From: Jonathan Corbet <corbet@lwn.net>
To: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: "linux-mm@kvack.org" <linux-mm@kvack.org>,
"nishimura@mxp.nes.nec.co.jp" <nishimura@mxp.nes.nec.co.jp>,
"balbir@linux.vnet.ibm.com" <balbir@linux.vnet.ibm.com>,
gthelen@google.com, m-ikeda@ds.jp.nec.com,
"akpm@linux-foundation.org" <akpm@linux-foundation.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [RFC][PATCH 1/7][memcg] virtually indexed array library.
Date: Tue, 27 Jul 2010 12:29:49 -0600 [thread overview]
Message-ID: <20100727122949.3bfbfd0a@bike.lwn.net> (raw)
In-Reply-To: <20100727165303.7d7d18e9.kamezawa.hiroyu@jp.fujitsu.com>
On Tue, 27 Jul 2010 16:53:03 +0900
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> wrote:
> This virt-array allocates a virtally contiguous array via get_vm_area()
> and allows object allocation per an element of array.
Quick question: this looks a lot like the "flexible array" mechanism
which went in around a year ago, and which is documented in
Documentation/flexible-arrays.txt. I'm not sure we need two of
these... That said, it appears that there are still no users of
flexible arrays. If your virtually-indexed arrays provide something
that flexible arrays don't, perhaps your implementation should replace
flexible arrays?
Thanks,
jon
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next prev parent reply other threads:[~2010-07-27 18:29 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-27 7:51 [RFC][PATCH 0/7][memcg] towards I/O aware memory cgroup KAMEZAWA Hiroyuki
2010-07-27 7:53 ` [RFC][PATCH 1/7][memcg] virtually indexed array library KAMEZAWA Hiroyuki
2010-07-27 18:29 ` Jonathan Corbet [this message]
2010-07-28 0:08 ` KAMEZAWA Hiroyuki
2010-07-28 19:45 ` Andrew Morton
2010-07-29 0:32 ` KAMEZAWA Hiroyuki
2010-07-29 4:27 ` KAMEZAWA Hiroyuki
2010-08-02 18:00 ` Balbir Singh
2010-08-02 23:45 ` KAMEZAWA Hiroyuki
2010-07-27 7:54 ` [RFC][PATCH 2/7][memcg] cgroup arbitarary ID allocation KAMEZAWA Hiroyuki
2010-07-28 2:30 ` Vivek Goyal
2010-07-28 2:35 ` KAMEZAWA Hiroyuki
2010-07-28 3:10 ` Vivek Goyal
2010-08-02 18:04 ` Balbir Singh
2010-08-02 23:45 ` KAMEZAWA Hiroyuki
2010-07-27 7:55 ` [RFC][PATCH 3/7][memcg] memcg on virt array for quick access via ID KAMEZAWA Hiroyuki
2010-07-27 7:56 ` [RFC][PATCH 4/7][memcg] memcg use ID in page_cgroup KAMEZAWA Hiroyuki
2010-07-28 2:39 ` Vivek Goyal
2010-07-28 2:44 ` KAMEZAWA Hiroyuki
2010-07-28 3:13 ` Vivek Goyal
2010-07-28 3:18 ` KAMEZAWA Hiroyuki
2010-07-28 3:21 ` KAMEZAWA Hiroyuki
2010-07-28 14:17 ` Vivek Goyal
2010-07-28 15:43 ` Munehiro Ikeda
2010-07-27 7:59 ` [RFC][PATCH 5/7][memcg] memcg lockless update of file mapped KAMEZAWA Hiroyuki
2010-07-28 7:09 ` Greg Thelen
2010-07-28 7:13 ` KAMEZAWA Hiroyuki
2010-07-27 8:00 ` [RFC][PATCH 6/7][memcg] generic file status update KAMEZAWA Hiroyuki
2010-07-28 7:12 ` Greg Thelen
2010-07-28 7:14 ` KAMEZAWA Hiroyuki
2010-07-27 8:02 ` [RFC][PATCH 7/7][memcg] use spin lock instead of bit_spin_lock in page_cgroup KAMEZAWA Hiroyuki
2010-07-28 6:16 ` Greg Thelen
2010-07-28 6:20 ` KAMEZAWA Hiroyuki
2010-08-02 18:09 ` Balbir Singh
2010-08-02 23:46 ` KAMEZAWA Hiroyuki
2010-07-28 0:13 ` [RFC][PATCH 0/7][memcg] towards I/O aware memory cgroup KAMEZAWA Hiroyuki
2010-07-28 14:42 ` Balbir Singh
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