, aarcange@redhat.com, ericvh@gmail.com,
	netdev@vger.kernel.org
Subject: Re: [RFC v2 1/7] hashtable: introduce a small and naive hashtable
Date: Sat, 04 Aug 2012 02:33:07 +0200	[thread overview]
Message-ID: <501C6DC3.90904@gmail.com> (raw)
In-Reply-To: <CA+55aFziVRRBoTnm2zASGR39W1AB+0=4Sa7qO8e6_hN06ZY8wg@mail.gmail.com>

On 08/04/2012 02:05 AM, Linus Torvalds wrote:
> On Fri, Aug 3, 2012 at 5:03 PM, Sasha Levin <levinsasha928@gmail.com> wrote:
>>
>> The problem with that code was that it doesn't work with dynamically allocated hashtables, or hashtables that grow/shrink.
> 
> Sure. But once you have that kind of complexity, why would you care
> about the trivial cases?

Because there are far more trivial cases than complex ones - I've counted 50+ of these "trivial" cases.

None of them need the complexity we're trying to deal with at the moment.

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WARNING: multiple messages have this Message-ID (diff)
From: Sasha Levin <levinsasha928@gmail.com>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Tejun Heo <tj@kernel.org>,
	akpm@linux-foundation.org, linux-kernel@vger.kernel.org,
	linux-mm@kvack.org, paul.gortmaker@windriver.com,
	davem@davemloft.net, rostedt@goodmis.org, mingo@elte.hu,
	ebiederm@xmission.com, aarcange@redhat.com, ericvh@gmail.com,
	netdev@vger.kernel.org
Subject: Re: [RFC v2 1/7] hashtable: introduce a small and naive hashtable
Date: Sat, 04 Aug 2012 02:33:07 +0200	[thread overview]
Message-ID: <501C6DC3.90904@gmail.com> (raw)
In-Reply-To: <CA+55aFziVRRBoTnm2zASGR39W1AB+0=4Sa7qO8e6_hN06ZY8wg@mail.gmail.com>

On 08/04/2012 02:05 AM, Linus Torvalds wrote:
> On Fri, Aug 3, 2012 at 5:03 PM, Sasha Levin <levinsasha928@gmail.com> wrote:
>>
>> The problem with that code was that it doesn't work with dynamically allocated hashtables, or hashtables that grow/shrink.
> 
> Sure. But once you have that kind of complexity, why would you care
> about the trivial cases?

Because there are far more trivial cases than complex ones - I've counted 50+ of these "trivial" cases.

None of them need the complexity we're trying to deal with at the moment.

  reply	other threads:[~2012-08-04  0:32 UTC|newest]

Thread overview: 68+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-08-03 14:23 [RFC v2 0/7] generic hashtable implementation Sasha Levin
2012-08-03 14:23 ` Sasha Levin
2012-08-03 14:23 ` [RFC v2 1/7] hashtable: introduce a small and naive hashtable Sasha Levin
2012-08-03 14:23   ` Sasha Levin
2012-08-03 17:15   ` Tejun Heo
2012-08-03 17:15     ` Tejun Heo
2012-08-03 17:16     ` Tejun Heo
2012-08-03 17:16       ` Tejun Heo
2012-08-03 21:19     ` Sasha Levin
2012-08-03 21:19       ` Sasha Levin
2012-08-03 21:30       ` Tejun Heo
2012-08-03 21:30         ` Tejun Heo
2012-08-03 21:36         ` Sasha Levin
2012-08-03 21:36           ` Sasha Levin
2012-08-03 21:44           ` Tejun Heo
2012-08-03 21:44             ` Tejun Heo
2012-08-03 21:41         ` Sasha Levin
2012-08-03 21:41           ` Sasha Levin
2012-08-03 21:48           ` Tejun Heo
2012-08-03 21:48             ` Tejun Heo
2012-08-03 22:20             ` Sasha Levin
2012-08-03 22:20               ` Sasha Levin
2012-08-03 22:23               ` Tejun Heo
2012-08-03 22:23                 ` Tejun Heo
2012-08-03 22:26                 ` Sasha Levin
2012-08-03 22:26                   ` Sasha Levin
2012-08-03 22:29                 ` Linus Torvalds
2012-08-03 22:29                   ` Linus Torvalds
2012-08-03 22:36                   ` Tejun Heo
2012-08-03 22:36                     ` Tejun Heo
2012-08-03 23:47                     ` Linus Torvalds
2012-08-03 23:47                       ` Linus Torvalds
2012-08-04  0:03                       ` Sasha Levin
2012-08-04  0:03                         ` Sasha Levin
2012-08-04  0:05                         ` Linus Torvalds
2012-08-04  0:05                           ` Linus Torvalds
2012-08-04  0:33                           ` Sasha Levin [this message]
2012-08-04  0:33                             ` Sasha Levin
2012-08-04  0:05                       ` Tejun Heo
2012-08-04  0:05                         ` Tejun Heo
2012-08-03 17:39   ` Eric Dumazet
2012-08-03 17:39     ` Eric Dumazet
2012-08-03 14:23 ` [RFC v2 2/7] user_ns: use new hashtable implementation Sasha Levin
2012-08-03 14:23   ` Sasha Levin
2012-08-05  0:58   ` Eric W. Biederman
2012-08-05  0:58     ` Eric W. Biederman
2012-08-03 14:23 ` [RFC v2 3/7] mm,ksm: " Sasha Levin
2012-08-03 14:23   ` Sasha Levin
2012-08-03 14:23 ` [RFC v2 4/7] workqueue: " Sasha Levin
2012-08-03 14:23   ` Sasha Levin
2012-08-03 14:23 ` [RFC v2 5/7] mm/huge_memory: " Sasha Levin
2012-08-03 14:23   ` Sasha Levin
2012-08-03 14:23 ` [RFC v2 6/7] tracepoint: " Sasha Levin
2012-08-03 14:23   ` Sasha Levin
2012-08-05  0:36   ` Steven Rostedt
2012-08-05  0:36     ` Steven Rostedt
2012-08-05 16:31     ` Mathieu Desnoyers
2012-08-05 16:31       ` Mathieu Desnoyers
2012-08-05 17:03       ` Sasha Levin
2012-08-05 17:03         ` Sasha Levin
2012-08-05 17:12         ` Mathieu Desnoyers
2012-08-05 17:12           ` Mathieu Desnoyers
2012-08-03 14:23 ` [RFC v2 7/7] net,9p: " Sasha Levin
2012-08-03 14:23   ` Sasha Levin
2012-08-03 18:00   ` Eric Dumazet
2012-08-03 18:00     ` Eric Dumazet
2012-08-03 21:14     ` Sasha Levin
2012-08-03 21:14       ` Sasha Levin

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